Статті в журналах: "Radius of rounding of a cutting edge"

1

Cichosz, Piotr, Mikolaj Kuzinovski, Mite Tomov, and Adam Urych. "Rounding off of machine-cutting blades made of sintered carbides." Mechanik 91, no. 7 (July 9, 2018): 458–62. http://dx.doi.org/10.17814/mechanik.2018.7.57.

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The paper describes the origins of edge rounding of machine-cutting blades made of sintered carbides. Various processing machines and abrasive materials used to smoothen the cutting edges are presented. Various methods of measurement of the edge radius are compared. Stressed are the possibilities of improvement of tool durability through the use of new finishing process technologies for tool working surfaces.

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2

P. Balabanov, Igor, Vitaliy N. Gilman, Tatyana S. Timofeeva, and Airat I. Faskhutdinov. "Modeling of the Cutting Edge Rounding Influence on the Tool Life in Processing A Gear Wheel by the Power Skiving Method." International Journal of Engineering & Technology 7, no. 4.7 (September 27, 2018): 71. http://dx.doi.org/10.14419/ijet.v7i4.7.20386.

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Modeling of the shaping by a milling cutter is made while forming the internal gear teeth of the driven gear wheel. The estimate of the cutting edge rounding influence on the tool life taking into account the wear-resistant coating. The effects of radii of 10 μm, 15 μm, 20 μm, 25 μm are simulated. At the edge radius of 10 μm, the coating layer is rapidly collapses. At a radius of 15 μm, the highest tool life is obtained. At the more high radii, the tools durability is decreases. A practical experiment was carried out on a cupped skiving cutter with AlTiCN-coating (PVD). Processed steel 41CrAlMo7 with hardness 241-287НВ. The simulation results were confirmed, the highest tools lifetime at a radius of 16.13 microns for 60 parts. As a result, for this type of processing and for this coating type of the cutting tool, the most optimal cutting edge rounding can be considered as the value of 15-18 μm. It can be concluded that, perhaps, a more sharp edge from 10 to 15 μm can be a positive effect on tools lifetime, in the case of uniform rounding over the entire cutter edge of the tools tooth (on the top and side tooth profile).

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3

Podashev, Dmitry. "Theory of Formation of Edge’s Surface Roughness Finished by Radial Polymer-Abrasive Brushes." Materials Science Forum 1037 (July 6, 2021): 571–80. http://dx.doi.org/10.4028/www.scientific.net/msf.1037.571.

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Formation of roughness during treatment by polymer-abrasive brushes occurred as a result of interaction of cutting micro-relief with processed surface. The cutting micro-relief of abrasive instrument is described in the form of random process with normal distributional law. When calculation of roughness, the depths of penetration of cutting lugs in processed material as well as regularity of changing of radial radius of rounding of peaks of cutting lugs from modes of treatment are taken into consideration. Set are relations of roughness of processed edge from modes of treatment (deformations of instrument, cutting velocities, feeding) as well as from constituent cutting force. It is proved that usage of polymer-abrasive brushes for rounding of edges faces all requirements of aviation industry on roughness of processed edges.

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4

Kiselev, M. G., S. G. Monich, P. S. Bohdan, and K. A. Sidorov. "PHYSICAL MODELING OF CONDITIONS ON INTERACTION OF PROCESSED MATERIAL WITH METAL DEPOSITS OBTAINED ON SMOOTH SURFACE OF STRIPS DUE TO ITS ELECTRO-EROSION MODIFICATION." Science & Technique 17, no. 3 (May 31, 2018): 190–97. http://dx.doi.org/10.21122/2227-1031-2018-17-3-190-197.

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The paper is devoted to a physical modeling of the process pertaining to interaction of the machined material with metal deposits along a hole edge which are obtained on a smooth tool surface due to its electro-erosion modification. A technique for obtaining single holes on a cutting tool (strip) is given in the paper. The paper describes main geometric elements which have obtained due to the action of a single electric discharge. Geometric parameters of a single hole initiated on a working strip surface in the course of this effect have been given in the paper. The paper provides a justification and description of a tape tool prototype used in the investigations brass band strips, on which a washer with different rounding radius of an outer edge is fixed. The prototype makes it possible to simulate metal deposits on the modified working surface of the strips. The paper presents methodology for carrying out experiments on investigations for interaction of the created strip prototype with a processed material, including a description of a device for studying the process of washer interaction with the samples from paraffin and gypsum. Photographs are given that allow to visualize a destruction process of samples which is caused by a washer (model of metal deposits). The paper shows stages of sample fracture when using washers with different rounding radius and describes nature of the destruction for various sample materials. The results of the conducted studies reflecting an influence of the shape of an outer washer edge, in particular a radius of its rounding, on the course of characteristic stages in the process of destruction of samples from paraffin and gypsum are presented and discussed in the paper. It has been experimentally confirmed that metal deposits which are formed at the hole edge and extend beyond an initial surface contour, represent cutting-deforming elements with a capability to destroy material which ranks below in hardness to metal of the deposits.

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5

Storch, Borys, and Łukasz Żurawski. "Research on the stages of the wear of the tip cutting edge with a rounding radius based on the mathematical and geometric model." Mechanik 92, no. 11 (November 12, 2019): 704–6. http://dx.doi.org/10.17814/mechanik.2019.11.93.

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In modern multiuse cutting tools with exchange plate (e.g. with superfinishing edge or Wiper), the cutting edge is made without documenting the basis for optimizing its dimensions. The article presents a generalized edge wear model surrounded by a rounded tip. The proposed solution allows such a modification of edge corner – by determining the conditions of its work – to adapt the tool to stabilize the process of shaping the machined surface.

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6

Bohdal, Łukasz, Leon Kukiełka, Radosław Patyk, Katarzyna Kośka, Jarosław Chodór, and Konrad Czyżewski. "Experimental and Numerical Studies of Tool Wear Processes in the Nibbling Process." Materials 15, no. 1 (December 24, 2021): 107. http://dx.doi.org/10.3390/ma15010107.

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The work concerns an analysis of the wear mechanisms of punches in the nibbling process. The nibbling process is the multiple punching of holes or external contours using circular punches, the diameter of which is much smaller than the size of the punched shapes. Analytical, numerical and experimental studies were carried out. In the analytical solution, formulas for determining the pressures in the contact zone were developed, thus enabling a simple estimation of the designed nibbling tools. In numerical studies, the influence of the punch rounding radius on the fatigue wear was investigated. It has been shown that the change in the punch cutting edge radius from r = 0 mm to r = 0.5 mm enables a seven-fold increase in the fatigue wear resistance. It was found that the change in the punch cutting edge rounding radius has an impact on the quality of the product (the greater the radius r, the worse the technological quality of the product). In experimental studies, the abrasive wear process was primarily investigated. For this purpose, the nibbling process was tested on S235JR + AR steel sheets with tools made of NC11LV/1.2379 steel without any coating and with an AlCrTiN layer. It was found that the special AlCrTiN layer used allowed for an increase in the resistance to abrasive wear, and thus increased the service life by approx. three times. The last element of the work is an assessment of the technological quality of the product after nibbling depending on the degree and type of stamp wear (quantitative and qualitative assessment).

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7

Wojtkowiak, Dominik, and Krzysztof Talaśka. "The influence of the piercing punch profile on the stress distribution on its cutting edge." MATEC Web of Conferences 254 (2019): 02001. http://dx.doi.org/10.1051/matecconf/201925402001.

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Modifying the piercing punch profile may have a positive effect on the belt perforation process. Using the proper shape of the tool may reduce the perforation force and improve the quality of the holes. However, complex geometry of the punch can also cause an adverse stress distribution, which leads to a faster tool wear. In the presented paper, several different piercing punch profiles were tested using FEM analyses in ABAQUS and the obtained stress distributions along its cutting edges were analyzed. For the selected group of the piercing punches, the influence of variable geometrical features (a radius of rounding, an angle of chamfering or a depth of the bowl) on the stress distribution were also shown. Based on the results, it is possible to predict how modifying the punch profile will affect the shortening of the tool life, compared to the basic flat-end cylindrical piercing punch. The following research can be useful in the design process of the punching tools used for vacuum conveyor belts perforation.

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8

Voynash, Sergey A., Viktoriya A. Sokolova, Viktor I. Kretinin, Viktor A. Markov, Elena A. Alekseeva Alekseeva, and Georgiy K. Parfenopulo. "A method for evaluating the edge strength of soil-cutting parts of forestry machines." Elektrotekhnologii i elektrooborudovanie v APK 67, no. 1 (March 28, 2020): 111–15. http://dx.doi.org/10.22314/2658-4859-2020-67-1-111-115.

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One of the main factors that determine the resistance of blade working bodies against damage under dynamic loads is their resistance to plastic crumpling, brittle or fatigue failure. Hard alloys that strengthen the blades of tillage parts are more brittle materials than steel, so the blunting of their edges is caused by the formation of cracks, their gradual growth or microchipping, even from a possible single impact of a solid inclusion in the soil. In addition to the usual brittle fracture of hard alloys, fatigue failure occurs under cyclic impact conditions. (Research purpose) The research purpose is in identifying the pattern of destruction of the blade edge of soil-cutting parts of forestry machines and theoretically justifying the algorithm for assessing the strength to determine the rational thickness of the wear-resistant coating during hardening. (Materials and methods) The article presents the main regularities of the influence of material properties and geometric parameters of the blade on the radius of rounding. (Results and discussion) The process of breaking the edge of the blade of hardened working bodies of forestry machines has been studied. The claim that the blunting of the blades is mainly due to its destruction and not to wear has been proved. The article presents a method for evaluating the strength of bimetallic blades of soil-cutting parts of forestry machines. It was found that the blunting of the blade occurs as a result of edge destruction in the process of multiple impacts of solid soil inclusions along the edge of the blade. (Conclusions) The article shows that the destruction of the edge of the blade leads to blunting of soil-cutting parts, which affects their performance. It was found that the sharpness of a self-sharpening hardened blade is determined by the thickness of the reinforcing layer and its ability to resist destruction under impact.

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9

Grubyi, S. V. "Calculation of the Cutting Forces and Torque when Milling with End Mills." Proceedings of Higher Educational Institutions. Маchine Building, no. 10 (727) (November 2020): 26–37. http://dx.doi.org/10.18698/0536-1044-2020-10-26-37.

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This paper presents a computational sequence for calculating the components of the cutting force and torque when milling with carbide end mills. The calculation algorithm includes the transition from the tangential and radial components of the force to the force components in the machine coordinate system. On the helical cutting edge, two parts are highlighted: one on the cylindrical (peripheral) surface and the other one on the arc of the rounded tip of the tooth. These parts of the cutting edge are divided into sections where the calculation is performed, followed by summation of the force components along the axes of the machine co-ordinate system and the moment relative to the axis of the cutter. An analysis of the components of the force and torque depending on the depth of cutting, feed, number of teeth of the cutter, blade wear and radius of the tip rounding is performed. The ratio of forces and moments for various milling conditions of structural carbon steel and aluminum alloys is shown. The developed algorithm is applied in a computational program that can be used to perform operational calculations of forces and torque for various milling conditions. The calculated parameters can be used as technological limiters in optimization problems, as well as for strength calculations of tools, milling equipment, and the selection of components of milling machine drives.

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10

Nadolny, Krzysztof, Wojciech Kapłonek, Marzena Sutowska, Paweł Sutowski, Piotr Myśliński, Adam Gilewicz, and Bogdan Warcholiński. "Experimental tests of PVD AlCrN-coated planer knives on planing Scots pine (Pinus sylvestris L.) under industrial conditions." European Journal of Wood and Wood Products 79, no. 3 (February 16, 2021): 645–65. http://dx.doi.org/10.1007/s00107-021-01660-y.

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AbstractRaw pine wood processing and especially its mechanical processing constitute a significant share among technological operations leading to obtaining a finished product. Stable implementation of machining operations, ensuring long-term repeatable processing results depends on many factors, such as quality and invariability of raw material, technical condition of technological equipment, adopted parameters of work, qualifications and experience of operators, as well as preparation and properties of the machining tools used. It seems that the greatest potential in the search for opportunities to increase the efficiency of machining operations has the modification of machining tools used in it. This paper presents the results of research work aimed at determining how the life of cutting tools used in planing operations of wet pine wood is affected by the application of chromium aluminum nitride (AlCrN) coating to planar industrial planing knives in the process of physical vapour deposition. For this purpose operational tests were carried out under production conditions in a medium-sized wood processing company. The study compares the effective working time, rounding radius, the profile along the knife (size of worn edge displacement, wear area of the cutting edge), selected texture parameters of the planar industrial planing knife rake face and visual analyses of cutting edge condition of AlCrN-coated planar knives and unmodified ones. The obtained experimental results showed the possibility of increasing the life of AlCrN-coated knives up to 154% compared to the results obtained with uncoated ones. The proposed modification of the operational features of the knives does not involve any changes in the technological process of planing, does not require any interference with the machining station nor its parameters, therefore enabling rapid and easy implementation into industrial practice.

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11

Pa, Pai Shan. "Performance Assessment of Design Electrode in Ultrasonic-Aided of Freeform Surface Finishing." Key Engineering Materials 364-366 (December 2007): 680–85. http://dx.doi.org/10.4028/www.scientific.net/kem.364-366.680.

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The most effective geometry for design electrode and the advantage of low cost equipment in ultrasonic-aided electrochemical finishing for a freeform surface following turning machining was investigated. The proposed design process used an effective electrode instead of the mate electrode as in conventional ECM. Hence higher electrical current is not required when the effective design electrode is used to reduce the response area. Through simple equipment attachment, electrochemical finishing can follow the traditional cutting on the same machine. The controlled factors included the chemical composition and concentration of the electrolyte, the initial gap width, the flow rate of electrolyte, workpiece rotational speed, and die material. The design electrode is primarily discussed among the factors affecting the electrochemical finishing. The experimental parameters were current rating, electrode feed rate, frequency , power level of ultrasonics, and electrode geometry. The effective design electrode with small wedge angle and small edge rounding radius had an optimal value for higher current density and provided larger discharge space, which produce a smoother surface. The electrode of globe-shape with small radius performed best in the finishing process. The electrochemical finishing needed only a short time to make the workpiece smooth and bright and save the need for the precise process of traditional machining. The ultrasonic-aided electrochemical finishing is recommended for the finishing process of the freeform surface.

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12

Nadolny, Krzysztof, Wojciech Kapłonek, Marzena Sutowska, Paweł Sutowski, Piotr Myśliński, and Adam Gilewicz. "Experimental Studies on Durability of PVD-Based CrCN/CrN-Coated Cutting Blade of Planer Knives Used in the Pine Wood Planing Process." Materials 13, no. 10 (May 22, 2020): 2398. http://dx.doi.org/10.3390/ma13102398.

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The condition of the cutting tool is one of the most important factors as it directly affects the technological and economic efficiencies of the woodworking process. The large variety of raw materials of wood combined with possible impurities and inclusion of solids puts high demands on planing machines. One of the methods to modify their operational properties is to apply antiwear coating on their working surfaces using vacuum deposition methods, such as physical vapor deposition (PVD). The use of such coatings reduces the adhesion of planing products to the surface of industrial planer knives, reduces the friction between the cutting tool and the workpiece, and limits the penetration of heat into the tool, thereby contributing to extending its effective working life. This study examines the impact of PVD-based CrCN/CrN coating on the operational durability and intensity of wear of planer knives operating in production conditions compared to unmodified knives (typically used in the wood processing industry for pine wood planing). For the unmodified and CrCN/CrN-coated planing blades (before and after processing), detailed analyses were carried out. These analyses included determining the rounding radius and profile along the blade (worn edge displacement), calculating surface texture parameters of the rake face of planer knives, and carrying out visual microscopic analysis of its condition. The results of the experiments indicated an increase in durability of up to 142% for the CrCN/CrN-coated tools. It was also found that the use of PVD-based modified industrial planer knives turned out to be more beneficial in each analyzed area of analysis.

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13

Baczyński, Szymon, Piotr Cichosz, Mikolaj Kuzinovski, Mite Tomov, and Adam Urych. "Impact of smoothing conditions on the rounding effect of cutting edges of cemented carbide machining blades." Mechanik 91, no. 10 (October 8, 2018): 868–70. http://dx.doi.org/10.17814/mechanik.2018.10.147.

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The origin of rounding cutting edges of machining blades made out of cemented carbides is presented. Various methods of cutting edge smoothing and rounding measurement are described. The impact of smoothing conditions on the intensity and effects of edge rounding is specified.

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14

Bergmann, Benjamin, Berend Denkena, Sascha Beblein, and Tobias Picker. "FE-Simulation Based Design of Wear-Optimized Cutting Edge Roundings." Journal of Manufacturing and Materials Processing 5, no. 4 (November 25, 2021): 126. http://dx.doi.org/10.3390/jmmp5040126.

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The performance of cutting tools can be significantly enhanced by matching the cutting edge rounding to the process and material properties. However, the conventional cutting edge rounding design is characterized by a significant number of experimental machining studies, which involve considerable cost, time, and resources. In this study, a novel approach to cutting edge rounding design using FEM-based chip formation simulations is presented. Based on a parameterized simulation model, tool temperatures, stresses and relative velocities can be calculated as a function of tool microgeometry. It can be shown that the external tool loads can be simulated with high agreement. With the help of these loads and the use of wear models, the resulting tool wear and the optimum cutting edge rounding can be determined. The final experimental investigations show a qualitatively high agreement to the simulation, which will enable a reduced effort design of the cutting edge in the future.

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15

Peter, Pokorný, Pätoprstý Boris, Vopát Tomáš, Peterka Jozef, Vozár Marek, and Šimna Vladimír. "Cutting edge radius preparation." Materials Today: Proceedings 22 (2020): 212–18. http://dx.doi.org/10.1016/j.matpr.2019.08.090.

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16

Yang, Shu Cai, Min Li Zheng, Yi Hang Fan, and W. Xu. "Research on Cutting Performances of Tool Rounded Cutting Edge in High Speed Milling Hardened Steel." Advanced Materials Research 188 (March 2011): 139–44. http://dx.doi.org/10.4028/www.scientific.net/amr.188.139.

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Simulation models of both dynamic cutting forces and cutting temperatures considering effects of tool rounded cutting edge are established based on analysis of the influences of rounded cutting edge on high speed milling process. Influence law of tool rounded cutting edge radius on force and heat distribution in high speed milling hardened steel has been obtained according to the simulation results and also the simulation results have been verified by experiments. The results indicate that dynamic performances of high speed milling cutter in cutting hardened steel are directly influenced by rounded cutting edge radius, and the cutting forces fluctuated greatly with the variation of rounded cutting edge radius. Variations of rounded cutting edge radius have greater impact on cutting temperatures when the rounded cutting edge radius is less than 40μm. Cutting temperature rise slowly with the increase of rounded cutting edge radius when the rounded cutting edge radiuses are larger than 40μm. Simulation can precisely predict cutting temperatures and cutting forces considering influences of rounded cutting edge radius. Rounded cutting edge radius should be kept around 40~45μm for optimal cutting performances according to its influences on cutting forces and cutting temperatures in high speed milling hardened steel.

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17

Wang, Hao, Ai Bing Yu, Liang Dong, and Lei Wu. "Wear Simulation for Edge Preparation Cutting Tools." Applied Mechanics and Materials 101-102 (September 2011): 1039–42. http://dx.doi.org/10.4028/www.scientific.net/amm.101-102.1039.

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Edge preparation is a process to modify edge geometry and surface integrity of cutting tools. Edge preparation experiments of tungsten carbide cutting tools were carried out through an abrasive nylon brushing method. Tools wear and cutting temperatures with different edge radius were simulated with FEM software. The experimental results show that cutting edge defects were eliminated through brushing edge preparation. The edge radius has influences on cutting tool performance. When the edge radius is 20μm, the least wear can be obtained. Then tool wear value increases with the edge radius. A suitable edge radius will have a reasonable cutting temperature distribution. The tool temperature distribution shows the same results as tool wear. A suitable edge radius range is needed for edge preparation and a reasonable edge radius is needed to improve tool life.

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18

Chai, Guo Bing, Wei Wang, and Ai Bing Yu. "Influence of Edge Preparation on Cutting Tool Wear." Applied Mechanics and Materials 201-202 (October 2012): 1178–81. http://dx.doi.org/10.4028/www.scientific.net/amm.201-202.1178.

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Edge preparation is not only the process of grinding proper geometry of cutting edge or removing micro-cracks on cutting edge region, but also a way of improving cutting tool life. In this study, cutting models with different cutting edge radius were set up with FEM software. Medium carbon steel cutting tests were carried out using cutting tools with different edge radius. Cutting tool wear was simulated and measured for comparison. The simulation results show that edge radius has influences on tool wear. Tool cutting behavior is concerned with edge radius. A proper edge radius will improve the tool life. The experimental results show that proper edge preparation could improve tool impact resistance capability and reduce tool wear. The cutting tool life can be prolonged with suitable edge preparation. Edge preparation can improve cutting performance of cutting tool.

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19

Tian, Xin Li, Hao Wang, Xiu Jian Tang, Zhao Li, and Ai Bing Yu. "Edge Design for Regrinding Cutting Tool." Applied Mechanics and Materials 101-102 (September 2011): 938–41. http://dx.doi.org/10.4028/www.scientific.net/amm.101-102.938.

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Анотація:

Regrinding of wasted cutting tools can recycle resources and decrease manufacturing costs. Influence of relative tool sharpness and tool cutting edge angle on tool edge radius were analyzed. Cutting force and cutting temperature were simulated with FEM on different edge radius. Edge preparation experiments were carried out though an abrasive nylon brushing method. The results show that RTS and cutting edge angle have influence on edge radius. Small edge radius might result in small cutting forces and lower average temperatures, could maintain the cutting state between tool and workpiece. The cutting edge defects can be eliminated through edge preparation, and a smooth cutting edge can be obtained. Cutting tool life will be improved through proper edge design and edge preparation.

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20

Fan, Yi Hang, Min Li Zheng, Shu Cai Yang, Wei Zhang, and De Qiang Zhang. "Finite Element Analysis of the Influence of Cutting Edge Radius on Mechanical-Thermal Distribution in High-Speed Cutting TiAl6v4." Key Engineering Materials 458 (December 2010): 295–300. http://dx.doi.org/10.4028/www.scientific.net/kem.458.295.

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On the basis of analyzing the cutting edge structure and cutting edge radius measurement of high-speed insert, thermal - mechanical coupling finite element method (FEM) is used in this paper, to obtain the effect law of different cutting edge radius on the mechanical-thermal distribution of high-speed cutting TiAl6V4. At last, cutting experiments are carried out to verify FEM results. There is a clear exposition of the intrinsic reason why the cutting edge radius has influence on the mechanical -thermal distribution of high-speed cutting process. The results indicate that the experimental results have a good agreement with FEM; with the cutting edge radius increases, cutting force increases; cutting temperature is not monotonic, but there exists an optimum edge radius that makes temperature lowest; cutting edge changes the plastic flow of materials around tool tip and broaden plastic deformation zone. The cutting edge radius has a greater impact on equivalent stress.

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21

Cao, Zi Yang, Ning He, and Liang Li. "A Finite Element Analysis of Micro/Meso-Scale Machining Considering the Cutting Edge Radius." Applied Mechanics and Materials 10-12 (December 2007): 631–36. http://dx.doi.org/10.4028/www.scientific.net/amm.10-12.631.

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Анотація:

In order to investigate the effects of cutting edge radius on micro/meso-scale cutting process, the current paper is concerned with a fundamental investigation of the contribution of cutting edge radius to cutting temperature, stress field and size effect by means of two-dimensional finite-element simulation for orthogonal cutting process. The results indicated that cutting edge radius has remarkable effects on cutting temperature and stress field, and the existence of cutting edge radius is one of the main reasons generating size effect. The cutting edge radius affects the micro/meso scale cutting process at smaller uncut chip thickness by altering the effective rake angle and enhancing the plowing effect, affecting the material deformation process, expanding and widening the plastic deformation zone, and causing higher energy dissipation due to increased tool-chip contact length.

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22

Li, Peng, and Zhiyong Chang. "Numerical Modeling of the Effect of Cutting-Edge Radius on Cutting Force and Stress Concentration during Machining." Micromachines 13, no. 2 (January 28, 2022): 211. http://dx.doi.org/10.3390/mi13020211.

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Cutting is the primary method of material removal, and the quality of machined parts depends on the geometry of cutting tools. In this paper, a new cutting force coefficient model is established, revealing the influence of cutting-edge radius on the cutting process. The effects of cutting-edge radius on the shear angle and cutting force components are analyzed by finite element simulations. A series of simulations is conducted, and the results show that with increased cutting-edge radius, the shear angle decreases nonlinearly, and the cutting force increases gradually. Additionally, the growth rate of the feed force caused by increasing the cutting-edge radius is higher than that of the tangential force. Furthermore, the stress concentration area of the machined surface extends from the surface to the subsurface as the cutting-edge radius increases. The results of this research show that changing the cutting edge affects the cutting force component, shear angle, and stress concentration range during the cutting process. These results provide a theoretical reference for predicting the residual stress in parts.

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23

Yang, Shu Cai, Min Li Zheng, Yi Hang Fan, De Qiang Zhang, and Ying Bin Li. "Influences of Cutting Edge Radius on Cutting Deformation in High-Speed Machining Ti6Al4V." Advanced Materials Research 305 (July 2011): 47–52. http://dx.doi.org/10.4028/www.scientific.net/amr.305.47.

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Анотація:

In order to obtain the influences of cutting edge radius on cutting deformation in high-speed machining Ti6Al4V, cutting temperature, equivalent stress distribution, the chip morphology and cutting deformation coefficient were analyzed in this paper. The results indicated that cutting edge changed the plastic flow of materials around tool tip and the actual tool rake angle, the tool-workpiece and tool-chip contact in cutting process which causes a greater impact on physical and mechanical performance in the given cutting conditions. When the cutting edge radius reached to 0.04mm,the cutting temperature and the equivalent stress existed mutations, which causes the mutation of chips. There was a chip thinning effect with the increase of the cutting edge radius. As the cutting edge radius increased, chip thickness and shear angle decreased, cutting deformation coefficient increased.

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24

Zhang, Kai, Yindi Cai, Yuki Shimizu, Hiraku Matsukuma, and Wei Gao. "High-Precision Cutting Edge Radius Measurement of Single Point Diamond Tools Using an Atomic Force Microscope and a Reverse Cutting Edge Artifact." Applied Sciences 10, no. 14 (July 13, 2020): 4799. http://dx.doi.org/10.3390/app10144799.

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This paper presents a measurement method for high-precision cutting edge radius of single point diamond tools using an atomic force microscope (AFM) and a reverse cutting edge artifact based on the edge reversal method. Reverse cutting edge artifact is fabricated by indenting a diamond tool into a soft metal workpiece with the bisector of the included angle between the tool’s rake face and clearance face perpendicular to the workpiece surface on a newly designed nanoindentation system. An AFM is applied to measure the topographies of the actual and the reverse diamond tool cutting edges. With the proposed edge reversal method, a cutting edge radius can be accurately evaluated based on two AFM topographies, from which the convolution effect of the AFM tip can be reduced. The accuracy of the measurement of cutting edge radius is significantly influenced by the geometric accuracy of reverse cutting edge artifact in the proposed measurement method. In the nanoindentation system, the system operation is optimized for achieving high-precision control of the indentation depth of reverse cutting edFigurege artifact. The influence of elastic recovery and the AFM cantilever tip radius on the accuracy of cutting edge radius measurement are investigated. Diamond tools with different nose radii are also measured. The reliability and capability of the proposed measurement method for cutting edge radius and the designed nanoindentation system are demonstrated through a series of experiments.

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25

Bakar, Husni Nazra Abu, Jaharah A. Ghani, and Che Hassan Che Haron. "Numerical Investigation on Effect of Rounded Cutting-Edge Radius and Machining Parameters in End Milling of AISI H13 Tool Steel." International Journal of Engineering & Technology 7, no. 4.30 (November 30, 2018): 53. http://dx.doi.org/10.14419/ijet.v7i4.30.22005.

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Rounded cutting-edge radius is commonly applied to finish and semi-finish cutting, precision machining and micro-machining. The optimum effect is closely related to the work and tool material as well as machining parameters. However, for numerous cutting process, the optimal radius of rounded cutting-edge radius and machining parameters applied in the AISI H13 of end-milling is yet unknown Therefore, in improving tool life and cutting tool performance, a suitable design of cutting edge geometry regarding cutting edge-radius and machining parameters need to be examined and properly selected. In this regard, the paper deals to examine the effect of cutting edge-radius in rounded form and machining parameters of cutting force, cutting temperature and chip formation through the end-milling process of AISI H13 using uncoated cemented carbide cutting tool through finite element simulation of Thirdwave AdvantEdge 7.2 software. The machining parameters applied in the simulation setup were 200 and 240m/min of cutting speed, 0.03 and 0.06mm/tooth of feed-rate and axial depth of cut of 0.1 and 0.2mm while width of cut in radial direction was kept constant at 6.0mm. The cutting geometries includes the cutting-edge radius of 0.03 and 0.05mm and 10° of rake angle. The obtained results revealed that cutting forces and cutting temperature is increase as depth of cut in axial direction and cutting-edge radius increases while increasing value of speed and feed-rate of cutting resulted in decreasing cutting forces but increasing cutting temperature. The maximum cutting temperature is 674.91℃. The value obtained is lesser than the AISI H13 austenitizing temperature, therefore a layer known as white layer is supposedly hard to be created based on the cutting geometry and machining parameters applied.

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26

Vasilko, Karol. "Highly Productive Tools For Turning And Milling." Technological Engineering 12, no. 2 (December 1, 2015): 5–9. http://dx.doi.org/10.1515/teen-2015-0009.

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Abstract Beside cutting speed, shift is another important parameter of machining. Its considerable influence is shown mainly in the workpiece machined surface microgeometry. In practice, mainly its combination with the radius of cutting tool tip rounding is used. Options to further increase machining productivity and machined surface quality are hidden in this approach. The paper presents variations of the design of productive cutting tools for lathe work and milling on the base of the use of the laws of the relationship among the highest reached uneveness of machined surface, tool tip radius and shift.

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27

Zong, Wen Jun, Dan Li, H. X. Wang, T. Sun, K. Cheng, and Ming Jun Chen. "Time Series Analysis for the Mechanical Lapping of Single Crystal Diamond Cutting Tools." Key Engineering Materials 291-292 (August 2005): 331–36. http://dx.doi.org/10.4028/www.scientific.net/kem.291-292.331.

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In order to avoid the stochastic damage of micro cleavage on cutting edge, a brittle-ductile transition lapping mechanism is proposed for the mechanical lapping of single crystal diamond cutting tools to direct the tools lapping. As expected, the critical depths of cut for brittle-ductile transition in different orientations and on different crystal planes are calculated. According to the theoretical results, the actual dynamic depth of cut is controlled within the critical depth of cut, which ensures that the tool lapping is carried out in ductile regime and the changes of cutting edge radius characterize with some specific time laws in lapping. Therefore, the time series and nonlinear least square methods are used to analyze the changing laws of cutting edge radius. As a result, a coupled model to build a bridge between the cutting edge radius changes and lapping time is developed. In terms of this developed model, a required cutting edge radius restricts a tool’s lapping time. Above all, the cutting edge radius is known in advance and has no needs measuring. So the production efficiency of diamond cutting tools is improved and its production cost is reduced accordingly.

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28

Denkena, Berend, Luis de Leon, and Jens Köhler. "Cutting Edge Preparation for Cemented Carbide Milling Tools." Advanced Materials Research 76-78 (June 2009): 597–602. http://dx.doi.org/10.4028/www.scientific.net/amr.76-78.597.

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After the grinding process, the cutting edges of cemented carbide milling tools tend to chipping. Chipping has a strong influence on the tool performance. For this reason, the cutting edges are further prepared. Additionally, a cutting edge rounding has an impact on the wear behavior and the process stability. For the cutting edge preparation of milling tools, magnetic finishing is a promising process. This paper describes the process of magnetic finishing. The influencing parameters, i.e. the process time and the distance between the cutting tool and the magnetic disks, are investigated. Furthermore, the effect of magnetic finishing on the tool life is demonstrated using the example of a milling process with titanium.

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29

Ihara, Tohru, Yukio Takahashi, and Xiaoqi Song. "Change in Edge Radius of Cutting Tool from Surface Tension Between Solid Materials." International Journal of Automation Technology 15, no. 4 (July 5, 2021): 422–30. http://dx.doi.org/10.20965/ijat.2021.p0422.

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In this study, the “surface tension defined from stress” was used to predict the change in the cutting edge radius in the tool’s initial-stage wear regime. An analysis of the “surface tension defined from the stress” between solids showed that the flow of the material and the adhesion phenomenon must occur simultaneously at the interface. From the experimental and simulation results, it was confirmed that the proposed model can be used to predict the stress distribution acting on the cutting tool and evaluate the “surface tension defined from the stress” at the tool and workpiece interface. It was also verified that the cutting-edge radius under a state of equilibrium changes based on the cutting condition. These results indicate that simply using a cutting tool with a smaller cutting-edge radius will lead to a rapid increase in the cutting-edge retreat at the beginning of the cutting. For the unmanned operation of the cutting processes, it is desirable to use a cutting tool with a cutting-edge radius under a state of equilibrium at the beginning of the cutting to improve the cutting efficiency and reduce the cutting cost.

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30

Schimmel, Roy J., Jairam Manjunathaiah, and William J. Endres. "Edge Radius Variability and Force Measurement Considerations." Journal of Manufacturing Science and Engineering 122, no. 3 (October 1, 1999): 590–93. http://dx.doi.org/10.1115/1.1286255.

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A new, noncontact instrument, based on white light interferometry, is used to measure the edge radii of cutting tools with measurement errors of less than 3 μm. Edges of several commercial cutting inserts are measured and compared. It is found that the radius of the hone varies along the length of the edge in a parabolic manner. The difference between the edge radius at the center of the edge and the radius at the start of the corner can be as large as 25 μm (0.001 in). The variation between the edges on an insert and across inserts in a batch of tools can be as high as 25 μm (0.001 in). Statistically significant variations are also seen in the corner radius region in which much cutting occurs in turning, boring and face milling processes. Orthogonal cutting tests with tools of measured edge radius in the zone of cut indicate that the machining forces, especially the thrust force component, are sensitive to changes in edge radius on the order of measured variations. [S1087-1357(00)01603-8]

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31

Feng, Zhi Yang, Xian Guo Yan, Yan Wen Lv, Hong Guo, Hang Fu, and Shao Hua Zhang. "The Effect of Electrolytic Strengthening Treatment on Tap’s Service Life." Key Engineering Materials 693 (May 2016): 944–51. http://dx.doi.org/10.4028/www.scientific.net/kem.693.944.

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In this study High-speed steel taps are taken as the research object. Electrolysis technology was used to deal with the taps in various count time (7s 14s 21s 28s 35s) and then obtain the corresponding radii of the cutting edge (11.38μm 15.05μm 20.35μm 23.00μm 25.55μm). The experimental results exhibit quantitatively the effect of tool radius on the performance of tapping. A radius on the cutting edge prevents fast and unpredictable wear. Moreover, the existence of an optimum value of the radius has been revealed experimentally. Tapping test is used to prove the optimal cutting edge radius is 15.05μm and the taps life increase about 2.5 times than usual taps. It can provide an important theoretical basis for the modifications of the cutting edge radius and give a method to improve tap life.

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32

Afazov, Shukri, Svetan Ratchev, and Joel Segal. "Effects of the Cutting Tool Edge Radius on the Stability Lobes in Micro-Milling." Advanced Materials Research 223 (April 2011): 859–68. http://dx.doi.org/10.4028/www.scientific.net/amr.223.859.

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This paper investigates the effects of the cutting tool edge radius on the cutting forces and stability lobes in micro-milling. The investigation is conducted based on recently developed models for prediction of micro-milling cutting forces and stability lobes. The developed models consider the nonlinearities of the micro-milling process, such as nonlinear cutting forces due to cutting velocity dependencies, edge radius effect and run-out presence. A number of finite element analyses (FEA) are performed to obtain the cutting forces in orthogonal cutting which are used for determining the micro-milling cutting forces. The chip morphology obtained for different tool edge radii using FEA is presented. It is observed that at large tool edge radii the influence of the ploughing effect become more significant factor on the chip morphology. The results related to micro-milling cutting forces and stability lobes show that by enlarging the tool edge radius the micro-milling cutting forces increase while the stability limits decrease.

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33

Zhang, Tao, Zhen Yu Shi, Bing Yan, and Hou Jun Qi. "Investigation of Size Effect on Micro Hardness of Machined Surface in Micro Cutting." Applied Mechanics and Materials 602-605 (August 2014): 443–46. http://dx.doi.org/10.4028/www.scientific.net/amm.602-605.443.

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Micro cutting is a promising way for manufacturing micro parts, especially micro three dimension parts. Micro hardness is an important character to evaluate surface integrity of machined surface. Micro cutting is different from macro cutting due to size effect of specific cutting energy because of the influence of the ratio of uncut chip thickness to cutting edge radius. A group of micro cutting experiments were conducted to investigate the cutting parameters on the micro hardness of machined surface. The micro hardness of machines surface decreases with the ratio of uncut chip thickness to cutting edge radius first, and then increase when the uncut chip thickness is smaller than the cutting edge radius. The micro hardness shows size effect due to the machined surface compressed twice with the round cutting edge. The micro hardness decreases with the distance increasing far away from the machined surface.

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34

Jiang, Fang, Xi Bin Wang, Zhi Bing Liu, and Huai Ming Wang. "Stress Analysis on the Cutting Edge Based on Design of Micro-Cutting Tool." Key Engineering Materials 589-590 (October 2013): 395–98. http://dx.doi.org/10.4028/www.scientific.net/kem.589-590.395.

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Stress analysis on wedge zone is an important step for micro-cutting tool design. The effect of stress borne by the cutting tool upon the radius of its blunt edge was analyzed, when the tool machines with minimum cutting thickness which is confined within 10-4-10-2mm. It shows that the minimal extreme value of the radius of blunt edge is existed in the process of micro-cutting tool design.

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35

Zhou, Yi Dan, and Tao Wang. "The Simulation of the Influence of Honed Edge Radius on the Maximum Temperature in Drilling 42CrMo with K-Grade Carbide Drill Bit." Advanced Materials Research 399-401 (November 2011): 1848–51. http://dx.doi.org/10.4028/www.scientific.net/amr.399-401.1848.

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This paper uses a metal cutting simulation software AdvantEdge FEM as the platform, and simulates the drilling process of 42CrMo with three different honed cutting edge K-Grade carbide drills. The aim is to study the influence of different magnitude of honed cutting edge on the maximum temperature of cutting area. According to the simulation, the maximum temperature does not absolutely increase with the honed edge radius increase. The cutting temperature reaches maximum when the honed edge radius is 0.06mm in this paper, meanwhile the margin of fluctuation in the smallest.

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36

Tian, Xin Li, Zhao Li, Xiu Jian Tang, Fang Guo, and Ai Bing Yu. "Influence of Reground Tool Sharpness on Micro-Cutting Process." Applied Mechanics and Materials 37-38 (November 2010): 550–53. http://dx.doi.org/10.4028/www.scientific.net/amm.37-38.550.

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Tool edge radius has obvious influences on micro-cutting process. It considers the ratio of the cutting edge radius and the uncut chip thickness as the relative tool sharpness (RST). FEM simulations of orthogonal cutting processes were studied with dynamics explicit ALE method. AISI 1045 steel was chosen for workpiece, and cemented carbide was chosen for cutting tool. Sixteen cutting edges with different RTS values were chosen for analysis. Cutting forces and temperature distributions were calculated for carbide cutting tools with these RTS values. Cutting edge with a small RTS obtains large cutting forces. Ploughing force tend to sharply increase when the RTS of the cutting edge is small. Cutting edge with a reasonable RTS reduces the heat generation and presents reasonable temperature distributions, which is beneficial to cutting life. The force and temperature distributions demonstrate that there is a reasonable RTS range for the cutting edge.

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37

Liu, Xin, Xu Zhang, and Dazhong Wang. "Numerical analysis of different cutting edge radii in hot micro-cutting of Inconel 718." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 234, no. 1 (September 17, 2019): 196–210. http://dx.doi.org/10.1177/0954406219875783.

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Mechanical micro-cutting is one of the advanced processes for manufacturing of micro-parts. During the micro-cutting process, the thickness of the uncut chip is very close to the tip radius of the tool. The cutting edge is used to cut and extrude the workpiece. In this paper, the experiments and simulations of macro-machining nickel alloy are compared, and the process of micro-cutting nickel alloy is simulated and analyzed. In this study, four cutting edge radii, three cutting speeds, six hot cutting temperatures, and a constant depth of cut are used. The radius of the cutting edge of different sizes is theoretically analyzed and verified by simulation of material flow state, temperature, stress, strain, and cutting force. The results show that the material separation points are very close together at different cutting edge radii. The change in the radius of the cutting edge changed the contact state of the material in the cutting area, which has a large influence on the temperature and cutting force. The effects of different cutting speeds and hot working temperature on the machining process are also discussed.

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38

Winter, Sven, Karsten Richter, Elmar Galiev, Matthias Nestler, Verena Psyk, and Verena Kräusel. "Punching of Ultra-High-Strength Spring Strips: Evolution of Cutting Edge Radius up to 1,000,000 Strokes for Three Punch Materials." Journal of Manufacturing and Materials Processing 6, no. 2 (March 19, 2022): 38. http://dx.doi.org/10.3390/jmmp6020038.

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Punching of ultra-high-strength spring steel causes critical stresses in the tools. Pronounced wear and even spontaneous failure may occur. Wear of the punches influences the quality of the cutting surfaces of the blanked parts, which is predominantly determined by the cutting edge radius. The radius differs with an increasing number of strokes depending on the punch material. However, there are no studies characterizing the influence of the cutting edge radius on the cutting surface quality on an industrial scale, i.e., considering a very high number of strokes. In the presented study, punches made of high-speed steel, powder metallurgical steel and carbide were used to punch the ultra-high-strength steel 1.4310 (Rm = 1824 MPa) up to 1,000,000 strokes. The experiments were stopped at defined number of strokes, the punches were removed, nondestructively characterized regarding cutting edge radius and wear and reinstalled. It turned out that the radius differed significantly over the number of strokes and, further, varied depending on the punch material. Remarkably, the most low-cost material, precisely the high-speed steel, showed the smallest cutting edge radius of 16 µm and brought the parts with the best cutting surface quality (more than 30% burnish zone) after the maximum number of strokes. The results indicate clearly that the cutting edge radius develops differently for each regarded material and at different number of strokes. Therefore, it is of utmost importance to perform wear tests on different numbers of strokes under industrial conditions. With the knowledge gained, it will be possible to design optimized punches with lower costs and increased lifetime.

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39

Wang, Xiang Yu, Chuan Zhen Huang, Jun Wang, Bin Zou, Guo Liang Liu, and Han Lian Liu. "Finite Element Simulation of the Cutting Process for Inconel 718 Alloy Using a New Material Constitutive Model." Key Engineering Materials 693 (May 2016): 1046–53. http://dx.doi.org/10.4028/www.scientific.net/kem.693.1046.

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Inconel 718 alloy is a typical difficult-to-cut material and widely used in the aerospace industry. Finite element simulation is an efficient method to investigate the cutting process, whereby a work material constitutive model plays an important role. In this paper, finite element simulation of the cutting process for Inconel 718 alloy using a new material constitutive model for high strain rates is presented. The effect of tool cutting edge radius on the cutting forces and temperature is then investigated with a view to facilitate cutting tool design. It is found that as the cutting edge radius increases, the characteristics of tool-work friction and the material removal mechanisms change, resulting in variation in cutting forces and temperature. It is shown that a smaller cutting edge radius is preferred to reduce the cutting forces and cutting temperature.

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40

Wang, Chang Ying, Jia Jin Tian, Qing Long An, and Ming Chen. "Numerical Investigation on Effect of Rounded Cutting Edge Radius in Milling of Ultra-High-Strength Steel 30Cr3SiNiMoVA." Advanced Materials Research 797 (September 2013): 202–7. http://dx.doi.org/10.4028/www.scientific.net/amr.797.202.

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Ultra-high-strength steel 30Cr3SiNiMoVA (30Cr3) which has excellent mechanical properties is usually used to manufacture the key parts in aviation industry. Precision hard milling is an efficiency way to machine 30Cr3 instead of grinding. Rounded cutting edge radius has important influence on the machining process due to small depth of cut. In order to better understanding the influence of rounded cutting edge radius, cutting forces, cutting temperature, critical depth of cut, etc., is analyzed by using finite element method (FEM). The results show that cutting forces in theydirection are more sensitively to the rounded cutting edge radii. Ploughing effect is also observed at the end of the climb milling process and it has significant influence on the quality of the machined surface. Simulation reveals that the increment of rounded cutting edge radius can lead to the increment of critical depth of cut correspondingly and the proportionality factor is about 14%.

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41

Wang, Hui, Feng Zhou, Rong Di Han, and Yong Hong Liu. "Research on Cutting Performance of HSS Taps by Electric Enhanced." Applied Mechanics and Materials 251 (December 2012): 402–5. http://dx.doi.org/10.4028/www.scientific.net/amm.251.402.

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After tool edges sharpen, there are a variety of micro-defects in the area of edge, which will accelerate tool wear and shorten tool life. In order to increase tool life and production efficiency, the area of edge strengthen was needed. In this paper, the electrolysis technology was used to enhance the cutting edge of high-speed steel(HSS) tap, the rounding of the edge region of the forming edge and surface morphology of cutting edge were investigated. And the tapping tests were carried on the Ti6Al4V. The results showed that electrolysis enhanced technology can eliminate the defects, invert a circular edge and improve the tool edge strength. The original tap was worn rapidly in the early stages of wear and the cutting force was changed big variation. The results showed that tap strengthened can reduce tool wear and improve tool life.

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42

Wu, Yu Zhong, Fang Huang, and Qian Liu. "Study on the Numerical Simulation of Fillet Radius of V-Shaped Anvil Edge Influencing Quality of TC4 Heavy Long-Axis Forgings in Squaring Process." Advanced Materials Research 852 (January 2014): 538–42. http://dx.doi.org/10.4028/www.scientific.net/amr.852.538.

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An entire forging process for heavy long-axis forgings was divided into three steps：squaring, stretching, chamfering and rounding. Researches of forging process are now focused on the optimization of stretching, but the effect of squaring or chamfering and rounding on the forging quality is neglected. This article is in view of the problems that titanium alloy heavy long-axis forgings were prone to crack and forging process parameters were not easy to control in squaring. Using the Deform software, from strain, damage, forging required load it analyzed that the fillet radius of V-shaped anvil edge influenced quality of titanium alloy heavy long-axis forgings of different diameters in squaring, then we concluded the best combination between diameter of titanium alloy heavy long-axis forgings and fillet radius of V-shaped anvil edge. It provides basis for improving the quality of this kind of forging in squaring.

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43

Zhang, Tao, Zhan Qiang Liu, Chong Hai Xu, Ning He, and Liang Li. "Experimental Investigations of Size Effect on Cutting Force, Specific Cutting Energy, and Surface Integrity during Micro Cutting." Materials Science Forum 723 (June 2012): 371–76. http://dx.doi.org/10.4028/www.scientific.net/msf.723.371.

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Micro cutting is a promising technology to manufacture the micro parts. The shear mechanism of micro cutting is different from the conventional cutting due to the round cutting edge. The ratio of uncut chip thickness to cutting edge radius plays an important role on the micro cutting process. This paper investigates the size effect phenomena of micro cutting. Firstly, the cutting force and size effect of specific cutting energy depending on the ratio of uncut chip thickness to cutting edge radius are analyzed according to the experimental results. Then, the size effect of surface roughness due to the size effect of specific cutting energy is explored. Lastly, the size effect of the exit burr height is depicted and the potential reason is analyzed. The paper supplies a good understanding of how to get the best surface integrity and minimize the exit burr height for micro cutting.

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44

Wyen, C. F., and K. Wegener. "Influence of cutting edge radius on cutting forces in machining titanium." CIRP Annals 59, no. 1 (2010): 93–96. http://dx.doi.org/10.1016/j.cirp.2010.03.056.

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45

Fessler, H., and T. Appavoo. "On the effect of key edge shape on keyway edge stresses in shafts in torsion." Journal of Strain Analysis for Engineering Design 24, no. 3 (July 1, 1989): 121–25. http://dx.doi.org/10.1243/03093247v243121.

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Two-dimensional, photoelastic tests of cross-sections of two keyed shafts with 13 different shapes of keys showed that rounded edges of keys give lower stress concentrations in the shaft than chamfered edges. Stress concentrations are reduced by making both rounding radii and chamfers larger than the key way fillet radius. Making the key a sliding fit in the keyway allows significant relative movement and produces lower stress concentrations than the usual interference fits. Boussinesq's theoretical solution for stresses near a concentrated edge load has been successfully used for direct calibration of small photoelastic models.

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46

Zhang, Wei, Min Li Zheng, Ming Ming Cheng, and Quan Wan. "Experiment Research of Cutter Edge and Cutting Parameters Influence on Machined Surface Roughness for High Speed Milling Hardened Steel." Advanced Materials Research 136 (October 2010): 86–90. http://dx.doi.org/10.4028/www.scientific.net/amr.136.86.

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By using experiment cutter edge topography obtained by super depth three-dimension microscope, fits the cutter edge curve and calculate experiment cutter edge radius value; by high speed milling hardened steel experiment, individually researches cutter edge and cutting parameters influence on machined surface in high speed milling hardened steel with end-milling cutter and ball-end milling cutter. The experiment analysis results show that under the same cutting parameters condition, machined surface roughness in high speed end-milling cutter milling is better than in high speed ball-end milling; within experiment selected cutting parameter range, cutter edge radius is the main influence factor on machined surface roughness in high speed end- milling hardened steel, while the influence on machined surface roughness in high speed ball-end milling hardened steel is not obvious. In end-milling, when edge radius and milling depth are in the same order magnitude or the difference is not obvious, milling depth should be a little bigger than selected cutter edge radius value.

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47

Zhang, Wei, M. L. Zheng, M. M. Cheng, and W. T. Wang. "Experiment Research of Cutter Edge and Cutting Parameters Influence on Machined Surface Roughness for High Speed Milling Hardened Steel." Advanced Materials Research 670 (March 2013): 70–75. http://dx.doi.org/10.4028/www.scientific.net/amr.670.70.

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Анотація:

By using experiment cutter edge topography obtained by super depth three-dimension microscope, fits the cutter edge curve and calculate experiment cutter edge radius value; by high speed milling hardened steel experiment, individually researches cutter edge and cutting parameters influence on machined surface in high speed milling hardened steel with end-milling cutter and ball-end milling cutter. The experiment analysis results show that under the same cutting parameters condition, machined surface roughness in high speed end-milling cutter milling is better than in high speed ball-end milling; within experiment selected cutting parameter range, cutter edge radius is the main influence factor on machined surface roughness in high speed end- milling hardened steel, while the influence on machined surface roughness in high speed ball-end milling hardened steel is not obvious. In end-milling, when edge radius and milling depth are in the same order magnitude or the difference is not obvious, milling depth should be a little bigger than selected cutter edge radius value.

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48

Zong, Wen Jun, Dan Li, T. Sun, K. Cheng, and Ying Chun Liang. "The Factors Influencing on Cutting Edge Radius of Ultra-Precision Diamond Cutting Tools in Mechanical Lapping." Key Engineering Materials 304-305 (February 2006): 345–49. http://dx.doi.org/10.4028/www.scientific.net/kem.304-305.345.

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A brittle-ductile transition lapping mechanism is proposed for the mechanical lapping of ultra-precision diamond cutting tools, and then the critical depths of cut for brittle-ductile transition in different orientations and on different planes are deduced in theory. Combined the critical lapping depth with the contact accuracy between rotating scaife and lapped tool surface, the influences of processing factors on cutting edge radius are studied. Both the theoretical analyses and experimental results indicate that the vibration of lapping machine tool and surface quality of scaife have enormous influences on the sharpened cutting edge. And lapping compression force has an optimal value. Lapping rate should be considered when lapping velocity is selected. But the smaller the lapping velocity is, the littler the cutting edge radius sharpened. Finally, the optimal selections are performed for each influencing factor and a perfect diamond tool is lapped in ductile mode with a cutting edge radius of 30~40nm and a surface roughness Ra of 0.7nm.

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49

Dong, Da Peng, Xiao Hu Zheng, Ming Chen, and Qing Long An. "Finite Element Analysis of Cutting Force and Burr Formation in Micro-Cutting of Titanium Alloy Considering Tool Edge Radius." Advanced Materials Research 426 (January 2012): 235–38. http://dx.doi.org/10.4028/www.scientific.net/amr.426.235.

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In recent years, with the development of machinery industry, micro-cutting technologies have been gradually moving into engineering realization. The paper carries out a series of works on simulation modeling of micro-cutting of Ti-5Al-5V-5Mo-3Cr considering tool edge radius. Unlike conventional cutting, in micro-cutting the effect of tool edge radius which has a marked impact on cutting force, specific cutting energy, burr formation and burr size can no longer be neglected.

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50

Uhlmann, E. Prof, and S. Roßkamp. "Definiertes Kantenrunden durch Strömungsschleifen*/Accurately defined edge rounding by abrasive flow machining." wt Werkstattstechnik online 106, no. 06 (2016): 400–406. http://dx.doi.org/10.37544/1436-4980-2016-06-30.

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Анотація:

Die Feinbearbeitung von innenliegenden Werkstückkanten ist nur mit wenigen Fertigungsverfahren möglich. Nun liegen neue Erkenntnisse zu den Potentialen des Strömungsschleifens in dieser Bearbeitungsaufgabe vor. So zeigt dieser Fachbeitrag einerseits die Qualifizierung gerundeter Kanten hinsichtlich der beiden Größen Radius und Form, andererseits werden Ergebnisse aus technologischen Untersuchungen zum Einfluss der Bearbeitungsparameter auf die Kantenrundung vorgestellt.   Only a few machining methods are suitable for finishing edges inside workpieces. Now there are new findings about the potentials of abrasive flow machining in this assignment. On the one hand the qualification of edges in regard to radius and shape will be outlined in this technical contribution. On the other hand the results of technological investigations about the influence of machining parameters on edge rounding will be presented.

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