Relevant bibliographies by topics / Gear grinding temperature

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers

Academic literature on the topic 'Gear grinding temperature'

Author: Grafiati
Published: 30 May 2022
Last updated: 31 May 2022

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Journal articles on the topic "Gear grinding temperature"

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Ren, Xiao Zhong, and Hai Feng Hu. "Analysis on the Temperature Field of Gear Form Grinding." Applied Mechanics and Materials 633-634 (September 2014): 809–12. http://dx.doi.org/10.4028/www.scientific.net/amm.633-634.809.

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Aiming at the issue on grinding burn of tooth face, the temperature field formed in helical gear form grinding was analyzed. The finite element model of the single tooth of helical gear was firstly established. Considering the nonlinear relation of the physical properties of gear material to temperature, 3D finite element simulation of transient temperature field was performed by using the rectangular moving heat source model. Finally, the temperature field distribution on tooth face was achieved. The study results show that the temperature is relative low when grinding starts, then the temperature increases rapidly, and the temperature reaches the maximum value at the end of grinding; the increase of grinding depth can result in the rise of temperature when other parameters are the constants.
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Lishchenko, N. V., and V. P. Larshin. "Profile Gear Grinding Temperature Reduction and Equalization." Journal of Engineering Sciences 5, no. 1 (2018): A 1—A 7. http://dx.doi.org/10.21272/jes.2018.5(1).a1.

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Ming, Xing Zu, Hong Zhi Yan, Guo Qi He, and Jing Zhou. "Experiment Study on Micro-Hardness and Structure of NC Grinding Surface Layer of Spiral Bevel Gears." Applied Mechanics and Materials 127 (October 2011): 560–68. http://dx.doi.org/10.4028/www.scientific.net/amm.127.560.

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Through the analyses of experiment,mechanism of dislocation and coupling of grinding temperature and deformation field,many conclusions are gotten.Firstly,a tempering metamorphic layer of lower hardness is formed in hardening zones of grinding layer of spiral bevel gear. Secondly,the microstructure of grinding tooth surface is acicular martensite+residual austenite+ a small amount of carbides,and it’s outside to the inside presents the variation of "fine→coarser→finer".Thirdly, the critical condition of grinding burns is obtained,that is when grinding temperature is above 600°C,metamorphic layer depth is greater than 0.2mm or more. The formation characteristics of grinding cracks is also revealed. These provide a basis for the NC grinding quality control of spiral bevel gears.
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Liu, Xinrong, and Zhonghou Wang. "Research on High-Precision Form Grinding Technology of Gear Based on Ambient Temperature Adaptability." Mathematical Problems in Engineering 2018 (July 15, 2018): 1–13. http://dx.doi.org/10.1155/2018/4619624.

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The thermal error of high-precision computer numerical control (CNC) form grinding machine has become the critical factor affecting its locating precision. Because the thermal error is more complicated to be measured directly, most of the measurement tests are usually aimed at no-load conditions. In this article, a method to evaluate the machine tool thermal error based on the principle of tooth profile error through the gear grinding precision is presented. Based on high-precision CNC form grinding machine need to maintain isoperibol, this paper proposed the ambient temperature as a variable, for different ambient temperature to measure the thermal error of the machine tool. According to the measurement results of the thermal error, the method of partial least squares neural network is used to structure the thermal error prediction model of the machine tool. The experimental data show that the grade of the gear precision can reach four levels at different temperatures. This approach shows a promising prospect in the application of high-precision CNC gear form grinding machine in the future.
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Ming, Xing Zu, Zhong Gun Li, Xian Wen Xiong, and Jing Zhou. "Experimental Research on Grinding Surface Layer Behavior and Process Parameter Optimization of Spiral Bevel Gears." Advanced Materials Research 936 (June 2014): 1707–15. http://dx.doi.org/10.4028/www.scientific.net/amr.936.1707.

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Based on the test analyses of grinding surface layer behavior of spiral bevel gears, many conclusions are gotten. Compressive residual stresses are occurred on grinding tooth surface, tensile residual stresses are located in tooth layer, and change laws of grinding residual stresses are different from ones of grinding surface roughness Ra as the grinding process parameters. A temper layer is occurred in tooth layer after normal grinding, and the micro-hardness of grinding surface is lower. When arriving at the critical condition, namely grinding temperature is above 600 degree Celsius, and metamorphic layer depth is greater than 0.2mm, different degree of grinding burn is produced, and their microstructures are changed. Based on grinding orthogonal test L16(45), the optimizing configuration of grinding process parameters of spiral bevel gear is obtained by using a mean variance analysis of integrated balance method. Based on the test optimization of grinding surface layer behavior, the comprehensive performances of grinding surface, such as grinding residual stresses, surface roughness, micro-hardness and structure, metamorphic layer depth et al, are better. These provide a basis for improvement of grinding surface quality of spiral bevel gears.
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Yang, Shuying, Weifang Chen, Zhiqiang Wang, and Yanfeng Zhou. "Modelling and experiment of gear hob tooth profile error for relief grinding." Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture 235, no. 13 (May 12, 2021): 2081–92. http://dx.doi.org/10.1177/09544054211017297.

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Gear hob is an important tool that is most used in gear processing. Hob accuracy directly exerts an overwhelming influence on the quality of the processed gear. Generally, the hob tooth profile accuracy is mainly determined by relief grinding process. Studies on tooth profile errors of gear hobs caused by severe friction and cutting with the high-speed rotation of the wheel during the form grinding machining of hobs are limited. Thus, a theoretical model of the tooth profile error prediction under different machining parameters was established based on the analysis of coupling influence of high temperature and high strain rate on gear hobs in the relief grinding process. The model was completed on the basis of the dynamic explicit integral finite element method of thermo-mechanical coupling. Through the prediction model, the influence of the grinding depth ap, feed speed Vw and grinding speed Vs on the tooth profile error can be analysed. In addition, an algorithm for accurately calculate the grinding wheel axial profile by combining instantaneous envelope theory and hob normal tooth profile was proposed. The hob relief grinding experiments were carried out using the proposed grinding wheel profile algorithm. The relative error of the prediction obtained by comparing the calculation results of the prediction model with the experimental results is within 10%. Results prove the validity of the prediction model. This finding is greatly important for optimising the accuracy of hob relief grinding.
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Kruszyński, B. W., and C. A. van Luttervelt. "Prediction of temperature and surface integrity in gear grinding." International Journal of Machine Tools and Manufacture 34, no. 5 (July 1994): 633–40. http://dx.doi.org/10.1016/0890-6955(94)90048-5.

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8

Dychtoń, Kamil, Andrzej Gradzik, Łukasz Kolek, and Krzysztof Raga. "Evaluation of Thermal Damage Impact on Microstructure and Properties of Carburized AISI 9310 Gear Steel Grade by Destructive and Non-Destructive Testing Methods." Materials 14, no. 18 (September 14, 2021): 5276. http://dx.doi.org/10.3390/ma14185276.

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Advanced aircraft gearboxes operate under high mechanical loads. Currently, aircraft gears are manufactured from chromium–nickel–molybdenum steel grades such as AISI 9310 or Pyrowear 53. The major causes of gear failure are wear and fatigue cracking. As the crack initiation occurs predominantly on the component surface, the gears are routinely subjected to surface hardening processes such as low-pressure carburizing and case hardening. The gears are manufactured in a multiple operation process, in which teeth grinding is a crucial step. Selection of improper grinding conditions can lead to local heat concentration and creation of grinding burns, which are small areas where microstructure and properties changes are induced by high temperature generated during grinding. Their presence can lead to significant reduction of gear durability. Therefore destructive and non-destructive (NDT) quality-control methods such as chemical etching or magnetic Barkhausen noise (MBN) measurements are applied to detect the grinding burns. In the area of a grinding burn, effects related to the over-tempering or re-hardening of the carburized case may occur. In this paper, the results of the studies on the characterization of microstructure changes caused by local heating performed to simulate grinding burns are presented. The areas with the over-tempering and re-hardening effects typical for grinding burns were formed by laser surface heating of carburized AISI 9310 steel. Analyses of the microstructure, residual stresses, retained austenite content, and non-destructive testing by the MBN method were performed. The correlation between the MBN value and the properties of the modified surface layer was identified. It was also found that the re-hardened areas had similar characteristics of changes in the Barkhausen noise intensity, despite the significant differences in the width of the overheated zone, which depended on the laser-heating process conditions.
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9

de Oliveira Teixeira, Patricia, Jens Brimmers, and Thomas Bergs. "Investigation of Mechanical Loads Distribution for the Process of Generating Gear Grinding." Journal of Manufacturing and Materials Processing 5, no. 1 (January 27, 2021): 13. http://dx.doi.org/10.3390/jmmp5010013.

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In grinding, interaction between the workpiece material and rotating abrasive tool generates high thermo-mechanical loads in the contact zone. If these loads reach critically high values, workpiece material properties deteriorate. To prevent the material deterioration, several models for thermomechanical analysis of grinding processes have been developed. In these models, the source of heat flux is usually considered as uniform in the temperature distribution calculation. However, it is known that heat flux in grinding is generated from frictional heating as well as plastic deformation during the interaction between workpiece material and each grain from the tool. To consider these factors in a future coupled thermomechanical model specifically for the process of gear generating grinding, an investigation of the mechanical load distribution during interaction between grain and workpiece material considering the process kinematics is first required. This work aims to investigate the influence of process parameters as well as grain shape on the distribution of the mechanical loads along a single-grain in gear generating grinding. For this investigation, an adaptation of a single-grain energy model considering the chip formation mechanisms is proposed. The grinding energy as well as normal force can be determined either supported by measurements or solely based on prediction models.
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Umezaki, Yoji, Yasutsune Ariura, Toshio Suzuki, and Ryohei Ishimaru. "High-Speed Finishing of Hard Gear Teeth with cBN-Tipped Hob." International Journal of Automation Technology 2, no. 5 (September 5, 2008): 348–53. http://dx.doi.org/10.20965/ijat.2008.p0348.

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The hobbing finish of hard gear teeth such as case-hardened gears is anticipated for practical use in high efficiency production. We studied wear and finished surface properties in cutting tests using a cubic boron nitride (cBN) hob cutter in high-speed cutting at 900 m/min of case-hardened steel. The cBN content in tip ingredients is related to wear, and tips high in cBN content are superior in wear resistance. The high thermal conductivity of cBN tips helps transfer cutting temperature heat to chips, melting and adhering them to the relief surface. Flaking may occur on the cutting edge but new chipping does not occur although chipping may exist after grinding. Finished surface roughness is influenced by horning on the cutting edge. Round horning leads to a smooth surface. High-speed finishing with cBN-tipped hobs is analyzed in view of cBN tip grinding and finished surface properties, in addition to wear properties.
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Dissertations / Theses on the topic "Gear grinding temperature"

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Ліщенко, Наталя Володимирівна. "Підвищення продуктивності профільного зубошліфування на верстатах з ЧПК на основі адаптації елементів технологічної системи." Thesis, НТУ "ХПІ", 2018. http://repository.kpi.kharkov.ua/handle/KhPI-Press/37663.

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Дисертація на здобуття наукового ступеня доктора технічних наук за спеціальністю 05.02.08 – технологія машинобудування. – Національний технічний університет "Харківський політехнічний інститут", Харків, 2018. Дисертація присвячена рішенню важливої науково-технічної проблеми підвищення продуктивності бездефектного профільного зубошліфування на верстатах з ЧПК на основі розробки відповідних технологічних передумов та підсистем проектування, моніторингу і технологічної діагностики операції, які дозволяють виконувати адаптацію елементів технологічної системи до більш високої продуктивності. Для цього розроблено методологію дослідження технологічної системи зубошліфування з використанням наукових методів моделювання, оптимізації і керування, а також відповідні технологічні передумови у вигляді комплексу цілеспрямованих методів і засобів інноваційної технології профільного зубошліфування: математичні моделі припуску для перетворення невизначеності припуску у величину відводу шліфувального круга, метод вирівнювання припуску по периферії зубчастого колеса без внесення корекції в його кутове положення, метод адаптивної правки профільного шліфувального круга тощо. Теоретично показано і практично підтверджено технологічну перевагу високопоруватих шліфувальних кругів у порівнянні зі переривчастими кругами. Виконано комплекс експериментальних досліджень і заводських випробувань, що підтвердили ефективність розроблених методів і засобів.
Thesis for the degree of doctor of technical sciences on specialty 05.02.08 – manufacturing engineering. – National Technical University "Kharkiv Polytechnic Institute", Kharkiv, 2018. The thesis is devoted to solving an important scientific and technical problem of increasing the productivity of defect-free profile gear grinding on CNC machines on the basis of the development of appropriate technological preconditions and subsystems for the designing, monitoring and diagnosing of the operation, which allow adapting the elements of the grinding system to higher productivity. For this purpose a methodology is developed for researching the profile grinding system using scientific methods of modeling, optimization and control, as well as corresponding technology preconditions in the form of a set of purposeful methods and means of innovative profile grinding technology, to wit: grinding stock mathematical models for the transformation of the grinding stock uncertainty into the taking grinding wheel away from a gear to be grinded, method of the grinding stock aligning on the gear periphery without making corrections in its angular position, method of a profile grinding wheel adaptive dressing, etc. The software for these subsystems is created on the basis of the mathematical models of the temperature field with and without taking into account the effect of forced cooling. The technological superiority of high-porosity grinding wheel has been theoretically demonstrated and practically confirmed in comparison with special discontinuous wheel. Complex of experimental research and factory tests is performed for confirming the effectiveness of the methods and means developed.
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Ліщенко, Наталя Володимирівна. "Підвищення продуктивності профільного зубошліфування на верстатах з ЧПК на основі адаптації елементів технологічної системи." Thesis, Одеська національна академія харчових технологій, 2018. http://repository.kpi.kharkov.ua/handle/KhPI-Press/37665.

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Дисертація на здобуття наукового ступеня доктора технічних наук за спеціальністю 05.02.08 – технологія машинобудування. – Національний технічний університет "Харківський політехнічний інститут", Харків, 2018. Дисертація присвячена рішенню важливої науково-технічної проблеми підвищення продуктивності бездефектного профільного зубошліфування на верстатах з ЧПК на основі розробки відповідних технологічних передумов та підсистем проектування, моніторингу і технологічної діагностики операції, які дозволяють виконувати адаптацію елементів технологічної системи до більш високої продуктивності. Для цього розроблено методологію дослідження технологічної системи зубошліфування з використанням наукових методів моделювання, оптимізації і керування, а також відповідні технологічні передумови у вигляді комплексу цілеспрямованих методів і засобів інноваційної технології профільного зубошліфування: математичні моделі припуску для перетворення невизначеності припуску у величину відводу шліфувального круга, метод вирівнювання припуску по периферії зубчастого колеса без внесення корекції в його кутове положення, метод адаптивної правки профільного шліфувального круга тощо. Теоретично показано і практично підтверджено технологічну перевагу високопоруватих шліфувальних кругів у порівнянні зі переривчастими кругами. Виконано комплекс експериментальних досліджень і заводських випробувань, що підтвердили ефективність розроблених методів і засобів.
Thesis for the degree of doctor of technical sciences on specialty 05.02.08 – manufacturing engineering. – National Technical University "Kharkiv Polytechnic Institute", Kharkiv, 2018. The thesis is devoted to solving an important scientific and technical problem of increasing the productivity of defect-free profile gear grinding on CNC machines on the basis of the development of appropriate technological preconditions and subsystems for the designing, monitoring and diagnosing of the operation, which allow adapting the elements of the grinding system to higher productivity. For this purpose a methodology is developed for researching the profile grinding system using scientific methods of modeling, optimization and control, as well as corresponding technology preconditions in the form of a set of purposeful methods and means of innovative profile grinding technology, to wit: grinding stock mathematical models for the transformation of the grinding stock uncertainty into the taking grinding wheel away from a gear to be grinded, method of the grinding stock aligning on the gear periphery without making corrections in its angular position, method of a profile grinding wheel adaptive dressing, etc. The software for these subsystems is created on the basis of the mathematical models of the temperature field with and without taking into account the effect of forced cooling. The technological superiority of high-porosity grinding wheel has been theoretically demonstrated and practically confirmed in comparison with special discontinuous wheel. Complex of experimental research and factory tests is performed for confirming the effectiveness of the methods and means developed.
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Book chapters on the topic "Gear grinding temperature"

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Lishchenko, N. V., and V. P. Larshin. "Profile Gear Grinding Temperature Determination." In Proceedings of the 4th International Conference on Industrial Engineering, 1723–30. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-95630-5_185.

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Lishchenko, N. V., and V. P. Larshin. "Gear-Grinding Temperature Modeling and Simulation." In Lecture Notes in Mechanical Engineering, 289–97. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-22063-1_32.

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Conference papers on the topic "Gear grinding temperature"

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Glover, Rodney. "Design of High Speed Gears, Low Load Gears for Minimizing Gear Whine Noise." In ASME 2013 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/detc2013-13676.

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The main purpose of the supercharger timing gears is to keep the rotors from contacting each other. They are often lightly loaded and designed for low noise. As timing gears, they have by definition a ratio of 1.0. Furthermore, the timing gears are presently spur gears due to the cost of assembling helical gears onto the rotor shafts without allowing timing errors between the rotors. The original timing gear designs were spur gears with contact ratios slightly above 2.0. A major NVH issue has been gear whine noise, because most applications are in luxury vehicles and are evaluated with the hood open and the engine at idle. In this operating condition, the background noise is very low and any tonal gear whine noise is audible. The first effort was to push the gear manufacturing quality to the limits of modern grinding capability. In order to further reduce gear whine noise, the designs have evolved to finer pitch gearing with a contact ratio over 3.0 to reduce transmission error. Micro-geometries were optimized for low transmission error (TE) at low load. OSU Gear Lab’s RMC and LDP became primary tools in optimizing the gear designs for minimum TE. An important factor when increasing the contact ratio is to not increase the sliding friction significantly to keep the fixed oil sump temperature from increasing too much and cause wear issues in operation. Typically, the new high contact ratio spur gear designs in production have reduced the gear whine levels by more than 6 dB and have had very few noise complaints.
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Maenosono, Koji, Akira Ishibashi, and Keiji Sonoda. "Impact Bending Fatigue Strength of Gear Teeth Case-Hardened by Nitriding and Carburizing." In ASME 2000 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2000. http://dx.doi.org/10.1115/detc2000/ptg-14380.

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Abstract Almost all gears used for power transmission of automobiles have been case-hardened by carburizing. Recently, strict demand for reducing running noise and vibration from the power transmission gears requires, in most cases, an additional finishing operation such as grinding and/or honing after carburizing. Nitriding is conducted at a temperature of about 820 K which is lower than the transformation temperature, and thus quenching is not required, resulting in smaller heat treatment deterioration. However, nitrided gears hardly used in practice as for power transmission gears. In the present investigation, experiments were conducted, using test gears case-hardened by two different methods, carburizing and plasma-nitriding. Test results showed that the fatigue strength of carburized gears was higher than that of nitrided gears in most cases when the test gears were made from the same steel. However, the impact fatigue strengths of nitrided gears made from a high tension steel with additional alloy elements Mo and V were higher than those of carburized gears made from the carbon and alloy steels which have been, used as for gear material. The other high tension steel containing neither Mo nor V could not bring about a sufficiently high fatigue strength in comparison with the conventional carburized gears. It should be noted that the impact fatigue strength of carburized gears made from the high tension steel was higher than the ones made of conventional carburizing steel.
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Mayer, John E., Angie H. Price, Ganesh K. Purushothaman, and Sanjay V. Gopalakrishnan. "Specific Grinding Energy Causing Thermal Damage in Precision Gear Steels." In ASME 1999 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1999. http://dx.doi.org/10.1115/imece1999-0703.

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Abstract Thermal damage (burn) in carburized and hardened precision gear steels caused by grinding was investigated. Excessive grinding temperatures cause grinding bum and result in excessive scrappage. AISI 9310 and X53 gear steels, used in helicopters and tilt-rotor aircraft, respectively, were prepared and heat-treated by a production partner. Grinding tests were conducted on these steels. Nital etching was used to detect grinding burn. Models were established to predict onset of thermal damage for AISI 9310 and X53 steels based on specific grinding energy determined from grinding force measurements. The models were compared to results published for other steels.
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Sitzmann, André, Thomas Tobie, Karsten Stahl, and Stefan Schurer. "Influence of the Case Properties After Nitriding on the Load Carrying Capacity of Highly Loaded Gears." In ASME 2019 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/detc2019-97405.

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Abstract The load carrying capacity of highly loaded gears can be increased by thermochemical surface treatments such as nitriding or case hardening. In contrast to case hardening, the nitriding treatment is carried out at lower process temperatures and therefore creates lower distortion. As a result, grinding after nitriding is usually not necessary. Nitrided gears are ordinarily characterized by a thin, high-hardness, a few micrometers thick compound layer of iron and alloy element nitrides directly on the surface and a subsequent diffusion layer reaching more deeply into the material. Nitriding, therefore, provides an alternative to case hardening for distortion-sensitive components and offers potential for cost savings in the production of highly loaded gears. This publication will focus on the influence of nitriding on the load carrying capacity of highly loaded gears. In addition, this paper summarizes the current state of knowledge of nitrided gears and gives an insight into current research in the field of nitrided gears. In particular, the influence of the compound layer on the tooth root bending strength and the flank load carrying capacity achieved within the research project FVA 386 II is discussed.
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