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Dissertations / Theses on the topic 'Lathe spindle'
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1
Kutlu, Asim. "Design and development of a lathe spindle." Thesis, KTH, Maskinkonstruktion (Inst.), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-187477.
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Verktygsmaskiner möjliggör tillverkning av materiekroppar med olika form. Svarvar är de vanligaste maskinerna för att bearbeta runda detaljer. Man kan säga att en svarvspindeln möjliggör hela skärprocessen och att den därför är den viktigaste komponenten i en svarv. En svarvaxel, eller en spindel, bearbetar det roterande ämnet med ett stationärt skärverktyg, och materialet tas bort vid skärverktygets kontakt med ämnet.Det här arbetet syftar till att konstruera en spindel som uppfyller en given kravspecifikation. Specifikationen innehåller prestandakrav, som rotationshastighet och kraft, geometri och dimensionskrav, som storlek och håldiameter, samt vilka komponenttyper som ska användas, som t.ex. motorn.I enlighet medprestandakravet definieras maximalt lastscenario. Med givna svarvningsparametrar beräknas skärkraften på materialet vid dess kontakt med skärverktyget. En inbyggd motor som är tillräckligt kraftfull och uppfyller hastighets- och effektkraven väljs och en preliminär konstruktion skapas med valda lager, lagerordningar och axelmaterial.Beteendet av den preliminära spindelkonstruktionen, under påverkan av skärkrafter och rotation analyseras statiskt och dynamiskt med hjälp av FEM och analytiska modeller. Inom ett givet område optimeras avståndet mellan lagren, vilka utgör spindelns stöd.Genom verifikation och optimering av den preliminära konstruktionen skapas den slutliga detaljkonstruktionen. Slutkonstruktionen innefattar alla nödvändiga detaljer och viktiga krav beaktas och balanseras, som att vara tillverkningsbar och monterbar, tätningssystem, ett system för hastighetsmätning och lägesmätning, kabelvägar och andra nödvändiga punkter. I slutänden konstrueras en spindel som uppfyller den definierade kravspecifikationen.Machine tools enable the industry to shape almost any material by a variety of methods. Lathes are one of the most common machines to cut circular parts with precision and accuracy. And the spindle of a lathe can be entitled as the most critical mechanical component which makes the cutting process possible. A lathe spindle rotates the workpiece to be cut against a stationary rigid cutting tool, therefore removing material through the contact edge. In this thesis, a spindle is aimed to be designed which complies with a set of specifications defined. These specifications consists of performance requirements such as speed and power, dimensional constraints for space and bore diameter, and component types which must be used, such as for the motor.Based on the performance requirements, a maximum loading case with cutting parameters is defined. With these cutting parameters, cutting forces acting to the material from at the contact point with the cutting tool are calculated. A built-in motor with sufficient power and speed specifications is selected based on the maximum cutting forces and speed requirements. A preliminary design is made up by selecting bearings, bearing arrangements and shaft material.With static and dynamic analysis conducted on the preliminary design through analytical models and FEM, the behavior of the spindle is investigated separately under the cutting forces and during the rotation. Within an allowable range, optimization is made on the bearing span distances which are the support locations for the spindle.Following the verification and optimization of the preliminary design, the final detail design of the spindle is made. The final design includes the design of all the necessary parts, by taking the manufacturability, assemblability, sealing design, a system for speed and position measurements, cable paths and more necessary points into account. Ultimately, a spindle which meets the requirements and specifications successfully is designed as the expected outcome of this thesis.
2
Suda, Martin. "Vřeteník a hlavní vřeteno horizontálního soustružnického centra." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2019. http://www.nusl.cz/ntk/nusl-402636.
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The thesis deals with headstock and spindle of the universal turning center. In the introduction part is a destription of the headstock morfology. It describe how the spindle and headstock can be solved in terms of its bearing, installation, used clamping interface, lubrrication, cooling and sealing. The second part is devoted to the universals turning machines which are available on the market. In the final part is the practical solution of the headstock and spindle on which can be performed for milling and drilling operation instead of turning.
3
Sovadina, František. "Návrh vřeteníku soustruhu." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2021. http://www.nusl.cz/ntk/nusl-443734.
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The thesis deals with the design and construction of headstocks of a turning centre. The aim is to design a spindle with an output of 20 kW and a maximum speed of 5000 1/min. The research part of the thesis is focused on the description of the basic parameters of the headstock and turning centres needed for the construction of the headstock and contains an analysis of the available spindles on the market. The next part of the thesis deals with the selection and calculation of cutting conditions and the necessary parameters. Analytical calculations are then verified using FEM analysis. At the end of the thesis, a 3D model was developed and headstock drawing documentation.
4
Skládaný, Jakub. "Volba řezných nástrojů, podmínek a obráběcího stroje pro soustružení cívek." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2016. http://www.nusl.cz/ntk/nusl-241670.
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The purpose of work is to provide a manufacturing processes, cutting and machine tools for machining of small parts. The proposals are designed for high volume production with a maximum productivity. The first half is largely nature of the search, which analyzes issue of tools and machines for production of rotary parts. Further proposals are developed manufacturing processes for different types of machines including multi-spindle lathes. The main result of this work is to determine appropriate type of machine for the production of specified parts.
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Sedlák, Pavel. "Konstrukce multifunkčního obráběcího centra." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2011. http://www.nusl.cz/ntk/nusl-229854.
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This master thesis deals with the construction of multi-functional machining centre. The theoretical part describes the history of lathes, trends in production of lathes and individual machine parts. The practical part is the structural design of the spindle with positioning in the C axis, the second spindle (including drive in Z axis) and the turret (including drive in the X and Z axis). A 3-D model of the entire lathe assembly modeled in Autodesk Inventor 2010 is also included.
6
Kráčmar, Tomáš. "Konstrukce vřeten vícevřetenového soustružnického automatu." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2016. http://www.nusl.cz/ntk/nusl-241713.
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This master‘s thesis contains a design of multi-spindle automatic lathe spindles for the work of the rods maximum diameter of 7 mm. The work deals with a new concept of the drive spindle, where the spindles are driven by external asynchronous motor through the gears with internal teeth attached to the outside of the spindle drum instead of the current method of driven by central coaxial shaft. The thesis research of multi-spindle lathes including a description of the main nodes, design, strength calculations, bearing durability and a simulation model for simulation acceleration and load drives and spindles from the cutting process.
7
Pavelka, Radomil. "Pohon vřeten pětivřetenového soustružnického automatu." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2014. http://www.nusl.cz/ntk/nusl-231522.
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The subject of the thesis is design of independent spindle drive for multi-spindle automatic lathe MORI-SAY TMZ 520 CNC manufactured by TAJMAC-ZPS. The thesis will introduce the representatives of manufacturing program of TAJMAC-ZPS multi-spindle automatic lathes division and there will be a brief description of their main constructional parts. The main objective of the thesis is an engineering design of testing device which will be bulit for verification of the correct drive concept. There is also many calculations and detailed description of the engineering design. The testing device is made for internal needs of TAJMAC-ZPS.
8
Sedlář, Jiří. "Konstrukce dvouosého suportu vícevřetenového soustružnického automatu." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2021. http://www.nusl.cz/ntk/nusl-443158.
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This diploma thesis deals with the design of a two-axis multi-spindle lathe carriage. In the first part, there is made a research, and its aim is to find possible variants of design solutions. After the best rated variant was selected, the thesis further continues with the necessary technical calculations of the main design nodes such as a synchronous servomotor, ball screw, linear guide and bearing. The design itself was carried out with regard to calculations and the resulting model was examined in terms of dynamic stability. The subject of examination was to find the natural frequencies of the assembly and to determine the amplitudes of the oscillations which arise from the harmonic excitation force. Finally, Lobe diagrams for grooving and longitudinal turning operations were drawn.
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Watson, Anna Louise. "Normality and the aging process in the thoracic spine two late prehistoric Ohio populations /." Columbus, Ohio : Ohio State University, 2009. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1242766993.
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Watson, Anna L. "Normality and the Aging Process in the Thoracic Spine: Two Late Prehistoric Ohio Populations." The Ohio State University, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=osu1242766993.
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11
YU, SHUN-XING, and 余順興. "The dynamic analysis of a lathe spindle." Thesis, 1989. http://ndltd.ncl.edu.tw/handle/96801875712698815365.
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Cha, Shu-Lan, and 查術蘭. "The Study of High Speed Spindle for Computerized Numerical Control Lathe." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/54139341797197477341.
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碩士國立彰化師範大學
電機工程學系
96
Abstract The design and manufacture of the traditional flat-bed lathe in Taiwan has learned from Japanese manufacture technology. It has been focused on low price products due to market trend but relatively low benefits. Most lathe spindle are designed to be taper roller type bearing which has no any other characteristics except low price. Platform lathe of Taiwan cannot compete with lathe products from European Union, not to mention the high-price products. The high-price products are mostly sold to the America and Europe for farming, household, and production lines. The objective of this research is to develop high-level and high-quality main shaft for lathe.
13
Hsieh, Po-Chien, and 謝伯謙. "Prediction and Analysis for the Spindle Behavior of CNC Lathe Structure." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/rcf5c2.
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碩士國立彰化師範大學
機電工程學系所
105
In the process of making the machine tool, the spindle performance is the key factor that affects the quality and efficiency of the cutting process. From the perspective of the designers, test analysis is the basis to verify the design’s pros and cons and a reference to design changes that can be used as a reference for end users to purchase the machine equipment. In this thesis, the experiment for the spindle of the lathe is studied. Measured errors from the experiment are carried out for the action of compensation and design of structural behavior. The spindle impacts on the quality of geometric accuracy and roughness is eliminated effecting in the lathe processing. The reason for this study is to figure out the geometric accuracy and surface roughness for the turning of the machine that did not meet the expected standard. Several experiment set up detection methods are developed, including the spindle idle vibration, spindle rotation accuracy, spindle thermal deformation, and static stiffness. Different experimental conditions were interpreted for knowing the dynamic and static behavior of the lathe spindle. Experimental results show that geometric accuracy changes due to the spindle thermal deformation under the cutting force. Temperature and displacement into the regression analysis method are extracted to find the value for compensation. And surface roughness possibility evaluating the behavior of the spindle structure by the spindle idle vibration, spindle rotation accuracy and static stiffness items to analyze the correlation between the spindle structure behavior and the roughness. Keyword: spindle idle vibration、spindle rotation accuracy、spindle thermal deformation、static stiffness、regression analysis.
14
LANG, WANG CHIH, and 汪治郎. "Research and Development of a Lathe Spindle by Using Heuristic Knowledge." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/04565056169319440092.
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碩士逢甲大學
機械與電腦輔助工程學系
105
The machine tool can provide a variety of processing methods, or even almost cut almost all the material, processing the shape we need. In which the lathe is a very long history, but also the application of a wide range of machine tools, the work of the work is to hold or fixed in the main turn of the fixture or fixture, so that rotation, and then fixed in Knife or turret hit the fixed tool turning, remove the unwanted material. Among them, high-speed lathes and CNC lathes can be processed by the main work - turning, drilling center hole, car teeth, boring, slotting, pick up, cut off and other functions. In recent years, the complex processing methods prevalent, so CNC lathes and therefore the development of composite CNC lathes, in addition to the function with a lathe, but also to provide the tool with the spindle to adjust the function, to provide milling, but also because there is no two Secondary processing of the repeated clamping problem, the accuracy is also greatly improved. According to the needs of diversified processing, it is necessary to define the bearing capacity of the cutting parameters, and then use these parameters to calculate the contact force from the cutting tool with the cutting force. Select the built-in motor motor with sufficient power and speed specifications, and then by selecting the bearing, bearing arrangement and shaft material. The static and dynamic analysis of the preliminary design is carried out by analyzing the model and FEM, and the behavior of the spindle is studied separately during the cutting force and rotation. Within the allowable range to optimize the bearing span as the spindle support position. Finally, meet the requirements and specifications of the successful spindle design for the expected results of this paper.
15
Yu, Yi-Hsio, and 余易修. "Using Reliability Statistics to Analyze The Stability of The Lathe Spindle Structure." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/hcpg8k.
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碩士國立虎尾科技大學
機械與機電工程研究所
102
Machine tool is an indispensable work of many machine tools, including vehicle industry、ship manufacturing、railway、electronic industrial machinery、 aircraft …etc。Not only increasing the accuracy requirements of the product，but also the accuracy requirements of the machine tool relative increase resulting that think about how we could improve the accuracy of machine tools。 This paper focuses on structural design problems machine tool spindleand experimental analysis of a spindle original design manufacturers to provide improved according to the manufacturer . A current problem is to find manufacturers spindle operation is not stable, and therefore how to prevent failure of the spindle and the spindle to reduce the incidence of failures, but also be able to quickly find out which part of the spindle failure. In this paper, namely the use of reliability engineering Spindle conducted on temperature, dynamic, pre-press, etc. experimental testing and measurement, and then analyzed according to the experimental data values and found that these factors affect the accuracy of the spindle, the proportion accounted for balancing is the highest, so we first major improvement for balancing, you can get quite a significant improvement.
16
Min-WeiTsai and 蔡明煒. "Thermal balance optimal design with neural network for a CNC lathe spindle head." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/65hqnx.
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碩士國立成功大學
機械工程學系
106
This study use a water-cooled film module with multiple physical coupling analysis and a neural network model that can estimate the nonlinear thermal distortion at the cutting point of the spindle head to estimate and control temperature distribution of a CNC lathe spindle head. In order to more effectively regulate the thermal errors of the machine tool, this study intends to obtain the simulation data of the key temperature points and thermal deformation of cutting points of the machine structure through numerical simulation analysis verified by the experiment of the real machine tool. Then, the data are input into the neural network for learning and training to establish a model that can quickly and effectively predict the temperature rise - heat deformation of the machine tool structure. In addition, this study uses the particle swarm optimization algorithm combined with the neural network to find the most appropriate water cooling film configuration. Key words：Machine tool, Thermal deformation, Artificial neural network, Particle swarm optimization algorithm, Adaptive thermal balance technique
17
Hung, Liao-Chih, and 廖志鴻. "Prediction and Analysis of the thermal behavior for high-speed lathe Spindle structure." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/60270667212352513676.
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碩士國立中興大學
機械工程學系所
100
In this research CNC lathe machine tool machine architecture for the asymmetry,it is difficult to set up online thermal error compensation technology.affent the machineing accuracy of machine tools,the main source of erroe for the thermal deformation of the spindle structure.Early from the design of the spindle with finite element analysis software can sinmulate the deformation of the structure of the overall pre and thus to modify the design configuration bearing the heat soure and the spindle structure of geometric relationships and to effectively eliminate or reduce the occurrence of thermal error.Thermal error experiment equipment of this study is first erected in the spindle structure body is set to 14 temperature sensors in the different experimental conditions to measure the spindle structure of the castion operation of the heat generated by the thermal temperature rise due to the spindle bearings and the use of eddy current displacement takethe structure of the thermal error due to fever and simulated values for comparison.The source of heat is from the operation of the bearing friction formula to calculate the size of the heat provided by the bearing manufacturers manual using ANSYS simulation software, and use trial and error learning to adjust its boundary conditions bearing haet to sinmulate the bearing due to running fever for the thermal behavior of the spindle structure. The analysis showed that the thermal temperature rise of the simulation part；its temperature rise can simulate the actual experimental conditions fixed speed of 1200rpm and 1800rpm fitting error within 5℃.In the thermal deformation for the simulation part；its carbon steel test bars X-axis and Y-axis direction displacement amount of simulation and experimental results have a big gap. Only a Z-axis thermal expansion forecast a 20％ error.And the use of the ARX model for spindle structure thermal error modeling and prediction about the thermal deformation of the spindle structure up to 170 micron up to ±5 microns.Proposed the ANSYS spindle structure of themrmal expansion drformation the use of thermal error model predictions （auto regressive exogenous（ARX））Z axis axial thermal error of the predictive value of about ±20 microns.The main purpose finite element analysis software to simulate the temperature distribution and displacement,reuse thermal error compensation model ARX thermal error prediction,this method can save the actual erection of experiments back to the initial design of the struceture, the modelthe time cost of he equipment. Therefore,the use of finite element anslysis software in qualitative research methods for the therma error prediction quantitatively accurate values will take a long time simulation analysis and thermal error experiment with each other than the set rule of thumb to find out the simulation.
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Yang, Chih-Kai, and 楊智凱. "An Optimal Design Analysis of Cooling Channel in a CNC Lathe Spindle System." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/13423078613757623316.
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碩士國立中興大學
機械工程學系所
105
The main purpose of this study is to analyze the heat transfer phenomena and the design of the cooling channel of a lathe spindle system. Heat sources including (rotary hydraulic cylinder, bearings, spindle pulley) were included in the current study. Based on numerical simulation results, the temperature variation, the thermal deformation and structure thermal displacement were discussed. To improve the thermal deformation a cooling channel design on the spindle system was tested numerically. Parameters of the cooling channel investigated are: channel diameter: ψ6mm,8mm,10mm, number of channels: 4 channels, 6 channels, 8 channels, and mass flow rate of coolant: 0.0851 Kg/s, 0.1134 Kg/s, 0.1417 Kg/s. According Taguchi method, nine sets of combinations of the above design parameters were determined and investigated via simulation. From the numerical results, it is concluded that the best parameters for the cooling channel design in the current study is 8 channels,ψ8mm in diameter, and mass flow rate of 0.0851 kg/s. The method and results of the current study can provide a useful reference for design and optimization of cooling channels in spindle system.
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You, Benfeng, and 游本豐. "Application of Multiple Regression to Thermal Errors Compensation Technology－Experiment on Workpiece Spindle of Lathe." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/24455244975025108249.
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碩士國立中正大學
高階主管管理碩士在職專班
101
This study is one of the intelligent machine tools technology–Thermal Errors Compensation Technology. This technology has been used widely in advanced machine tools manufacturers such as Japan, Germany etc. However, there’re only few domestic factories that commercialize this technology, most of them are still at the experimental stage. The lathe turns cylindrical workpiece with fixed tools. Through the rotating workpiece, and manufactures with fixed cutting tools. Due to the high changing speed and the frequency of the cutting load, long working hours results in heat deforming and affects the accuracy of the relative position between the tool and the workpiece. These small changes can damage the machining precision. Therefore, this study measures the temperature in the lathe, and the thermal errors of the workpiece spindle. Then we gathered the experimental statistics and analysis, by the multiple regression to analyze the relationship between the heat source and deformation, and made the three axis thermal errors model. Also, through analyzing the data, we keep adding items from polynomial, interaction and cyclical series in the model. Finally, based on the merits of the predictive ability of the model, we choose the best thermal errors model. This study successfully made thermal errors model standard deviation of the forecast error within 5 μm.
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Hsu, Chang-Yu, and 許長裕. "A Study on Tolerance Analysis and Adjustment for The Spindle Head of A CNC Lathe." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/43007511207058128290.
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碩士國立中興大學
機械工程學系所
105
Spindle is the key component of a machine tool thus requires high precision. In addition to the precision of the spindle, firm and accurate assembly also play important roles in its final precision. This study is aimed toinvestigating tolerance analysis and adjustment in the assembly of the spindle head system for a CNC lathe. A cost-tolerance model dedicated for this spindle is constructed. Sensitivity and contribution analysis of each tolerancing specification and corresponding fabrication cost, in addition to tolerance analysis, are employed for adjusting tolerancing of the spindle in order to ensure it satisfies precision requirement with lower fabrication cost. For estimating fabrication cost, cost-tolerancing models for different fabrication processes are developed based on cost estimation data from engineering practice. Machining cost can be estimated using the developed cost model through calculating machining time and cost coefficientcorresponding to the machining process. Machining time is calculated from material removal as well as process parameters while fabrication cost is estimated according to processequipment, tool accessories, fixture, labor as well as administration and other costs. Based on this model, a computer spread sheet is also developed for the designer to estimate the fabrication cost in tolerancing design. The main contribution of this study is to build cost-tolerancing model using machining time and the cost coefficient for estimating fabrication cost. This model, together with sensitivity analysis and contribution analysis, provide an approach for tolerancing design of a spindle that satisfies precision requirement with lower fabrication cost.
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Chang, Ching-Liu, and 張清流. "Proteomic analysis of molecular mechanism in late stage of repair processes of spinal cord injured rats." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/03414392085882935493.
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碩士環球科技大學
生物技術研究所
101
Acidic fibroblast growth factor (aFGF), acts as a potent neurotrophic factor, could stimulate the survival of neurons and re-growth of neurite in the injured spinal cord area. However, the molecular mechanism of protective effect of aFGF in vivo is still not clearly or fully understood. Previous studies showed that significant improvement in the locomotor behavior analysis resulted from of the aFGF-treated rats after contusive spinal cord injury (SCI). SCI will initiate the different pathological changes along with time, it is therefore, we would like to propose that aFGF may play different role at different time course during the repair processes. Proteomic and bioinformatic approach were adapted to investigate the protein profile changes of the damaged spinal cord tissue of the SCI rats treated either with or without aFGF at 28 days after contusive injury. We found that 25 protein spots were shown to have significant differential expression using proteomic approach. Using bioinformatic analysis, these proteins were categorized into five major expression patterns and five functional categories including structural activity, glucose metabolism, antioxidant/oxidoreductase activity, signal transduction and transporter activity according the biological process in which they are involved. Hence, the protective effect of aFGF at the late stage came from a set of teamwork of multiple factors that may attenuate neuronal injuries for providing a better environment recovering from the spinal cord damage. In this study, our results provide a better insight into the SCI regeneration mechanisms in the late stage of repair processes of SCI rat. Noticeably, in addition to shed light on the academic contribution to the mechanism of neural regeneration, the outcome of this research will also be beneficial for the clinical application of the SCI patients.
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Mikes, Tamás. "Late Mesozoic to Cenozoic erosion and sediment dispersal in the Dinaride orogen: a sedimentary provenance approach." Doctoral thesis, 2008. http://hdl.handle.net/11858/00-1735-0000-0006-B27F-B.
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