The Experts below are selected from a list of 276 Experts worldwide ranked by ideXlab platform
Kazuyoshi Shinma - One of the best experts on this subject based on the ideXlab platform.
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Accuracy Measurement and Evaluation of Straight Bevel Gear Manufactured by End Mill Using CNC Milling Machine
Journal of Mechanical Design Transactions of the ASME, 2009Co-Authors: Kazumasa Kawasaki, Kazuyoshi ShinmaAbstract:Straight Bevel Gears are usually manufactured with various machines and systems, and the tooth profiles are produced by grinding or machining by means of a tool with many cutting edges. In recent years, the Straight Bevel Gear has been manufactured by an end mill using a computer numerical control (CNC) milling machine because the use of the auxiliary apparatus, special cutters, and special machine tools is not needed. Using this method, the Gear manufacturing with high accuracy is an important problem. In this paper, the coordinate measurement of the Straight Bevel Gear manufactured in this method is performed and the Gear accuracy is evaluated. The tooth profiles of the Straight Bevel Gear generated by a quasi-complementary crown Gear instead of a conventional complementary crown Gear are introduced. For this study, the tooth profiles of the Straight Bevel Gear were modeled using a 3D computer-aided design system and the Gear was manufactured by an end mill using a CNC milling machine based on a computeraided manufacturing process. Afterward, the coordinates of many points on the Gear tooth surfaces were measured at random using a coordinate measuring machine. This coordinate measurement provides the information about the factors related to the Gear accuracy such as pressure angle, tooth angle error, workpiece setting angle, apex to back, and so on. Therefore, the values of the above factors were estimated and were compared with the theoretical ones, respectively. Copyright © 2009 by ASME.
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design and manufacture of Straight Bevel Gear for precision forging die by direct milling
Machining Science and Technology, 2008Co-Authors: Kazumasa Kawasaki, Kazuyoshi ShinmaAbstract:In the manufacture of Straight Bevel Gears, a precision forging method has been mainly used in recent years and the precision forging die has been usually manufactured using electric discharge machining. However, it is difficult to content the high productivity and low manufacturing cost using electric discharge machining because the Gears are produced through a process of several steps. In this article, a design and manufacture of a Straight Bevel Gear for a precision forging die by direct milling is developed in order to improve the productivity and manufacturing cost for the Gear production. The tooth profile of a Straight Bevel Gear generated by a quasi-complementary crown Gear instead of a usual complementary crown Gear is introduced. For this study, first the numerical coordinates on the tooth surface of the Straight Bevel Gear were calculated and the tooth profiles were modeled using a 3D-CAD system. Afterward, the direct milling of the precision forging die of the Straight Bevel Gear in the harden...
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Accuracy of Straight Bevel Gear by end mill using CNC milling machine
2007 Proceedings of the ASME International Design Engineering Technical Conferences and Computers and Information in Engineering Conference DETC2007, 2008Co-Authors: Kazumasa Kawasaki, Kazuyoshi ShinmaAbstract:Straight Bevel Gears are usually manufactured with various machines and systems, and the tooth profiles are produced by grinding or machining by means of a tool with many cutting edges. In recent years, the Straight Bevel Gear has been manufactured by an end mill using a CNC milling machine because the use of the auxiliary apparatus, special cutters, and special machine tools are not needed. Using this method, the Gear manufacturing with high accuracy is important problem. In this paper, the coordinate measurement of the Straight Bevel Gear manufactured in this method is performed and the Gear accuracy is evaluated. The tooth profiles of a Straight Bevel Gear generated by a quasi-complementary crown Gear instead of a conventional complementary crown Gear is introduced. For this study, first the tooth profiles of the Straight Bevel Gear were modeled using a 3D-CAD system and the Gear was manufactured by an end mill using a CNC milling machine based on a CAM process. Afterward, the coordinates of many points on the Gear tooth surfaces were measured at random using a coordinate measuring machine. This coordinate measurement provides the information about the factors relation to the Gear accuracy such as pressure angle, tooth angle error, root cone angle, and apex to back and so on. Therefore, the values of the above factors were estimated and were compared with the theoretical ones, respectively. Copyright © 2007 by ASME.
Song Deng - One of the best experts on this subject based on the ideXlab platform.
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Influence of alignment errors on contact pressure during Straight Bevel Gear meshing process
Chinese Journal of Mechanical Engineering, 2015Co-Authors: Song DengAbstract:Straight Bevel Gears are widely applied in automotive, aerospace, chemical and many other fields as one of the most common type of Gears. Currently, the researches on Straight Bevel Gears have focused on the fields of fatigue, wear, noise and vibration, while little attention is paid to the effect of multiple alignment errors on the Gear tooth wear. To study the influence of alignment errors on the Gear tooth wear, a simulated model of a Straight Bevel Gear pair is established. Then, the contact pressure on the tooth surface is analyzed under the various alignment errors according to the Archard wear relationship. The main combinations of alignment errors played vital roles on the tooth wear are investigated. The result shows that under the single alignment error, the contact pressure moves to the tooth heel and increases greatly at here when ΔP=0.1 or ΔG=0.1; when ΔE=−0.03, the contact pressure greatly increases at the tooth heel, but it obviously increases at the tooth toe when ΔE=0.03; the alignment error Δγ=1 has little effect on the contact pressure on the tooth surface. Moreover, the combination of ΔP, ΔG, ΔE
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influence of alignment errors on contact pressure during Straight Bevel Gear meshing process
Chinese Journal of Mechanical Engineering, 2015Co-Authors: Song DengAbstract:Straight Bevel Gears are widely applied in automotive, aerospace, chemical and many other fields as one of the most common type of Gears. Currently, the researches on Straight Bevel Gears have focused on the fields of fatigue, wear, noise and vibration, while little attention is paid to the effect of multiple alignment errors on the Gear tooth wear. To study the influence of alignment errors on the Gear tooth wear, a simulated model of a Straight Bevel Gear pair is established. Then, the contact pressure on the tooth surface is analyzed under the various alignment errors according to the Archard wear relationship. The main combinations of alignment errors played vital roles on the tooth wear are investigated. The result shows that under the single alignment error, the contact pressure moves to the tooth heel and increases greatly at here when ΔP=0.1 or ΔG=0.1; when ΔE=−0.03, the contact pressure greatly increases at the tooth heel, but it obviously increases at the tooth toe when ΔE=0.03; the alignment error Δγ=1 has little effect on the contact pressure on the tooth surface. Moreover, the combination of ΔP, ΔG, ΔE<0 and Δγ is the most dangerous type among the multiple alignment errors. This research provides valuable guidelines for predicting the tooth wear under various alignment errors.
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Influence of Technical Parameters on Contact Pressure in Straight Bevel Gear Meshing
Applied Mechanics and Materials, 2014Co-Authors: Qiu Ping Luo, Xiao Shuang Xiong, Jian Cai, Song Deng, Feng Qin LiAbstract:Wear is one of the main failure modes of Gears in the meshing performance, and contact pressure is the key factor to determine the wear of Gears. The main purpose of this paper is to investigate the contact pressure distribution and evolution laws in Straight Bevel Gear meshing. Based on a 3D FE model of the specific loaded assembling Straight Bevel Gear pair, the influence of friction coefficient f, torque T and elastic modulus E on the contact pressure of Straight Bevel Gear in a meshing circle is studied. The results show that the contact area and contact pressure increase dramatically with the increase of the torque. The contact area decreases and the contact pressure increases with the increase of elastic modulus. Friction coefficient almost has no effect on the contact area and contact pressure. This research has great theoretical significance to reveal the wear mechanism and improve the meshing performance of Straight Bevel Gears.
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finite element analysis of contact fatigue and bending fatigue of a theoretical assembling Straight Bevel Gear pair
Journal of Central South University, 2013Co-Authors: Song Deng, Song HuangAbstract:The aim of this work is to propose a 3D FE model of a theoretical assembling Straight Bevel Gear pair to analyze the contact fatigue on the tooth surface and the bending fatigue in the tooth root. Based on the cumulative fatigue criterion and the stress-life equation, the key meshing states of the Gear pair were investigated for the contact fatigue and the bending fatigue. Then, the reliability of the proposed model was proved by comparing the calculation result with the simulation result. Further study was performed to analyze the variation of the contact fatigue stress and the bending fatigue stress under different loads. Furthermore, the roles of the driving pinion and the driven Gear pair were evaluated in the fatigue life of the Straight Bevel Gear pair and the main fatigue failure mode was determined for the significant Gear. The results show that the fatigue failure of the driving pinion is the main fatigue failure for the Straight Bevel Gear pair and the bending fatigue failure is the main fatigue failure for the driving pinion.
S. Siva Sakthi Velan - One of the best experts on this subject based on the ideXlab platform.
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Windmill Power Generation Using Mult-Generator and Single Rotor (Horizontal and Vertical Blade)
Journal of Energy Technologies and Policy, 2020Co-Authors: S. Siva Sakthi Velan, G. Muthukumaran, S. BalasubramaniyanAbstract:Wind energy is the environmental pollution free, hazardless and one of the best renewable energy for generation of electric power. The main aim of the paper is “to produce current using multi generator and single rotor”. This paper proposes multi-generator to address potential challenges: dimension, cost and reliability. The two electromagnetic induction generators are desired to share the single shaft through Straight Bevel Gears. These poles of the two generators will be changed as alternate to parallel. This paper discussed about the design procedure of Gears, Gear life and wind turbine rotors. The output current is stored in series of battery to appliances through converter and step up transformer. The Construction, working, parts of windmill, materials are discussed detailed in this paper. Keywords: Electromagnetic Induction Generator, Wind Turbine, Straight Bevel Gear, Poles of Generator.
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Design of Windmill Power Generation Using Multi-Generator and Single Rotor (Horizontal Blade)
Innovative Systems Design and Engineering, 2020Co-Authors: S. Siva Sakthi VelanAbstract:Wind energy is the environmental free and one of the best renewable energy for generation of electric power. The main aim of the paper is “to produce current using multi generator and single rotor”. This paper proposes multi-generator to address potential challenges: dimension, cost and reliability. The two permanent magnet D.C. generators are desired to share the single shaft through Straight Bevel Gears. These poles of the two generators will be changed as alternate to parallel. This paper discussed about the design procedure of Gears, Gear life and wind turbine rotors. The output current is stored in series of battery to appliances through converter and step up transformer. The performances and practicalities of the proposed architecture are verified in simulation using prototype wind turbine. Keywords: permanent magnet D.C. generator, wind turbine, Straight Bevel Gear, poles of generator.
Kazumasa Kawasaki - One of the best experts on this subject based on the ideXlab platform.
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Accuracy Measurement and Evaluation of Straight Bevel Gear Manufactured by End Mill Using CNC Milling Machine
Journal of Mechanical Design Transactions of the ASME, 2009Co-Authors: Kazumasa Kawasaki, Kazuyoshi ShinmaAbstract:Straight Bevel Gears are usually manufactured with various machines and systems, and the tooth profiles are produced by grinding or machining by means of a tool with many cutting edges. In recent years, the Straight Bevel Gear has been manufactured by an end mill using a computer numerical control (CNC) milling machine because the use of the auxiliary apparatus, special cutters, and special machine tools is not needed. Using this method, the Gear manufacturing with high accuracy is an important problem. In this paper, the coordinate measurement of the Straight Bevel Gear manufactured in this method is performed and the Gear accuracy is evaluated. The tooth profiles of the Straight Bevel Gear generated by a quasi-complementary crown Gear instead of a conventional complementary crown Gear are introduced. For this study, the tooth profiles of the Straight Bevel Gear were modeled using a 3D computer-aided design system and the Gear was manufactured by an end mill using a CNC milling machine based on a computeraided manufacturing process. Afterward, the coordinates of many points on the Gear tooth surfaces were measured at random using a coordinate measuring machine. This coordinate measurement provides the information about the factors related to the Gear accuracy such as pressure angle, tooth angle error, workpiece setting angle, apex to back, and so on. Therefore, the values of the above factors were estimated and were compared with the theoretical ones, respectively. Copyright © 2009 by ASME.
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design and manufacture of Straight Bevel Gear for precision forging die by direct milling
Machining Science and Technology, 2008Co-Authors: Kazumasa Kawasaki, Kazuyoshi ShinmaAbstract:In the manufacture of Straight Bevel Gears, a precision forging method has been mainly used in recent years and the precision forging die has been usually manufactured using electric discharge machining. However, it is difficult to content the high productivity and low manufacturing cost using electric discharge machining because the Gears are produced through a process of several steps. In this article, a design and manufacture of a Straight Bevel Gear for a precision forging die by direct milling is developed in order to improve the productivity and manufacturing cost for the Gear production. The tooth profile of a Straight Bevel Gear generated by a quasi-complementary crown Gear instead of a usual complementary crown Gear is introduced. For this study, first the numerical coordinates on the tooth surface of the Straight Bevel Gear were calculated and the tooth profiles were modeled using a 3D-CAD system. Afterward, the direct milling of the precision forging die of the Straight Bevel Gear in the harden...
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Accuracy of Straight Bevel Gear by end mill using CNC milling machine
2007 Proceedings of the ASME International Design Engineering Technical Conferences and Computers and Information in Engineering Conference DETC2007, 2008Co-Authors: Kazumasa Kawasaki, Kazuyoshi ShinmaAbstract:Straight Bevel Gears are usually manufactured with various machines and systems, and the tooth profiles are produced by grinding or machining by means of a tool with many cutting edges. In recent years, the Straight Bevel Gear has been manufactured by an end mill using a CNC milling machine because the use of the auxiliary apparatus, special cutters, and special machine tools are not needed. Using this method, the Gear manufacturing with high accuracy is important problem. In this paper, the coordinate measurement of the Straight Bevel Gear manufactured in this method is performed and the Gear accuracy is evaluated. The tooth profiles of a Straight Bevel Gear generated by a quasi-complementary crown Gear instead of a conventional complementary crown Gear is introduced. For this study, first the tooth profiles of the Straight Bevel Gear were modeled using a 3D-CAD system and the Gear was manufactured by an end mill using a CNC milling machine based on a CAM process. Afterward, the coordinates of many points on the Gear tooth surfaces were measured at random using a coordinate measuring machine. This coordinate measurement provides the information about the factors relation to the Gear accuracy such as pressure angle, tooth angle error, root cone angle, and apex to back and so on. Therefore, the values of the above factors were estimated and were compared with the theoretical ones, respectively. Copyright © 2007 by ASME.
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Three-Dimensional Measurement for Straight Bevel Gear
Nihon Kikai Gakkai Ronbunshu C Hen Transactions of the Japan Society of Mechanical Engineers Part C, 1998Co-Authors: Kazuo Ichino, Kazumasa Kawasaki, H. TamuraAbstract:A method for inspecting the machine settings for Straight Bevel Gear cutting is proposed. The Bevel Gear is generated by a newly introduced “quasi-complementary crown Gear” instead of a conventional complementary crown Gear. A tooth bearing of a pair of generated Gears is theoretically desirable. The coordinates of many points on a tooth surface are measured at random using a coordinate measuring machine. The measured data should be including various type of information derived from the machine settings. Taking this fact into consideration, each information on the machine settings is extracted from the data using the method of least squares. The extracted items can be corrected, and they are : tool pressure angle, tooth angle, root cone angle, apex to back and tooth thickness. Using the proposed method, it is possible to produce interchangeable Bevel Gears. © 1998, The Japan Society of Mechanical Engineers. All rights reserved.
Liu Zhao-hui - One of the best experts on this subject based on the ideXlab platform.
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Straight Bevel Gear cold rotary forging technology and its CAPP system development
International Conference on Advanced Technology of Design and Manufacture (ATDM 2010), 2010Co-Authors: Li He-ping, Liu Zhao-huiAbstract:Straight Bevel Gear is common part in mechanical equipments, and it can directly obtain high precision tooth by use of cold precision rotary forging technology. The rotary forging parts have reasonable distribution of metal fiber and its material is strengthened during the process, which not only greatly improve the Gear fatigue strength, comprehensive mechanical properties, high dimensional accuracy and surface roughness, but also avoid forging various defects caused by heating. The technology saves energy, materials, reduces processing time, and it can overcome the too large deformation resistance of traditional cold forging and low dies life shortcomings. In this paper, the relationship between rotary forging force and its process parameters, failure modes, material selection, heat treatment and other influencing factors of dies life are researched and the solutions are provided. The CAPP system for forging parts' parametric design and automatic process cards output is introduced in this paper, developed by SolidWorks2004 as platform and VB6.0 as development language, which greatly reduces labor intensity of technology designers, ensures process standardization, but also the CAD/CAPP integration can be realized through further development.
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Failure of Rotary Forging Die and Its Finite Element Simulation
2010 Third International Symposium on Information Processing, 2010Co-Authors: Li He-ping, Liu Zhao-huiAbstract:The work principles, failure modes, material selection, heat treatment process of rotary forging dies are researched in this paper. When working, the dies not only bears great pressure and long time high temperature, but also bears alternating stress caused by repeated heating and cooling which can easily lead to heat fatigue crack. Selecting proper die material and using appropriate heat treatment can improve the strength and toughness, and improve its dies life. Straight Bevel Gear is common part in mechanical equipments, and high precision tooth can be directly obtained by rotary forging technology. The rotary forging parts have reasonable distribution of metal fiber and its material is strengthened during the process, which not only greatly improve the Gear fatigue strength, comprehensive mechanical properties, high dimensional accuracy and surface roughness, but also avoid forging various defects caused by heating. The technology saves energy, materials, reduces processing time, and it can overcome the too large deformation resistance of traditional cold forging and low dies life shortcomings. By FEM (finite element analysis) on Straight Bevel Gear rotary forging process, the rotary forging process variation with both sides under stress, the impact of feed rate on the die failure mode and the main reason of tooth root fracture are revealed, which provide guidance for selection and optimization of process parameters in Bevel Gear rotary forging process.