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Improved Relief Grinding Method of gear hob with Equal Relief Angle

Chinese Journal of Mechanical Engineering 2011年第5期24卷 842-850页

作者： LI Guolong SUN Menghui LI Xianguang LIU Fei HUANG Chao State Key Laboratory of Mechanical Transmission Chongqing University Chongqing 400030 China Chongqing Machine Tool （Group） Co. Ltd. Chongqing 400055 China

The regrinding error is the main factor affecting the eligible length of hob tooth,how to decrease the regrinding error is a hot issue in the research area of hob *** present,researches focus on changing the trajectory of relief moving,because of no unified relief grinding path planning method,the research result is restricted in the practical *** solving the problem,the calculation model of the hob relief angle is established with the Archimedes relieving motion to analyze the interaction between the increasing relief angle of the hob and the accelerating tooth profile *** on it,the improved relief grinding method of gear hob is proposed with equal relief angle（ERA）.Furthermore,the relief grinding method with ERA is developed with the following two ***,the convergence numerical solution algorithm of the tooth top curve is designed to form the wheel motion path which is compared with that of traditional *** second step is to establish the solution model of ERA grinding *** order to verify the effect of the method,hob grinding simulation system of 3D solid was built under the AutoCAD *** regrinding errors is analyzed by intercepting the hob axial profiles of the various regrinding angles with Boolean operations and further converting it to basic rack tooth,then the simulation example of zero rake straight flute hob is used to compare the regrinding errors between ERA grinding and traditional ***,the experiments were implemented on the five-axis CNC relief grinder with the relief motion of ERA grinding driven by *** results of experiments show that the method can effectively reduce the regrinding errors of hob and grind expediently gear hob of AA rank and *** research provide an effective model of relief moving path plan reducing regrinding error,and have practicable value in CNC relief grinder.

关键词： gear hob relief grinding grinding wheel regrinding error simulation

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STUDY ON WEAR AND DESTRUCTION OF hob IN gear hobBING

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Chinese Journal of Mechanical Engineering 2002年第4期15卷 376-379页

作者： Liu Dawei Research Centre of Vehicle and Traffic Engineering, Qingdao University, Qingdao 266071, ChinaChen Jing Lu Shaofang Jilin University Research Centre of Vehicle and Traffic Engineering Qingdao University Qingdao 266071 Jilin University

The wear and destruction appearances of hobs are researched. The reasons ofthe wear and destruction of hob are analyzed. And the influence of the change of the hobbing forceand the hobbing temperature on the wear and destruction of hob in gear hobbing is also analyzed. Ingear hobbing, the main wear mechanisms are adhesion and ploughing when cutting the 20CrMnTi gearusing W18Cr4V high-speed steel hob.

关键词： gear hob gear hobbing wear and destruction wear mechanism

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维普期刊数据库

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Modeling and experiment of grinding wheel axial profiles based on gear hobs

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Chinese Journal of Aeronautics 2021年第6期34卷 141-150页

作者： Shuying YANG Weifang CHEN College of Mechanical and Electrical Engineering Nanjing University of Aeronautics and AstronauticsNanjing 210016China

hobbing is one of the crucial gear manufacturing processes with high precision and high *** order to improve the accuracy of hobbing and hob relief grinding,more precise grinding wheels are demanded for relief grinding in the production of gear *** this paper,a new and accurate mathematical method for calculating the axial profile of grinding wheel based on the corresponding gear hob to be ground is *** that most researches have been conducted to focus on the optimization of hob geometric feature and only can be applied to a specific type of hand of helix and rake angle of gear *** method in this paper can be served as a general algorithm for generating axial profile of grinding wheels on the basis of the spatial envelope theory,the principle of coordinate system transformation,and studies on normal profile of *** accuracy of grinding hobs is based on applying the approach in practical *** two typical different kinds of pre-grinding gear hobs as examples for calculation and experiment,the results of tooth profile errors strengthen the position that the validity and feasibility of this method,it can be employed for gear hob design and grinding processing.

关键词： gear hob Grinding Grinding wheel Mathematical model Normal tooth profile Tooth profile error

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