关键词: 齿形修形, 成形磨削, 砂轮截形, 计算机仿真

Abstract: To improve the gear modified accuracy of form grinding,a general algorithm model of involutes gear modification profile was proposed.A general mathematics model was established with the modification of profile on the normal direction.The gear teeth surface was turned into nonstandard involutes helicoids after the profile modification.Based on the principle of gear engagement,a general mathematics model of the form wheel section was deduced for the form grinding of modified gear.According to a numerical control form grinding machine,the simulation processing analysis was made by using dextral helical gear as an example.The result showed that the proposed algorithm was correct and feasible;the movement of gear machining was achieved by the linkage between each axes,and the error distribution of right teeth space was better than left which was due to the existence of dominate surface during the grinding process.The maximum error of modification profile was located in the transition region of root.

Key words: profile modification, form grinding, wheel section, computer simulation