Tooth surface distortion compensation method during worm wheel grinding of axial modified helical gear

Abstract

The invention relates to a tooth surface distortion compensation method during worm wheel grinding of an axial modified helical gear. The method solves the problem of tooth surface distortion when worm wheel grinding is conducted on a helical gear with axial modification, calculates the additional motion quantity of a grinding wheel during worm wheel dressing according to the warp quantum of a tooth surface on the basis of building a tooth surface warp quantum calculation model during worm wheel grinding of the axial modified helical gear, overlays additional motion on conventional worm wheeldressing motion to change a pressure angle of left and right tooth surfaces of the grinding wheel, and compensates tooth surface distortion by continuously changing the pressure angle in a width direction of the grinding wheel aiming at a continuous change trend of a profile pressure angle of a gear end section during tooth surface distortion, thereby improving the accuracy of worm wheel grindingof the axial modified helical gear.

Description

technical field [0001] The invention belongs to the technical field of gear manufacturing, and in particular relates to a method for compensating tooth surface distortion during grinding of a helical gear worm grinding wheel with tooth orientation modification. Background technique [0002] As the entire machinery industry has higher and higher requirements for gear performance and transmission accuracy, traditional gear design and machining accuracy can no longer meet the needs of the industry. In order to meet the requirements of high speed, heavy load, low noise and long life of modern mechanical transmission, it is necessary to modify the tooth shape of the gear under the premise of ensuring the machining accuracy of the gear. The existing processing method follows the processing principle of the helical tooth surface, and realizes the modification of the tooth profile of the gear by changing the machining trajectory of the tool. However, due to the inherent motion geom...

AI Technical Summary

Problems solved by technology

Although the gear grinding machine tools developed by foreign gear machine tool manufacturers such as Reishauer and Gleason have the function of tooth surface distortion compensation, the specific principle and implementation process cannot be known due to technical blockade.

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