Method of phasing threaded grinding stone, as well as gear grinding machine

Abstract

A method of phasing a threaded grinding stone and a gear grinding machine are disclosed, wherein phasing of the threaded grinding stone with respect to a gear to be machined or to a dresser can be performed at high speed. A threaded grinding stone is phased with respect to a workpiece or a disk dresser prior to engagement. The phase of the threaded grinding stone is adjusted so that a tooth tip of the workpiece or a blade tip of the disk dresser faces the central position of an edge groove of the grinding stone. Subsequently an edge surface of the threaded grinding stone contacts an edge surface of the workpiece or an edge surface of the disk dresser. The phase of the threaded grinding stone is adjusted so that the tooth tip of the workpiece or the blade tip of the disk dresser is disposed in this latter phase.

Description

TECHNICAL FIELD[0001]The present invention relates to a method of phasing a threaded grinding wheel, with a gear to be machined which is to be ground by use of the threaded grinding wheel, or with a dresser which is to dress the threaded grinding wheel, as well as relates to a gear grinding machine to which this method is applied.BACKGROUND ART[0002]Heretofore, gear grinding machines are provided to efficiently finish the tooth surfaces of a workpiece, which is a heat-treated gear to be machined, by grinding the workpiece with a threaded grinding wheel, which is a grinding tool. In such a gear grinding machine, the workpiece is ground in a state in which the threaded grinding wheel and the workpiece are being rotated in synchronization while meshing with each other. Accordingly, insufficient precision of meshing may cause uneven grinding on the tooth surfaces of the workpiece and may reduce the life of the threaded grinding wheel due to an excessive load thereon.[0003]For the above-...

AI Technical Summary

Benefits of technology

[0030]According to the method of phasing a threaded grinding wheel, as well as the gear grinding machine in the present invention, the phase of the threaded grinding wheel is adjusted so that the tooth tip of the gear to be machined or the blade edge of the dresser 32 faces the position of the thread groove of the threaded grinding wheel 14, the position being found on the basis of the projection-indentation amount. Subsequently, in this state, the intermediate phase is found by causing the thread surface of the threaded grinding wheel to contact the tooth surface of the gear to be machined or the blade surface of the dresser. Furthermore, the phase of the threaded grinding wheel is adjusted so that the tooth tip of the gear to be machined or the blade edge of the dresser is placed at this intermediate phase. As a result, time needed for the phase adjustment as a whole is reduced, and thus the phasing of the threaded grinding wheel with the gear to be machined or with the dresser can be performed at high speed.

Problems solved by technology

Accordingly, insufficient precision of meshing may cause uneven grinding on the tooth surfaces of the workpiece and may reduce the life of the threaded grinding wheel due to an excessive load thereon.

Images