Patent ID: 8979610
Filing Date: 2015-03-17
Classification: B23F,B24B,G05B

Abstract:
1. A method for dressing a threaded grinding wheel for internal gear grinding characterized in that a barrel-shaped threaded grinding wheel and an externally-toothed dressing gear are rotated in synchronization with each other and moved relative to each other in an arc within a plane in a state where the threaded grinding wheel and the dressing gear are in mesh with each other, so as to cause the dressing gear to dress the threaded grinding wheel over an entire area thereof in a direction of an axis of the grinding wheel, the threaded grinding wheel being disposed at a crossed axes angle to an internal work gear which is given to the threaded grinding wheel during grinding of the internal work gear, the dressing gear being capable of meshing with a virtual external gear which is virtually designed to mesh with the internal work gear in place of the threaded grinding wheel disposed at the crossed axes angle, the virtual external gear is virtually created as an external gear in which all tooth parts are exactly the same as shapes of all tooth spaces of the internal work gear, and the dressing gear is moved in mesh with the virtual external gear when the dressing gear is moved in the arc within the plane.