DRESSING DEVICE AND GEAR GRINDING DEVICE

摘要

This dressing device has: a gear grinding tool spindle (7) that rotatably supports a screw-shaped grindstone (10); and a dressing tool (30) that dresses the screw-shaped grindstone (10). The dressing device dresses the screw-shaped grindstone (10) by driving the screw-shaped grindstone (10) to rotate, and causing the relative motion of the screw-shaped grindstone (10) and/or the dressing tool (30). The dressing device performs a dressing process on the screw-shaped grindstone (10) in a manner such that the pressure angle changes along the direction of the tooth line by means of moving the screw-shaped whetstone (10) and/or dressing tool (30) at a fixed speed and altering the speed of rotation of the screw-shaped grindstone (10), or rotating the screw-shaped grindstone (10) at a fixed speed and altering the speed of motion in the axial direction of the screw-shaped grindstone (10) and/or the dressing tool (30).

主权项

1. A dressing device characterized in that
the dressing device comprises:
a gear grinding tool spindle by which a threaded grinding wheel used for machining of a gear is rotatably supported; anda dressing tool which is rotatably supported parallel to the gear grinding tool spindle and which dresses the threaded grinding wheel, the dressing device being configured to dress the threaded grinding wheel by: rotationally driving the threaded grinding wheel; bringing the threaded grinding wheel and the dressing tool into contact with each other; and moving at least one of the threaded grinding wheel and the dressing tool relative to each other in an axial direction of the threaded grinding wheel and the dressing tool, wherein a dressing process is performed on the threaded grinding wheel such that a pressure angle varies in a tooth trace direction, the dressing process performed by: changing a rotating speed of the threaded grinding wheel while moving at least one of the threaded grinding wheel and the dressing tool in the axial direction at a constant speed; or changing a moving speed of at least one of the threaded grinding wheel and the dressing tool in the axial direction while rotating the threaded grinding wheel at a constant speed.