To provide a polishing device for attaining continuous polishing work to an upper edge and a lower edge in each tooth without requiring remounting work to an electric polishing tool.
This polishing device for a rotary blade 1 comprises a rotary blade holding part 4 and a polishing grindstone operating part 5 provided on a base 8. The rotary blade holding part 4 and the polishing grindstone operating part 5 are each provided with a relative movement mechanism to move the rotary blade 1 to/from the polishing grindstone operating part 5 and a rotating mechanism to horizontally rotate a polishing grindstone 18 to moving directions of the rotary blade 1. The polishing grindstone operating part 5 is composed of a tool moving member 11 to hold the polishing grindstone 18 in a prescribed attitude, and a center engagement part 21 and a rotation engagement part 22 provided on the tool moving member 11. The polishing grindstone operating part 5 is movable to horizontally rotate in accordance with a rotation center movable in a straight line direction by means of the center engagement part 21, and an oval arc track rotatable to continuously increase/decrease the radius of rotation by means of the rotation engagement part 22.
Toshio Mori
Shigeki Nakatsugu