Chamfering tool and rotary tool
A chamfering tool includes: a movable flange having a cylindrical shape so that one end portion of a joint member is inserted in the movable flange; a second spring member configured to energize the movable flange by one end portion of the second spring member; a spring receiver to which the other end portion of the second spring member abuts; a fixed flange fixed to the other end portion of the joint member; and a chamfering member fixed to the other end portion of the joint member, wherein the fixed flange and the movable flange have abutting surfaces formed by a flat surface, and an axial center of the chamfering member substantially coincides with an axial center of the shaft member when the abutting surfaces abut on each other.
1 . A chamfering tool, comprising:
a sleeve having a cylindrical shape, the sleeve being configured to receive a rotation power and rotate around a center axis;
a shaft member configured to rotate interlockingly with the sleeve, a first end portion of the shaft member being inserted in the sleeve, the shaft member being movable in an axial direction;
a first spring member inserted in the sleeve so as to apply a first force to the first end portion of the shaft member in an axial direction of the center axis;
a joint member composed of a universal joint, a first end portion of the joint member being connected with a second end portion of the shaft member so that the joint member rotates interlockingly with the shaft member;
a movable flange having a cylindrical shape, the first end portion of the joint member being inserted in the movable flange;
a second spring member, a first end portion of the second spring member being configured to apply a second force to the movable flange in the axial direction of the center axis;
a spring receiver, a second end portion of the second spring member being configured to abut on the spring receiver;
a fixed flange fixed to the second end portion of the joint member; and
a chamfering member fixed to the second end portion of the joint member, wherein
the fixed flange has a first abutting surface formed by a flat surface and the movable flange has a second abutting surface formed by a flat surface, and
when the first abutting surface and the second abutting surface abut on each other, an axial center of the chamfering member substantially coincides with an axial center of the shaft member.
2 . The chamfering tool according to claim 1 , wherein
the fixed flange is arranged so that a movable portion of the universal joint does not interfere with the movable flange.
3 . The chamfering tool according to claim 1 , wherein
when the first abutting surface and the second abutting surface abut on each other, a movable center point of the universal joint is included in a surface including the first abutting surface and the second abutting surface.
4 . The chamfering tool according to claim 1 , wherein
the second end portion of the shaft member and the first end portion of the joint member are screwed to each other.
5 . The chamfering tool according to claim 1 , wherein
the first spring member and the second spring member are composed of a compression coil spring, and
the second force applied to the second spring member is smaller than the first force applied to the first spring member.
6 . The chamfering tool according to claim 1 , wherein
the shaft member is axially supported by a ball spline bearing so that the shaft member is movable in the axial direction with respect to the sleeve.
7 . The chamfering tool according to claim 1 , wherein
the sleeve is configured to rotate while being connected with a rotating shaft of an air motor or an electric motor.