Chamfering tool and rotary tool

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.