Patent ID: 6783449
Filing Date: 2004-08-31
Classification: B24B,B24D,Y10T

Abstract:
A grinding tool inserted to a hole provided in a subject to be worked while rotating so as to grind the inner surface of the hole, comprising:a tool main body including an outer surface along an axial direction, a slitted portion including slits in the axial direction at a predetermined interval in a circumferential direction, abrasive grains adhered to the outer surface of the slitted portion to form a grinding portion, and an expanding member press-fitted within the grinding portion to expand the grinding portion, thereby adjusting the outer diameter of the grinding portion, wherein at least a portion of the tool main body is formed in a cylindrical shape; and a working member including a front portion, a rear portion, and a working portion provided in the front portion of the working member to perform working processes before or after grinding of the inner surface in the subject to be worked, and wherein the rear portion is capable of being combined with the tool main body to be able to be attached thereto and removed therefrom; wherein a female screw portion is formed in an inner surface of the front end portion of the tool main body, and the working member includes a male screw portion that is capable of being screwed into the female screw portion.