Method of manufacturing chamfering wheel, chamfering wheel, and method of adjusting chamfering wheel before use

Abstract

A method of manufacturing a chamfering wheel includes: forming, to be concentric by coaxial processing: a reference surface serving as one of a pair of side surfaces of a disk; a fitting hole into which a rotary shaft part is fitted in the disk; a first surface of an annular centering groove, the first surface being provided on the reference surface and used to detect a runout corresponding to a runout of an outer peripheral surface of the chamfering wheel when the chamfering wheel rotates; and a second surface of the centering groove, the second surface being provided on the reference surface, adjacent to the first surface, and used to detect a runout of the reference surface when the chamfering wheel rotates; and forming a grinding wheel portion on an outer peripheral surface of the disk.

What is claimed is: 
     
         1 . A method of manufacturing a chamfering wheel comprising:
 performing coaxial processing on:
 a reference surface serving as one of a pair of side surfaces of a disk; 
 a fitting hole into which a rotary shaft part is fitted in the disk; 
 a first surface of an annular centering groove, the first surface being provided on the reference surface and used when detecting a runout corresponding to a runout of an outer peripheral surface of the chamfering wheel when the chamfering wheel rotates to adjust a position of the disk; and 
 a second surface of the centering groove, the second surface being provided on the reference surface, adjacent to the first surface, and used when detecting a runout of the reference surface when the chamfering wheel rotates to adjust the position of the disk, 
   while maintaining a state of holding the disk with a machine tool to form the centering groove to be concentric with respect to a center axis of the fitting hole to secure accuracies of the first surface and the second surface; and   forming an annular grinding wheel portion on an outer peripheral surface of the disk.   
     
     
         2 . The method according to  claim 1 , wherein
 the forming the first surface comprises forming the first surface so as to be orthogonal to the reference surface formed as a flat surface, and   the forming the second surface comprises the second surface so as to be parallel to the reference surface.   
     
     
         3 . A chamfering wheel, comprising:
 a disk in which a reference surface is formed on one of a pair of side surfaces;   a fitting hole having an inner peripheral surface orthogonal to the reference surface, and into which a rotary shaft part is fitted in the disk;   an annular recessed centering groove provided in the reference surface, and formed concentrically with a center axis of the fitting hole; and   an annular grinding wheel portion provided on an outer peripheral surface of the disk,   the centering groove including:   a first surface orthogonal to the reference surface, used when detecting a runout corresponding to the outer peripheral surface of the disk or the outer peripheral surface of the grinding wheel portion when the chamfering wheel rotates in accordance with rotation of the rotary shaft part to adjust a position of the disk, and securing an accuracy; and   a second surface adjacent to the first surface, parallel to the reference surface, used when detecting a runout of the reference surface when the chamfering wheel rotates in accordance with rotation of the rotary shaft part to adjust the position of the disk, and securing an accurary.   
     
     
         4 . A method of adjusting a chamfering wheel before use comprising:
 fitting a predetermined rotary shaft part into the fitting hole of the chamfering wheel according to claim  3 ;   detecting a runout of the first surface with respect to the rotary shaft part detected by a distance detection sensor, by rotating the rotary shaft part to rotate the chamfering wheel together with the rotary shaft part, and moving the distance detection sensor relative to the first surface of the centering groove in a circumferential direction;   detecting a runout of the second surface with respect to the rotary shaft part detected by the distance detection sensor or another distance detection sensor, by rotating the rotary shaft part to rotate the chamfering wheel together with the rotary shaft part, and moving the distance detection sensor or the another distance detection sensor relative to the second surface of the centering groove in the circumferential direction;   adjusting an attachment state of the rotary shaft part and the chamfering wheel based on a detection result of the runout of the first surface detected by the distance detection sensor and a detection result of the runout of the second surface detected by the distance detection sensor or the another distance detection sensor.