Grinding wheel truing method and grinding machine for carrying out truing method

Abstract

In a grinding wheel truing method of an aspect of the present invention, an outer peripheral surface of a grinding wheel is trued while a position of a truer with respect to the grinding wheel is moved from one end side toward the other end side in the axial direction of the grinding wheel. In the truing, a relative movement speed of the truer when a position of the outer peripheral surface of the grinding wheel which grinds a large-diameter portion of a conical surface of a work is trued is lower than a relative movement speed of the truer when a position of the outer peripheral surface of the grinding wheel which grinds a small-diameter portion of the conical surface of the work is trued.

1 . A grinding wheel truing method,
 in a grinding machine which comprises a grinding wheel having an axial length on an outer peripheral surface of the grinding wheel substantially equal to a length of a generating line of a conical surface of a work, and which grinds the conical surface of the work by bringing the outer peripheral surface into contact with the conical surface without relatively moving the grinding wheel in a direction of the generating line of the conical surface,   for truing the grinding wheel using a truer, the grinding wheel for grinding the conical surface of the work by bringing the outer peripheral surface of the grinding wheel of the grinding machine into contact with the conical surface while rotating the work having the conical surface about the work rotation axis with respect to the work rotation axis,   wherein,
 when the outer peripheral surface of the grinding wheel is trued while a position of the truer with respect to the grinding wheel is relatively moved along the outer peripheral surface of the grinding wheel from one end side toward the other end side in an axial direction of the grinding wheel on the outer peripheral surface of the grinding wheel, 
 a relative movement speed of the truer when a position of the outer peripheral surface of the grinding wheel which grinds a large-diameter portion of the conical surface of the work is trued is lower than a relative movement speed of the truer when a position of the outer peripheral surface of the grinding wheel which grinds a small-diameter portion of the conical surface of the work is trued. 
   
     
     
         2 . The grinding wheel truing method according to  claim 1 ,
 wherein the truer is relatively moved from the position of the outer peripheral surface of the grinding wheel which grinds the small-diameter portion of the conical surface of the work toward the position of the outer peripheral surface of the grinding wheel that grinds the large-diameter portion of the conical surface of the work, and the relative movement speed of the truer is gradually decreased, or   wherein the truer is relatively moved from the position of the outer peripheral surface of the grinding wheel which grinds the large-diameter portion of the conical surface of the work toward the position of the outer peripheral surface of the grinding wheel that grinds the small-diameter portion of the conical surface of the work and the relative movement speed of the truer is gradually increased.   
     
     
         3 . The grinding wheel truing method according to  claim 1 , wherein the grinding wheel is a cylindrical plane grinding wheel. 
     
     
         4 . A grinding machine comprising:
 a grinding wheel;   a truer that trues the grinding wheel; and   a control device,   wherein the grinding machine carries out the grinding wheel truing method according to  claim 1  based on an instruction of the control means device.