Roll polishing rotary grinding stone, and roll polishing device and method

Abstract

Provided are a roll polishing rotary grinding stone and a roll polishing device and method which are configured to stably perform roll polishing without making the surface roughness of a surface to be processed non-uniform by preventing polishing debris to be generated during polishing from being accumulated in a recess at a center of a polishing surface of the roll polishing rotary grinding stone body. The roll polishing rotary grinding stone includes: a rotary grinding stone body having a rotary shaft mounted on a back end face and a polishing surface formed on a front end face; and a recess formed at a center of the front end face of the rotary grinding stone body, the roll polishing rotary grinding stone being configured to perform vertical polishing with respect to a surface of a roll by bringing the polishing surface into contact with the surface of the roll, in which the recess is formed into a tapered recess in which an inner peripheral surface of the recess is increased in diameter from the back end face of the rotary grinding stone body toward the front end face of the rotary grinding stone body.

1 . A roll polishing rotary grinding stone, comprising:
 a rotary grinding stone body having a rotary shaft mounted on a back end face and a polishing surface formed on a front end face; and   a tapered recess formed at a center of the front end face of the rotary grinding stone body, the tapered recess being defined by an inner peripheral surface of the rotary grinding stone body, the roll polishing rotary grinding stone body being configured to perform vertical polishing with respect to a surface of a roll by bringing the polishing surface into contact with the surface of the roll, wherein a diameter of the tapered recess increases from the back end face of the rotary grinding stone body toward the front end face of the rotary grinding stone body.   
     
     
         2 . A roll polishing rotary grinding stone according to  claim 1 , wherein the roll is a gravure plate-making roll. 
     
     
         3 . A roll polishing device, comprising:
 a roll polishing rotary grinding stone comprising:
 a rotary grinding stone body having a rotary shaft mounted on a back end face and a polishing surface formed on a front end face; and 
 a tapered recess formed at a center of the front end face of the rotary grinding stone body, the tapered recess being defined by an inner peripheral surface of the rotary grinding stone body, the roll polishing rotary grinding stone body being configured to perform vertical polishing with respect to a surface of a roll by bringing the polishing surface into contact with the surface of the roll, wherein a diameter of the tapered recess increases from the back end face of the rotary grinding stone body toward the front end face of the rotary grinding stone body. 
   
     
     
         4 . A roll polishing method, comprising:
 providing a roll polishing rotary grinding stone comprising a rotary grinding stone body and a tapered recess, the rotary grinding stone body having a rotary shaft mounted on a back end face and a polishing surface formed on a front end face, the tapered recess being formed at a center of the front end face of the rotary grinding stone body, the tapered recess being defined by an inner peripheral surface of the rotary grinding stone body, wherein a diameter of the tapered recess increases from the back end face of the rotary grinding stone body toward the front end face of the rotary grinding stone body;   performing vertical polishing with respect to a surface of a roll by bringing the polishing surface into contact with the surface of the roll.   
     
     
         5 . A roll polishing method according to  claim 4 , wherein the roll is a gravure plate-making roll. 
     
     
         6 . A roll polishing device according to  claim 3 , wherein the roll is a gravure plate-making roll.