Method of dressing a grinding wheel

Abstract

Herein is disclosed a method of dressing a grinding wheel, the method comprising providing a dressing roller and a grinding wheel, wherein the dressing roller comprises a hub and a plurality of polycrystalline diamond (PCD) segments mounted peripherally about the hub, each PCD segment having a pair of side surfaces extending generally radially and an end surface extending generally circumferentially between the side surfaces, the method comprising the steps of: a. rotating the dressing roller and/or the grinding wheel, and b. engaging a periphery of the dressing roller and a periphery of the grinding wheel, wherein a speed ratio qd between the dressing roller and the grinding wheel is below 0 or above +1, and wherein a rake face is located on one of said side surfaces of each PCD segment and a corresponding flank face is located on the end surface.

1 . A method of dressing a grinding wheel, the method comprising providing a dressing roller and a grinding wheel, wherein the dressing roller comprises a hub and a plurality of polycrystalline diamond (PCD) segments mounted peripherally about the hub, each PCD segment having a pair of side surfaces extending generally radially and an end surface extending generally circumferentially between the side surfaces, the method comprising the steps of:
 a. rotating the dressing roller and/or the grinding wheel, and   b. engaging a periphery of the dressing roller and a periphery of the grinding wheel, wherein a speed ratio q d  between the dressing roller and the grinding wheel is below 0 or above +1, and wherein a rake face is located on one of said side surfaces of each PCD segment and a corresponding flank face is located on the end surface.   
     
     
         2 . The method as claimed in  claim 1 , wherein the dressing roller has an infeed rate (a r ) measured in μm/rev, and wherein the infeed rate per PCD segment is between one fortieth and one fifth. 
     
     
         3 . The method as claimed in  claim 2 , wherein the infeed rate per PCD segment is between one fortieth and one tenth. 
     
     
         4 . The method as claimed in  claim 1 , wherein an infeed rate (a r ) of the dressing roller is in the range of 0.001 to 0.010 mm/rev. 
     
     
         5 . The method as claimed in  claim 4 , wherein the infeed rate of the dressing roller is in the range of 0.001 to 0.006 mm/rev. 
     
     
         6 . The method as claimed in  claim 4 , wherein the infeed rate is in the range of 0.002 to 0.005 mm/rev. 
     
     
         7 . The method as claimed in  claim 1 , wherein a relative linear velocity (RLV) of the dressing roller is in the range of 10 to 30 m/s for q d <0. 
     
     
         8 . The method as claimed in  claim 1 , wherein a relative linear velocity (RLV) of the dressing roller is in the range of 2 to 10 m/s for q d >0.