Method for producing polished-article

Abstract

A grinding apparatus 10 includes a controller 11 for controlling the entire apparatus, a grinding motor 14, a base metal 15 to be rotated by the grinding motor 14, and a grinding wheel 16 fixed to the base metal 15. In a grinding step, the grinding apparatus 10 is used and a surface 19 of an object to be polished 18 is ground with the grinding wheel 16 rotating at a peripheral speed of 10 m/s or less. In the grinding step, the surface 19 of the object to be polished 18 is preferably ground with the grinding wheel 16 rotating at a peripheral speed of 0.5 m/s or more. In the grinding step, a surface of alumina, sapphire, silicon carbide, or gallium nitride is ground as the object to be polished.

What is claimed is: 
     
         1 . A method for producing a polished-article that produces a polished article by polishing an object to be polished, the method for producing a polished-article comprising a grinding step of grinding a surface of the object to be polished with a grinding wheel rotating at a peripheral speed of 10 m/s or less. 
     
     
         2 . The method for producing a polished-article according to  claim 1 , wherein the surface of the object to be polished is ground with the grinding wheel rotating at a peripheral speed of 0.5 m/s or more in the grinding step. 
     
     
         3 . The method for producing a polished-article according to  claim 1 , wherein a surface of alumina, sapphire, silicon carbide, or gallium nitride is ground as the object to be polished in the grinding step. 
     
     
         4 . The method for producing a polished-article according to  claim 1 , further comprising a lapping step of polishing the object to be polished with abrasive grains after the grinding step.