To provide a grinding wheel for high speed rotation having an aluminum silicon alloy core member capable of preventing the corrosion due to the various coolants and deformation due to fitting and easy to be manufactured, and provide a manufacturing method therefor.
When manufacturing the grinding wheel 31 by adhering a grinding wheel layer 35 to the periphery of the disk-like core member 32 through an adhesive layer 34, The core member 32 is made of the aluminum alloy powder metallurgy alloy obtained by sintering the aluminum alloy powder and the silicon powder as a semimetal. A reinforcing ring 45 is integrally connected to the inside of a center fitting hole of the core member 32 with a fitting method using thermal shrinkage, and both side surfaces of the core member 32 and the reinforcing member 45 are worked at the same time, and nickel- phosphor (Ni-P) plating 70 and 71 are performed to the predetermined positions of both the side surfaces of the core member to adhere the grinding wheel layer 33 to the periphery of the disk-like core member 32 through the adhesive layer 34.
MUKAI RYOHEI
NISHI KOJI
Next Patent: ABRASIVE DISK AND MANUFACTURING METHOD THEREFOR