| 摘要 |
PURPOSE:To simultaneously form coarse and fine grinding block finished surfaces having no difference in level on a V-ribbed surface in the process of forming the V-rib group of a belt by a grinding means by a ring V-shaped grinding wheel to a compressed rubber layer forming a belt molding cylindrical body. CONSTITUTION:In a ring V-shaped grinding wheel 16 for forming a grinder wheel 13, ring shallow grooves 17 are formed on both side surfaces of a ring V-shaped core body 15, and a rough block area 20 and a fine block area 21 are evenly formed by embedding an abrasive material 18 having a large grain size in the shallow grooves 17 and sticking an abrasive material 19 having a small grain size onto the other part of the core body 15, respectively. A compressed rubber layer of 8 belt molding cylindrical body is ground with this V-shaped grinding wheel 16, whereby coarse and fine block finished surfaces formed on the V-rib surface of a V-ribbed belt can be simultaneously evenly formed. |
