GRINDING METHOD AND GRINDING DEVICE OF MINUTE STEPPED SHAFT

摘要

PURPOSE: To prevent the mixing of a chuck error by rotating the base shaft of a minute stepped shaft by a friction transmission while supporting it with a regulating grinding wheel form member and a blade, so as to grind with a grinding wheel, and moving the minute stepped shaft being ground to the grinding wheel side at a specific speed, as well as contacting a buckup shoe to the minute shaft part of the minute stepped shaft. ;CONSTITUTION: The large diameter part of a minute stepped shaft 8 is supported by a blade 1 similar to the blade of a centerless grinder, and a regulating grinding wheel form member 9, and it is rotated by a friction transmission. And both members 1 and 9 are approached to a grinding wheel 4 at the relative speed V while maintaining the blade 1 and the regulating grinding wheel form member 9 as it is, and the minute shaft part of the minute stepped shaft 8 is ground by the grinding wheel 4. At the same time, a backup lever 16 is fed to the side of the grinding wheel 4, and abutted to a minute regulating stopper 18. As a result, the backup lever 16 is rotated in the direction r4, a backup shoe 16a is moved in the direction a at the speed 2V, and it is pressed to the minute shaft part of the minute stepped shaft 8, so as to back up the minute stepped shaft 8.;COPYRIGHT: (C)1995,JPO