| 摘要 |
PROBLEM TO BE SOLVED: To greatly reduce the working cost in mass production and simplifying the molding of a flat part on a projection part between micro grooves and a curved part continuing thereto in a superfinishing process by simplifying the formation of a tool used for micro grooving and elongating the service life of the tool. SOLUTION: When the micro groove D is formed in the outer circumferential face Wa of a workpiece W having a circular cross section which orthogonally crosses with a main spindle 9 in a rotating state, a grinding outer circumferential face 16a of a grooving grinding wheel 16 which has the disk-shaped grinding outer circumferential face 16a having a cross section recessed into an arc shape is made to abut on the outer circumferential face Wa of the workpiece W. The grooving grinding wheel 16 and the workpiece W are made to relatively move along the main spindle 9 to form the micro groove D in the outer circumferential face Wa of the workpiece W. Then, the projection part Wb between the mutually adjoining micro grooves D and D is removed by a superfinishing grinding wheel by a prescribed amount. COPYRIGHT: (C)2004,JPO&NCIPI
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