| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for machining a groove capable of changing a machining order of the internal surface of a cylinder by minimizing machining burrs that occur in machining a right hand helical spiral groove in the internal surface of the cylinder of a workpiece by an end mill, and assuring adequate circularity, cylindricity, and dimensional accuracy of the internal surface of the cylinder of the workpiece. SOLUTION: A left-hand cut end mill 202 is used. The workpiece 201 is machined by left-hand rotation of the left-hand cut end mill 202, thereby minimizing the occurrence of machining burrs 203. Thus, the machining of the groove is enabled in the post-process of the finish machining of the internal surface. COPYRIGHT: (C)2005,JPO&NCIPI
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