| 简介 |
PROBLEM TO BE SOLVED : To improve processing accuracy and productivity by enabling contour processing or the like of a rare earth metal magnet sintered material in a short time by implementing cutting processing using a milling cutter cutting tool such as an end mill, fullback, formed cutter in processing the rare earth metal magnet sintered material. SOLUTION : The magnet crude material 1 of an arcuate shape or the like that is the rear earth metal magnet sintered material is cut by the rotation of the end mill 5 for its contour processing. The end mill 5 is one, for example, having a plurality of cutting blades 7a to 7d having a host material surface which is covered with a highly hard material or to which highly hard particles are fixedly attached. |
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