| 摘要 |
PURPOSE:To secure the accuracy in machining and prolong the lifetime of an end mill, which is to machine a deep groove scroll lap, by cooling the end mill by forced lubrication with a coolant, and reducing wear of the cutter tip. CONSTITUTION:An end mill 10 is provided with a cutting edge for processing of a side face and bottom surface, and its tip is equipped with a minute chamfer or roundness of 0.1mm or less, and a coolant leading hole 10a is bored at the axis over the whole length, while a processing machine is provided with coolant supply holes 12a, 11a at the axis of the spindle system, and using them a lap 4 is machined while a coolant 13 is supplied from coolant supply holes 12a, 11a of the processing machine to the coolant leading hole 10a in the end mill 10.
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