我厂在生产中,经常遇到如图1所示的精镗刀板。以往在加工过程中,无法测量R37_(-0.045)~0mm。尺寸。不得不把刀体加长一部分,使其在磨削R37_(-0.045)~0mm尺寸时.磨到整圆来测量,最后把加长部分切掉。因我厂精镗刀板属厂标系列,R尺寸大小不一样,致使在加工过程中既费原材料,又费工 I plant in the production, often encountered as shown in Figure 1 Fine boring knife. In the past in the process, can not measure R37 _ (- 0.045) ~ 0mm. size. The cutter body has to be lengthened a bit so that when it is ground at R37 _ (-0.045) to 0 mm, it is sharpened to a full circle to measure and finally the lengthened portion is cut off. Because I plant fine boring plate is a factory standard series, R size is not the same size, resulting in the processing of both raw materials, but also labor