“机械工人”(冷加工)1957年2期11页介绍了沈阳第一机床厂于伯铮同志报导的“应用无沟断屑车刀的经验”。我们照原文所介绍的几何形状做了几把刀具,并进行多次试验。试验表明,切削深度只能在3公厘以下、走刀量在0.4公厘/转以上才能断屑;如果超过这个范围,长铁屑就会很快地流出,非常危险。后来我们对这种车刀作了如下改进:把宽为2～4公厘、3～7°的小前角改成宽为0.2～0.5公 “Machinist” (Cold Working) 1957, No 2, p 11 The experience of applying a groove-free chip breaking tool reported by Yu Bozheng from Shenyang First Machine Tool Plant was introduced. We made several knives according to the geometry described in the original text and conducted many tests. Tests show that the depth of cut can only be less than 3 mm, take the knife at 0.4 mm / rev to break the chip; if it exceeds this range, the long iron will flow quickly, very dangerous. Later, we made the following improvements on this turning tool: Change the width of the small anterior horn 2 ~ 4 mm, 3 ~ 7 ° to 0.2 ~ 0.5