前言首先要声明的,这是一篇综合性的即译稿,并未依照原文逐字逐句的直译;但遇到重要处所,则完全根据原文,未加减字句,井加上引述号。在金属切削中,如切削速度提高、进刀量加大,则刀具的寿命,按照一般常识是为之缩短的。可是美国人对于滚齿一再主张采用高速切削大量进刀,不特藉以减少工序时间,并且可以延长刀的寿命。道真是反常的论调,德国人对此力加驳斥;但各人都有充分资料以供佐证。苏联杂志上一篇“高速滚曲刀”的文章,并未正面地讲到高速滚齿与刀具磨触的问题,只不过反证高速钢滚刀在高速滚齿 The foreword should first of all be declared. This is a comprehensive translation, that is, it does not follow the literal translation of the original text verbatim; however, when meeting important premises, it is entirely based on the original, without adding or subtracting words and quoting quotations. In metal cutting, such as cutting speed increase, increase the amount of feed, the tool life, according to common sense is shortened. However, Americans repeatedly advocate the use of high-speed hobbing hobbing a large number of feed, not to reduce the process time, and can extend the life of the knife. It is an abnormal argument that the Germans refute this force, but each has sufficient information to support it. Soviet magazine article on a “high-speed hob knife” article, did not speak of high-speed gear hobbing and tool wear touch problem, but anti-high-speed steel hob hobbing at high speed