拉刀齿距为构成拉刀切削部分主要因素之一。齿距与下列因素有关:切削齿及校正齿的齿数,同时工作的齿数,拉刀总长,切削休积,单位制作的成本等。按拉刀的结构及其工作性质来说,槽截形为封闭的容屑空间,为了保证拉削顺利的进行,拉刀槽形容积必须具有足够的容屑空间。为此,槽形尺寸 Broach gear broach forming part of the cutting one of the main factors. Pitch and the following factors: the number of cutting teeth and teeth correction, the number of teeth at the same time work, the total length of the broach, cutting off the volume, the cost of making the unit. According to the structure of the broach and its working nature, the trough is a closed tundish space, in order to ensure the smooth progress of broaching, broach trough volume must have enough chip space. For this purpose, the groove size