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一种新的内齿轮镶齿拉刀可一次串联加工K个齿轮。拉刀利用n个孔的承接器作为引导。下面以齿数Z=70、模数m=5、齿宽B=65(此例n=5;一次走刀拉5齿;K=3)的内齿轮为例,分析拉刀结构和计算程序。拉刀工作行程回到原位后,齿坯和承接器一起转过360°/n,进行下一次工作行程(此时拉刀以承接器的下一孔作引导)。这样进行7次走刀。然后承接器相对齿坯手动转过360°/n,固定后重复拉削(通过承接器的7个孔)。整个循环有14次走刀。经验表明,此拉削法的生产率比插齿刀加工同一齿轮的生产率高16倍。
A new internal gear broach can be processed in series K gear. Broach using n holes of the receiver as a guide. The following gear with Z = 70, modulus m = 5, tooth width B = 65 (in this case n = 5; a walking knife to pull the teeth; K = 3) for example, to analyze broach structure and calculation procedures. After the broach working stroke is returned to its original position, the tooth blanks and the receiver are rotated through 360 ° / n for the next working stroke (the broach is guided by the next hole of the adapter). This way 7 times. The holder is then manually rotated 360 ° / n relative to the block, and the block is repeatedly broached (7 holes through the adapter). There are 14 passes throughout the cycle. Experience has shown that this broaching productivity is 16 times greater than the productivity of a gear hobbing the same gear.