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近来,作为硬齿面精加工工艺的一种补充,齿轮刮磨工艺的应用日渐增多。在去除率相同的条件下,它较刮齿(又称剃齿——摘译者)或磨齿更为经济。 1.刮齿与刮磨齿工艺的比较根据作用副(括齿刀与工件齿轮)进给及切入运动的方式,刮齿可分为图1所示的(a)平行刮;(b)斜角刮;(c)横向刮;(d)切入刮四种。刮磨齿的运动方式和啮合关系与平行刮或切入刮相仿,其区别在于切削过程的不同。加工淬硬齿轮,由于刮齿刀的全部刃口沿接触线弹塑性地压入齿面,形成很高的压力,解决办法是减小工件与刮齿刀瞬时的接触面积,方法是使用刃口几何形状不定的刀具材料,按磨削规律局部地切下小的切屑。图2为普通刮齿方法所形成的切屑,其总长度约为3mm,切屑片较少,纵向及横向变形也很少。图
Recently, as a complement to the hardened tooth finishing process, the application of the gear shaving process is increasing. It is more economical than scraping (also known as shaving) or grinding at the same removal rate. 1. Scratch and Scratch-tooth Process Comparison According to the role of deputy (gear cutter and workpiece gear) feed and cut into the movement, scraping can be divided into the parallel shown in Figure 1 (a) scratch; (b) Angle scraping; (c) Horizontal scraping; (d) Cutting into scraping four. Scratch tooth movement and meshing relationship with the parallel scraping or cutting into the scraping similar, the difference is that the cutting process is different. Processing hardened gear, the entire blade edge of the tooth scraper along the contact line elastically pressed into the tooth surface, the formation of high pressure, the solution is to reduce the instantaneous contact area of the workpiece and the scraper, the method is to use the edge Geometrical tool material, according to the law of grinding locally cut small chips. Figure 2 for the general method of scraping scraps formed by the chip, the total length of about 3mm, chip less, vertical and horizontal deformation is also very small. Figure