在实际工作中常会遇到机床工作范围不够的问题,如果在夹具设计上有巧法,就可解决。我厂要加工一批江岩汽车传动齿轮,根据加工工序,见图1,由于拉削尺寸l=139_0~(+0.26)mm,大于拉床L6120的花盘内孔半径D/2=100mm,按通常的夹具设计方法该拉床工作范围不够,若改用大拉床(如L6140),不仅夹具结构尺寸较大,且拉床利用率低。为了解决这 In practice, often encountered in the scope of machine tool work is not enough, if the fixture design is ingenuity, you can solve. I plant to process a number of Jiang Yan car transmission gear, according to the processing procedures, see Figure 1, due to the broaching size l = 139_0 ~ (+0.26) mm, larger than broaching L6120 disc inner diameter D / 2 = 100mm The usual fixture design method The broaching work area is not enough, if the switch to a large broaching machine (such as L6140), not only fixture structure size larger, and broaching machine utilization is low. In order to solve this