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在机械加工中减少开车停车和装夹工件的辅助时间对于提高生产效率起着很大的作用,尤其是工件简单,加工时间较短,则减少辅助时间就具有更重大的意义。用顶针顶起来加工小轴之类的工件一般要用鷄心夹头夹牢,这样既花费装卸夹头的时间和机床开车停车的时间,而且还有一个更大的缺点就是夹头夹到的地方不能车削。因此轴的外圆全部长度不能一道车出,须要两个工序调头车削,很费人工。为了克服上述的缺点,我们在生产中采用了一种不用鷄心夹头的不停军顶活法(如附图a所示)。就是把工件顶在车头顶针和尾架活顶
In the machining to reduce the car parking and clamping work-piece auxiliary time for improving production efficiency play a significant role, especially the workpiece is simple, processing time is shorter, then reduce the auxiliary time has more significance. Thimble top processing of small parts such as the workpiece is generally used to clamp the heart of the chicken heart, which takes both loading and unloading chuck time and machine parking time, but there is a greater disadvantage is the clip to the folder Can not be turned. Therefore, the entire length of the shaft can not be a car out of the car, you need two procedures turning, it is labor-intensive. In order to overcome the above shortcomings, we used a non-stop military toping method in production, as shown in Figure a. Is the top of the workpiece in the front thimble and tailstock live top