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在装于頂尖座之間或夹盘內的小型工件上划出所需加工的台肩或沟槽的位置,采用图27所示的划綫装置(装在車床尾座上)是有效的。滑板B装在尾座軸E上一个預先加工好的槽里,并用一个滾花螺釘F固定在所需位置上。在滑板的前
It is effective to draw the shoulder or groove to be machined on the small workpieces fitted between the top seats or the chuck using the scribing device shown in Figure 27 mounted on the lathe tailstock. The slide B is mounted in a pre-machined groove in the tailstock shaft E and is fixed in place with a knurled screw F. In front of the skateboard