图1所示的是电车顶风窗垫片。加工其凸肩两侧面时,曾经借助于一个辅助垫片用虎钳夹持,用两道工步分别铣削其各面。结果工件被划伤,质量差,效率低。为此,设计、制造了如图2所示的夹具。 Figure 1 shows the tram roof gasket. When machining both sides of its shoulders, it was clamped by a vice with the aid of an auxiliary washer, each of which was milled in two steps. The results of the workpiece was scratched, poor quality, low efficiency. To this end, the design and manufacture of the fixture shown in Figure 2.