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在铣床或刨床上,利用普通虎钳夹紧轴类工件,来加工键槽,往往要较多的找正时间。苏联某厂采用了一种自定中心的夹具,利用它来加工轴类工件上的键槽,可以节省找正时间,提高生产效率。这夹具的结构如附图。图中1是夹具体。2和3是轴,装在夹具体1上的轴孔内。在这两个轴上,装有压爪4和5。在压爪4和5上,分别用螺钉装上钳口6;这钳口经过淬硬。在压爪4和5的下端,各装有圆螺母7和8。9是丝杆,具有左
In the milling machine or planer, the use of ordinary vise clamp shaft workpiece, to process the keyway, tend to find more time. A factory in the Soviet Union adopted a self-centering jig, which can be used to process the keyways on the shaft workpieces, so as to save time and increase production efficiency. The structure of this fixture is shown in the attached figure. Figure 1 is a clamp body. 2 and 3 is the shaft, mounted on the body 1 on a shaft hole. On both axes, pressure dogs 4 and 5 are fitted. On the pressure jaws 4 and 5, screw the jaws 6 respectively; the jaws are hardened. At the lower ends of the pressure jaws 4 and 5, each of the round nuts 7 and 8.9 are screwed, with the left