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这种夹具是用来加工偏心表面的。夹具壳体4的一头装在车床的主轴里,壳体的另一头装在与机床主轴成5毫米偏心距的套筒3里。偏心套上紧固着用于夹持被加工零件的自定心卡盘1。这样一来,卡盘的轴线就相对于套筒的旋转轴线偏移了5毫米。装有卡盘的套筒3相对于夹具壳体旋转起来之后,卡盘的轴线相对于机床主轴的偏心值可达10毫米。即使卡盘相对于套筒有很大的角位移,这对偏心值的影响也不是很大的。从而也就避免了夹具在调整中所产生的很大调整误差。可以用各种方法解
This fixture is used to machine eccentric surfaces. One end of the jig housing 4 is mounted in the spindle of the lathe and the other end of the jig is mounted in a sleeve 3 having an eccentricity of 5 mm from the spindle of the machine tool. Eccentric sleeve tighten the workpiece for clamping the self-centering chuck 1. As a result, the chuck axis is offset by 5 mm with respect to the axis of rotation of the sleeve. After the chuck-fitted sleeve 3 is rotated relative to the fixture housing, the eccentricity of the chuck axis relative to the machine spindle can be up to 10 mm. Even if the chuck has a large angular displacement relative to the sleeve, this has little effect on the eccentricity. Thus avoiding the fixture in the adjustment of the great adjustment error. You can use a variety of methods to solve