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过去车偏心工件所用的夹具有以下几种:三爪卡盘、四爪卡盘、双重卡盘、花盘、专用夹具、偏心套、偏心轴等。在生产过程中,经常会遇到一些典型零件的加工(如图1所示),若在普通车床上加工,通常采用四爪卡盘和三爪卡盘上加垫片的方法。实践证明,这种方法质量差、效率低,又难以使两偏心体(偏心轴、偏心孔)的轴线平行。为此,我们经多次实践,制作了一种新夹具。采用此种夹具不仅能保证精度要求较高的中心距,而且
In the past, there were the following types of clips used for eccentric workpiece: three-jaw chuck, four-jaw chuck, double chuck, faceplate, special fixtures, eccentric sleeve, eccentric shaft and so on. In the production process, often encounter some typical parts of the processing (shown in Figure 1), if the ordinary lathe processing, usually with four-jaw chuck and three-jaw chuck plus pad method. Practice has proved that this method of poor quality, low efficiency, but also difficult to make the two eccentric body (eccentric shaft, eccentric hole) axis parallel. For this reason, we made a new fixture after many times of practice. The use of such a fixture can not only ensure the accuracy of the higher center distance, but also