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图1所示的小棱镜,在加工过程中通常是成条进行的,用12～13块胶成一条,然后进行粗磨、精磨、抛光、改角等工序,加工完毕后再拆胶。当零件达不到技术要求,需要退修再加工就比较困难,其原因是零件太小,不易单件改角度,而且在胶盘或抛光时,由于加工面过小,容易走动,使角度变化很大。针对上述问题,我们采用了如下的办法来进行小棱镜的退修件加工。
Figure 1 shows the small prism, usually in the process of forming a strip, with 12 to 13 into a plastic, and then coarse grinding, grinding, polishing, corner and other processes, and then after the demolition of plastic processing. When the parts do not meet the technical requirements, the need to retreat and then processing more difficult, because the parts are too small, not easy to change a single point, but also in the plastic disk or polished, due to the processing surface is too small, easy to move, the angle change Great. In response to the above problems, we have adopted the following approach to the small prism of the retreat piece processing.