支架零件的加工在机械加工中属于畸形零件,当零件数量较少时,通常选用四爪单动卡盘安装加工.当零件数量较多时,为了提高加工效率,保证加工精度,通常需要使用专用夹具,这时零件的定位装夹即专用夹具的设计显得非常重要,专用夹具设计好与坏直接影响加工精度和企业的经济利益,所以在生产制造的过程中,夹具的设计和制作成为生产的一个必要部分。一、引言支架零件是一种比较复杂的零件,这类零件外形复杂,不规则,并且孔的轴线到支座底平面的有高度要求,当数量 Stent parts machining machining parts belonging to the deformity, when the number of parts is small, usually choose a four-claw single action chuck installation.When the number of parts is large, in order to improve the processing efficiency, to ensure the accuracy, usually require the use of special fixture , Then the fixture parts of the fixture positioning design is very important, the design of special fixture bad or bad directly affect the processing accuracy and the economic interests of enterprises, so in the manufacturing process, fixture design and production into a Necessary part. I. Introduction Stent parts is a more complex parts, such parts shape complex and irregular, and the axis of the hole to the bottom of the support plane has a high degree of demand, when the number