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在铣削某产品零件的内螺纹时,我们采用了一种自动夹紧工件的卡盘。通过批生产考验,证明这种卡盘能降低操作工人的劳动强度,缩短加工过程的辅助时间。现将这种卡盘作如下介绍。一、结构原理图1表示自动夹紧卡盘的结构。在卡盘的支座6的前端装入夹紧体2。夹紧体2有三段沿圆周均匀分布的偏心圆弧型面。爪窝17上装有三个可沿径向滑动的卡爪16。为了不使工件被压伤或变形,卡爪与工件接触的一面作成光滑的圆弧表面。卡爪的背部各装有一滚轮14。爪窝的后端装有拨杆5。拨杆穿过
When milling the female threads of a product part, we used a chuck that automatically grips the part. Through the batch test, it proved that this chuck can reduce the labor intensity of workers and shorten the processing time. Now this chuck as follows. First, the structural principle Figure 1 shows the automatic clamping chuck structure. The clamp body 2 is attached to the front end of the holder 6 of the chuck. The clamping body 2 has three sections of eccentric arc profiles evenly distributed along the circumference. The jaws 17 are provided with three jaws 16 slidable in the radial direction. In order not to crush or deformation of the workpiece, the surface of the jaw in contact with the workpiece is made into a smooth arc surface. The back of the jaws each equipped with a roller 14. The rear end of the claw nest is equipped with a lever 5. Lever through