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在机械加工中,装夹是一个关键问题,因为它直接关系到工件加工的质量和速度,通常采用最多的是平口钳。但是,平口钳只能做单方向平行夹紧,而另一方向的夹紧却无法进行,只能靠前面加挡块,后面用手推工件与挡块贴死,但是否能贴死,只能凭感觉了,这就给工件装夹造成了很大的人为误差,远远不能满足高精度工件的加工要求,尤其是对于同一件多数量加工时,更不能保证重复定位的精度,而且速度也受到极大影响(图1)。
Clamping is a critical issue in machining, as it is directly related to the quality and speed of the machining of the workpiece, with the most commonly used flat-nose pliers. However, the flat-nose pliers can only do one-way parallel clamping, but the other direction of the clamping can not be carried out, only by the front stopper, the back of the workpiece and the stopper by hand, but can die, only dead Can feel, and this gives the workpiece clamping caused a lot of human error, far from being able to meet the processing requirements of high-precision parts, especially for the same number of processing, but also can not guarantee the accuracy of repeat positioning, and the speed Have also been greatly affected (Figure 1).