油缸式夹紧机构的原理及应用

Principle and Application of the Oil Cylinder Type Clamp Structure

针对铰链式的夹具夹紧机构在应用过程中存在:1)重量较大的工件加工(如发动机的缸体)在产品的加工过程中,工件在落下定位的过程中会和夹具压板发生干涉,导致加工工件无法正常进入夹具;2)形状不规则零件,往往由于空间的局限性,工件进出夹具时需要压板让开装卸工件的空间,才能实现工件的装卸。以上两点,限制了铰链式夹紧机构的应用。基于铰链式夹紧机构存在的问题,根据通用油缸活塞运动的原理设计了油缸式夹紧机构,夹紧压板在运动过程中走水平直线运动,很好地解决了工件在上下料的过程中与夹紧压板发生干涉或工件夹紧过程中夹紧压板与工件凸台或加强筋发生干涉的问题,实现了工件在上述特殊情况下的工件夹紧。

In respect to the application of the jig of the hinged clamp system, problems exist ： 1 ） during the produc tion, the weighty workpiece （for example the cylinder block） is not placed in the exact position of the clamp, because the clamp is interfered with the workpiece. 2）for irregular shape work pieces, due to space limitations, they need to clamp workpieces out of space when in and out of the jig, which can carry out the course of loading and unloading the workpie. es. The jig of the hinged clamp system cannot solve above problems. The article introduces the oil cylinder type jig struc ture whose principle is based on the piston of the oil cylinder. The clamp is moved along straight line, and lhe proHem that the clamp of the hinged clamp system is interfered with the workpiece＇ s bosses and strengthening ribs is sloved easily, the workpiece is clamped by this structure to mactdning.