近年来,随着机械制造业的发展,对某些产品零件的制造精度,如內外旋转面的同心度和端面对內外旋转面公共轴线的垂直度提出了更高的要求。而用普通的机械夹紧和中心定位方法(如螺钉、偏心轮、楔块、压板、卡爪和胀胎等)已不能满足所需要的精度。液性塑料夹具在加工精度要求日益提高的情况下,越来越显示出它的优越性。 In recent years, with the development of machinery manufacturing industry, the manufacturing precision of some product parts, such as the concentricity of inner and outer rotating surfaces and the perpendicularity of the end surfaces to the common axes of inner and outer rotating surfaces, are put forward higher requirements. With conventional mechanical clamping and centering methods (such as screws, eccentric, wedge, platen, jaws and inflation, etc.) can not meet the required accuracy. Liquid plastic fixture in processing accuracy requirements of the growing situation, more and more to show its superiority.