近年来,随着机械制造业的发展,对某些工件的制造精度,如同心度、垂直度、位置精度和加工面的几何形状精度等等,都提出了更高的要求,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、心轴和胀胎等)已不能满足要求,液性塑料夹具就是在加工精度日益提高的新 In recent years, with the development of the machinery manufacturing industry, higher requirements have been put forward on manufacturing precision of certain workpieces, such as concentricity, verticality, position accuracy, and precision of the geometry of the machined surface, etc., Mechanical clamping and centering methods such as screws, eccentric wheels, wedges, platen, jaws, spindles and inflation tires have failed to meet the requirements. Liquid plastic fixtures are new in the machining accuracy.