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一、通常液性塑料芯轴存在的问题液性塑料芯轴作为一种高精度的定心夹紧机构,被广泛地运用于套类零件的精加工。但由于其夹紧行程小,通用性差,且在用于薄壁套类零件加工时,由于工件位于芯轴夹紧带与非夹紧带部位的夹紧刚性和直径涨出量的不等,易使工件加工后形成的表面素线不直。这些都在一定的程度上限制了它的使用范围。二、加弹性衬套后芯轴的结构及优点为了解决通常液性塑料芯轴存在的上述这些问题,我们设计了加弹性衬套的液性塑料芯轴,结构如图1所示。如图,当拧动夹紧螺钉时,柱塞前移,芯轴型腔内压力增高,芯轴薄壁涨套薄壁部分外涨,这
First, the general problems of liquid plastic mandrel Liquid plastic mandrel as a high-precision centering clamping mechanism, is widely used in sets of parts finishing. However, due to its small clamping stroke, poor versatility, and when used in the processing of thin-walled sleeve parts, due to the workpiece clamping mandrel and non-clamping band parts of the clamping rigidity and diameter of the amount of rise, Easy to make the surface of the workpiece after processing is not a straight line. These are to some extent limit its scope of use. Second, the elastic bushing after the core structure and advantages In order to solve these problems usually liquid plastic mandrel, we designed a flexible bushing of liquid plastic mandrel, the structure shown in Figure 1. As shown in the figure, when tightening the clamping screw, the plunger moves forward and the pressure in the mandrel cavity increases.