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在精磨夹具的设计过程中,经常会碰到一些精度要求高,形状特殊而且刚性差的零件。常用的液塑、滚针、蛇形管衬套结构的定心夹具,对这些特殊情况难以满足要求,因为这些结构虽然都可消除零件定位误差,但由于夹具装上机床后,夹持零件的表面不能修整,而达不到非常理想的精度。因此人们都在寻求夹具在机床上修整后,不用移动夹爪而利用固定膜片的弹性变形来定位夹紧零件,以消除夹具的安装误差和零件的定位误
In the design of the grinding fixture, often meet some high precision, special shape and poor rigidity of the parts. Commonly used liquid plastic, needle roller, snake tube bushings centering fixture, these special circumstances are difficult to meet the requirements, because these structures can eliminate parts positioning error, but because the fixture mounted on the machine, the clamping parts Surface can not be trimmed, but can not reach very good precision. Therefore, people are looking for fixtures in the machine after dressing, without moving the jaws and the use of fixed diaphragm elastic deformation to locate the clamping parts to eliminate the fixture installation error and positioning errors