１概述 以液压为动力的机床夹具已有很久的历史了。但由于液压技术本身的一些局限（如加工精度要求高。易泄漏等），过去机床夹具大多采用气动夹紧，只有在重负荷切削中或某些机床本身带有液压系统的组合机床上，才采用液压夹具。由于空气是可压缩的，工作压力低，因此气动夹具 1 Overview Hydraulically powered machine tools have a long history. However, due to some limitations of the hydraulic technology itself (such as high precision machining requirements, easy to leak, etc.), in the past mostly pneumatic clamping machine fixture, only in heavy cutting or some of the machine itself with a hydraulic system on the combination of machine tools Using hydraulic fixtures. As the air is compressible, low working pressure, so the pneumatic fixture