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机床央具是保证机械零件制造精度、效率、成本的重要工艺装备，而夹紧装置则是保证工件的正确位置，使加工能正确地按要求进行，是突具的重要组成部分。常见的液压和气动突具动力装置，在经调整后有相对固定的压力，当切削力或其它为波动较大而需要夹紧力也随之增大时，上述两
The center of the machine tool is an important process equipment to ensure the precision, efficiency and cost of manufacturing machine parts. The clamping device ensures the correct position of the workpiece so that the processing can be carried out correctly according to the requirements. It is an important part of the tool set. Common hydraulic and pneumatic sudden with power device, after the adjustment has a relatively fixed pressure, when the cutting force or other large fluctuations in the need for clamping force also increases, the two