我厂在车加工薄壁浅筒冲制件(图1)虚线部分时,工件还要去毛刺、倒圆角,并要求平行度不低于0.05mm。过去我们采用带有大螺母的压紧胎具,十分笨重,且很难保证精度。为此,我们制作了专用夹具(图2),结构简单,并保证了精度要求,提高了效率一倍左右。使用时间卡盘扳手转动卡爪2,使其向中心移动压边圈3,把工件4压 I plant in the processing of thin-walled shallow tube red parts (Figure 1) dotted line part, the workpiece also go glitch, round, and the parallelism of not less than 0.05mm. In the past we used compression with a large nut tire, very heavy, and it is difficult to ensure accuracy. To this end, we have made a special fixture (Figure 2), the structure is simple, and to ensure the accuracy requirements, improve the efficiency of about double. Use the time spanner chuck to move the jaws 2 to move the blank holder 3 toward the center and press the workpiece 4