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附图所示夹紧装置,可用于车床或磨床上。它由心杆1、夹套2(与心轴连成一体)、转盘3、拨杆4和挡板5等所组成。工作时,先将工件套在夹套2的外圆柱面上,直到抵贴端面为止。用螺钉6将转盘3及挡板5连为一体,在转盘3上有内螺纹与心轴上的外螺纹相配合。所以顺时针转动转盘3时,使拨杆4带动心轴1从左向右移动。由于心杆1与夹套2上内外锥度相配关系,使夹套2产生弹性变形而胀开,从而对工件实现定位、定心及夹紧。反之,逆时针方向转
The clamping device shown in the drawings can be used on lathes or grinding machines. The utility model is composed of a mandrel 1, a jacket 2 (integrated with a mandrel), a turntable 3, a lever 4, a baffle 5 and the like. Work, the first set of the workpiece in the outer cylindrical surface of the jacket 2, until the abutting end face up. With the screw 6 to the turntable 3 and the baffle 5 as a whole, the turntable on the inner thread 3 and the mandrel on the match. Therefore, when the turntable 3 is rotated clockwise, the lever 4 drives the spindle 1 to move from left to right. Due to the mandrel 1 and the inner and outer taper matching jacket 2, so that the jacket 2 is elastically deformed and expanded, so that the workpiece positioning, centering and clamping. Conversely, turn counterclockwise