图示是一种通用的活动定位心轴磨孔夹具。夹具体1装在磨床主轴孔里,安装工件时先松开螺钉8,定位轴3在弹簧2的作用下,使锥面的一端伸在夹具体外。工件以锥面定位,靠在夹具体端面上,压缩工件后把定位轴压入夹具体内,拧紧螺钉8后,即可磨孔。定位轴3外端做成锥面,可消除因工件磨量不均引起 The illustration is a general purpose positioning mandrel grinder. Clamp 1 installed in the grinder spindle hole, the first installation of the workpiece to loosen the screw 8, the positioning shaft 3 in the spring 2, so that one end of the cone extends outside the fixture. The work piece is positioned with a conical surface and leans on the end face of the clamp body. After the work piece is compressed, the positioning shaft is pressed into the clamp body, and the screw 8 is tightened to grind the hole. Positioning the outer end of the shaft 3 made of conical surface, to eliminate due to uneven workpiece grinding caused