在磨床上加工轴类外圆时,我厂过去使用鸡心卡头夹紧工件,操作比较麻烦,生产效率较低。为此,我的设计了一种自紧卡箍来代替鸡心卡头(附图)。减少了操作时间,使用方便。使用方法如下:在工件上机床前,首先要把卡箍装在工件上,握紧把手9,弹簧4被压下,使卡爪3转动,此时可插入工件10,松手即可夹紧工件。在加工过程中,砂轮转速比工件转速要高得多, When machining cylindrical shaft on the grinder, our factory used to clamp the workpiece with the jixin chuck in the past, the operation is troublesome, and the production efficiency is low. To this end, I designed a self-tightening clamp instead of Jixin chuck (photo). Reduce the operating time, easy to use. The use of the following methods: Before the workpiece on the machine, the first clamp to be mounted on the workpiece, grip handle 9, the spring 4 is depressed, so that the pawl 3 rotation, this time you can insert the workpiece 10, let go to clamp the workpiece . In the processing, the wheel speed is much higher than the workpiece speed,