在煤矿机械修配中,经常遇到各种盘状零件的钻、扩、铰工艺。过去是划线等分后再钻,精度和效率都受到影响。后来我们设计了一种盘类零件通用钻夹具(见图),有分度、定心、压紧、升降、自锁等机构,不仅省去了划线工序,而且精度和效率都大大提高。1.分度煤矿机械需钻孔的盘状零件最 In the coal machinery repair, often encounter a variety of disc-shaped parts of the drill, expansion, hinge process. In the past, the diamonds were divided equally, then the accuracy and efficiency were affected. Later, we designed a general-purpose drill chuck (see photo), which has the functions of indexing, centering, pressing, lifting and self-locking. It not only eliminates the marking process, but also greatly improves the precision and efficiency. 1. Indexed coal machinery need to drill the most disc-shaped parts