图示夹具是用来加工柴油机中的摇臂两端面的,它具有结构简单、操作方便的特点。原来使用外张式弹簧夹头心轴,由于央具本身的加工精度和热处理淬火等原因,致使工件两端面的平行度和对孔的垂直度不 Graphic fixture is used to process both ends of rocker arm in diesel engine. It has the features of simple structure and convenient operation. The original use of outside the spring clip chuck mandrel, as the central processing with its own precision and heat treatment quenching and other reasons, resulting in workpiece parallelism of the two ends of the hole and the verticality is not