论文部分内容阅读
使用立钻对轴类零件沿轴向进行孔加工时,对工件的定位方法很多,现介绍我厂使用的一种用凸轮夹紧的自动定心夹具。这种夹具能对一定直径尺寸范围内的轴类零件进行轴向孔加工,具有一定的通用性。由于采用压缩空气作动力,因而具有操作省力、速度快的优点。其结构如图所示。夹紧工件时,先由气缸活塞杆13前端的齿条带动与其相啮合的齿轴11,齿轴11带动齿轮3(齿轮3与套4系动配合),齿轮3带动另外二个齿轴,由键9固定齿轴上的三个凸轮块12各自绕齿轴11的
The use of vertical drilling on the shaft parts along the axial hole processing, the workpiece positioning methods are many, I introduced a factory using a cam-clamped automatic centering fixture. This fixture can be a certain diameter range of shaft parts within the axial hole machining, has a certain versatility. As a result of compressed air for power, which has the advantages of labor-saving operation, speed. Its structure as shown. When the workpiece is clamped, a toothed shaft 11 meshed therewith is driven by a toothed rack at the front end of the cylinder piston rod 13, a toothed shaft 11 drives a toothed gear 3 (a toothed wheel 3 is mated with a toothed sleeve 4), and the other three are driven by a toothed wheel 3, The three cam blocks 12 on the pinion are fixed by the key 9 around the pinion 11