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在大批生产曲轴时,该装置适于铣两端面打中心孔。中心孔质量好坏,对后面工序有很大影响。我厂制造的摆动油缸,双向丝杠传动,双头对卡,平头打孔夹具在生产中效果很好,夹具如图1所示。底板2紧固在可移动的床面上,定位块3和浮动定位块4实现曲轴的轴向定位。由于弹簧的作用,件3在法兰盘内滑动,因曲轴的自重克服弹簧力,压下定位块3,
In mass production of crankshafts, the device is suitable for milling both ends of the center hole. Center hole quality is good or bad, have a great impact on the back of the process. I plant manufacturing swing cylinder, two-way screw drive, double-headed card, flat-head punch in the production of good results, the fixture shown in Figure 1. The bottom plate 2 is fastened on the movable bed surface, and the positioning block 3 and the floating positioning block 4 realize the axial positioning of the crankshaft. Due to the action of the spring, the part 3 slides in the flange, the positioning block 3 is pressed down due to the self-weight of the crankshaft against the spring force,