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图1所示是我厂生产的接头类零件组,该类零件品种规格繁多,中小批量生产;但结构、材料、工艺相似,定位基准相同;在圆柱部位都有小孔需要加工。这些孔位中心线各自保持与定位孔中心线和圆柱端面垂直或者平行;孔位间的垂直度、平行度及位置度亦较高.为此,为了减少专用钻床夹具,减轻工人的劳动强度,我们设计了如图2所示的快速装卸可调钻床夹具。经过长期使用证明,该钻床夹具不仅保证了零件组的加工精度;而且提高工效2～3倍. 快速装卸可调钻床夹具的结构见图2;其V形块4按零件外形制造,置于基体1导槽内,用手柄螺钉固定。螺钉7、圆柱销8构成快速装卸压紧机构,用双线螺纹连接在支臂6上,压紧力通过光压块9作用在
Figure 1 shows the factory production of the joint parts group, the types of parts of various specifications, small batch production; but the structure, materials, processes similar to the same positioning benchmark; in the cylindrical parts have holes need to be processed. The centerline of these holes are respectively perpendicular to or parallel to the centerline of the positioning hole and the cylindrical end surface, and the verticality, parallelism and position degree of the holes are also higher.Therefore, in order to reduce the special drilling jigs and reduce the labor intensity of the workers, We designed the quick loading and unloading adjustable drilling fixture shown in Fig.2. After long-term use proved that the drilling fixture not only ensures the machining accuracy of the part group, but also improve the work efficiency of 2 to 3 times.The structure of the quick loading and unloading adjustable drilling fixture is shown in Figure 2, the V-shaped block 4 is manufactured according to the part shape, 1 guide groove, with the handle screw. Screw 7, the cylinder pin 8 constitute a quick loading and unloading compaction mechanism, with a two-threaded connection on the arm 6, the pressing force through the optical compact 9 role