论文部分内容阅读
图1所示为踏脚板类零件,两组φ6H7同心孔的位置度允差0.02mm。工艺拟定以孔φ8H7和凹槽50H7×10定位,其凹槽厚度尺寸变化范围在20～25mm,表面光洁度为▽4。以前用专用钻模钻铰,生产效率低,钻模品种规格繁多。后来改用快速装卸通用可调钻模(见图2),不但保证了加工质量,降低工人劳动强度,而且提高工效2～3倍。快速装卸通用可调钻模的结构见图2。其快速夹紧器是该通用可调钻模的重要组合件(见图3)。当
Figure 1 shows the step-type parts, two sets of φ6H7 concentric hole position tolerance 0.02mm. Process planning to hole φ8H7 and groove 50H7 × 10 positioning, the groove thickness size range 20 ~ 25mm, surface finish ▽ 4. Previously used special drill drilling hinge, low production efficiency, drilling a variety of specifications. Later switched to quick loading and unloading universal adjustable drilling (see Figure 2), not only to ensure the processing quality, reduce labor intensity, but also to improve work efficiency 2 to 3 times. Quick loading and unloading general adjustable drill structure shown in Figure 2. Its quick clamp is an important assembly for this universal adjustable drill (see Figure 3). when