论文部分内容阅读
我厂加工的一种连杆(见图1),螺钉孔中有深9mm的定位孔,其直径为12.2~(0.019)mm,粗糙度要求R_a1.6μm。为了保证定位孔的精度,工艺安排在Z535立式钻床上铰连杆定位孔,为此我们设计了杠杆式铰孔夹具,满足了工艺要求。1.夹具结构杠杆式铰孔夹具的结构见图2。它主要由夹具体、钻模板、压板等件组成的。夹具体12通过T形螺栓与机床工作台连接,靠近夹具体的下端部有一通孔,让压板7通过钻模板13固定在夹具体12的上端,钻模板13上有衬套3和铰套2。限位轴4和限位板5都连接在夹具体12上。压板7的一端有顶轴6与工件接触,另一端开有沟槽,双头螺栓8一端在沟槽里,另一端固定在夹具体上。靠近沟槽的一端,压板7通过销轴11与支柱10连接,压板7和销轴是间隙配合。支柱10在
I plant a connecting rod processing (see Figure 1), screw holes deep 9mm positioning holes, the diameter of 12.2 ~ (0.019) mm, roughness R_a1.6μm. In order to ensure the accuracy of the positioning hole, the process is arranged on the Z535 vertical drilling machine hinge rod positioning hole, for which we designed a lever reaming fixture to meet the technical requirements. 1. Fixture Structure Lever Reaming fixture structure shown in Figure 2. It is mainly composed of clamp body, drilling template, platen and other components. The clamp body 12 is connected with the machine table through the T-shaped bolt. A through hole is arranged near the lower end of the clamp body so that the pressure plate 7 is fixed on the upper end of the clamp body 12 through the drilling template 13. . The stopper shaft 4 and the stopper plate 5 are both connected to the clamp body 12. One end of the pressure plate 7 has a top shaft 6 in contact with the workpiece and the other end has a groove. One end of the stud 8 is in the groove, and the other end is fixed on the clamp body. Near one end of the groove, the pressure plate 7 is connected to the column 10 via a pin 11, which is a clearance fit. Pillar 10 in