箱体（Box）.docVIP

箱体（Box） The mechanical processing process of the quick box case The gear box mechanical processing production line arrangement is the first surface after the hole principle, finally adds the thread hole. Such arrangement, Can first put the casting defects of pores, trachoma, crack exposed in the machining plane, in order to reduce unnecessary Man hour consumption. In addition, the machining of the inner hole with the plane as the positioning standard guarantees the relative position between the hole and the plane and between the hole and the hole A robe of. The spider hole pre tapping is arranged in the back section of the production line to shorten the oil delivery distance of the workpiece and prevent the main conveying meter Facial strain. The machining process of the gear box is basically divided into three stages, namely rough machining, semi finishing and fine machining Work stage. From rough rough milling to final inspection of finished products, there are 33 processes. Its main processing steps, such as table 3.2.1a Five. Analysis of processing technology and typical jig for transmission case 1. selection of positioning reference. There are two ways to select the rough reference of the gear box. First, in order to ensure the main shaft The processing allowance of the bearing hole is even, and there is sufficient assembly gap between the parts in the box body, and the bearing hole is used as a rough benchmark. This way clip The structure is complex, and the auxiliary support is needed after the parts are positioned. The workpiece is of poor stability. CA1flC gearbox case is bearing Bore as a rough datum. The second is to produce the process platform for the rough base on the blank of the gear box The blank surface of the process boss to the main work surface is maintained in strict size and tolerances, LF06S with synchronizer, gearbox case The coarse reference is selected in this manner, as shown in figure 3.2.3. This rough base selection guarantees the main