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农厂采用拉挤法对精度及光洁度要求较高的小直径内孔进行加工,取得了较好的效果。这里介绍一下拉挤装置、刀具及工艺参数。拉挤装置拉挤装置见图1。支座1固定在车床拖板上或专用床身上,套4与支座1内孔配合并由螺钉5紧固在一起,拉杆2与套4配合良好。与拉杆2相连接的螺母(图2中件7)安装在车头主轴上。当主轴及螺母旋转时,由于键3的作用,使拉杆2只能在套4内往复移动,从而得到拉挤工件所需要的运动。拉挤速度由车床主轴的转速夹控制。
Pulp and pultrusion farms with high precision and finish requirements of small diameter hole processing, and achieved good results. Here to introduce pultrusion devices, tools and process parameters. Pultrusion device Pultrusion device shown in Figure 1. The support 1 is fixed on the lathe carriage or a special bed, the sleeve 4 cooperates with the inner hole of the support 1 and is fastened together by the screw 5, and the tie rod 2 cooperates well with the sleeve 4. The nut (Figure 7, item 7) attached to tie rod 2 is mounted on the main spindle. When the spindle and the nut are rotated, the lever 2 can only reciprocate within the sleeve 4 due to the function of the key 3, so as to obtain the required movement for pulling the workpiece. Pultrusion speed by the lathe spindle speed control.