集风器是各型通风机的一种零件,这种零件都是要经过压模压制成型。集风器零件质量的好坏较大程度上是取决于压模。过去生产这种凹圆弧压模是用回转工作台手动操作车削,凸圆弧压模是用铁板划出压模所需圆弧线,使大小拖板同时动作,让指针照铁板 The collector is a type of fan of all kinds of parts, these parts are to be molded by compression molding. The quality of the collector parts depends largely on the quality of the stamper. In the past, the production of such a concave circular arc die rotary table is manually operated turning, convex arc die is drawn with iron plate required arc line, so that the size of the drag plate at the same time, so that the pointer according to iron