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我厂在增产节约运动中,将历年积存下来的204/01和205/01车加工第一道工序所产生的废品,采用“冷缩孔整径” 的方法进行改制,可以挽救85％的废品,现已利用一万多件,效果较好。具体方法如下: 车加工第一道工序产生的废品大部份是由于内径车削超差和椭圆。因此,在63吨压力机上,利用图示模具结构对这类废品进行冷缩孔整径。每次整径时工件外径缩小量为0.6～0.8毫米左右,所以返修件一般分三次整径缩孔到所需尺寸,具体工艺尺寸见表所列。整径时用废机油润滑模具。整径后工件
I plant in the campaign to increase production and saving, will be preserved over the years 204/01 and 205/01 car processing the first process of waste generated by the “shrink hole diameter” method of restructuring, you can save 85% of the waste , Has been using more than 10,000 pieces, the effect is better. The specific methods are as follows: Most of the waste generated by the machining of the first process is due to the inner diameter turning tolerance and ellipse. Therefore, in the 63-ton press, the use of the mold structure shown in this type of waste shrink hole diameter. Each diameter when the diameter of the workpiece is reduced to 0.6 ~ 0.8 mm or so, so the repair parts are generally three times the diameter of the shrink hole to the desired size, the specific process size listed in the table. Spool with waste oil lubrication mold. After the entire diameter of the workpiece