我们在工作中经常需要在塑料板上攻丝。以前我们直接用摇臂钻床攻丝,往往出现缺扣、乱扣现象。原因一是塑料板本身硬度低,钻床主轴平衡重锤重量大,攻丝时丝锥不能顺序切削,出现乱扣。二是由于塑料不易断屑,攻丝完成后,塑料屑往往缠在丝锥上,丝锥反转退出工件时,造成乱 We often need to tap the plastic board in our work. In the past, we directly tap the radial drilling machine, often with missing buckle, chaos buckle phenomenon. One reason is the low hardness of the plastic plate itself, drill spindle balance heavy hammer weight, tapping tap can not be cut in sequence, there chaos buckle. Second, because the plastic is not easy to chip breaking, tapping is completed, the plastic chips are often wrapped around the tap, taps reverse exit the workpiece, causing chaos