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我厂过去在铸铁机体上攻M10～30的螺丝孔,是完全由装配钳工用手工操作来完成的。这样所攻出来的螺丝孔,不能保证垂直,嚴重的影响质量;另一方面,工作效率低,劳动强度大。后来我们制造了一个M10～30机器攻丝保险夹头(图1),利用它在悬臂鑽上攻螺丝孔,工作效率提高10～17倍,特别保证了螺孔的垂直,大大地减轻了劳动强度。用这种保险夹头攻不通孔时,可以保证丝攻不致因攻到了头而折断。
I plant in the past on the cast iron body attack M10 ~ 30 screw holes, is entirely by the fitter to complete the manual operation. The screw holes thus tapped out can not guarantee the vertical and serious impact on the quality. On the other hand, the work efficiency is low and the labor intensity is high. Later, we made a M10 ~ 30 machine tapping insurance chuck (Figure 1), the use of it in the cantilever drilling tapping screw hole, work efficiency increased 10 to 17 times, in particular, to ensure the vertical screw hole, greatly reducing the labor strength. With this kind of safety chuck to attack the hole, you can ensure that the tapping will not break due to attack the head.