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“机械工人”1957年7期介绍的铣床用的镗孔夹头,我厂进一步作了修改,使它的结构更加简单了,并且同样能精确的掌握吃刀量。我厂用这夹头在立铣床上镗制φ20～φ200公厘的孔,效果很好。夹头改进后的结构如附图所示。图中1是夹头主体,锥柄与铣床主轴锥孔配合。2是丝杆,螺纹规格为M20×2,头部刻有刻度线一百格,移动一格可进刀0.02公厘。3是移动V形铁。4是并帽。5是螺钉。6是紧刀螺钉。7是调整板。
“Mechanical workers” 1957 7 introduced the milling machine with a chuck chuck, I further made changes to the factory to make it more simple structure, and the same can accurately grasp the amount of eating. I use this machine chuck in the vertical milling machine boring φ20 ~ φ200 mm hole, the effect is very good. Improved chuck structure as shown in the figure. Figure 1 is the main chuck, taper shank and milling spindle spindle with. 2 is a screw rod, thread size M20 × 2, the head engraved with a tick grid, move a grid can feed 0.02 mm. 3 is moving V-shaped iron. 4 is a hat. 5 is the screw. 6 is a knife blade screw. 7 is the adjustment plate.