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在拖拉机装配工作中,常碰到一些零件上需要拧上许多双头螺栓,过去我们用手工一只一只的拧,既费工又费力。现在我们采用了一种专用的扳丝夹头,该夹头结构简单,工作可靠。夹头可以装在专用的扳丝机上(其结构与一般台钻差不多),也可以将夹头装在一般台钻上,不过只适用于台钻最慢一档转速,因为当转速太快时,一则扭矩小,二则工作时工作头不易对准螺丝。扳丝夹头工作原理如下(见图):
In the tractor assembly work, often encounter some parts need to screw a lot of studs, in the past we used a manual screwed, both laborious and laborious. Now we use a special wire clamp, the chuck structure is simple and reliable. Chuck can be installed in a special wire drawing machine (its structure is similar to the general Taizuan), you can also install the chuck on the general bench drill, but only for the slowest bench speed a file speed, because when the speed is too fast , A small torque, two working head is not easy to align the screw. Wire chuck working principle is as follows (see photo):