在C620车床上,经常进行钻、扩、铰孔以及攻丝、套丝等工序时,尾架移动、松开夹紧频繁,劳动强度大,生产效率低,特别是加工孔径20毫米以上,深度超过200毫米的孔时,一次移动尾架还不能完成工作。为此,我们制作了一个如图所示的代用尾架,能机械走刀,省力、安全、减少辅助时间,提高工效。大溜板后面装有两个支架8,座架2一端装在支 In the C620 lathe, often drilling, expanding, reaming and Tapping, threading and other processes, the tailstock move, release clamping frequency, labor-intensive, low productivity, especially the processing aperture of 20 mm or more, the depth When the hole exceeds 200 mm, moving the tailstock at one time can not get the job done. To this end, we have produced a substitute tailstock, as shown in the figure, which can be mechanically driven, labor-saving and safe, reduce auxiliary time and improve work efficiency. Big skateboard behind with two brackets 8, one end of the seat frame 2 installed in the branch