我公司朱庄煤矿井下巷道支护过程中,广泛采用U型钢支架。它对顶板来压起到很好的支护作用。而这些U型钢支架的加工工作全部由矿机厂来完成。因条件限制,只能使用立式压力机,而在使用立式压力机弯制U型钢支架需要直立加工,这给加工工作带来诸多不便:加工件不标准不规范,使用人员 In our company Zhuzhuang coal mine tunnel supporting process, widely used U-shaped steel bracket. It is on the roof to play a good pressure to support the role. And these U-shaped stents are all machined by the mills to complete. Due to the limited conditions, only the vertical press can be used. In the vertical press, the U-shaped steel bracket needs vertical machining, which brings a lot of inconveniences to the machining work. The non-standard machining parts are not standardized and the users