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УΦ５２２０—０６龙门铣是我厂从俄罗斯进口的大型铣削机床，其垂直铣头安装在可升降的横梁上，通过横梁的升降和垂直铣头的上下来增大机床加工范围。而该横梁夹紧和放松是通过安装在横梁上一套液压系统来实现的，如图１所示。其工作原理是：由安装在油缸内的碟簧对横梁夹紧
УΦ5220-06 Gantry milling is a large-scale milling machine imported from Russia by our factory. The vertical milling head is installed on the crossbeam that can be raised and lowered, which increases the processing range of the machine through the lifting and lowering of the crossbeam and the vertical milling head. The beam clamping and loosening is achieved by installing a hydraulic system on the beam, as shown in Figure 1. Its working principle is: the disc spring installed in the cylinder clamping the beam