M 7130平面磨床的垂直进刀由丝杆与滚动螺母控制。丝杆和滚动螺母在制造和调试过程中有微量的间隙。使用一段时间后,丝杆就会产生微量的磨损,增大了间隙。同时,由于磨头的重心不在丝杠上,容易产生倾斜,就会增加导轨的摩擦力,使磨头产生“落刀”现象。不仅影响加工精度以至造成工件报废,而且调整滚动螺母时必须拆下磨头,给维修带来不少困难。针对上述情况,我们利用磨床内部空间,安装了平衡锤装置。由附图可见,从磨头上固定一根6米钢丝绳,通过滑轮3在另一头钢丝绳吊一件80公斤平衡锤,以减小磨头的自重下 The vertical infeed of the M 7130 surface grinder is controlled by the spindle and roll nut. Screws and rolling nuts in the manufacturing and debugging process with a slight gap. After use for a period of time, the screw will produce a slight amount of wear and tear, increasing the gap. At the same time, the grinding head is not on the lead screw, prone to tilt, it will increase the rail friction, the grinding head to produce “falling knife” phenomenon. Not only affect the processing accuracy and cause scrapped parts, and adjust the rolling nut must be removed when the grinding head, maintenance to bring a lot of difficulties. In view of the above situation, we use the internal space of the grinder, the installation of a counterbalance hammer device. It can be seen from the attached figure that a 6-meter wire rope is fixed from the grinding head and an 80-kilogram counterweight is hung on the other wire rope through the pulley 3 to reduce the weight of the grinding head