我厂机器车间青年工人宋新生和侯国光两位同志,在加工7510M的连杆(如圆la)和 7520的连杆(如图 1σ)时,改用精车代磨提高生产效率3～4倍多。 这两个连杆在7520和 7510M两种拉床上是很主要的部件。本厂受设备限制没有3公尺的外圆磨床,因此就利用现有设备,以下列方法迸行加工:①粗 Song Xinsheng and Hou Guoguang, the young workers in the machine shop of our factory, commented on the improvement of the production efficiency when using 7510M connecting rods (such as round la) and 7520 connecting rods (Figure 1σ) More times. These two connecting rods are the main components on both the 7520 and 7510M broaches. The factory is limited by the equipment does not have a 3-meter cylindrical grinder, so the use of existing equipment, the following methods for processing: ① crude