日常维修或大中修立式钻床时,常常要研磨钻床主轴的衬套。在缺乏研磨机的情况下,通常是靠手工研磨。不仅劳动强度大,而且生产效率低。不久前,我们自制了一台简易设备,即在一根废旧钻床主轴的一端加工一个φ10D_4孔,装上一个圆柱销,用叉口接头将废旧主轴与研磨棒连接起来(见附图), Routine maintenance or repair of large and medium vertical drilling machine, often grinding drill spindle bushing. In the absence of a mill, grinding is usually by hand. Not only labor-intensive, but also low productivity. Not long ago, we made a simple piece of equipment by machining a φ10D_4 hole at one end of a worn-out drill spindle, attaching a cylindrical pin, connecting the spindle to the grinding rod with a fork joint (see attached)