由上海机床厂和秦川机床厂制造的y7131磨齿机是我们齿轮加工行业中常用的一种精密机床。经我厂多年的使用实践表明,这种机床性能稳定,只要经常调正精度注意维修保养,一般不须进行大修。但是我们也发现,该机床回转工作台的环形导轨以及回转工作台与滑鞍结合面(见图)经过一段时间使用之后,磨损较为严重,其中,回转工 Y7131 grinding machine manufactured by Shanghai Machine Tool Factory and Qinchuan Machine Tool Factory is a kind of precision machine tool commonly used in gear machining industry. After many years of our factory practice shows that this machine tool performance is stable, as long as the regular precision of attention to maintenance, generally do not need overhaul. However, we also found that the ring guide of the rotary table of the machine tool and the combination of the rotary table and the saddle (see the figure) wear more seriously after a period of use, in which the rotary workers