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我厂生产的油压马达柱塞（图1），表面光洁度和尺寸精度要求高。用M1040无芯磨床磨削的零件长期达不到图纸设计要求，因该机床磨削的表面光洁度最高只能达▽9，而柱塞的表面是▽10，由于机床用了多年，磨削▽9就很困难。为了提高柱塞的表面光洁度，我们将一台报废的C616型车床，拆去方刀架和小拖板，将电动机、角铁和连接件安装在油板箱上，改装成一台抛光机。用软布轮加305绿色抛光膏，所抛的柱塞表面光洁度，经质量检验部门鉴定达到▽11级，还可将沉割槽两侧的磨削锋口抛掉，从而保证了零件的质量。实践证明，效果很好。我们认为该抛光机具有结构简单、制造容易、使用方便等优点。
The hydraulic motor plunger (Figure 1) produced by our factory requires high surface finish and dimensional accuracy. The parts that were ground with the M1040 coreless grinding machine could not reach the drawing design requirements for a long time, because the surface roughness of the machine grinding can only reach ▽9, and the surface of the plunger is ▽10. Since the machine tool has been used for many years, the grinding machine has been used. 9 is very difficult. In order to improve the surface finish of the plunger, we will remove a scrapped C616 lathe, remove the square tool holder and the small pallet, install the motor, angle iron and connecting pieces on the oil board box and convert it into a polishing machine. The 305 green polishing paste is added with a soft cloth, the surface roughness of the thrown plunger is ▽11 graded by the quality inspection department, and the grinding fronts on both sides of the sinker groove can also be thrown away, thus ensuring the quality of the parts. . Practice has proved that it works well. We believe that the polishing machine has the advantages of simple structure, easy manufacture and convenient use.