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SRm 125/15000捷制大型车床,全长18m,导轨总长16m,有效加工长度15m。由于导轨长,在维修这台机床时,床身导轨的精度修复和调整是最重要的,修理后要求恢复其原有的几何精度。修前曾先用光学准直仪测定该导轨的几何精度,发现原有几何精度大部分都已丧失,如拖板导轨在垂直平面内全长上的直线度误差为0.2mm;水平面内全长上的直线度误差为0.1mm,这两项误差与我国同类型大型车床相比,均已超差。另外还测得尾座导轨、压板导轨的几何精度变化不大,稍有超差。这为维修提供了第一手资料。根据导轨长度和维修设备、工具等情况,在安排修理方案时,我们采用了就地磨
SRm 125/15000 Czech-made large lathe, full-length 18m, guide rail length 16m, effective processing length 15m. Due to the long guideways, when repairing this machine tool, the accuracy of the bed guide rail repair and adjustment is the most important, after repair required to restore its original geometric accuracy. Before repair, the optical collimator was used to measure the geometric accuracy of the guide rail. Most of the original geometric precision was lost. For example, the straightness error of the carriage guide rail in the vertical plane was 0.2 mm. The horizontal length On the straightness error of 0.1mm, these two errors compared with the same type of large lathe, have been ultra-poor. In addition, it also measured the tailstock rail, plate rail geometry changes little, slightly over tolerance. This provided first-hand information for maintenance. According to the rail length and maintenance equipment, tools, etc., in the arrangements for the repair program, we use the local grinding