1995年3月开始，我厂组织技术力量与北京航空航天大学中航设备改造研制厂一起对曲轴工段精加工的MQ8260曲轴磨床砂轮主轴（共11台）进行改造，取得了显著的成效，下表给出了各方面的比较。在维修费用和劳动强度方面，以设各编号为034－042的一台为例，未改造前每年都要修理两次 March 1995, I plant technical force and the Beijing University of Aeronautics and Astronautics Equipment Research Institute together crankshaft section finishing MQ8260 crankshaft grinding wheel spindle (a total of 11) to transform and achieved remarkable results, the following table to Out of all aspects of the comparison. In terms of maintenance costs and labor intensity, taking the one set at 034-042 as an example, the repairs should be conducted twice a year