长春第一汽车厂从日野公司引进了同步器变速箱制造技术,由于该新型变速箱中各种轴类及盘类零件要求加工精度高、生产节拍短、质量要稳定可靠,“一汽”决定选用数控车床来进行车削加工。该厂除少数数控机床仍需进口外,根据同步器变速箱零件的加工工艺特点,对国内机床厂生产的数 Changchun No. 1 Automobile Factory introduced synchronizer gearbox manufacturing technology from Hino. As the shaft and disk parts in this new gearbox require high machining precision, short production cycle and stable and reliable quality, FAW decided to use CNC lathes for turning. In addition to a few CNC machine tools still need to import the plant, according to the synchronizer gearbox parts processing technology features, the number of domestic machine tool plant production