介绍了C620-1型普通机床的数控改造意义。对微机控制系统的选择进行了阐述。对机械部分的床身、主轴变速箱、拖板、换刀装置等的改造进行了详细的说明。对于大中型机械制造企业加快技术进步、促进产品升级、增强企业竞争能力具有较强的技术可行性和实际意义。 Introduced the C620-1 ordinary machine numerical transformation significance. The choice of computer control system is described. The mechanical part of the bed, spindle gearbox, carriage, tool changer and other transformations are described in detail. For large and medium-sized machinery manufacturing enterprises to speed up technological progress and promote product upgrades and enhance their competitiveness has strong technical feasibility and practical significance.