旧轨利用前必须整修。钢轨在锯成标状长度后，两端螺栓孔的钻削加工是旧轨整修的重要问题。作者根据组合机床的思路，设计了一种新型钻削设备，钻孔准确，适应性强，简单可靠，且可实现半自动控制，可达到节省投资、提高生产率的目的。 Old rail must be renovated before use. After sawing the rails into the standard length, the drilling of the bolt holes at both ends is an important issue for the renovation of old rails. According to the idea of ​​combined machine tools, the author designed a new type of drilling equipment, which has the advantages of accurate drilling, strong adaptability, simple and reliable, and semi-automatic control, which can save investment and increase productivity.