Double-column vertical lathe is a machine tool used to manufacture precision heavy-cut hard rails. It has the following features and functions:

1. Rigid structure: The double-column vertical lathe adopts a strong double-column structure and high-quality bed material, which ensures the high rigidity and stability of the machine tool. This structure can maintain stable cutting performance under high load conditions and meet the processing requirements of precision heavy cutting hard rails.
2. High-speed cutting: The double-column vertical lathe is equipped with high-power spindle and high-speed feed system, which can realize fast cutting of hard rails. This high-speed cutting increases productivity while maintaining machining quality and surface accuracy.
3. Precision machining: The double-column vertical lathe can realize precision machining of hard rails by adopting high-precision numerical control system and precise measuring device. It can maintain small dimensional deviation and surface roughness, and meet the requirements for track track accuracy and geometry.
4. Multi-functional processing: double-column vertical lathe can be used for processing hard rails of different types and sizes. It can complete various processes such as external turning, internal hole processing, grooving, chamfering and thread processing.
5. Automatic control: The double-column vertical lathe is equipped with advanced numerical control system and automatic control device, which can realize automatic cutting process and automatic selection of tool path, improve processing efficiency and reduce manual intervention.
6. Process monitoring and optimization: The double-column vertical lathe is equipped with a process monitoring and optimization system, which can monitor parameters such as cutting force, temperature and vibration during processing, and optimize the processing process by adjusting tool paths and cutting parameters.

Double-column vertical lathes for manufacturing precision heavy-cut hard rails are widely used in rail transit, high-speed railways and other fields. It can meet the high requirements for hard rail processing quality, processing efficiency and geometric accuracy, and contribute to the safety and reliability of railway traffic. Again, specific performance and features may vary by manufacturer and configuration, and further reference to the machine's technical specifications and owner's manual is recommended.