The double-column vertical lathe can be used for processing brake discs, especially some large and heavy brake discs. This type of vertical lathe has some advantages and is suitable for the production of brake discs:

1. Stability and rigidity: Double-column vertical lathes usually have high rigidity and stability, which is very important for processing large and heavy brake discs to ensure accuracy and surface quality during the processing.
2. Workbench size: This type of lathe usually has a larger workbench size that can accommodate large brake discs while also providing sufficient processing space.
3. Automation and CNC control: Modern double-column vertical lathes are usually equipped with CNC control systems, which can realize automated processing processes, including automatic tool transposition, workpiece clamping and adjustment of processing parameters, thereby improving production efficiency.
4. Multi-function tool tower: Some double-column vertical lathes are also equipped with a multi-function tool tower that can accommodate many different types of tools to adapt to different cutting needs.
5. Cooling system: Brake disc processing usually requires a large amount of coolant, and these lathes are usually equipped with a powerful cooling system to ensure the cooling effect during processing.

In general, the double-column vertical lathe is a suitable tool for processing brake discs and can meet the needs for high-precision and high-efficiency processing of large and heavy workpieces. However, the specific processing process and parameters still need to be adjusted and optimized according to the material, size and requirements of the brake disc to ensure the best processing quality. In addition, safe operating procedures also need to be followed to ensure the safety of operators.