The CNC lathe is driven by the stepping motor to drive the ball screw. Because the ball screw can have an interference, the drive has no gaps, and the accuracy is mainly guaranteed by the machine tool and the program.
It can be automatically measured during the machining process, and can automatically compensate for errors caused by tool wear and other reasons. Therefore, the processing quality is good and the precision is stable. You can also use the programming method to turn out parts with complex shapes that are difficult to process on ordinary lathes. Suitable for parts with high precision, large batch and complex shapes. But small batch production is also very useful. Its maintenance cost is higher than ordinary lathes.
Ordinary lathes are driven by gears and ordinary screw nuts. Due to the gaps between each pair of movements and the inaccurate manual operation, the repeat accuracy is low. When measuring with an ordinary lathe, it needs to be manually measured after parking, which has a large measurement error and low efficiency. It is suitable for small batches, low precision requirements, and spare parts. Its investment is lower than that of numerical control, but it requires higher operating skills for workers, so the wage level is higher. The waste rate and productivity of low-level workers can cause headaches.