The characteristics of CNC turning are mainly reflected in machining efficiency, cost, production adaptability, and machining accuracy.
High Machining Efficiency: CNC turning utilizes large depths of cut and high workpiece speeds, resulting in metal removal rates that are typically several times higher than grinding. For example, the metal removal efficiency of hard turning is significantly higher than that of traditional grinding.
Multiple surface machining operations (such as internal and external cylindrical surfaces, conical surfaces, threads, etc.) can be completed in a single setup, reducing auxiliary time and achieving high positional accuracy between machined surfaces. Grinding, on the other hand, requires multiple setups, resulting in lower efficiency.
Low Equipment Investment Costs: At the same productivity, the investment cost of a CNC lathe is significantly lower than that of a grinding machine, and the cost of auxiliary systems is also lower.
Small-batch production requires no special equipment, only a general-purpose CNC lathe; while large-batch machining of high-precision parts requires high-rigidity, high-positioning-accuracy CNC machine tools, the overall cost is still lower than that of grinding.
Adaptable to Flexible Small-Batch Production: Lathes have a wide machining range, are easy to operate, and offer fast setup, flexibly meeting the needs of multi-variety, small-batch production.
Hard turning technology allows for the machining of different materials by adjusting cutting parameters, eliminating the need for frequent equipment changes and making it more suitable for flexible production requirements than grinding.
Hard turning improves overall machining accuracy. Most of the heat generated during hard turning is carried away by the cutting oil, preventing surface burns and cracks, resulting in a surface finish superior to grinding.
It enables high roundness machining and ensures high positional accuracy between surfaces, making it particularly suitable for precision machining of high-hardness materials (such as hardened steel and chilled cast iron).
