1. Accuracy advantage
Universal lathe by gear and ordinary screw nut drive. Due to the existence of gaps between each parts when movement, coupled with the manual operation is not accurate, so the repeat accuracy is lower. Need to manually stop the measurement of universal lathe measurement, measurement error larger.
CNC lathe driven by ball screw drive with motor. the ball screw has interference after pre-tension installation, no gap transmission, the accuracy of the machine itself and the program guarantees. In processing, it can do position measurement by encoder, can compensate for tool wear and other causes of error. So processing quality, accuracy and stability.
2. Mass production efficiency advantages
The universal lathe needs a skilled operator. Due to the use of manual three-jaw chuck, and measurement must be manually measured after parking, processing inefficiency.
In mass production, the use of hydraulic chuck or collet clamping the workpiece, an unskilled worker can operate at least two CNC lathes at the same time. Production efficiency is more than 4 times the universal lathe.
3. Pass rate advantage
Universal lathe as a manual operation, human influence is very large, once the operator’s physical condition or lack of concentration, product rejection rate will rise sharply.
CNC lathe basically rely on equipment to ensure machining accuracy, the operator basically only played the role of loading and unloading work pieces and switches, human impact is very small, so the product pass rate is relatively high.
4. Procurement costs higher
The same specifications of CNC lathe price is 1.5 times more than universal lathe. However, with the decline of the price of CNC system, the disadvantages of CNC lathe cost will be getting smaller and smaller.
5. One-piece processing costs are higher now
The current CNC lathe single-piece processing cost is higher than universal lathe. However, if improved, CNC lathes will also outperform conventional lathes in the cost and efficiency of a single piece of production.