Machining characteristics of CNC lathes

1. High machining accuracy

CNC lathes cut parts according to instructions given in digital form. At present, the pulse equivalent of CNC lathe (that is, the corresponding feed movement of CNC lathe tool after each output pulse) can reach 1um, and some can even reach 0.1um. The reverse clearance and pitch error of the driving screw of the moving parts can be compensated by the NUMERICAL control system, so the numerical control lathe can process the parts with higher precision requirements. At present, the specifications of domestic production (rotary diameter) in the following 1000mm CNC lathe positioning accuracy in 0.01mm, and positioning accuracy control in 0.02mm. In addition, the domestic machine tool manufacturers on the transmission system and machine tool structure have taken good technological measures, so the machine tool has good stiffness and thermal stability, the main components of high manufacturing accuracy. CNC lathe automatic cycle processing mode and avoid the influence of human factors, so that the size of the processed parts is good consistency, product qualified rate is high, quality stability.

2. High productivity

The processing time of parts is composed of actual cutting time and auxiliary time. Because the CNC lathe can achieve large cutting, high line speed cutting and has a fast empty moving speed, so the processing efficiency of CNC lathe is much higher than that of ordinary lathe. CNC lathes generally have good rigidity, allowing large cutting volume of strong cutting, saving rough machining time. CNC lathes can realize infinitely variable speed. At present, some small CNC lathes can reach the highest speed of 8000r/min, the specification can reach 3000~4500r/min, so as to broaden the speed selection range, you can get better linear speed. The selection of feed, according to the tool durability, material processing performance and the actual experience of the operator to determine. The moving speed of moving parts, the current domestic production of CNC lathes up to 25m/min above, fast movement can greatly reduce the auxiliary time of air transportation. These favorable conditions provide a reliable guarantee for the increase of productivity. When production is medium batch, CNC lathe can show its superiority more. After the investigation of some domestic users manufacturers, CNC lathe productivity (like ratio)

It is 3 ~ 5 times higher than ordinary lathe.

3. applicability

When machining new parts on CNC lathes, it is only necessary to re-compile and input processing programs, and adjust the machine tools and cutters slightly to realize the processing of parts. This provides great convenience for complex structure of single, small batch and trial-produce new products. It shortens the production preparation period and saves a lot of equipment cost. Especially for some precise and complex parts, it is difficult or impossible to process on ordinary lathes, but automatic processing can be realized on CNC lathes. CNC lathe automation degree is high, labor intensity is low, the operator's working conditions are greatly improved.

4. Conducive to modern management

CNC lathe processing, can accurately calculate the processing time, and can effectively simplify the work, clamping, measuring tools and finished products, semi-finished parts management. CNC lathes are also suitable for computer network operation, computer aided design, manufacturing and management integration.

5. The price is more expensive but the economic benefit is good

Because CNC machine tools use many high, new, cutting-edge advanced technology, the overall price of CNC machine tools is higher. But CNC lathe processing precision is high, good quality stability, high efficiency, so can obtain good economic benefits.