First, the adaptability to the processing object is strong. When changing machining parts on a CNC lathe, it is only necessary to re-program the program, and the new program Guo can realize the processing of new parts, which provides great for the single-piece, small-volume production and trial production of new products. convenient. For precision and complex parts that are difficult or impossible to machine on ordinary manual machines, CNC lathes can also be machined automatically.
Second, the processing accuracy is high. CNC lathes are machined in digital form. At present, the pulse equivalent of CNC lathes generally reaches 0.001, and the backlash of the feed drive chain and the screw pitch error can be compensated by the numerical control device. Therefore, the numerical control lathe can achieve high machining accuracy. For medium and small CNC lathes, the positioning accuracy is generally 0.03, and the repeat positioning accuracy is 0.01.
Third, the degree of automation is high and the labor intensity is low. The machining of the parts on the CNC lathe is done automatically according to the pre-programmed procedure. The operator does not need to perform complex repeatability except for placing the punching belt or operating the keyboard, loading and unloading the workpiece, intermediate detection of key processes and observing the machine operation. Manual operation, labor intensity and tension can be greatly reduced, plus CNC lathes generally have better safety protection, automatic chip removal, automatic cooling and automatic lubrication devices, the operator's working conditions are greatly improved.
Fourth, high production efficiency. The time required for part processing mainly includes two parts: maneuver time and auxiliary time. The range of the rotational speed and feed rate of the CNC lathe spindle is larger than that of the ordinary machine tool, so the most advantageous cutting amount can be selected for each process of the CNC lathe. Due to the structural rigidity of the CNC lathe, it is possible to perform strong cutting with a large amount of cutting, which improves the cutting efficiency and saves maneuver time. Because the moving motion of the moving parts of the CNC lathe is fast, the clamping time and auxiliary time of the workpiece are less than that of the general machine tool.
When the CNC lathe replaces the machined parts, it is almost unnecessary to re-adjust the machine, thus saving the time for component installation and adjustment. The processing quality of CNC lathes is stable. Generally, only the first piece inspection and the sampling of key dimensions between processes are performed, thus saving the downtime inspection time. When machining on a machining center, a machine tool realizes continuous processing of multiple processes, and the improvement of production efficiency is more obvious.
5. Good economic returns. Although CNC lathes are expensive, the depreciation of equipment on each part during processing is high, but in the case of single-piece, small-volume production:
1. Using CNC lathe processing can save the working hours of the line, reduce the adjustment, processing and inspection time, and save the direct production cost;
2, the use of CNC lathe processing parts generally do not need to make special fixtures, saving the cost of process equipment.
3. The precision of CNC machining is stable, which reduces the scrap rate and further reduces the production cost.
4, CNC lathe can achieve a multi-purpose machine, saving plant area, saving investment in construction. Therefore, the use of CNC lathes still yields good economic benefits.