Throughout the CMT quantitative production line mechanical manufacturing process technology, its tool cutting and feed speed has not reached the high-speed cutting concept index in some theories, but its production efficiency belongs to the category of high-speed machining. In production practice. This relatively low-speed cutting and more efficient processing technology has passed the rigorous assessment of the competitive market environment.
(2) Parts suitable for small batch processing of CNC machine tools
1. With the gradual decline in the manufacturing cost of CNC machine tools, it is also a way to improve the commissioning time of the program and the preparation time of the tooling.
2. Choose the rigidity of the CNC machine. It is possible to machine parts with high dimensional accuracy, precise tool setting and convenient size compensation.
3. It is also possible to machine parts with a small surface roughness value. The surface roughness depends on the cutting speed and the feed rate in the case where the workpiece and tool material, finishing allowance and tool angle are constant. When processing surfaces with different surface roughness, the surface with small roughness is selected for small feed speed, and the surface with large roughness is selected for larger feed speed, and the variability is very good, which is difficult to achieve in ordinary machine tools.
4. Parts with complex contours. Any plane curve can be approximated by a straight line or an arc. The CNC machine has a circular interpolation function, which can add various complicated contour parts.
Third, the management method of CNC machine tools
The use of CNC machine tools requires both the operator's careful use and scientific management. A sound management system and a scientific production mode are effective means to improve production efficiency.
1. Establish and improve a sound management system, effectively control and supervise the work of CNC machine tool related personnel, so that the whole process of operation and operation of the machine tool is controlled.
2. Strengthen the training of technicians and skilled workers. The training of CNC machining is a long-term work and a process of continuous improvement. Through training technicians, we can compile a more simplified CNC machining process, simplify procedures, and shorten processing time; skilled workers can improve operational skills; managers can better understand the characteristics of CNC equipment, process control, and implement management with modern production management concepts.
3. Scientific organization of production. Improve the problem of unsuccessful work stoppage and production capacity imbalance, improve the operating rate of CNC machine tools, reasonably arrange production beats, and rationally allocate production tasks. By using the similarity of the parts processing, the parts to be processed are classified, so as to be reasonably arranged in the process preparation, production planning and scheduling, and the balance of the production capacity of the equipment is improved. Scientific production batches will greatly reduce the ratio of machine adjustment time and tooling preparation time, which can improve batch efficiency.
4. In order to play the value of CNC machine tools. The operator must correctly master the operating principles of CNC machine tools. Correctly operate the machine according to the machine operation rules; machine the parts according to the process and program requirements; coordinate the parts, tools, pressure plates and other dimensions before processing to avoid interference and collision; improve the technical quality, reduce the non-processing time such as loading and alignment; correct maintenance A variety of accessories ensure accurate accuracy.
In short, the application of CNC machine tools has become increasingly widespread. How to “manage, use, and maintain good†CNC machine tools has become an important issue to be solved. The use of CNC machine tools is not a simple use of equipment, it is a very strong application engineering. Only scientific management, fully understand the characteristics of CNC machine tools, and coordinate the balance of various production links, can truly exert its economic benefits.
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