How to Improve the Precision of Numerical Control Machine Tools
Numerical control machine tools have great significance to improve the accuracy and stability of product machining. In particular, the newly-developed five-axis linkage machine tools are mainly used in the production and processing of aircraft parts and precision parts, which is of great significance to improve the competitiveness of machinied products in the market.
However, the precision of numerical control (NC) machine tools is limited by many factors such as spindle, cutting tool and machine structure. In order to improve the precision of CNC machine tools, we must first improve the performance of these components, and then improving the precision of the machine tool.
1. Improvement of machine tool parts
The main parts of the machine tool include spindle, feed components, ball screws, linear guide rails, positioning components, fixed components, cutting tools, etc. They should be adjusted before machining. The reasonable selection of these components is essential for the stability and accuracy of machining. The reasonable selection of machine tool components has a great relationship with the rationality of machine tool design, as well as the quality of processing and usage of machine tool components.
2. Adjustment and maintenance of machine tool components
The reasonable selection of machine tool parts is the foundation of improving the precision of numerical control machine tools. Adjustment and maintenance of machine tool components is also very important. In this way, not only the accuracy and stability of machining can be increased, but also the productivity and efficiency can be improved.
3. Improvement of machine tool structure
The improvement of machine tool structure mainly includes two aspects: one is the improvement of the rigidity of the machine tool structure, and the other is the improvement of the stability of the machine tool structure. In order to improve the accuracy and stability of machining, it is necessary to improve the rigidity and stability of the machine tool structure.
CNC machines are usually equipped with encoder feedback, which is an important means to improve the accuracy of machine tools. The encoder can output the position signal of the spindle axis, which can be used to monitor the position error of the machine tool. With the accuracy compensation technology, the accuracy of machining can be effectively improved.
4. Optimization of cutting parameters
The optimization of cutting parameters is an important part to improve the precision of numerical control machine tools. The selection of cutting parameters involves cutting speed, feed speed, depth of cut, workpiece clamping method, chip control and so on. They all affect the cutting process, which directly affects the precision and efficiency of machining. The main purpose of optimizing the cutting parameters is to reduce tool wear and improve the accuracy and surface quality of machined workpieces.
In summary, in order to improve the precision of numerical control machine tools, the reasonable selection of machine tool parts, the adjustment and maintenance of machine tool parts, and the improvement of the structure and optimization of cutting parameters are all indispensable. In addition, the use of encoder feedback technology can also help improve the accuracy of the machine tool.
