Five-axis linkage CNC machine tools have been well known for a long time and are widely used in production. In our impression, "the more axes represent the more powerful the machine tool", the five-axis machine tool can realize the pentahedral machining of the workpiece in one clamping, so can the nine-axis machine tool be more powerful?
Special special equipment has outstanding advantages.
Machining centers with more than five axes belong to special special equipment, and they generally process certain types of workpieces in a targeted manner. The most representative nine-axis five-linkage machine tool is the turning-milling compound machining center. Compared with conventional CNC machining technology, compound machining has outstanding advantages.
1. Shorten the product manufacturing process chain and improve production efficiency. Turning and milling combined processing can complete all or most of the processing procedures at one time, thereby greatly shortening the product manufacturing process chain. In this way, on the one hand, the production assistance time caused by the change of the installation card is reduced, and the manufacturing cycle and waiting time of the tooling fixture are also reduced, which can significantly improve the production efficiency.
2. Reduce the number of clamping and improve processing accuracy. The reduction in the number of card loading avoids the accumulation of errors due to the conversion of positioning benchmarks. At the same time, most of the current turning-milling composite processing equipment has the function of online detection, which can realize the in-position detection and precision control of key data in the manufacturing process, thereby improving the processing accuracy of the product.
3. Reduce floor space and reduce production costs. Although the price of a single unit of turning-milling composite processing equipment is relatively high, the overall fixed assets can be effectively reduced due to the shortening of the manufacturing process chain and the reduction of equipment required for products, as well as the reduction in the number of fixtures, workshop area and equipment maintenance costs. The cost of investment, production operation and management.
The key to nine-axis five linkage is "five linkage".
Having talked about so many advantages of the nine-axis five-linkage machine tool, is there really a leap forward in comparing nine-axis with five-axis?
Generally speaking, a five-axis five-link machining center can realize all-round processing of all sides of the workpiece, but the surface where the workpiece is clamped on the worktable cannot be machined, and some special workpieces need to be machined at this time. It is necessary to remove the workpiece from the clamping position and turn it over to reinstall it. In order to ensure the accuracy of repeated clamping, an additional set of mechanical devices is needed to ensure this "positioning error of repeated clamping". An additional set of mechanical devices means more motion axes. Generally, the extra axes are auxiliary axes and will not participate in the cutting motion. Therefore, this type of machine tool with more than five axes is called "X-axis five-linkage machine tool" (X is greater than 5), for example, 7-axis 5-linkage Machine tool, 9-axis 5-linkage machine tool...
Five-axis schematic diagram (three linear coordinates and two rotating coordinates)
High-end five-axis linkage machine tools are more widely used
The five-axis linkage CNC machine tool can use three linear motions and two rotational parallel motions to complete the CNC machining of any spatial surface. One-time clamping, multi-face automatic processing, one-time forming of complex curved surfaces, tight integration. At present, five-axis linkage CNC machine tools are widely used in industries such as automobiles, medical care, 5G, and molds.
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