It is generally believed that the five-axis CNC machine tool system is the only means to solve the processing of impellers, blades, marine propellers, heavy generator rotors, steam turbine rotors, large diesel engine crankshafts, etc. It is a high-tech, high-precision machine tool specially used for processing complex curved surfaces. The machine tool system has a decisive influence on a country's aviation, aerospace, military, scientific research, precision instruments, high-precision medical equipment and other industries.

In addition, what are the advantages of five-axis linkage machine tools?

The use of five-axis linkage machine tool makes it easy to clamp the workpiece. There is no need for special fixtures during processing, which reduces the cost of fixtures, avoids multiple clamping, and improves mold processing accuracy. Using five-axis technology to process molds can reduce the number of fixtures used. In addition, because the five-axis simultaneous machine tool can save many special tools in processing, the tool cost is reduced. The five-axis linkage machine tool can increase the effective cutting edge length of the tool, reduce the cutting force, improve the tool life and reduce the cost during processing. Using the five-axis linkage machine tool to process the mold can quickly complete the mold processing, fast delivery, better guarantee the processing quality of the mold, make the mold processing easier, and make the mold modification easier. In traditional mold processing, vertical machining centers are generally used to complete the milling of workpieces. With the continuous development of mold manufacturing technology, some weaknesses of the vertical machining center itself are becoming more and more obvious. Modern mold processing generally uses ball-end milling cutters. The benefits of ball-end milling cutters in mold processing are very obvious. However, if a vertical machining center is used, the linear speed of the bottom surface is zero, so the finish of the bottom surface is very poor. , If the four- and five-axis linkage machine tool processing technology is used to process the mold, the above shortcomings can be overcome.

Development trend

The first is the use of linear motor drive technology. After more than ten years of development, linear motor technology has become very mature. The problem that linear motors are susceptible to interference and large heat generation has been solved. The positioning technology of linear motors not only stops quickly during high-speed movement, but also some machine tool manufacturers use damping technology to solve them. The advantages of linear motors are linear drive, no transmission chain, no wear, and no backlash, so they can achieve the best positioning accuracy. Linear motors are highly dynamic, with accelerations exceeding 2g. The use of linear motor drive also has the characteristics of high reliability and maintenance-free.

The second is the use of dual-drive technology. For a wider worktable or gantry type, if an intermediate drive is used, the actual driving force cannot be guaranteed to be in the center, and it is easy to cause tilting, resulting in poor dynamic performance. With dual drives, dual gratings, and one drive module, the dynamic performance is perfect. One drive command, the two drives work at the same time, the grating ruler detects whether the two points are balanced, and if they are not balanced, they are balanced by different commands. Of course, the development of five-axis linkage machine tool technology is far more than that, and many technologies will be reflected in future machine tool products.

Conclusion

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