Five-axis linkage machine tool product types and development trend

Five-axis linkage CNC machine tool is a machine tool with high technological content and high precision used to process complex surfaces. This machine tool system is for a country's aviation, aerospace, military, scientific research, precision equipment, high-precision medical equipment and other industries. Has a significant influence. Now, 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, turbine rotors, large-scale diesel crankshafts, and so on.

One, kind:

Five-axis linkage machine has vertical, horizontal and cradle type 2-axis NC worktable, NC worktable NC dividing head, NC worktable 90 axis, NC worktable 45B axis, NC worktable A axis, two-axis NC spindle, etc. Types of. The above-mentioned six categories and seven kinds of five-axis linkage methods all have their own characteristics. There is no way to say which one is better, but you can only say which type of five-axis machining your product is suitable for.

Second, advantages:

The use of five-axis linkage machines makes it easy to set up the workpiece. No special fixtures are needed during processing, which reduces the cost of fixtures, avoids multiple fixtures, and improves mold machining accuracy. The use of five-axis machining tools can reduce the number of fixtures used. In addition, because the five-axis linkage machine can eliminate many special tools during machining, tooling costs are reduced. The five-axis linkage machine tool can increase the effective cutting edge length of the tool during machining, reduce the cutting force, increase the service life of the tool, and reduce the cost. The use of five-axis linkage machine tool processing mold can quickly complete the mold processing, fast delivery, better guarantee the quality of the mold processing, make mold processing easier, and make mold modification easier. In the traditional mold processing, the vertical machining center is generally used to complete the milling of the workpiece. With the continuous development of mold manufacturing technology, some weaknesses of the vertical machining center itself have become increasingly apparent. Modern mold processing generally uses ball-end milling cutters for machining. The advantages of ball-end milling cutters in mold processing are obvious. However, if a vertical machining center is used, the linear velocity of the bottom surface is zero, so that the bottom surface finish is poor. If you use four or five axis linkage machine tool processing technology to mold, you can overcome the above deficiencies.

Third, the development trend:

1, the first is the use of linear motor drive technology. After more than 10 years of development, linear motor technology has been very mature. The problem that the linear motor has been developed and susceptible to interference and high heat generation has been solved, and the positioning technology of the linear motor is not only rapidly stopped during high-speed movement, but also applied to damping by some machine tool manufacturers. The advantages of the linear motor are linear drive, no drive chain, no wear, no backlash, so the best positioning accuracy can be achieved. The linear motor has a high dynamic, acceleration can exceed 2g. The use of linear motor drive also has high reliability and maintenance-free features.

2, followed by the use of dual-drive technology. For a wider table or gantry type, if an intermediate drive is used, the driving force cannot be guaranteed in the center, which tends to result in tilt, which results in poor dynamic performance. With dual drives, dual scales, and one drive module, dynamic performance is perfect. A drive command, dual-drive at the same time, the grating scale to detect whether the two points are balanced, if it is not balanced by different instructions to reach balance. Of course, the development of five-axis linkage machine tool technology is far more than this. Many technologies will be embodied in DMG's machine tool products.