In the past ten years, the advancement of drive technology and control systems has promoted the continuous innovation and performance improvement of the machining center structure. The application of electric spindles, linear motors, torque motors and rapid CNC systems has played a decisive role in improving the high speed, high dynamics and high machining accuracy of machining centers. In many structural innovations in mold processing machines, torque motors play a particularly important role. It is applied not only to the rotary and oscillating drives of the rotary table, but also to the swinging of the forked spindle head or the swinging and slewing drive of the spindle head, thereby constituting various types of five-axis machining centers. The application of the rotary and oscillating spindle heads provides technical support for the development of five-axis gantry high-speed precision milling machines for machining large molds.
In the future, further improvement of spindle speed, dynamic performance and stroke speed is still the focus of high-speed machining center development, which not only depends on the further development of drive technology and numerical control technology, but also depends on the development of lightweight components of machine tools and parallel machine tools. Development. It can be expected that in the next five years, the axial acceleration of high-speed machining centers or high-speed milling machines is expected to reach 3 to 4 g, and the rapid stroke speed of the coordinate axes reaches 100 to 140 m/min.
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