Electromotor type is designed with the machine tool

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  • source:BAGANZ CNC Machining
Can linear electromotor make machining center better? Say exactly, can it improve the dynamic tigidity of the machine tool? A research of machine of dark essence of Japan of machine tool manufacturer makes clear, the answer is affirmative, but a bit want special attention. Use linear motor alone, not be the most effective method that increases stability. As to dynamic tigidity, design of change machine tool may be more important. Kazuyuki Hiramoto of general manager of dark essence machine provided the data of next graphs. Digital representing goes up in an experiment machine tool, with with need not linear electromotor, with with need not alleged " in drive of centre of gravity " (or " DCG " ) ' devise an idea, undertake trying the test result that move. Specific those who measure is machine tool shift and the oscillatory amount that after stopping, cause. The electromotor that relative point is each axis works how to cause a few vibration, but likelihood more vibration are the place that the force place that comes from those electromotor points to. The electromotor apt of each axis on machining center brings to bear on the focus that its force does not adopt mobile package, and a side of deflection of apt thrust augmentation or other a side. Dr. Hiramoto says, the principle photograph that runs as intuitionistic as all of us understanding so is violated. Namely, should move when a clog, we try to be pushed in the center. The problem of the drive of centre of gravity that does not adopt machining center is, machine tool in a sense says, it is slimy. Although use a hand,also can make the machine tool is out of shape 10 micron. Force of linear electromotor axes does not drive the slight twist of machine tool component through the center, can bring about vibration, the likelihood affects the exterior quality of the spare parts and cutting tool life severely. Machining center user encounters this kind of vibration when start gradually and stopping sometimes. The DCG machine tool of this company tries to be driven through centre of gravity. The machine tool uses ball guide screw, the challenge that realizes this idea is, the central line that passes machining center may install ball guide screw without the place. Main shaft has the central place of the machine tool, also may be workbench of a circumgyrate. Below the condition that in the other of these machine tools main component violates in the center, DCG machine tool uses two ball guide screw, each edge uses guide screw of a ball, consequently join forces still passes a center. CNC Milling