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Industrial-application type active magnetic suspension machine tool motor spindle

An industrial application, magnetic levitation technology, applied in the direction of cutting tools for lathes, metal processing machinery parts, shafts, etc., to achieve the effect of reducing friction, no need for lubrication, and increasing speed

Inactive Publication Date: 2008-09-03
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the bearing support technology for electric spindles in the existing technology at home and abroad, all electric spindles for industrial applications use rolling bearings, sliding bearings or air suspension bearings, etc., and there is no electric spindle supported by magnetic suspension bearings.

Method used

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  • Industrial-application type active magnetic suspension machine tool motor spindle
  • Industrial-application type active magnetic suspension machine tool motor spindle
  • Industrial-application type active magnetic suspension machine tool motor spindle

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Experimental program
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Embodiment Construction

[0017] A preferred embodiment of the present invention is:

[0018] see figure 1 , the bearing technical scheme of the electric spindle of the industrially applied active magnetic levitation machine tool consists of radial magnetic bearing 1, thrust magnetic bearing 2, spindle 4, sensors 8, 9, power amplifier 6 and controller 7, etc. to form a closed-loop feedback control system, figure 2 A block diagram showing the working principle of the active magnetic suspension bearing and its main shaft position control system: the dynamic performance of the system is analyzed by the electromechanical coupling dynamics theory of the active magnetic suspension supported flexible rotor system, and the obtained optimal control parameters are actively input to the controller 7, When the system is working, the reference zero value of the main shaft 4 is given, and the displacement signals of the main shaft 4 are measured by sensors 8 and 9 in the radial and axial directions. When the exter...

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Abstract

The invention relates to an industrial applied electro-spindle of driving magnetic suspension machine tool, containing spindle with thrust disc, where the spindle is covered with two rotor iron cores and supported by two radial magnetic bearings, two sides of the thrust disc are supported by two thrust magnetic bearings, respectively, and it is set with spindle position control system. It can maximumly heighten rotary speed, reduce friction, prolong life, enlarge working range, etc.

Description

technical field [0001] The invention relates to an electric spindle applied to a high-grade numerical control machine tool, in particular to an electric spindle of an industrially applied active magnetic levitation machine tool. Background technique [0002] With the development and progress of science and technology, high-speed cutting has developed rapidly in the field of metal processing in aerospace, automobile and motorcycle, mold and other machinery manufacturing industries. Efficiency and surface processing accuracy, in many cases, the replacement of grinding by milling and grinding by turning has been realized, such as hard milling and hard turning of molds as the final finishing process. In order to achieve high-speed cutting, in addition to the high-speed feed system and high-speed cutting tool system of the machine tool, the high-speed and high-precision of the machine tool spindle is another necessary condition. Adopting high-speed electric spindle technology is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C16/26B23B27/14B23B19/02B23Q5/10F16C32/04
CPCF16C32/0493F16C2380/26
Inventor 张钢汪希平李松生张建生杨新洲吴国庆
Owner SHANGHAI UNIV