Magnetic levitation motion stage provided with controllable excitation linear synchronous motors and used for vertical machining center

A vertical machining center and motion platform technology, which is applied to metal processing machinery parts, metal processing equipment, manufacturing tools, etc., can solve problems such as friction, and achieve the effects of simple platform structure, energy saving, and high reliability

CN105500032AInactive Publication Date: 2016-04-20SHENYANG POLYTECHNIC UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2016-04-20
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a magnetic levitation motion stage provided with controllable excitation linear synchronous motors and used for a vertical machining center. The magnetic levitation motion stage is characterized in that the magnetic levitation motion stage comprises a motion stage, a base, the controllable excitation linear synchronous motors, a levitation control system and a motion control system. The magnetic levitation motion stage has the advantages and effects that the electromagnetic thrust force is changed by adjusting the current of armature windings; the magnetic levitation forces are the unilateral magnetic pull generated between excitation magnetic poles on stators and rotor iron cores of the linear synchronous motors and are adjusted by adjusting the exciting current; the motion stage depends on the magnetic levitation forces generated by the two motors to operate and has the capacity of direct automatic levitation.
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Description

technical field

[0001] The invention relates to a motion platform, in particular to a magnetic levitation motion platform for a controllable excitation linear synchronous motor of a vertical machining center, belonging to the technical field of numerical control. Background technique

[0002] Friction is an important factor affecting the machining accuracy of vertical machining centers, and it is also a factor that causes wear and noise. Therefore, reducing or eliminating friction has become a technical bottleneck that restricts the performance of linear motion platforms of vertical machining centers. The linear motion platform of the traditional vertical machining center is mostly driven by a servo motor, driven by a precision ball screw and supported by a sliding guide rail. During high-speed machining, there is serious mechanical friction, which is prone to elastic deformation and dust, which seriously affects the accuracy and quality of the machining center. machine life...

Examples

Embodiment Construction

[0028] Below in conjunction with accompanying drawing, the present invention will be further described:

[0029] As shown in the figure, the present invention proposes a controllable excitation linear synchronous motor magnetic levitation motion platform for a vertical machining center. The magnetic levitation motion platform includes a motion platform 2, a base 3, a controllable excitation linear synchronous motor, and a levitation control system. 10 and a motion control system 11; the controllable excitation linear synchronous motor includes a stator core 1 and a mover core 12 that moves relative to the stator core 1 during use; an excitation winding 6 is arranged in the stator core 1; An armature winding 7 is provided; an auxiliary guide rail 4 and a long grating sensor 5 are arranged on the base; the motion platform 2 is connected with the base 3 through the auxiliary guide rail 4, and the motion platform 2 is suspended relative to the base 3 during use; the stator core 1 ...