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Boring, milling machine primed by straight-line driven portal shaped in zero phase on beam of magnetic suspension

A technology of linear drive and control method, which is applied in the field of numerical control, and can solve problems such as friction and heat generation, reduction of motion pair precision, damage to micro-feed, high-precision, high-response feed performance requirements, etc.

Inactive Publication Date: 2009-03-11
SHENYANG POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in this kind of gantry mobile machining center, there is friction between the moving parts and the stationary guide rail, which reduces the accuracy of the kinematic pair, wears and generates heat, and deforms the precision parts
Especially in the case of low-speed micro-feeding, due to the nonlinearity between friction and motion speed, the so-called inchworm motion mode or chaotic limit cycle phenomenon may occur, which seriously damages the micro-feeding, high-precision, high-response Ability to Feed Performance Requirements

Method used

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  • Boring, milling machine primed by straight-line driven portal shaped in zero phase on beam of magnetic suspension
  • Boring, milling machine primed by straight-line driven portal shaped in zero phase on beam of magnetic suspension
  • Boring, milling machine primed by straight-line driven portal shaped in zero phase on beam of magnetic suspension

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Embodiment Construction

[0118] A preferred embodiment of the present invention see figure 1 , Figure 11 and Figure 12.

[0119] Such as figure 1As shown, the gantry mobile processing machine driven by the magnetic levitation beam linear motor part includes a servo unit (including servo motor and sensor, servo driver), box-type beam, X-direction linear motor, guide unit (including motor, sensor and driver), beam suspension Air gap, U-shaped integrated bed, worktable, main suspension electromagnet, compensation electromagnet, spindle unit (spindle drive motor and sensor, spindle driver) and tool, the main suspension electromagnet coil is connected with the inner extension of the beam end , the armature is on the bed, and the coils of the main suspension electromagnet are divided into two rows on the left and right, which act as a suspension beam. The connection between the compensation electromagnet and the main suspension electromagnet is similar, that is, the main suspension electromagnet is conne...

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Abstract

A movable boring-milling machine is composed of a magnetically suspended transverse beam, a straight-line motor driven gantry, movable machine-tool and control circuit unit including the control circuit for the synchronous drive of dual straight-line motos and the control circuit for controlling the height of transverse beam. Its control method includes the synchronous control to dual straight-line motor by improved master-slave synchronous drive, and controlling the suspended height of said transverse beam.

Description

technical field [0001] The invention belongs to the technical field of numerical control, and in particular relates to a zero-phase linear drive gantry mobile boring and milling machine for a magnetic levitation beam and a control method. Background technique [0002] Among the large-scale processing equipment, the gantry mobile CNC machining center is one of the most representative machine tools. The synchronous control of the CNC machine tool is to use a set of AC servo motors on both sides of the column, which is the so-called dual-motor drive scheme. Self-acceleration, velocity and displacement, the so-called double detection method. The beam of the gantry machine tool is usually driven by two lead screws. When the tool holder or the spindle box is not at the center point of the beam, the force on the screw is asymmetrical, so the beam will tilt. However, in this kind of gantry mobile machining center, there is friction between the moving parts and the stationary guide...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23Q5/00B23P23/02G05B19/18G05D3/12
Inventor 郭庆鼎赵希梅孙宜标王丽梅杨霞
Owner SHENYANG POLYTECHNIC UNIV
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