Large-stroke high-precision micro-control servo feeding system and control method

A servo feed, micro control technology, applied in general control systems, control/regulation systems, program control, etc., can solve problems such as large friction, restricting the application of sliding screw pairs, and achieve high-precision results

Pending Publication Date: 2019-12-10
SHANDONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Compared with the ball screw pair, the sliding screw pair has simple processing and low manufacturing cost, but because there is no ball between the screw and the nut, the contact between the screw and the nut is surface contact, and the friction is large. Generally,

Method used

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  • Large-stroke high-precision micro-control servo feeding system and control method
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  • Large-stroke high-precision micro-control servo feeding system and control method

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Embodiment Construction

[0039] It should be pointed out that the following detailed description is exemplary and intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0040] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or combinations thereof;

[0041] For the convenience of description, if the words "up", "down", "left" and "right" appear in the present i...

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Abstract

The invention discloses a large-stroke high-precision micro-control servo feeding system and a control method. The large-stroke high-precision micro-control servo feeding system comprises two servo motors, a sliding lead screw pair, a displacement detection device, a position feedback module, a CNC motion controller and a PC. The first servo motor drives the lead screw to rotate, the second servomotor drives the nut to rotate, and the first servo motor and the second servo motor are respectively driven by a set of servo driving system; the workbench is fixedly installed on a nut bearing of the sliding lead screw pair, and the displacement detection device detects the displacement of the workbench and sends a detected displacement signal to the position feedback module. The position feedback module feeds back the signal to the CNC motion controller; the system also includes a motion controller that is used for sending instructions of motion of the first servo motor and the second servomotor to servo driving systems of the two servo motors according to motion requirements given by the PC; therefore, micro-feeding control over the workbench is achieved through the combination of thetwo rotary motions of the sliding lead screw and the nut.

Description

technical field [0001] The invention relates to the technical field of precision machining, belongs to the field of ultra-precision numerical control machine tools and high-end electromechanical equipment ultra-precision motion control technology, and specifically relates to a large-stroke high-precision micro-control servo feed system. Background technique [0002] Precision and ultra-precision machining technology has become the technical support for the development of national defense and high-tech. With the upgrading of products, many high-tech products have higher and higher requirements for the machining accuracy of parts. Therefore, the performance of precision and ultra-precision machine tools Indicator requirements are also gradually increasing. However, one of the key technical bottlenecks of this kind of high-precision motion control is how to make the tool or workpiece be accurately, stably and reliably realize micro-feed control in the process of processing. ...

Claims

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Application Information

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IPC IPC(8): G05B19/414B23Q5/40
CPCB23Q5/40G05B19/4141G05B2219/36346
Inventor 冯显英孙德鹏杜付鑫李沛刚李慧王兆国
Owner SHANDONG UNIV
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