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Ball screw linear driver for built-in permanent magnet synchronous motor

A technology of permanent magnet synchronous motors and linear drives, which is applied in the direction of electric components, electrical components, electromechanical devices, etc., can solve the problems of low precision, complex structure, large size, etc., and achieve improved motion accuracy, high motion accuracy, and reduced volume effect

Inactive Publication Date: 2012-11-14
CHENGDU LAINTEM MOTORS CONTROL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the shortcomings of the existing linear drive with complex structure, large size and low precision, and provide a ball screw linear drive with a built-in permanent magnet synchronous motor

Method used

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  • Ball screw linear driver for built-in permanent magnet synchronous motor
  • Ball screw linear driver for built-in permanent magnet synchronous motor
  • Ball screw linear driver for built-in permanent magnet synchronous motor

Examples

Experimental program
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Embodiment

[0031] Such as figure 1 As shown, the ball screw linear drive with built-in permanent magnet synchronous motor includes a stator 4, a rotor 5 coaxial with the stator 4, and a rotor shaft 7. The rotor shaft 7 is a hollow cylinder, and the rotor 5 is fixed on the rotor shaft 7. , the rotor 5 is completely wrapped by the stator 4, the front end of the rotor shaft 7 is connected with a lead screw nut 15, the inner cavity of the rotor shaft 7 is provided with a lead screw 6, and the lead screw 6 cooperates with the lead screw nut 15. The front end of the rotor shaft 7 and the screw nut 15 are also provided with a front bearing installation shaft 3 and a transition bushing 12, through which the rotor shaft 7 and the front bearing installation shaft 3 are connected as a whole, Both the front bearing installation shaft 3 and the transition shaft sleeve 12 are hollow structures, the front end of the rotor shaft 7 is connected with the transition shaft sleeve 12, the transition shaft sl...

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PUM

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Abstract

The invention discloses a ball screw linear driver for a built-in permanent magnet synchronous motor. The ball screw linear driver comprises a stator (4) as well as a rotor (5) and a rotor shaft (7) which are coaxial with the stator (4), wherein the rotor shaft (7) is a hollow cylinder; the rotor (5) is fixed on the rotor shaft (7); the rotor (5) is totally packed by the stator (4); the front end of the rotor shaft (7) is connected with a lead screw nut (15); the rear end of the rotor shaft (7) is provided with a position sensor (9); a lead screw (6) is arranged in the inner cavity of the rotor shaft (7) and is matched with the lead screw nut (15); and two ends of the rotor (5) are provided with gimbal rings (11). The ball screw linear driver for the built-in permanent magnet synchronous motor has the advantages of small size, high operating precision, high reliability and simple structure.

Description

technical field [0001] The invention relates to a linear driver, in particular to a ball screw linear driver with a built-in permanent magnet synchronous motor. Background technique [0002] Traditional linear drives generally use a rotary servo motor to drive the screw nut pair to achieve linear motion of the screw, or use a hydraulic / pneumatic system to drive a hydraulic / pneumatic cylinder to achieve linear motion. [0003] The linear actuator that uses a rotary servo motor to drive the screw nut pair has the advantages of high driving precision and good controllability, but its complex structure and large dimensions make its maintenance difficult and its use is limited. [0004] A linear actuator that uses a hydraulic / pneumatic system to drive a hydraulic / pneumatic cylinder to achieve linear motion needs to be equipped with a hydraulic / air pipeline and a hydraulic / air source. It is used in occasions that require high motion precision. Contents of the invention [0005...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K7/06
Inventor 何勤张振东张闯陈奇志
Owner CHENGDU LAINTEM MOTORS CONTROL TECH
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