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Leverage for reducing gear rack transmission backlash

A lever mechanism, rack and pinion technology, applied in the direction of transmission device, friction transmission device, belt/chain/gear, etc., can solve the problems of increasing processing costs and installation costs, reduce backlash, facilitate installation, and ensure reliability Effects on sex and safety

Inactive Publication Date: 2009-09-16
HARBIN ENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Due to manufacturing and installation errors, as well as to compensate for thermal deformation and provide space for storing lubricating oil, the rack and pinion meshing needs to leave a minimum backlash; the traditional method is to use double-plate gears to control the gap to reduce the rack and pinion meshing The method of empty return, this method of reducing empty return increases the processing cost and installation cost, and the double-plate gear must be adjusted regularly according to the usage; another common method is to design and process the gear shaft of the installed gear as an eccentric shaft, through Control the relative position of the gear and the rack to control the backlash, so as to effectively reduce the backlash, but the structure of the eccentric shaft is difficult to ensure the mutual position for a long time under the condition of variable load

Method used

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  • Leverage for reducing gear rack transmission backlash
  • Leverage for reducing gear rack transmission backlash
  • Leverage for reducing gear rack transmission backlash

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Embodiment Construction

[0008] The present invention is described in more detail below in conjunction with accompanying drawing example:

[0009] combine Figure 1-Figure 3 , the present invention uses the compression spring to minimize the distance between the gear mounted on the lever and the rack meshed with it, so as to achieve the purpose of reducing backlash. The main components of the present invention include: lever bracket 1, column pin 2, small garden nut 3, lever 4, motor 5, bolt 6, catch 7, compression spring 8, moving body 9, gear 10, rack 11, rack Mounting body 12 , screw group 13 , slider 14 , slide rail 15 , screw group 16 , screw group 17 , reducer 18 , screw group 19 , washer 20 , screw 21 and screw group 22 . The lever support 1 is fixed on the mobile body 9 through the screw group 22; the mobile body 9 is fixed with the slider 14 through the screw group 17, the slide rail 15 is fixed with the rack mounting body 12 through the screw group 16, and the slide rail 15 and the slider 1...

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PUM

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Abstract

The invention provides leverage for reducing gear rack transmission backlash, comprising a rack, a gear, a gear transmission motor and a reducer. The invention is characterized in that a lever bracket is fixedly arranged on a moving body; one end of a lever is installed on the lever bracket via a plug; the gear is installed on an output shaft of the reducer which is installed in the middle part of the lever; the gear transmission motor is connected with the reducer; a through hole is arranged on the other end of the lever; screws are arranged in the through hole in series; a lever compression spring is sheathed on the screw and the lever is fixed on the moving body. The lever is arranged on the moving body of the invention and the assembly of the motor, the reducer and the gear is arranged on the lever; the lever only has one rotational degree of freedom around the plug axes and the gear installed on the lever is pressed toward the rack by the compression spring at the other end of the lever, therefore, the distance between the gear and the rack is shortened to the minimum, thereby reaching the aim of reducing the backlash of mutually meshed gear and rack and finally playing a role in reducing the backlash.

Description

(1) Technical field [0001] The invention relates to a lever mechanism, in particular to a lever mechanism for reducing backlash in rack and pinion drives. (2) Background technology [0002] Due to manufacturing and installation errors, as well as to compensate for thermal deformation and provide space for storing lubricating oil, the rack and pinion meshing needs to leave a minimum backlash; the traditional method is to use double-plate gears to control the gap to reduce the rack and pinion meshing The method of empty return, this method of reducing empty return increases the processing cost and installation cost, and the double-plate gear must be adjusted regularly according to the usage; another common method is to design and process the gear shaft of the installed gear as an eccentric shaft, through The relative position of the gear and the rack is controlled to control the backlash, thereby effectively reducing backlash, but the structure of the eccentric shaft is diffic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H19/04
Inventor 王立权赵亚楠杜宏旺
Owner HARBIN ENG UNIV
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