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Slide block mechanism for reducing transmission backlash of rack and pinion

A technology of rack and pinion and carriage, which is applied to transmission parts, belts/chains/gears, mechanical equipment, etc., and can solve the problems of increasing processing costs and installation costs

Inactive Publication Date: 2009-09-09
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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  • Slide block mechanism for reducing transmission backlash of rack and pinion
  • Slide block mechanism for reducing transmission backlash of rack and pinion
  • Slide block mechanism for reducing transmission backlash of rack and pinion

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Embodiment Construction

[0011] The present invention is described in more detail below in conjunction with accompanying drawing example:

[0012] combine Figure 1-Figure 3 , the main components of the present invention include: motor 1, reducer 2, bracket 3, moving body 4, slider 5, rack mounting body 6, rack 7, pressing plate 8, pressing plate 9, gear 10, carriage 11, guide Rod 12, compression spring 13, screw group 14, screw group 15, screw group 16, screw group 17, screw group 18, screw group 19, screw group 20, screw 21, pressure piece 22 and slide rail 23.

[0013] Install the pressure piece 22 on the output shaft of the reducer 2 through the screw 21, fix the gear 10 on the output shaft of the reducer 2 through the key and the pressure piece 22, install the gear 10 on the output shaft of the reducer 2, and make the gear 10 opposite The speed reducer has only one degree of freedom of rotation around its axis of rotation; the speed reducer 2 is fixed on the carriage 11 through the screw group 2...

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PUM

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Abstract

The invention provides a slide block mechanism for reducing transmission backlash of rack and pinion. The mechanism comprises a pinion, a rack, a decelerator and a motor, the pinion is mounted on the output shaft of the decelerator, the motor or the decelerator is connected with the decelerator, the decelerator is mounted on the slide block, the slide block is glidingly mounted on a bracket and has one movement freedom degree only, the bracket is mounted on a movable member, and a compression spring is provided between the slide block and the bracket. The invention provides a new method, which is safe and reliable and is convenient for mounting, for reducing lateral clearance of the rack and the pinion; the compression spring is employed to minimize the distance between the pinion, which is mounted on the output shaft of the decelerator on the slide block, and the rack, which is meshed with the pinion, thus realizing the objective of reducing the backlash.

Description

(1) Technical field [0001] The invention relates to a mechanism for reducing the backlash of gears and racks connected to the output shaft of a reducer. (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 difficul...

Claims

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Application Information

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IPC IPC(8): F16H57/12
Inventor 王立权赵亚楠杜宏旺
Owner HARBIN ENG UNIV
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