CN202441868U - Gear box capable of automatically regulating gear mesh clearance - Google Patents
Gear box capable of automatically regulating gear mesh clearance Download PDFInfo
- Publication number
- CN202441868U CN202441868U CN2011204445576U CN201120444557U CN202441868U CN 202441868 U CN202441868 U CN 202441868U CN 2011204445576 U CN2011204445576 U CN 2011204445576U CN 201120444557 U CN201120444557 U CN 201120444557U CN 202441868 U CN202441868 U CN 202441868U
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- China
- Prior art keywords
- gear box
- gear
- eccentric sleeve
- eccentric bushing
- shaft
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Abstract
The utility model provides a gear box capable of automatically regulating gear mesh clearance and the gear box mainly comprises an intermediate shaft, a bearing, an eccentric sleeve, a torsional spring and a box body. The gear box is characterized in that the bearing of the intermediate shaft is arranged in the eccentric sleeve, the eccentric sleeve can move along circumference driven by the torsional spring and rotation of the eccentric sleeve can automatically regulate distance a between the intermediate shaft and a first shaft and b between the intermediate shaft and a third shaft. The gear box can achieve to automatically regulate clearance, and because of the self locking effect, the eccentric sleeve cannot reverse and regulating of clearance is independent of the effect of load size when resistance appears.
Description
Technical field
The present invention relates to the mechanized equipment manufacturing industry, particularly the numerical control machine tool industry.
Background technique
Because numerical control machine tool feeding and transmission system precision prescribed are higher, so general engagement system is difficult to satisfy required precision, the past, the thin tooth side set adjustment methods of spring or shimming that adopt were eliminated the back lash more, but each defectiveness.Adopt the thin tooth side set adjustment method of spring owing to need to rely on the spring force transferring power, so can not be used to the bigger occasion of loading; And adopt the thin tooth side set adjustment rule of shimming can not eliminate the gap automatically, and need the dismounting gearbox to regulate, waste time and energy.So be applied on feeding and the transmission system of numerically controlled lathe unsatisfactoryly, especially under the precision prescribed condition with higher, defective is more obvious.
Summary of the invention
The object of the present invention is to provide a kind of gearbox of automatic adjustment gear backlash, its gap adjustment does not receive the influence of payload.Realize that the technological scheme that above-mentioned purpose adopts is: a kind of gearbox of automatic adjustment gear backlash; Mainly comprise jack shaft, bearing, eccentric bushing; Torque spring, casing; It is characterized in that midship shaft bearing is installed in the eccentric bushing, eccentric bushing drives through torque spring can be along circumferential movement, the rotation of eccentric bushing can regulate automatically jack shaft and first wheelbase a and with the 3rd wheelbase b.This device can realize regulating automatically the gap, and because self-locking effect meets obstructions, and eccentric bushing can not reverse, institute's gap adjustment does not receive the influence of payload.
The gearbox of a kind of automatic adjustment gear backlash provided by the invention is mainly reflected in when gear engagement produces the gap; Torque spring 4 drives eccentric bushing 1 and rotates; Reduce jack shaft 2 and first wheelbase a and with the 3rd wheelbase b; Thereby realize the gear meshing gap on gear and first, the 3rd of adjustment jack shaft automatically, and the not resilience that meets obstructions.
Description of drawings
Fig. 1 is an automatic backlash adjust system example block diagram of the present invention.
Fig. 2 is a gear engagement structural representation of the present invention.
Embodiment
Referring to Fig. 1,2; The gearbox of a kind of automatic adjustment gear backlash provided by the present invention; Its exemplary mechanism critical piece comprises first 6, the 3rd spool 7, jack shaft 2, bearing 3, eccentric bushing 1, torque spring 4, casing 5 etc., and midship shaft bearing 3 is installed in the eccentric bushing 1; Eccentric bushing 1 drives through torque spring 4 can be along circumferential movement, and the rotation of eccentric bushing 1 can be regulated jack shaft 2 and first 6 wheelbase a and and the 3rd 7 wheelbase b automatically.When gear wear produced the gap, torque spring drove eccentric bushing and is rotated counterclockwise, and makes the jack shaft position move down, reduce jack shaft 2 and first wheelbase a and with the 3rd wheelbase b, thereby realize reducing the purpose of back lash and even elimination back lash.
Its middle (center) bearing belongs to standard piece, can select for use according to load condition; The machining manufacture of all the other eccentric bushings, torque spring, axle, gear, casing etc. belongs to known technology, so do not explain herein.
Claims (1)
1. automatic gearbox of adjustment gear backlash; Mainly comprise jack shaft, bearing, eccentric bushing; Torque spring, casing; It is characterized in that midship shaft bearing is installed in the eccentric bushing, eccentric bushing drives through torque spring can be along circumferential movement, the rotation of eccentric bushing can regulate automatically jack shaft and first wheelbase a and with the 3rd wheelbase b.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204445576U CN202441868U (en) | 2011-11-11 | 2011-11-11 | Gear box capable of automatically regulating gear mesh clearance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204445576U CN202441868U (en) | 2011-11-11 | 2011-11-11 | Gear box capable of automatically regulating gear mesh clearance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202441868U true CN202441868U (en) | 2012-09-19 |
Family
ID=46823320
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204445576U Expired - Fee Related CN202441868U (en) | 2011-11-11 | 2011-11-11 | Gear box capable of automatically regulating gear mesh clearance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202441868U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109435544A (en) * | 2018-12-20 | 2019-03-08 | 深圳市小怪兽教育科技有限公司 | A kind of mechanical arm plotting unit |
-
2011
- 2011-11-11 CN CN2011204445576U patent/CN202441868U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109435544A (en) * | 2018-12-20 | 2019-03-08 | 深圳市小怪兽教育科技有限公司 | A kind of mechanical arm plotting unit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120919 Termination date: 20131111 |