CN101413577A - Helical gear and gap eliminating structure - Google Patents
Helical gear and gap eliminating structure Download PDFInfo
- Publication number
- CN101413577A CN101413577A CNA200810234599XA CN200810234599A CN101413577A CN 101413577 A CN101413577 A CN 101413577A CN A200810234599X A CNA200810234599X A CN A200810234599XA CN 200810234599 A CN200810234599 A CN 200810234599A CN 101413577 A CN101413577 A CN 101413577A
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- China
- Prior art keywords
- helical gear
- gap
- helical
- eliminating structure
- helical teeth
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Abstract
The invention provides a helical gear backlash elimination structure for eliminating the transmission backlash of a helical gear, as well as the helical gear with the backlash elimination structure. The backlash elimination structure of the helical gear divides the helical gear into two split-type parts along the cross section of the helical gear, an elastic component which causes the two parts to be separated along the axial direction at the normal state is arranged between the two parts, and the two parts are in force transmission connection along the circumferential direction.
Description
Technical field
The present invention relates to the helical gear in the mechanical transmission, specifically, is the helical gear that can eliminate the gear transmission gap.
Technical background
Helical gear driven load is big, and stable drive is the drive mechanism of using always.But because multiple factors such as the accuracy of manufacturing of gear, mechanical assembly precision, assembly technology requirements, gear transmission unavoidably has drive gap.Drive gap has influenced transmission accuracy, and then can influence manufacturing, machining accuracy.Do not eliminate drive gap effectively to improve the anti-backlash mechanism of transmission accuracy but now also have.
Summary of the invention
The purpose of this invention is to provide a kind of helical gear gap-eliminating structure of eliminating the helical gear drive gap.
This helical gear gap-eliminating structure is divided into split type two-part with helical gear along the helical gear cross section, makes the elastic element that these two-part separate vertically, these two-part become power transmission in the circumference when being arranged on normality between two-part and connects.
The present invention provides the helical gear that contains above-mentioned anti-backlash mechanism simultaneously.
For the convenience of its working principle is described, we are becoming split type two-part to divide another name first portion, second portion, and the helical teeth in the first portion is called first helical teeth, and the helical teeth on the second portion is called second helical teeth.When helical gear that contains this crack that disappears and other helical gear (we are referred to as the 3rd helical gear) engagement, because the existence of elastic element makes first and second part be separated vertically, this just cause on first helical teeth and second helical teeth different sides respectively with the 3rd helical gear on different helical teeth sides engagements (that is to say, when the right flank of a helical teeth on the left surface of first helical teeth and the 3rd helical gear contacted, the right flank of second helical teeth then contacted with the left surface of another one helical teeth on the 3rd helical gear; Perhaps, when the left surface of a helical teeth on the right flank of first helical teeth and the 3rd helical gear contacts, the left surface of second helical teeth then contacts with the right flank of another one helical teeth on the 3rd helical gear), so promptly eliminated helical teeth on the 3rd helical gear and the drive gap between the helical gear helical teeth of the present invention.Because first portion becomes power transmission in the circumference with second portion and is connected, so first portion and second portion all can be distinguished transmitting torque.
As improvement, more reliably, can not produce reversing radially when making that first portion, second portion separate vertically, described elastic element is a plurality of, be distributed on helical gear circumferentially.Described elastic element can be spiral cylinder spring.
As improvement, the structure that described power transmission connects is: at least one rotating shaft that is parallel to the helical gear axis is passed in the hole of being opened on described two-part simultaneously.In order to make it possible to transmit bigger moment of torsion, best described rotating shaft is a plurality of, is distributed on helical gear circumferential.
Description of drawings
Fig. 1 is the structural representation of helical gear of the present invention and the engagement of other helical gear.
Embodiment
The present invention is further detailed explanation below in conjunction with the drawings and specific embodiments.
Referring to Fig. 1, contain the helical gear 7 of gap-eliminating structure and the 3rd helical gear 3 mesh schematic representations of other normal configuration.Helical gear 7 comprises along the helical gear cross section and becomes split type first portion 1, second portion 2.Helical teeth in the first portion 1 is first helical teeth 4, and the helical teeth on the second portion 2 is second helical teeth 5.Second portion 2 contains wheel hub 8.Circumferential direction along helical gear 7 is evenly equipped with six counterbores 9,10 respectively on first portion 1, second portion 2, the countersink region 11 of counterbore 9 is relative with counterbore 10 countersink region 12.In relative countersink region 11,12 spiral cylinder pressure spring 13 is set, the spiral cylinder pressure spring makes first portion 1, second portion 2 separate vertically when normality.Six bolts 14 pass counterbore 9, spiral cylinder pressure spring 13, counterbore 10 respectively, and the bolt end is screwed with nut 15.Screw bolt and nut restriction first portion and second portion 2 are in axial separable ultimate range.
Circumferential direction along helical gear 7 is evenly equipped with six through holes 19,20 respectively on first portion 1, second portion 2, in six through holes 19, be provided with straight-line rolling element pair, the fixed block 25 of straight-line rolling element pair passes through hole 20 and is connected with second portion, and the moving part 21 of straight-line rolling element pair is arranged in the through hole 19.The moving part 21 of straight-line rolling element pair can move with respect to the fixed block 25 of straight-line rolling element pair on helical gear axial direction.Straight-line rolling element pair belongs to existing apparatus.
When helical gear 7 and 3 engagements of the 3rd helical gear, the spiral cylinder pressure spring makes first and second part be separated vertically, this just cause on first helical teeth 4 and second helical teeth 5 different sides respectively with the 3rd helical gear on different helical teeth side engagements, that is to say, when the right flank of a helical teeth on the left surface of first helical teeth 4 and the 3rd helical gear contacted, the right flank of second helical teeth 5 then contacted with the left surface of another one helical teeth on the 3rd helical gear; Perhaps, when the left surface of a helical teeth on the right flank of first helical teeth 4 and the 3rd helical gear contacts, the left surface of second helical teeth 5 then contacts with the right flank of another one helical teeth on the 3rd helical gear), so promptly eliminated helical teeth 6 on the 3rd helical gear and the drive gap between the helical gear helical teeth of the present invention.
When first portion 1 when the moment of torsion that is subjected to helical gear 3 rotates, drive second portion 2 by the secondary moving part of straight-line rolling element and rotate together.When second portion 2 when the moment of torsion that is subjected to helical gear 3 rotates, drive first portion 1 by the secondary fixed block of straight-line rolling element and rotate together.
Claims (6)
1. helical gear gap-eliminating structure is characterized in that: helical gear is divided into split type two-part along the helical gear cross section, makes the elastic element that these two-part separate vertically, these two-part become power transmission in the circumference when being arranged on normality between two-part and connect.
2. gap-eliminating structure according to claim 1 is characterized in that: described elastic element is a plurality of, is distributed on helical gear circumferential.
3. gap-eliminating structure according to claim 1 is characterized in that: described elastic element is a spiral cylinder spring.
4. gap-eliminating structure according to claim 1 is characterized in that: the structure that described power transmission connects is: at least one rotating shaft that is parallel to the helical gear axis is passed in the hole of being opened on described two-part simultaneously.
5. gap-eliminating structure according to claim 4 is characterized in that: described rotating shaft is a plurality of, is distributed on helical gear circumferential.
6. helical gear, it is characterized in that: it contains the described gap-eliminating structure of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810234599.XA CN101413577B (en) | 2008-11-24 | 2008-11-24 | Helical gear and gap eliminating structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810234599.XA CN101413577B (en) | 2008-11-24 | 2008-11-24 | Helical gear and gap eliminating structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101413577A true CN101413577A (en) | 2009-04-22 |
| CN101413577B CN101413577B (en) | 2014-03-19 |
Family
ID=40594246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810234599.XA Expired - Fee Related CN101413577B (en) | 2008-11-24 | 2008-11-24 | Helical gear and gap eliminating structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101413577B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101975248A (en) * | 2010-10-15 | 2011-02-16 | 北京伊贝格机械有限公司 | Backlash planetary retarding mechanism |
| CN104595460A (en) * | 2014-12-25 | 2015-05-06 | 惠州市华阳多媒体电子有限公司 | Gear assembly capable of eliminating transmission gaps |
| CN105864396A (en) * | 2016-05-01 | 2016-08-17 | 保定标正机床有限责任公司 | Gear clearance removing mechanism |
| CN105864397A (en) * | 2016-05-03 | 2016-08-17 | 常州机电职业技术学院 | Clearance-eliminating skewed-tooth cylindrical gear |
| CN106151481A (en) * | 2015-03-12 | 2016-11-23 | 盐城工业职业技术学院 | Rack barrel drive gap eliminating machine |
-
2008
- 2008-11-24 CN CN200810234599.XA patent/CN101413577B/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101975248A (en) * | 2010-10-15 | 2011-02-16 | 北京伊贝格机械有限公司 | Backlash planetary retarding mechanism |
| CN104595460A (en) * | 2014-12-25 | 2015-05-06 | 惠州市华阳多媒体电子有限公司 | Gear assembly capable of eliminating transmission gaps |
| CN106151481A (en) * | 2015-03-12 | 2016-11-23 | 盐城工业职业技术学院 | Rack barrel drive gap eliminating machine |
| CN105864396A (en) * | 2016-05-01 | 2016-08-17 | 保定标正机床有限责任公司 | Gear clearance removing mechanism |
| CN105864397A (en) * | 2016-05-03 | 2016-08-17 | 常州机电职业技术学院 | Clearance-eliminating skewed-tooth cylindrical gear |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101413577B (en) | 2014-03-19 |
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Granted publication date: 20140319 Termination date: 20141124 |
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