CN101413577B - Helical gear and gap eliminating structure - Google Patents
Helical gear and gap eliminating structure Download PDFInfo
- Publication number
- CN101413577B CN101413577B CN200810234599.XA CN200810234599A CN101413577B CN 101413577 B CN101413577 B CN 101413577B CN 200810234599 A CN200810234599 A CN 200810234599A CN 101413577 B CN101413577 B CN 101413577B
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- helical gear
- helical
- helical teeth
- gap
- gear
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- Gear Transmission (AREA)
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 mechanical transmission, specifically, is the helical gear that can eliminate gear transmission gap.
Technical background
Helical gear driven load is large, and stable drive is conventional drive mechanism.But due to many factors such as the accuracy of manufacturing of gear, mechanical assembly precision, assembly technology requirements, gear transmission unavoidably has drive gap.Drive gap has affected transmission accuracy, and then can affect manufacture, machining accuracy.But now also have, effectively do not eliminate drive gap to improve the anti-backlash mechanism of transmission accuracy.
Summary of the invention
The object of this invention is to provide a kind of helical gear gap-eliminating structure of eliminating Helical gear Transmission gap.
This helical gear gap-eliminating structure, is divided into split type two-part by helical gear along helical gear cross section, makes these two-part elastic element of separation vertically while being arranged on normality between two-part, and these two-part become power transmission in the circumference and connect.
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 first portion is called the first helical teeth, and the helical teeth on second portion is called the second helical teeth.When the helical gear that contains this gap that disappears and other helical gear (we are referred to as the 3rd helical gear) engagement, because the existence of elastic element is separated first and second part vertically, this just causes the different side on the first helical teeth and the second helical teeth (to that is to say from different helical teeth side engagements on the 3rd helical gear respectively, when the left surface of the first helical teeth contacts with the right flank of a helical teeth on the 3rd helical gear, the right flank of the second helical teeth contacts with the left surface of another one helical teeth on the 3rd helical gear; Or, when the right flank of the first helical teeth contacts with the left surface of a helical teeth on the 3rd helical gear, the left surface of the second helical teeth contacts with the right flank of another one helical teeth on the 3rd helical gear), so eliminated helical teeth on the 3rd helical gear and the drive gap between helical gear helical teeth of the present invention.First portion and second portion because becoming power transmission in the circumference with second portion, first portion be connected, so all can be distinguished transmitting torque.
As improvement, more reliably, can not produce torsion radially, described elastic element is not a plurality of when making first portion, second portion separated vertically, 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 helical gear axis is passed in the hole of opening on described two-part simultaneously.In order to make it possible to transmit larger moment of torsion, best described rotating shaft is a plurality of, is distributed on helical gear circumferential.
Accompanying drawing explanation
Fig. 1 is the structural representation of helical gear of the present invention and the engagement of other helical gear.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
Referring to Fig. 1, the helical gear 7 that contains gap-eliminating structure and the 3rd helical gear 3 mesh schematic representations of other normal configuration.Helical gear 7 comprises along helical gear cross section and becomes split type first portion 1, second portion 2.Helical teeth in first portion 1 is the first helical teeth 4, and the helical teeth on second portion 2 is the second helical teeth 5.Second portion 2 contains wheel hub 8.Circumferential direction along helical gear 7 is evenly equipped with respectively six counterbores 9,10 on first portion 1, second portion 2, and the countersink region 11 of counterbore 9 is relative with counterbore 10 countersink region 12.At the interior Helix Cylinder Compressible Spring 13 that arranges of relative countersink region 11,12, Helix Cylinder Compressible Spring makes first portion 1, second portion 2 separated vertically when normality.Six bolts 14 are respectively through counterbore 9, Helix Cylinder Compressible Spring 13, counterbore 10, and 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 respectively six through holes 19,20 on first portion 1, second portion 2, in six through holes 19, be provided with straight-line rolling element secondary, the fixed block 25 of straight-line rolling element pair is connected with second portion through through hole 20, and the moving part 21 of straight-line rolling element pair is arranged in 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 the 3rd helical gear 3 engagement, Helix Cylinder Compressible Spring is separated first and second part vertically, this just causes the different side on the first helical teeth 4 and the second helical teeth 5 to mesh from helical teeth sides different on the 3rd helical gear respectively, that is to say, when the left surface of the first helical teeth 4 contacts with the right flank of a helical teeth on the 3rd helical gear, the right flank of the second helical teeth 5 contacts with the left surface of another one helical teeth on the 3rd helical gear; Or, when the right flank of the first helical teeth 4 contacts with the left surface of a helical teeth on the 3rd helical gear, the left surface of the second helical teeth 5 contacts with the right flank of another one helical teeth on the 3rd helical gear), so eliminated helical teeth 6 on the 3rd helical gear and the drive gap between helical gear helical teeth of the present invention.
When first portion 1 is when the moment of torsion that is subject to helical gear 3 rotates, by the secondary moving part of straight-line rolling element, drive second portion 2 to rotate together.When second portion 2 is when the moment of torsion that is subject to helical gear 3 rotates, by the secondary fixed block of straight-line rolling element, drive first portion 1 to rotate together.
Claims (2)
1. helical gear gap-eliminating structure, is characterized in that: helical gear is divided into split type two-part along helical gear cross section, makes these two-part elastic element of separation vertically while being arranged on normality between two-part, these two-part become power transmission in the circumference and connect; Described elastic element is spiral cylinder spring, have a plurality of, be distributed on helical gear circumferentially; The structure that described power transmission connects is: be at least onely parallel to helical gear rotating shaft and be passed in the hole of opening on described helical gear two-part simultaneously, described rotating shaft is a plurality of, be distributed on helical gear circumferentially.
2. a helical gear, is characterized in that: it contains gap-eliminating structure claimed in 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 CN101413577A (en) | 2009-04-22 |
| CN101413577B true 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) |
Families Citing this family (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 |
| CN105864397B (en) * | 2016-05-03 | 2018-01-12 | 常州机电职业技术学院 | Anti-backlash helical gear |
-
2008
- 2008-11-24 CN CN200810234599.XA patent/CN101413577B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN101413577A (en) | 2009-04-22 |
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| C10 | Entry into substantive examination | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140319 Termination date: 20141124 |
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| EXPY | Termination of patent right or utility model |