CN102466020A - Spiral gear - Google Patents
Spiral gear Download PDFInfo
- Publication number
- CN102466020A CN102466020A CN2010105338514A CN201010533851A CN102466020A CN 102466020 A CN102466020 A CN 102466020A CN 2010105338514 A CN2010105338514 A CN 2010105338514A CN 201010533851 A CN201010533851 A CN 201010533851A CN 102466020 A CN102466020 A CN 102466020A
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- CN
- China
- Prior art keywords
- helical gear
- helical
- gap
- spiral gear
- eliminating structure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- Gears, Cams (AREA)
- Gear Transmission (AREA)
Abstract
The invention provides a spiral gear clearance eliminating structure capable of eliminating transmission clearance of a spiral gear and the spiral gear comprising the clearance eliminating structure. The clearance eliminating structure of the spiral gear is characterized in that the spiral gear is divided into two split parts along the cross section of the spiral gear, an elastic element for separating the two parts in the axial direction in the normal state is arranged between the two parts, and the two parts form force transmission connection in the circumferential direction.
Description
Technical field
The present invention relates to a kind of helical gear, specifically, is the helical gear that can eliminate the gear transmission gap.
Technical background
A kind of 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.
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 between two-part, being arranged on normality 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 contacts, the right flank of second helical teeth then with the 3rd helical gear on the left surface of another one helical teeth contact; 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 with the 3rd helical gear on the right flank of another one helical teeth contact), so promptly eliminated helical teeth and the drive gap between the helical gear helical teeth of the present invention on the 3rd helical gear.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, said elastic element is a plurality of, be distributed on helical gear circumferentially.Said elastic element can be spiral cylinder spring.
As improvement, the structure that said 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 said two-part simultaneously.In order to make it possible to transmit bigger moment of torsion, best said 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
Below in conjunction with accompanying drawing and embodiment the present invention is done further detailed explanation.
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; It is secondary in six through holes 19, to be provided with the straight-line rolling element; The secondary fixed block 25 of straight-line rolling element passes through hole 20 and is connected with second portion, and the secondary moving part 21 of straight-line rolling element is arranged in the through hole 19.The secondary moving part 21 of straight-line rolling element can move by the fixed block 25 secondary with respect to the straight-line rolling element 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 contacts, the right flank of second helical teeth 5 then with the 3rd helical gear on the left surface of another one helical teeth contact; 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 with the 3rd helical gear on the right flank of another one helical teeth contact), so promptly eliminated helical teeth 6 and the drive gap between the helical gear helical teeth of the present invention on the 3rd helical gear.
When first portion 1 when the moment of torsion that receives helical gear 3 rotates, drive second portion 2 through the secondary moving part of straight-line rolling element and rotate together.When second portion 2 when the moment of torsion that receives helical gear 3 rotates, drive first portion 1 through the secondary fixed block of straight-line rolling element and rotate together.
Claims (6)
1. a 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 between two-part, being arranged on normality and connect.
2. gap-eliminating structure according to claim 1 is characterized in that: said elastic element is a plurality of, is distributed on helical gear circumferential.
3. gap-eliminating structure according to claim 1 is characterized in that: said elastic element is a spiral cylinder spring.
4. gap-eliminating structure according to claim 1 is characterized in that: the structure that said 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 said two-part simultaneously.
5. gap-eliminating structure according to claim 4 is characterized in that: said 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 |
---|---|---|---|
CN2010105338514A CN102466020A (en) | 2010-11-08 | 2010-11-08 | Spiral gear |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2010105338514A CN102466020A (en) | 2010-11-08 | 2010-11-08 | Spiral gear |
Publications (1)
Publication Number | Publication Date |
---|---|
CN102466020A true CN102466020A (en) | 2012-05-23 |
Family
ID=46069999
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN2010105338514A Pending CN102466020A (en) | 2010-11-08 | 2010-11-08 | Spiral gear |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN102466020A (en) |
-
2010
- 2010-11-08 CN CN2010105338514A patent/CN102466020A/en active Pending
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
DD01 | Delivery of document by public notice |
Addressee: Wang Fan Document name: Notification of Passing Preliminary Examination of the Application for Invention |
|
C06 | Publication | ||
PB01 | Publication | ||
DD01 | Delivery of document by public notice | ||
DD01 | Delivery of document by public notice |
Addressee: Wang Fan Document name: Notification that Application Deemed to be Withdrawn |
|
C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120523 |