CN102853056A - Correction arc bevel gear supporting automobile differential mechanism - Google Patents
Correction arc bevel gear supporting automobile differential mechanism Download PDFInfo
- Publication number
- CN102853056A CN102853056A CN2012103115722A CN201210311572A CN102853056A CN 102853056 A CN102853056 A CN 102853056A CN 2012103115722 A CN2012103115722 A CN 2012103115722A CN 201210311572 A CN201210311572 A CN 201210311572A CN 102853056 A CN102853056 A CN 102853056A
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- Prior art keywords
- bevel gear
- automobile differential
- correction
- differential mechanism
- gear
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Abstract
The invention discloses a correction arc bevel gear supporting an automobile differential mechanism, which comprises a planet gear and a half shaft gear engaged with each other by arc teeth. The arc tooth correction parameters of the planet gear and the half shaft gear are as follows: the helical angle is 10-100, the pressure angle is 22.50-250, and the addendum coefficient is 0-0.8. The arc teeth almost are flat, straight, short and low and are separated from moulds without barriers after precision forging by using the parameter correction design. The correction arc bevel gear is processed by using the precision forging forming technology so as to greatly shorten the manufacturing time, reduce the manufacturing cost, further promote supporting application of the automobile differential mechanism, and improve the transmission quality of the automobile differential mechanism.
Description
Technical field
The present invention relates to a kind of bevel gear, specifically, the present invention relates to the supporting correction spiral bevel gear of a kind of suitable automobile differential, the curved tooth of this gear is through revising design, and easy demoulding during finish forge belongs to metal pattern pressing formation technical field.
Background technique
Traditional automobile differential forms box of tricks by two differential gears, two planetary pinions and planet carrier.Supporting differential gear and planetary pinion are straight bevel gear, and be succinct because of the straight-tooth flank of tooth, adopts study on precision forging technology can realize producing in enormous quantities.However, there is certain structural imperfection in the flank of tooth of straight bevel gear, and greatest drawback is that straight bevel gear engagement is the contact of full-depth tooth upper thread, and circular tooth contact is to foozle, alignment error sensitivity relatively, easily produces EDGE CONTACT and worsens transmission quality.In order to improve the transmission quality of automobile differential, the industry adopts the axial modification technology to improve the meshing quality of straight bevel gear usually, namely on the flank of tooth along tooth depth, the correction of the flank shape of tooth length direction, the flank of tooth becomes " crowned teeth " after correction of the flank shape.But axial modification mode and profiling quantity are difficult to determine in the trial-manufacturing process, need to detect and could finally determine by several times trial cut method and meshing quality.Along with high speed, heavy-load automobile improve the requirement of transmission quality, the differential mechanism of equipped " crowned teeth " does not reach usage requirement.Spiral Bevel Gear Transmission is Local Instantaneous point contact in theory, and the engagement contact ratio is large, and is insensitive to foozle, alignment error, stable drive, and it is supporting that this category feature is particularly suitable for automobile differential.The spiral bevel gear curved tooth structure characteristic of conventional design is the solid surface structure, there is the practical problem of demoulding difficulty in forging, has seriously restricted supporting in automobile differential of spiral bevel gear.Spiral bevel gear can be realized accurate manufacturing with cutting working method, but the worker duration, manufacture cost is large, and it is supporting equally also to be not suitable for automobile differential.
Summary of the invention
The present invention is mainly for the practical problem of the difficult demoulding of spiral bevel gear of conventional design, propose a kind of correction spiral bevel gear of supporting automobile differential, it is little that this gear and the spiral bevel gear curved tooth of conventional design are compared helix angle, and pressure angle is large, the high coefficient of tooth item is little, easy demoulding during finish forge.
The present invention is achieved through the following technical solutions technical goal.
The correction spiral bevel gear of supporting automobile differential, it comprises planetary pinion and the differential gear that is meshed with curved tooth.Its improvements are: the curved tooth corrected parameter of described planetary pinion and differential gear is helix angle 1
0～10
0, pressure angle 22.5
0～25
0And addendum coefficient 0.7～0.8.
In the said structure, need to adjust helix angle, pressure angle and addendum coefficient according to concrete tooth profile parameter as the gear with curved teeth of planetary pinion and differential gear.The adjustment of helix angle need to take into account the size of bearing size, contact ratio of directly depanning, axial force.Whether pressure angle is mainly considered direct depanning favourable.Addendum coefficient will consider whether tooth top comes to a point and the size of contact ratio.
The present invention compared with prior art has following good effect:
1, the flank engagement of curved tooth is originally as the part contact, and profile of tooth correction design is easy, easily realization;
2, helix angle and the increase pressure angle by reducing curved tooth, and these improve the measure of curved-surface structure to adopt short tooth system, so that the demoulding is accessible behind the spiral gear finish forge, is conducive to use study on precision forging technology and realizes in enormous quantities, low-cost production;
Be the instantaneous point contact when 3, revising Spiral Bevel Gear Transmission, be conducive to improve smoothness of operation and the bearing capacity of transmission.
Description of drawings
Fig. 1 uses the planetary pinion of the present invention's making and differential gear forms transmission in automobile differential structural representation.
Fig. 2 is planetary pinion finish forge tooth mode structure enlarged diagram of the present invention, shows among the figure that the curved tooth structure is provided with obstacle to the demoulding.
Fig. 3 is differential gear finish forge tooth mode structure enlarged diagram of the present invention, shows among the figure that the curved tooth structure is provided with obstacle to the demoulding.
Embodiment
The below with reference to the accompanying drawings and in conjunction with the embodiments, the invention will be further described.
The spiral bevel gear of the supporting automobile differential shown in Fig. 1, it comprises planetary pinion and the differential gear that is meshed with curved tooth.The curved tooth corrected parameter of described planetary pinion 1 and differential gear 2 is helix angle 1
0～10
0, pressure angle 22.5
0～25
0And addendum coefficient 0.7～0.8.Planetary pinion 1 is 12 teeth in the present embodiment, and differential gear 2 is 18 teeth, and mating engagement is in automobile differential.In order to accomplish the accessible demoulding behind the finish forge, special with curved tooth by helix angle 1
0, pressure angle 25
0, addendum coefficient 0.775 is revised design.Owing to adopt above-mentioned parameter correction design, so that curved tooth is tending towards is straight, short short, can accomplish direct demold behind the finish forge.Revising spiral bevel gear processes with study on precision forging technology, when greatly reducing worker and manufacture cost, it is the instantaneous point contact when the most important thing is to revise Spiral Bevel Gear Transmission, smoothness of operation and the bearing capacity of transmission have been improved, be particularly suitable for the supporting application of automobile differential, be conducive to improve the transmission quality of automobile.
Claims (1)
1. the correction spiral bevel gear of a supporting automobile differential, it comprises planetary pinion (1) and the differential gear (2) that is meshed with curved tooth; It is characterized in that: the curved tooth corrected parameter of described planetary pinion (1) and differential gear (2) is helix angle 1
0～10
0, pressure angle 22.5
0～25
0And addendum coefficient 0.7～0.8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103115722A CN102853056A (en) | 2012-08-29 | 2012-08-29 | Correction arc bevel gear supporting automobile differential mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103115722A CN102853056A (en) | 2012-08-29 | 2012-08-29 | Correction arc bevel gear supporting automobile differential mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102853056A true CN102853056A (en) | 2013-01-02 |
Family
ID=47399909
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012103115722A Pending CN102853056A (en) | 2012-08-29 | 2012-08-29 | Correction arc bevel gear supporting automobile differential mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102853056A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103216583A (en) * | 2013-04-24 | 2013-07-24 | 山东洪海集团有限公司 | Full-teeth contacting transmission type tri-vision billboard |
| CN107654610A (en) * | 2017-09-29 | 2018-02-02 | 洛阳华冠齿轮股份有限公司 | A kind of non-involute flank of tooth, few tooth high-strength direct bevel gear and its processing method |
| CN110083939A (en) * | 2019-04-28 | 2019-08-02 | 南京理工大学 | Pure electric vehicle differential gear correction of the flank shape optimization method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090188345A1 (en) * | 2008-01-29 | 2009-07-30 | Bawks James R | Differential holdout ring arrangement |
| CN101526129A (en) * | 2009-02-27 | 2009-09-09 | 南京航空航天大学 | Helical involute gear and processing method thereof |
| US20100227728A1 (en) * | 2009-03-04 | 2010-09-09 | James Robert Bawks | Locking differential |
-
2012
- 2012-08-29 CN CN2012103115722A patent/CN102853056A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090188345A1 (en) * | 2008-01-29 | 2009-07-30 | Bawks James R | Differential holdout ring arrangement |
| CN101526129A (en) * | 2009-02-27 | 2009-09-09 | 南京航空航天大学 | Helical involute gear and processing method thereof |
| US20100227728A1 (en) * | 2009-03-04 | 2010-09-09 | James Robert Bawks | Locking differential |
Non-Patent Citations (2)
| Title |
|---|
| 方媛: "弧齿锥齿轮精锻成形工艺及其数值模拟", 《中国优秀硕士学位论文全文数据库工程科技》 * |
| 杜勇: "摩托车倒挡弧齿锥齿轮分流冷挤压工艺研究", 《中国优秀硕士学位论文全文数据库工程科技》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103216583A (en) * | 2013-04-24 | 2013-07-24 | 山东洪海集团有限公司 | Full-teeth contacting transmission type tri-vision billboard |
| CN107654610A (en) * | 2017-09-29 | 2018-02-02 | 洛阳华冠齿轮股份有限公司 | A kind of non-involute flank of tooth, few tooth high-strength direct bevel gear and its processing method |
| CN110083939A (en) * | 2019-04-28 | 2019-08-02 | 南京理工大学 | Pure electric vehicle differential gear correction of the flank shape optimization method |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C05 | Deemed withdrawal (patent law before 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130102 |