CN202431906U - Gear hub of automobile speed changing box - Google Patents
Gear hub of automobile speed changing box Download PDFInfo
- Publication number
- CN202431906U CN202431906U CN2011205732296U CN201120573229U CN202431906U CN 202431906 U CN202431906 U CN 202431906U CN 2011205732296 U CN2011205732296 U CN 2011205732296U CN 201120573229 U CN201120573229 U CN 201120573229U CN 202431906 U CN202431906 U CN 202431906U
- Authority
- CN
- China
- Prior art keywords
- plane
- splined hole
- speed changing
- gear
- automobile speed
- 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.)
- Expired - Fee Related
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- Gears, Cams (AREA)
Abstract
The utility model relates to the technical field of gear hubs, in particular to a gear hub of an automobile speed changing box. The gear hub of the automobile speed changing box comprises a hub body, a center splined hole, an external gear, a front plane and a rear plane, wherein the front plane and the rear plane are 0-0.06mm in depth of parallelism, and the verticality between the front plane and the center splined hole and the verticality between the rear plane and the center splined hole are 0-0.07mm. When the gear hub of the automobile speed changing box is used, not only can raw materials be saved but also the production efficiency can be increased, therefore, the quality requirement is met and the production cost is reduced. Moreover, the structure is simple, the design is reasonable and the manufacturing cost is low.
Description
Technical field
The utility model relates to tooth hub technical field, particularly a kind of automobile gearbox tooth hub.
Background technique
The Along with people's living standard improves constantly, and the demand of automobile is also constantly increased, and the cost performance of automobile is as a big standard of consumer choice, and the Cost And Performance of auto parts machinery is also constantly proposed new demand.Guaranteeing under the product quality premise that how producing cheap accessory has become the much-talked-about topic that automobile industry is discussed.
The perpendicularity of parallelism and plane, front and back and center splined hole is had relatively high expectations between the plane, front and back of automobile gearbox tooth hub.Receive the restriction of present equipment processing ability; Can't guarantee product the regulation parallelism under produce; A plane on existing tooth hub two planes when producing is processed with the certain taper angle man-hour adding, and this angle is 1 °～5 °, otherwise the tooth hub very easily cracks when producing; Therefore two surfaces up and down of finished product tooth hub spare are not levels, but have certain taper.This kind structure not only can increase the powder amount of using, but also will carry out cutting to the tooth hub of this tapering when producing; This tapering is machined away, make two plane parallel degree in the size requirement scope, increased production process like this; Reduce manufacturing efficiency, cause the rising of cost.
So need the production technology of existing automobile gearbox tooth hub is improved further.
The model utility content
The purpose of the utility model is defective and the deficiency to existing technology, provides a kind of simple in structure, a kind of automobile gearbox tooth hub reasonable in design, easy to use.
For realizing above-mentioned purpose, the technological scheme that the utility model adopts is:
The described a kind of automobile gearbox tooth hub of the utility model; It comprises hub body, center splined hole, external gear, frontal plane and back plane; The parallelism of said frontal plane and back plane is 0～0.06mm, and the perpendicularity of said frontal plane and back plane and center splined hole is 0～0.07mm.
Further, the internal gear of said center splined hole has identical hardness with the external gear surface.
Further, the coaxality of the top circle of said internal gear and external gear is 0～0.08mm.
After adopting said structure; The utility model beneficial effect is: the described a kind of automobile gearbox tooth hub of the utility model; Its hub body, center splined hole, external gear, frontal plane and back plane are to adopt the compression moulding of powder metallurgy one; Make the parallelism of frontal plane and back plane be controlled at 0～0.06mm, and the perpendicularity of frontal plane and back plane and center splined hole is controlled at 0～0.07mm; Cancelled the following process process, both practiced thrift raw material, improved manufacturing efficiency again, thereby reduced production costs.The utlity model has simple in structure, reasonable in design, low cost of manufacture.
Description of drawings
Fig. 1 is the structural representation of the utility model;
Fig. 2 is the sectional structure chart of the A-A of Fig. 1.
Description of reference numerals:
1, center splined hole; 11, internal gear; 2, hub body; 3, external gear;
4, frontal plane; 5, back plane.
Embodiment
Below in conjunction with accompanying drawing the utility model is further described.
Like Fig. 1, shown in Figure 2; The described a kind of automobile gearbox tooth hub of the utility model; It comprises hub body 2, center splined hole 1, external gear 3, frontal plane 4 and back plane 5; It is characterized in that: the parallelism of said frontal plane 4 and back plane 5 is 0～0.06mm, and the perpendicularity of said frontal plane 4 and back plane 5 and center splined hole 1 is 0～0.07mm.Reach above parallelism and perpendicularity and need utilize special mould, and in pressing process, adopt the numerical control hydraulic control pressurer system, to guarantee the accuracy of each face pressure.
The internal gear 11 of said center splined hole 1 has identical hardness with external gear 3 surfaces.The coaxality of the top circle of said internal gear 11 and external gear 3 is 0～0.08mm.Can guarantee that internal gear 11 has identical material capability with external gear 3 with the numerical control hydraulic control pressurer system; The machining accuracy and the numerical control hydraulic control pressurer system of the control mould capable of using of coaxality are realized.
When adopting the powder metallurgy moulding, cancelled the following process process, both practiced thrift raw material, improved manufacturing efficiency again, thereby reduced production costs with the utility model.In addition, this is simple in structure, reasonable in design, low cost of manufacture.
The above only is the preferred embodiments of the utility model, so all equivalences of doing according to the described structure of the utility model patent claim, characteristic and principle change or modify, includes in the utility model patent claim.
Claims (3)
1. automobile gearbox tooth hub; It comprises hub body (2), center splined hole (1), external gear (3), frontal plane (4) and back plane (5); It is characterized in that: the parallelism of said frontal plane (4) and back plane (5) is 0～0.06mm, and said frontal plane (4) and back plane (5) are 0～0.07mm with the perpendicularity of center splined hole (1).
2. a kind of automobile gearbox tooth hub according to claim 1 is characterized in that: the internal gear (11) of said center splined hole (1) has identical hardness with external gear (3) surface.
3. a kind of automobile gearbox tooth hub according to claim 2 is characterized in that: the coaxality of the top circle of said internal gear (11) and external gear (3) is 0～0.08mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205732296U CN202431906U (en) | 2011-12-26 | 2011-12-26 | Gear hub of automobile speed changing box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205732296U CN202431906U (en) | 2011-12-26 | 2011-12-26 | Gear hub of automobile speed changing box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202431906U true CN202431906U (en) | 2012-09-12 |
Family
ID=46781352
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205732296U Expired - Fee Related CN202431906U (en) | 2011-12-26 | 2011-12-26 | Gear hub of automobile speed changing box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202431906U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105351478A (en) * | 2014-08-22 | 2016-02-24 | 迅达汽车工业股份有限公司 | Combined gear |
-
2011
- 2011-12-26 CN CN2011205732296U patent/CN202431906U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105351478A (en) * | 2014-08-22 | 2016-02-24 | 迅达汽车工业股份有限公司 | Combined gear |
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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: 20120912 Termination date: 20121226 |