CN105317967A - Hardened half shaft with sun wheel - Google Patents
Hardened half shaft with sun wheel Download PDFInfo
- Publication number
- CN105317967A CN105317967A CN201410332484.XA CN201410332484A CN105317967A CN 105317967 A CN105317967 A CN 105317967A CN 201410332484 A CN201410332484 A CN 201410332484A CN 105317967 A CN105317967 A CN 105317967A
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- China
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- semiaxis
- sun gear
- sun wheel
- half shaft
- thickness
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- 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.)
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Abstract
The invention relates to the technical field of two-stage speed reduction driving axles with wheel side speed reducers, in particular to a hardened half shaft with a sun wheel. The hardened half shaft with the sun wheel comprises a half shaft body, the sun wheel arranged at one end of the half shaft body and a spline arranged at the other end of the half shaft body, the half shaft body and the sun wheel are integrally formed, and a hardening layer is arranged on the gear surface of the sun wheel. The hardened half shaft with the sun wheel is characterized in that the thickness of the tooth root part of the hardening layer is at least 1.5 mm. According to the hardened half shaft with the sun wheel, the thickness of the tooth root part of the hardening layer of the sun wheel is designed to be 1.5 mm or higher, and compared with a sun wheel with the thickness of the tooth root part of the hardening layer smaller than 1.5 mm, the bending strength is higher.
Description
Technical field
The double reduction that the present invention relates to wheel rim deceleration device drives vehicle bridge technical field, refers in particular to a kind of for driving the hardening type band sun gear semiaxis of vehicle bridge.
Background technique
Vehicle transmission semiaxis is the strength member of automobile transmitting torque, and automobile sun gear is the important component part of wheel reductor.When double reduction automobilism, the moment of torsion that motor exports passes to automobile axle shaft through main reducing gear, be delivered on wheel reductor by automobile axle shaft again, wheel reductor transfers torque on wheel, propelling vehicle advances and falls back, when starting or go up a slope, moment of torsion is very large, particularly braking or traveling are on the road surface of jolting, operating conditions is more severe, this just requires that material therefor has enough resistance to flexures, due to the restriction of solar wheeling tooth root architecture and current processing technology, tooth root portion hardened layer is made to become the weak part of whole gear hardened layer, namely tooth root case depth is the whole the most shallow place of tooth, and tooth root case depth affects shock resistance and the bending fatigue strength of whole gear.
Summary of the invention
The object of the invention is to overcome above-mentioned the deficiencies in the prior art, a kind of hardening type band sun gear semiaxis is provided.
Technical problem to be solved by this invention realizes by the following technical solutions.
A kind of hardening type band sun gear semiaxis, comprise semiaxis, be arranged at the sun gear of semiaxis one end and be arranged at the spline of the semiaxis the other end, described semiaxis and sun gear integrally formed, there is quench-hardened case at solar wheeling tooth wheel surface, it is characterized in that: described quench-hardened case is at least 1.5 millimeters at the thickness in tooth root portion.The present invention is by the quench-hardened case Thickness Design of solar wheeling tooth root more than 1.5 millimeters, and comparing tooth root portion quench-hardened case thickness, not reach the sun gear resistance to flexure of this thickness higher.
As preferably, the thickness of described quench-hardened case in tooth root portion is 3.1 ~ 3.5 millimeters.For heavy-duty car, the moment of torsion that sun gear bears comparatively general car is larger, so need thicker tooth root portion quench-hardened case, 3.1 ~ 3.5 millimeters of the technical program are suitable scope.
As preferably, described semiaxis is provided with knock hole with one end of external splines.Adopt the technical program, utilize ejector pin to fix half shaft end, ensure that the stability of semiaxis installation and positioning structure.
As preferably, the material of described semiaxis is 50CrVA.50CrVA has good mechanical property and technology capability, and hardening capacity is higher.
As preferably, described sun gear thickness is 60 millimeters.
As preferably, described half shaft length is 1115 millimeters.
Accompanying drawing explanation
Fig. 1 is plan view of the present invention.
Fig. 2 is Fig. 1 left view.
In figure: 1, semiaxis, 2, sun gear, 3, spline, 4, knock hole, 5, quench-hardened case.
Embodiment
For the technical characterstic of this programme can be clearly demonstrated, with reference to the accompanying drawings the specific embodiment of the invention is described further below.
As shown in Figure 1 and Figure 2, a kind of hardening type band sun gear semiaxis, comprise that length is the semiaxis 1 of 1115 millimeters, the thickness that is arranged at semiaxis one end is the sun gear 2 of 60 millimeters and be arranged at spline 3 and the knock hole 4 of the semiaxis the other end, described semiaxis 1 and sun gear 2 integrally formed, have quench-hardened case 5 at sun gear 2 gear surface, the thickness of described quench-hardened case 5 in tooth root portion is 3.1 ~ 3.5 millimeters.
By reference to the accompanying drawings embodiments of the invention are elaborated above, but the present invention is not limited to above-described embodiment, in the ken that those of ordinary skill in the art possess, various change can also be made under the prerequisite not departing from present inventive concept.
Claims (6)
1. a hardening type band sun gear semiaxis, comprise semiaxis, be arranged at the sun gear of semiaxis one end and be arranged at the spline of the semiaxis the other end, described semiaxis and sun gear integrally formed, there is quench-hardened case at solar wheeling tooth wheel surface, it is characterized in that: described quench-hardened case is at least 1.5 millimeters at the thickness in tooth root portion.
2. hardening type band sun gear semiaxis according to claim 1, is characterized in that: the thickness of described quench-hardened case in tooth root portion is 3.1 ~ 3.5 millimeters.
3. hardening type band sun gear semiaxis according to claim 1, is characterized in that: described semiaxis is provided with knock hole with one end of external splines.
4. according to the hardening type band sun gear semiaxis described in claim 1 ~ 4, it is characterized in that: the material of described semiaxis is 50CrVA.
5., according to the hardening type band sun gear semiaxis described in claim 1 ~ 4, it is characterized in that: described sun gear thickness is 60 millimeters.
6. hardening type band sun gear semiaxis according to claim 5, is characterized in that: described half shaft length is 1115 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410332484.XA CN105317967A (en) | 2014-07-14 | 2014-07-14 | Hardened half shaft with sun wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410332484.XA CN105317967A (en) | 2014-07-14 | 2014-07-14 | Hardened half shaft with sun wheel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105317967A true CN105317967A (en) | 2016-02-10 |
Family
ID=55245999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410332484.XA Pending CN105317967A (en) | 2014-07-14 | 2014-07-14 | Hardened half shaft with sun wheel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105317967A (en) |
-
2014
- 2014-07-14 CN CN201410332484.XA patent/CN105317967A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160210 |