CN204851971U - Step axle - Google Patents
Step axle Download PDFInfo
- Publication number
- CN204851971U CN204851971U CN201520532191.6U CN201520532191U CN204851971U CN 204851971 U CN204851971 U CN 204851971U CN 201520532191 U CN201520532191 U CN 201520532191U CN 204851971 U CN204851971 U CN 204851971U
- Authority
- CN
- China
- Prior art keywords
- section
- internal spline
- diameter section
- main body
- axle
- 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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Abstract
The utility model discloses a step axle, comprising a main body, be equipped with the chamfer on the tip of each section of main part, be equipped with a diameter section, conical transition and the 2nd diameter section in the main part, conical transition and the 2nd diameter section's junction is provided with the trough radius the 2nd diameter section is close to and is equipped with protruding department radius on conical transition one side, one of main part is served and is equipped with the internal spline, and the internal spline constitutes by bellied key tooth is adjacent in proper order with recessed tooth's socket it is provided with the strengthening rib to correspond on the lateral wall of internal spline. The utility model discloses the edge of each section sets to the arc chord angle with it before thermal treatment, and the internal stress is difficult for focusing on the the edge of axle, can avoid the acute angle position probably to the fish tail of operating personnel and other spare parts in addition, add the strengthening rib, reinforcing main part intensity makes the axle can bear bigger torsion, the convenient connection of internal spline is installed, avoids the transmission shaft to rotate the in -process simultaneously and rocks, has satisfied people's user demand.
Description
Technical field
The utility model relates to a kind of Axle Parts, specifically a kind of Step Shaft.
Background technique
The kind of shaft forgings is a lot of in the prior art, and many metal shaft like members for transmission all need to heat-treat its surface in the process of processing.The surface of metal especially iron and steel is after Overheating Treatment, and the arrangement mode of its lattice tissue will change, and can produce the change of internal stress simultaneously.This internal stress can make the part after heat treatment produce distortion, and the edge of part can be made to occur crackle, described crackle will along with the prolongation of time, make the internal stress at other position of part surface can gradually to occur crackle position transfer, make crackle expand intensification gradually, finally can cause the fracture of axial workpiece.The edge of existing shaft forgings is designed to right angle or acuter angles mostly, and the shaft forgings of this structure, as after heat-treatment processing process, very easily occurs many crackles in its edge, and likely causes scrapping of part.Therefore, the structure to changing its edge before the axial workpiece needing to heat-treat again heat treatment is necessary; Axle adopts key to be connected with the connection of rotational parts usually, for convenience detach, but key connects has impact to the intensity of axle, also affects the centering of axle.
Model utility content
The purpose of this utility model is to provide a kind of dispersive stress, increases intensity, easy for installation, avoids the Step Shaft rocked, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the utility model provides following technological scheme:
A kind of Step Shaft, comprise main body, the end that described main body is each section is provided with chamfering, and described main body is except an end of axle or two end part, and the chamfering on all the other each section of ends is arc round angle; Described main body is provided with the first diameter section, tapering transition section and Second bobbin diameter section, tapering transition section is arranged between the first diameter section and Second bobbin diameter section, the joint of tapering transition section and Second bobbin diameter section is provided with recess radius, is provided with convex place radius in described Second bobbin diameter section on tapering transition section side; One end of described main body is provided with internal spline, internal spline is formed by the key tooth of projection is adjacent successively with recessed teeth groove, recessed teeth groove is formed between two adjacent key teeth, the key tooth of projection is formed between two recessed teeth groove, the central axis of internal spline and the central axis of main body overlap mutually, and on the outer side wall of described internal spline, correspondence is provided with stiffening rib.
Further: described recess radius is set to 15 ~ 40mm, convex place radius is set to 2 ~ 10mm.
Further: the key tooth of described internal spline is provided with 18 ~ 24, key tooth is involute tooth, and internal spline adopts cold hobbing to process.
Further: the cross section of described stiffening rib is semicircle.
Further: the height of described stiffening rib is 3 ~ 5mm.
Compared with prior art, the beneficial effects of the utility model are: its edge of each section is set to arc round angle by the utility model before heat treatment, the internal stress being distributed in its edge can be obtained the distribution of homogenization by this fillet, that is the edge Jian Chu that internal stress is not concentrated in part makes it crack, inorganic water-based quenching medium can be selected when quenching heat treatment, adopt the uniformity meeting of the lattice surface Tissue distribution of the shaft forgings after this medium quenching better, internal stress not easily focuses on the edge of shaft member, hardness can obviously increase, and can avoid acute angle position may to the scuffing of operator and other component, set up stiffening rib, strengthened main body intensity, enable axle bear larger torsion, improve its Applicable scope, the external splines of one end of Step Shaft and driving parts cover is merged engagement by internal spline, namely realizes the transmission of moment of torsion by the engagement of inside and outside spline, facilitates connection, avoid the situation of rocking in drive axis process simultaneously, meet the user demand of people.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of Step Shaft.
Fig. 2 is a kind of part-structure sectional view of Step Shaft.
Fig. 3 is the structural representation of internal spline in a kind of Step Shaft.
In figure: 1-main body, 2-stiffening rib, 3-convex place radius, 4-recess radius, 5-first diameter section, 6-tapering transition section, 7-Second bobbin diameter section, 8-internal spline, 9-teeth groove, 10-key tooth.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technological scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to figure, in the utility model embodiment, a kind of Step Shaft, comprise main body 1, the end of each section of described main body 1 is provided with chamfering, and described main body 1 is except an end of axle or two end part, chamfering on all the other each section of ends is arc round angle, the internal stress concentrating on shaft forgings edge can be disperseed by arc round angle, internal stress is distributed uniformly in its edge, avoids the generation of crackle; The utility model can select inorganic water-based quenching medium when quenching heat treatment, and adopt the uniformity meeting of the lattice surface Tissue distribution of the shaft forgings after this medium quenching better, internal stress not easily focuses on the edge of shaft member, and surface hardness can obviously increase.Described main body 1 is provided with the first diameter section 5, tapering transition section 6 and Second bobbin diameter section 7, tapering transition section 6 is arranged between the first diameter section 5 and Second bobbin diameter section 7, tapering transition section 6 is provided with recess radius 4 with the joint of Second bobbin diameter section 7, recess radius 4 is set to 15 ~ 40mm, on tapering transition section 6 side, convex place radius 3 is provided with in described Second bobbin diameter section 7, convex place radius 3 is set between 2 ~ 10mm, link position is excessively smooth, make internal stress not be concentrated in link position, the integral hardness of Step Shaft obviously increases, one end of described main body 1 is provided with internal spline 8, internal spline 8 is formed by the key tooth 10 of projection is adjacent successively with recessed teeth groove 9, recessed teeth groove 9 is formed between two adjacent key teeth 10, the key tooth 10 of projection is formed between two recessed teeth groove 9, the central axis of internal spline 8 and the central axis of main body 1 overlap mutually, the key tooth 10 of described internal spline 8 is provided with 18 ~ 24, key tooth 10 is involute tooth, internal spline 8 adopts cold hobbing to process, the external splines cover of one end of main body 1 and driving parts is merged engagement by internal spline 8, namely the transmission of moment of torsion is realized by the engagement of inside and outside spline, facilitate connection, avoid the situation of rocking in drive axis process simultaneously, meet the user demand of people, on the outer side wall of described internal spline 8, correspondence is provided with stiffening rib 2, and the cross section of described stiffening rib 2 is semicircle, and it is highly 3 ~ 5mm, and stiffening rib 2 strengthens main body 1 intensity, enables axle bear larger torsion, improves its Applicable scope.
To those skilled in the art, obvious the utility model is not limited to the details of above-mentioned one exemplary embodiment, and when not deviating from spirit of the present utility model or essential characteristic, can realize the utility model in other specific forms.Therefore, no matter from which point, all should embodiment be regarded as exemplary, and be nonrestrictive, scope of the present utility model is limited by claims instead of above-mentioned explanation, and all changes be therefore intended in the implication of the equivalency by dropping on claim and scope are included in the utility model.Any reference character in claim should be considered as the claim involved by limiting.
In addition, be to be understood that, although this specification is described according to mode of execution, but not each mode of execution only comprises an independently technological scheme, this narrating mode of specification is only for clarity sake, those skilled in the art should by specification integrally, and the technological scheme in each embodiment also through appropriately combined, can form other mode of executions that it will be appreciated by those skilled in the art that.
Claims (5)
1. a Step Shaft, comprises main body (1), it is characterized in that: the end of each section of described main body (1) is provided with chamfering, and described main body (1) is except an end of axle or two end part, and the chamfering on all the other each section of ends is arc round angle; Described main body (1) is provided with the first diameter section (5), tapering transition section (6) and Second bobbin diameter section (7), tapering transition section (6) is arranged between the first diameter section (5) and Second bobbin diameter section (7), tapering transition section (6) is provided with recess radius (4) with the joint of Second bobbin diameter section (7), is provided with convex place radius (3) described Second bobbin diameter section (7) on tapering transition section (6) side; One end of described main body (1) is provided with internal spline (8), internal spline (8) is formed by the key tooth (10) of projection is adjacent successively with recessed teeth groove (9), recessed teeth groove (9) is formed between two adjacent key teeth (10), the key tooth (10) of projection is formed between two recessed teeth groove (9), the central axis of internal spline (8) and the central axis of main body (1) overlap mutually, and on the outer side wall of described internal spline (8), correspondence is provided with stiffening rib (2).
2. a kind of Step Shaft according to claim 1, is characterized in that: described recess radius (4) is set to 15 ~ 40mm, and convex place radius (3) is set to 2 ~ 10mm.
3. a kind of Step Shaft according to claim 1, is characterized in that: the key tooth (10) of described internal spline (8) is provided with 18 ~ 24, and key tooth (10) is involute tooth, and internal spline (8) adopts cold hobbing to process.
4. a kind of Step Shaft according to claim 1, is characterized in that: the cross section of described stiffening rib (2) is for semicircle.
5. a kind of Step Shaft according to claim 4, is characterized in that: the height of described stiffening rib (2) is 3 ~ 5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520532191.6U CN204851971U (en) | 2015-07-21 | 2015-07-21 | Step axle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520532191.6U CN204851971U (en) | 2015-07-21 | 2015-07-21 | Step axle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204851971U true CN204851971U (en) | 2015-12-09 |
Family
ID=54742523
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520532191.6U Expired - Fee Related CN204851971U (en) | 2015-07-21 | 2015-07-21 | Step axle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204851971U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105910768A (en) * | 2016-05-17 | 2016-08-31 | 昆山六丰机械工业有限公司 | T-shaped shaft of hub leak tester |
| CN113081403A (en) * | 2021-04-09 | 2021-07-09 | 王朝熙 | Novel artificial joint prosthesis |
-
2015
- 2015-07-21 CN CN201520532191.6U patent/CN204851971U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105910768A (en) * | 2016-05-17 | 2016-08-31 | 昆山六丰机械工业有限公司 | T-shaped shaft of hub leak tester |
| CN113081403A (en) * | 2021-04-09 | 2021-07-09 | 王朝熙 | Novel artificial joint prosthesis |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151209 Termination date: 20190721 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |