CN203500313U - Universal joint fork forge of new structure - Google Patents
Universal joint fork forge of new structure Download PDFInfo
- Publication number
- CN203500313U CN203500313U CN201320622807.XU CN201320622807U CN203500313U CN 203500313 U CN203500313 U CN 203500313U CN 201320622807 U CN201320622807 U CN 201320622807U CN 203500313 U CN203500313 U CN 203500313U
- Authority
- CN
- China
- Prior art keywords
- groove
- new structure
- connecting rib
- joint fork
- connecting tendon
- 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 - Lifetime
Links
- 238000005242 forging Methods 0.000 claims abstract description 16
- 230000007704 transition Effects 0.000 claims abstract description 4
- 210000002435 tendon Anatomy 0.000 claims description 25
- 210000005069 ears Anatomy 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 11
- 238000000034 method Methods 0.000 abstract description 5
- 208000025599 Heat Stress disease Diseases 0.000 abstract 1
- 238000007599 discharging Methods 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 230000005540 biological transmission Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000137 annealing Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Forging (AREA)
Abstract
The utility model discloses a universal joint fork forge of a new structure. The universal joint fork forge of the new structure comprises a connecting hub and two fork lugs arranged symmetrically, a connecting rib is arranged between the two fork lugs, a groove is formed in the portion between the axial direction of the end of the connecting hub and the connecting rib, the bottom of the groove is in arc face transition, the center of the outer surface of the connecting rib is provided with an arc groove, the radius of the arc groove is 22mm-28mm, and the thickness of the portion, between the bottom of the arc groove and the bottom of the groove, of the connecting rib is 6mm-8mm. According to the technical scheme, a bulb nest of the bottom of the groove is removed, the arc groove is formed in the center of the surface of the connecting rib, the thickness of the connecting rib is reduced, an air discharging hole is easy to machine, a bulb of a mold is omitted, the hardness of the mold cannot be reduced in the forging process, and heat fatigue deformation cannot be generated, so that the service life of the mold is greatly prolonged and the production efficiency is correspondingly improved.
Description
Technical field
The utility model belongs to automotive industry technical field, relates in particular to a kind of universal-joint fork forging new structure.
Background technique
At present, existing universal joint fork forged piece of transmission shaft structural type as shown in Figure 1, it comprises connection hub 1 and symmetrically arranged two fork ears 2, between two fork ears 2, be provided with connecting tendon 3, connect hub 1 end axis to and connecting tendon 3 between be provided with groove 4, connecting hub 1 need to be weldingly connected with transmission shaft tube, the discharge that produces gas during for the ease of welding, the exhaust port that need to be communicated with groove 4 in the processing of the center of connecting tendon 3.But universal-joint fork crotch center wall thickness is thicker, be difficult for processing exhaust port.For this reason, in the bottom centre of groove 4, design ball head nest 5, so both reduced the wall thickness of connecting tendon 3, alleviated again forge weight.But by actual production, find that this structural type exists defect: connecting tendon 3 thickness at ball head nest 5 places produce high temperature compared with little Yi, cause the bulb position annealing of mould, die hardness reduces, and produces thermal fatigue distortion, causes a whole set of mould to be scrapped.Die life is short, more the mold exchange Installation and Debugging cycle long, manufacturing efficiency is low.
Model utility content
The utility model, in order to solve deficiency of the prior art, provides a kind of universal-joint fork forging new structure that extends die life, enhances productivity.
For solving the problems of the technologies described above, the utility model adopts following technological scheme: universal-joint fork forging new structure, comprise and connect hub and symmetrically arranged two fork ears, between two fork ears, be provided with connecting tendon, connect hub end axis to and connecting tendon between be provided with groove, the transition of described bottom portion of groove cambered surface, the outer surface central authorities of connecting tendon are provided with curve bath, the radius of curve bath is 22-28mm, and the connecting tendon thickness between curve bath bottom and bottom portion of groove is 6-8mm.
The radius of described curve bath is 25mm, and the connecting tendon thickness between curve bath bottom and bottom portion of groove is 7mm.
Adopt technique scheme, the utility model removes the ball head nest of bottom portion of groove, and offer a curve bath in connecting tendon surface central authorities, so not only reduced the thickness of connecting tendon, exhaust port is easily processed, and made mould there is no bulb, in forging process, die hardness can not reduce, more can not produce thermal fatigue distortion, so just greatly improve the working life of mould the corresponding manufacturing efficiency that improved.The radius of curve bath is that the connecting tendon thickness between 25mm and curve bath bottom and bottom portion of groove is that 7mm is for ease of processing exhaust port and the assurance mould preferred parameter that thermal fatigue is not out of shape.
Accompanying drawing explanation
Fig. 1 is the structural representation of prior art;
Fig. 2 is structural representation of the present utility model.
Embodiment
As shown in Figure 2, universal-joint fork forging new structure of the present utility model, comprise and connect hub 1 and symmetrically arranged two fork ears 2, between two fork ears 2, be provided with connecting tendon 3, connect hub 1 end axis to and connecting tendon 3 between be provided with groove 4, groove 4 bottom cambered surface transition, the outer surface central authorities of connecting tendon 3 are provided with curve bath 6, the radius R of curve bath 6 is 22-28mm, preferably 25mm; Connecting tendon 3 thickness H between curve bath 6 bottoms and groove 4 bottoms are 6-8mm, preferably 7mm.
The utility model removes the ball head nest of groove 4 bottoms, and offer a curve bath 6 in the surperficial central authorities of connecting tendon 3, so not only reduced the thickness of connecting tendon 3, exhaust port is easily processed, and make mould there is no bulb, in forging process, die hardness can not reduce, and more can not produce thermal fatigue distortion, so just greatly improved the working life of mould the corresponding manufacturing efficiency that improved.The radius of curve bath 6 is that connecting tendon 3 thickness between 25mm and curve bath 6 bottoms and groove 4 bottoms are that 7mm is for ease of processing exhaust port and the assurance mould preferred parameter that thermal fatigue is not out of shape.
Compared with prior art, the utlity model has following advantage:
1, die life aspect: certain driving shaft universal joint fork (shown in Fig. 1) is not before change, and a mold can be produced 2000 of universal-joint fork forging continuously.Change to after structure of the present utility model, through a set of mould of overtesting, can produce continuously 5000 of universal-joint fork forging.Improve 1.5 times die life, saved die material, shortened the mould manufacture cycle.
2, manufacturing efficiency aspect: because forging mould volume is large, quality weight, be difficult for installing, so the Installation and Debugging time of mould has accounted for a big chunk of forging production time.Before certain driving shaft universal joint fork (shown in Fig. 1) is not changed, die life is short, needs repeatedly more mold exchange, causes manufacturing efficiency low, and producing a collection of forging needs 5 days.Change to after structure of the present utility model, through testing the forging of production equivalent amount, only need about 4 days, manufacturing efficiency has improved 20%.
Claims (2)
1. universal-joint fork forging new structure, comprise and connect hub and symmetrically arranged two fork ears, between two fork ears, be provided with connecting tendon, connect hub end axis to and connecting tendon between be provided with groove, it is characterized in that: the transition of described bottom portion of groove cambered surface, the outer surface central authorities of connecting tendon are provided with curve bath, and the radius of curve bath is 22-28mm, and the connecting tendon thickness between curve bath bottom and bottom portion of groove is 6-8mm.
2. universal-joint fork forging new structure according to claim 1, is characterized in that: the radius of described curve bath is 25mm, and the connecting tendon thickness between curve bath bottom and bottom portion of groove is 7mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320622807.XU CN203500313U (en) | 2013-10-10 | 2013-10-10 | Universal joint fork forge of new structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320622807.XU CN203500313U (en) | 2013-10-10 | 2013-10-10 | Universal joint fork forge of new structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203500313U true CN203500313U (en) | 2014-03-26 |
Family
ID=50331293
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320622807.XU Expired - Lifetime CN203500313U (en) | 2013-10-10 | 2013-10-10 | Universal joint fork forge of new structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203500313U (en) |
-
2013
- 2013-10-10 CN CN201320622807.XU patent/CN203500313U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140326 |
|
| CX01 | Expiry of patent term |