CN103742553A - Universal joint fork forging blank - Google Patents
Universal joint fork forging blank Download PDFInfo
- Publication number
- CN103742553A CN103742553A CN201310714194.7A CN201310714194A CN103742553A CN 103742553 A CN103742553 A CN 103742553A CN 201310714194 A CN201310714194 A CN 201310714194A CN 103742553 A CN103742553 A CN 103742553A
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- Prior art keywords
- fork
- closed curve
- joint fork
- universal joint
- universal
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Abstract
The invention provides a universal joint fork forging blank. The shaft head portion and the fork lug portion form a whole, the fork lug portion is composed of flange plates at the end of the shaft head portion and fork lugs extending from two sides corresponding to the flange plates, and the flange plates and a shaft head are of hollow structures. The edges of the hollow structures are provided with closed curve reinforcing ribs, the height of the closed curve reinforcing ribs is 3-6mm, and the width of the closed curve reinforcing ribs is 3-6mm.The universal joint fork forging blank is characterized in that inner crosspieces corresponding to the outer ends of the fork lugs are provided with outward opening U-shaped recesses, the depth of the U-shaped recesses is calculated according to the remaining machining allowance 2-4mm. The self weight of the blank is greatly reduced, the blank is reinforced through the closed curve reinforcing ribs, and the strength is improved on the basis that materials are saved. In addition, two fork lugs of a universal joint fork are provided with U-shaped recess structures, so that the purposes of saving the materials and meanwhile reducing the forging and machining difficulty. Raw materials are saved by 1.2-2.5Kg for one universal joint fork, and the material cost is saved by 20%-25%.
Description
Technical field
The present invention is a kind of universal-joint fork, specifically universal-joint fork conventional and transmission shaft tube welding in machinery and automotive transmission.
Background technique
Universal joint is one of conventional vital part of transmitting torque in machinery and automotive transmission, the universal-joint fork rough forging using at present as shown in Figure 1, by spindle nose part 1, fork ear portions, form an entirety, the fork ear 3 that fork ear portions is extended by flange plate 2 and the corresponding both sides of flange plate of spindle nose part end forms, in order to strengthen intensity, boss 4 in the middle of universal-joint fork ear is provided with.This universal-joint fork structure shape complexity; Part strength is low; It is larger that forging and machine add difficulty; The heavier cost that causes of weight is high, is difficult to the requirement of satisfied automotive light weight technology now and low-cost high-efficiency benefit.
Summary of the invention
In order to overcome the deficiency that above-mentioned universal joint weight is large, intensity is low, the invention provides a kind of universal-joint fork rough forging.
The technical solution adopted in the present invention is: a kind of universal-joint fork rough forging, by spindle nose part, fork ear portions, form an entirety, the fork ear that fork ear portions is extended by flange plate and the corresponding both sides of flange plate of spindle nose part end forms, and it is characterized in that: flange plate and spindle nose are hollow structure; At the edge of hollow structure, be provided with closed curve stiffening rib, the height of closed curve stiffening rib is 3-6 millimeter, and the width of closed curve stiffening rib is 3-6 millimeter.
To the further improvement of technique scheme: be provided with outwardly open " U " shape depression, U corresponding to the home records of two fork ear outer ends " degree of depth of shape depression to be to also have machining allowance 2-4 millimeter to calculate.
The invention has the beneficial effects as follows: the structure of removing nest complexity in the middle boss of the universal-joint fork using at present and bottom, change the hollow structure of through hole into, thereby greatly reduce blank own wt, and strengthen by closed curve stiffening rib, on the basis of saving material, gain in strength, can when saving material, realize the object reducing costs; Because two ear fork end of universal-joint fork will process the earhole that assembles cross assembly, universal-joint fork two is pitched to tragus base home record face and design the new structure with " U " shape depression in addition, when saving material, realize the object that reduction forging and machine add difficulty; A universal-joint fork 1.2-the 2.5Kg that saves material, saves cost of material 20%-25%.
Accompanying drawing explanation
Fig. 1 is the universal-joint fork blank drawing using at present.
Fig. 2 is a kind of universal-joint fork rough forging of the present invention.
Fig. 3 is the generalized section of closed curve stiffening rib.
The shearing stress in torsion power distribution map of Fig. 4 round bar solid section axle.
Embodiment
A kind of universal-joint fork rough forging as shown in Figure 2 and Figure 3, forms an entirety by spindle nose part 1, fork ear portions, and the fork ear 3 that fork ear portions is extended by flange plate 2 and the corresponding both sides of flange plate of spindle nose part end forms, and flange plate and spindle nose are hollow structure 5; At the edge of hollow structure 5, be provided with closed curve stiffening rib 6, the height of closed curve stiffening rib 6 is 3-6 millimeter, and the width of closed curve stiffening rib 6 is 3-6 millimeter.
As shown in Figure 2, corresponding to the home records of two fork ear outer ends, being provided with outwardly open " U " shape depression 7, U " degree of depth of shape depression to be to also have machining allowance 2-4 millimeter to calculate; Like this, can further reduce weight.
As shown in Figure 4, according to engineering mechanics principle---the shearing stress in torsion power regularity of distribution (shown in Fig. 5) of round bar solid section axle: when the maximum shear stress of section edges reaches allowable shear stress, near the center of circle, the stress at each point place is very little, in order rationally to utilize material, material should be placed to the part away from the center of circle, centre can become hollow-core construction.
For example, a kind of universal-joint fork using at present, the heavy 8.6Kg of blank, the universal-joint fork designing according to technical solution of the present invention, blank heavily only has 6.5Kg;
Do brokenly base intensity experiment, current a kind of universal-joint fork twists off while loading moment of torsion 38000N.m, and universal-joint fork of the present invention needs to load moment of torsion 45000N.m and just twists off;
Do fatigue strength experiment, load moment of torsion 19000N.m, current a kind of universal-joint fork operation cracks for 210,000 times, and universal-joint fork of the present invention has moved 300,000 times.
Claims (2)
1. a universal-joint fork rough forging, forms an entirety by spindle nose part, fork ear portions, and the fork ear that fork ear portions is extended by flange plate and the corresponding both sides of flange plate of spindle nose part end forms, and it is characterized in that: flange plate and spindle nose are hollow structure; At the edge of hollow structure, be provided with closed curve stiffening rib, the height of closed curve stiffening rib is 3-6 millimeter, and the width of closed curve stiffening rib is 3-6 millimeter.
2. a kind of universal-joint fork rough forging according to claim 1, is characterized in that: the home records corresponding to two fork ear outer ends are provided with outwardly open " U " shape depression, U " degree of depth of shape depression to be to also have machining allowance 2-4 millimeter to calculate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310714194.7A CN103742553A (en) | 2013-12-23 | 2013-12-23 | Universal joint fork forging blank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310714194.7A CN103742553A (en) | 2013-12-23 | 2013-12-23 | Universal joint fork forging blank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103742553A true CN103742553A (en) | 2014-04-23 |
Family
ID=50499604
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310714194.7A Pending CN103742553A (en) | 2013-12-23 | 2013-12-23 | Universal joint fork forging blank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103742553A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105387087A (en) * | 2015-12-08 | 2016-03-09 | 南京金龙新能源汽车研究院有限公司 | Automobile transmission shaft connecting flange |
| CN108825672A (en) * | 2017-07-24 | 2018-11-16 | 江苏格尔顿传动有限公司 | A kind of light wear-resistant universal joint |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101456056A (en) * | 2008-12-29 | 2009-06-17 | 十堰义兴工业发展有限公司 | Autocar spindle fork vertical type forging technique method |
| CN202301511U (en) * | 2011-11-07 | 2012-07-04 | 许昌远东传动轴股份有限公司 | Reinforcement universal-joint fork |
| CN202628865U (en) * | 2012-06-28 | 2012-12-26 | 中国重汽集团济南动力有限公司 | Large-torque transmission shaft connection flange plate for heavy truck |
| CN202641842U (en) * | 2012-05-16 | 2013-01-02 | 无锡金也汽车部件有限公司 | Stamped piece type universal joint fork |
| CN203743230U (en) * | 2013-12-23 | 2014-07-30 | 十堰义兴工业发展有限公司 | Forging blank of universal joint fork |
-
2013
- 2013-12-23 CN CN201310714194.7A patent/CN103742553A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101456056A (en) * | 2008-12-29 | 2009-06-17 | 十堰义兴工业发展有限公司 | Autocar spindle fork vertical type forging technique method |
| CN202301511U (en) * | 2011-11-07 | 2012-07-04 | 许昌远东传动轴股份有限公司 | Reinforcement universal-joint fork |
| CN202641842U (en) * | 2012-05-16 | 2013-01-02 | 无锡金也汽车部件有限公司 | Stamped piece type universal joint fork |
| CN202628865U (en) * | 2012-06-28 | 2012-12-26 | 中国重汽集团济南动力有限公司 | Large-torque transmission shaft connection flange plate for heavy truck |
| CN203743230U (en) * | 2013-12-23 | 2014-07-30 | 十堰义兴工业发展有限公司 | Forging blank of universal joint fork |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105387087A (en) * | 2015-12-08 | 2016-03-09 | 南京金龙新能源汽车研究院有限公司 | Automobile transmission shaft connecting flange |
| CN108825672A (en) * | 2017-07-24 | 2018-11-16 | 江苏格尔顿传动有限公司 | A kind of light wear-resistant universal joint |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140423 |
|
| WD01 | Invention patent application deemed withdrawn after publication |