CN214617457U - Light weight structure of constant speed drive shaft - Google Patents
Light weight structure of constant speed drive shaft Download PDFInfo
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- CN214617457U CN214617457U CN202120030956.1U CN202120030956U CN214617457U CN 214617457 U CN214617457 U CN 214617457U CN 202120030956 U CN202120030956 U CN 202120030956U CN 214617457 U CN214617457 U CN 214617457U
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Abstract
The utility model discloses a lightweight structure of constant velocity drive shaft, it includes first spindle nose, second spindle nose, jackshaft, the overhead first weld part that is equipped with of first spindle, be equipped with first face of welding in the first weld part, the overhead second weld part that is equipped with of second spindle, be equipped with the second face of welding in the second weld part, the both ends of jackshaft are equipped with third weld part, fourth weld part respectively, be equipped with on the third weld part with first face of welding welded third face of welding, be equipped with on the fourth weld part with second face of welding welded fourth face. The utility model discloses the lightweight structure of constant speed drive shaft who obtains, it is effectual, production efficiency is high to weld, and structural strength after the welding is high, and stability is strong, and the shock attenuation is effectual, and the whole quality after the welding is little, and weld time is short.
Description
Technical Field
The utility model relates to a machine part, especially a lightweight structure of constant speed drive shaft.
Background
With the increasing power of domestic and foreign passenger vehicles, the specification of a constant velocity universal joint driving shaft assembly is increased, but in order to meet the requirements of light weight, energy conservation, emission reduction and the like of various host factories, the original vehicle driving shaft with smaller power is a solid shaft, and after the power is increased, the specification of a longer intermediate shaft is increased along with the universal joint, so that more serious challenges are provided for realizing the integral light weight.
As shown in fig. 1, a general driving shaft mainly uses a friction welding technology to weld an intermediate shaft and a shaft head together, but since the intermediate shaft is not only required to be made of a material easy to weld in the friction welding, but also the intermediate shaft is required to be made of the same material as the shaft head, and the general shaft head is made of a steel material, the intermediate shaft is also made of the steel material, so that the weight reduction is difficult to realize; the flanging of the driving shaft after friction welding is obvious, if the welded joint surface of the driving shaft is small, the probability of fracture is increased on the joint surface, and if the welded joint surface of the driving shaft is large, more consumed materials are caused; if the driving shaft needs higher precision and coaxiality, if a friction welding mode is adopted, higher cost is needed, high temperature is generated in the friction welding process, and the original performance of the material can be changed due to the high temperature; if the driving shaft adopts the friction welding mode, the production efficiency is lower.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the above-mentioned prior art not enough and provide a lightweight structure of constant speed drive shaft that whole quality is little after convenient welding, welding are effectual, production efficiency height, welding.
In order to realize above-mentioned purpose, the utility model discloses a lightweight structure of constant velocity drive shaft, it includes first spindle nose, second spindle nose, jackshaft, the overhead first weld part that is equipped with of first weld part, be equipped with first face of welding in the first weld part, the overhead second weld part that is equipped with of second spindle, be equipped with the second face of welding in the second weld part, the both ends of jackshaft are equipped with third weld part, fourth weld part respectively, be equipped with on the third weld part with first face of welding welded third face of welding, be equipped with on the fourth weld part with second face of welding welded fourth face.
In order to facilitate welding, the first welding portion and the second welding portion are both grooves, the first welding surface and the second welding surface are both inner surfaces of the grooves, the third welding surface is an outer surface of the third welding portion, the third welding portion and the middle shaft are in a stepped structure, the fourth welding surface is an outer surface of the fourth welding portion, and the fourth welding portion and the middle shaft are in a stepped structure.
In order to facilitate welding, the first welding surface is the outer surface of the first welding portion, the first welding portion and the first shaft head are in a stepped structure, the second welding surface is the outer surface of the second welding portion, the second welding portion and the second shaft head are in a stepped structure, the third welding portion and the fourth welding portion are respectively located at two ends of the middle shaft, and the third welding surface and the fourth welding surface are respectively the inner surfaces of the third welding portion and the fourth welding portion.
In order to facilitate welding, the welding area formed by welding the first welding surface and the third welding surface, and the welding area formed by welding the second welding surface and the fourth welding surface respectively comprise a main welding area directly welded by electromagnetic pulse welding and a naturally formed area naturally formed in the welding process.
In order to reduce the mass of the constant-speed driving shaft, the intermediate shaft is made of aluminum magnesium alloy material.
In order to realize the lightweight structure of constant velocity drive axle, the utility model discloses a method of lightweight of constant velocity drive axle, including following step:
a) preprocessing a welding surface to be welded;
b) fixing the first shaft head, the second shaft head and the intermediate shaft by using a welding fixture;
c) electromagnetic pulse welding, so that the first welding surface and the third welding surface are welded together, and the second welding surface and the fourth welding surface are welded together;
d) and (4) subsequent treatment, wherein the subsequent treatment comprises heat treatment and finished product surface treatment.
In order to better treat the welding surfaces, the pretreatment of the step a) is to perform decontamination treatment on the first welding surface, the second welding surface, the third welding surface and the fourth welding surface.
In order to reduce the processing difficulty, the welding area welded by the first welding surface and the third welding surface and the welding area welded by the second welding surface and the fourth welding surface respectively comprise a main welding area and a natural forming area, and the main welding area is subjected to electromagnetic pulse welding in the step c).
The lightweight structure of the constant-speed driving shaft obtained by the utility model can not obviously heat up in the process of electromagnetic pulse welding, so the original performance of the material can be kept; because the energy generated by the electromagnetic pulse welding can be accurately controlled, the mechanization and the automation are conveniently realized; compared with the traditional friction welding, the electromagnetic pulse welding has a short welding process, so that a large amount of time can be saved; the overall mass after welding is small; the utility model discloses the lightweight method that obtains the constant speed drive shaft welds effectually, production efficiency is high, and structural strength after the welding is high, and stability is strong, and the shock attenuation is effectual, and weld time is short.
Drawings
FIG. 1 is a schematic structural view of a friction weld of a constant velocity drive shaft;
fig. 2 is an exploded view of a lightweight structure of a constant speed drive shaft in embodiment 1;
FIG. 3 is a schematic structural view of a lightweight structure of the constant speed drive shaft in embodiment 1;
fig. 4 is an enlarged view at a in fig. 3;
fig. 5 is a flowchart of a method for reducing the weight of the constant speed drive shaft in embodiment 1;
fig. 6 is an exploded view of a lightweight structure of a constant speed drive shaft in embodiment 2;
FIG. 7 is a schematic structural view of a lightweight structure of the constant speed drive shaft in embodiment 2;
fig. 8 is an enlarged view at B in fig. 6;
fig. 9 is a schematic structural view of a lightweight structure of the constant speed drive shaft in embodiment 3.
In the figure: the welding device comprises a first shaft head 1, a second shaft head 2, an intermediate shaft 3, a first welding part 4, a first welding surface 5, a second welding part 6, a second welding surface 7, a steel intermediate shaft 8, a third welding part 9, a fourth welding part 10, a third welding surface 11, a fourth welding surface 12, a main welding area 13 and a natural forming area 14.
Detailed Description
The present invention will be further explained with reference to the drawings and examples.
Example 1:
the embodiment describes the utility model relates to a lightweight structure of constant speed drive shaft, as shown in fig. 2 to fig. 4, in order to realize above-mentioned purpose, the utility model discloses a lightweight structure of constant speed drive shaft, it includes first spindle nose 1, second spindle nose 2, jackshaft 3, be equipped with first weld part 4 on the first spindle nose 1, be equipped with first weld face 5 on the first weld part 4, be equipped with second weld part 6 on the second spindle nose 2, be equipped with second weld face 7 on the second weld part 6, the both ends of jackshaft 3 are equipped with third weld part 9, fourth weld part 10 respectively, be equipped with on the third weld part 9 with first weld face 5 welded third weld face 11, be equipped with on the fourth weld part 10 with second weld face 7 welded fourth weld face 12.
For convenience of welding, the first welding portion 4 and the second welding portion 6 are both grooves, the first welding surface 5 and the second welding surface 7 are both inner surfaces of the grooves, the third welding surface 11 is an outer surface of the third welding portion 9, the third welding portion 9 and the intermediate shaft 3 are in a step structure, the fourth welding surface 12 is an outer surface of the fourth welding portion 10, and the fourth welding portion 10 and the intermediate shaft 3 are in a step structure.
In order to reduce the mass of the constant-speed drive shaft, the intermediate shaft 3 is made of aluminum magnesium alloy.
In order to realize the light weight structure of the constant speed drive shaft, the present invention provides a method for reducing the weight of the constant speed drive shaft, as shown in fig. 5, comprising the steps of:
a) preprocessing a welding surface to be welded;
b) fixing the first shaft head 1, the second shaft head 2 and the intermediate shaft 3 by using a welding fixture;
c) electromagnetic pulse welding, namely welding the first welding surface 5 and the third welding surface 11 together, and welding the second welding surface 7 and the fourth welding surface 12 together;
d) and (4) subsequent treatment, wherein the subsequent treatment comprises heat treatment and finished product surface treatment.
For better treatment of the soldering surface, the pretreatment of the step a) is to perform decontamination treatment on the first soldering surface 5, the second soldering surface 7, the third soldering surface 11 and the fourth soldering surface 12.
In the embodiment, the stains on the first welding surface 5, the second welding surface 7, the third welding surface 11 and the fourth welding surface 12 are removed by pretreating the welding surfaces, so that the problem that the welding effect is poor due to poor contact of the welding surfaces caused by impurities in the electromagnetic pulse welding process is solved, high-pressure, instantaneous and high-speed electromagnetic waves are generated in the step c), the electromagnetic waves act on a weldment, the first welding surface 5 of the weldment is violently impacted to the third welding surface 11 at high speed, then jet flow and violent metal flow are generated on the contact interface of the first welding surface 5 and the third welding surface 11, an adsorption layer and an oxidation layer film on the contact surface are removed, and the two clean metal surfaces are tightly combined together under the action of high pressure to form firm metal key connection, and finally the complete welding of the two metals is achieved. The process of welding the second welding surface 7 and the fourth welding surface 12 is consistent with the process of welding the first welding surface 5 and the third welding surface 11.
In this embodiment, after the lightweight structure is manufactured, quality detection and performance detection may be further performed, where the quality detection and performance detection includes detection of contents such as appearance, tensile strength, torsional rigidity, and the like of a product, and specific contents are made by a manufacturer.
Because the welding mode adopts electromagnetic pulse to weld first spindle nose 1, second spindle nose 2, jackshaft 3, electromagnetic pulse welds the intermetallic seam of realization that can be convenient, jackshaft 3 that adopts almag material to make if this embodiment has following advantage: the strength is high, the risk of fatigue failure of the drive shaft is reduced, and the strength of the constant-speed drive shaft is enhanced; the casting is stable, the castability and the dimensional stability are good, the processing is easy, the rejection rate is low, and the damping coefficient is good; the shock absorption performance is strong, the toughness is good, the natural frequency of the product is improved, and the rotational inertia is reduced; the processing is convenient, and the dimensional tolerance of the intermediate shaft can be ensured in the process of producing the intermediate shaft 3; the intermediate shaft has a smaller mass than steel intermediate shafts, so that the driving shaft is more lightweight.
In the process of electromagnetic pulse welding, the first shaft head 1, the second shaft head 2 and the intermediate shaft 3 are not obviously heated, so that the original performance of the material can be kept; because the energy generated by the electromagnetic pulse welding can be accurately controlled, the mechanization and the automation are conveniently realized; compared with the traditional friction welding, the electromagnetic pulse welding has a short welding process, so that a large amount of time can be saved; the welding back does not have the turn-ups, and the welded composition surface is great, has effectually strengthened the intensity at the composition surface, has prevented at the composition surface fracture, need not use extra material moreover to resources are saved's purpose has been realized.
The lightweight structure of the constant-speed driving shaft obtained by the utility model has small overall mass after welding; the utility model discloses the lightweight method that obtains the constant speed drive shaft welds effectually, production efficiency is high, and structural strength after the welding is high, and stability is strong, and the shock attenuation is effectual, and weld time is short.
Example 2:
as shown in fig. 6 to 8, the lightweight structure of the constant velocity drive shaft described in this embodiment is different from that described in embodiment 1 in that the first weld surface 5 is an outer surface of the first weld portion 4, the first weld portion 4 and the first stub shaft 1 are in a stepped structure, the second weld surface 7 is an outer surface of the second weld portion 6, the second weld portion 6 and the second stub shaft 2 are in a stepped structure, the third weld portion 9 and the fourth weld portion 10 are respectively located at both ends of the intermediate shaft 3, and the third weld surface 11 and the fourth weld surface 12 are respectively inner surfaces of the third weld portion 9 and the fourth weld portion 10.
Example 3:
in the light weight structure of the constant velocity drive shaft described in this embodiment, as shown in fig. 9, in addition to the features described in embodiments 1 and 2, in order to facilitate welding, the weld zone formed by welding the first weld surface 5 to the third weld surface 11, and the weld zone formed by welding the second weld surface 7 to the fourth weld surface 12 each include a main weld zone 13 directly welded by electromagnetic pulse welding, and a naturally formed zone 14 naturally formed during welding.
In order to reduce the processing difficulty, the welding area of the first welding surface 5 and the third welding surface 11 and the welding area of the second welding surface 7 and the fourth welding surface 12 both comprise a main welding area 13 and a natural forming area 14, and the main welding area 13 is subjected to electromagnetic pulse welding in the step c).
In this embodiment, the main welding area 13 formed by welding the first welding surface 5 and the third welding surface 11, the second welding surface 7 and the fourth welding surface 12 together by electromagnetic pulse welding, and the natural formation area 14 formed by natural flow after metal melting due to high temperature generated during electromagnetic pulse welding, and the area of the main welding area 13 is larger than that of the natural formation area 14, so that the structural strength after welding is not affected, the processing difficulty is reduced, and the processing is facilitated.
Claims (5)
1. The utility model provides a lightweight structure of constant velocity drive shaft, it includes first spindle nose (1), second spindle nose (2), jackshaft (3), its characterized in that, be equipped with first weld part (4) on first spindle nose (1), be equipped with first weld face (5) on first weld part (4), be equipped with second weld part (6) on second spindle nose (2), be equipped with second weld face (7) on second weld part (6), the both ends of jackshaft (3) are equipped with third weld part (9), fourth weld part (10) respectively, be equipped with on third weld part (9) with first weld face (5) welded third weld face (11), be equipped with on fourth weld part (10) with second weld face (7) welded fourth weld face (12).
2. The structure for reducing the weight of a constant velocity drive shaft according to claim 1, wherein the first weld portion (4) and the second weld portion (6) are both recessed grooves, the first weld surface (5) and the second weld surface (7) are both recessed inner surfaces, the third weld surface (11) is an outer surface of a third weld portion (9), the third weld portion (9) and the intermediate shaft (3) have a stepped structure, the fourth weld surface (12) is an outer surface of a fourth weld portion (10), and the fourth weld portion (10) and the intermediate shaft (3) have a stepped structure.
3. The structure for reducing the weight of a constant velocity drive shaft according to claim 1, wherein the first weld surface (5) is an outer surface of a first weld portion (4), the first weld portion (4) and the first stub shaft (1) have a stepped structure, the second weld surface (7) is an outer surface of a second weld portion (6), the second weld portion (6) and the second stub shaft (2) have a stepped structure, a third weld portion (9) and a fourth weld portion (10) are respectively located at both ends of the intermediate shaft (3), and the third weld surface (11) and the fourth weld surface (12) are respectively inner surfaces of the third weld portion (9) and the fourth weld portion (10).
4. The structure of reducing the weight of a constant velocity drive shaft according to claim 1, 2 or 3, wherein the weld zone formed by welding the first weld surface (5) to the third weld surface (11), the weld zone formed by welding the second weld surface (7) to the fourth weld surface (12) each include a main weld zone (13) directly welded by electromagnetic pulse welding and a naturally formed zone (14) naturally formed during welding.
5. The structure for reducing weight of a constant velocity drive shaft according to claim 1, 2 or 3, wherein the intermediate shaft (3) is an aluminum magnesium alloy material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120030956.1U CN214617457U (en) | 2021-01-07 | 2021-01-07 | Light weight structure of constant speed drive shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120030956.1U CN214617457U (en) | 2021-01-07 | 2021-01-07 | Light weight structure of constant speed drive shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214617457U true CN214617457U (en) | 2021-11-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120030956.1U Active CN214617457U (en) | 2021-01-07 | 2021-01-07 | Light weight structure of constant speed drive shaft |
Country Status (1)
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| CN (1) | CN214617457U (en) |
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2021
- 2021-01-07 CN CN202120030956.1U patent/CN214617457U/en active Active
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