CN107433306A - A kind of forming method of banjo axle for vehicle - Google Patents
A kind of forming method of banjo axle for vehicle Download PDFInfo
- Publication number
- CN107433306A CN107433306A CN201610355960.9A CN201610355960A CN107433306A CN 107433306 A CN107433306 A CN 107433306A CN 201610355960 A CN201610355960 A CN 201610355960A CN 107433306 A CN107433306 A CN 107433306A
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- Prior art keywords
- steel pipe
- seamless steel
- bulging
- finished product
- otch
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D53/00—Making other particular articles
- B21D53/88—Making other particular articles other parts for vehicles, e.g. cowlings, mudguards
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
- B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
- B21D26/033—Deforming tubular bodies
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
The invention provides a kind of forming method of the banjo axle for vehicle, including：Blanking, intercept seamless steel pipe；First bulging, seamless steel pipe is placed in semi-finished product mould, superhigh pressure liquid medium is injected into seamless steel pipe, the seamless steel pipe is expanded outwardly to the outer wall of the seamless steel pipe and is bonded with the inwall of the semi-finished product mould, then made annealing treatment；Punching, makes a call to a pair of symmetrical holes at a distance in the middle part of seamless steel pipe；Otch, otch is carried out along the axial direction of the seamless steel pipe between a pair of symmetrical holes；Final bulging, seamless steel pipe is placed in finished product die, and supporter is inserted into the cavity of seamless steel pipe, the outer wall of incision dilatating and deformable to the seamless steel pipe of seamless steel pipe is bonded with the inwall of the finished product die, so as to obtain the banjo axle.The integral rigidity and intensity of axle housing of the present invention can be more preferable, reduce a large amount of welding job amounts, internal stress is small, and the fatigue resistance of workpiece greatly enhances.
Description
Technical field
The present invention relates to the forming method of technical field of vehicle, especially a kind of banjo axle for vehicle.
Background technology
With the rapid development of auto manufacturing of China, automobile will gradually adopt that intensity is high, in light weight, manufacturer
Just axle housing.
At present, domestic and international automobile axle housing substantially uses two kinds of structures, and one kind is segmented, and another kind is overall
Formula.Separable housing is structurally characterized in that：Center section is bolted by axle housing, Qiao Gai, two casting,
Both ends axle tube is respectively pressed into axle housing, Qiao Gai, then soldering.However, separable housing has several drawbacks in that：
1. whole axle housing is made up of two casting and seamless steel pipe, manufacturing procedure is complicated, it is necessary to equipment is more, processing capacity
Greatly, productivity ratio is low.2. axle housing, Qiao Gai, axle tube are processed respectively, then equipment combination, easily causes accumulation
Error.Overall precision is not easy to ensure.3. the weight of whole axle housing is larger.
Publication No. CN2032167U discloses a kind of Integral type bridge shell for automobile, and it is by the nothing after scalable
Seam butt welding of steel tube, which closes, to be formed, scalable to refer to pass through the shrinkage block draw in the both ends of one section of steel pipe, one end, and another
One end through tube cavity be put into hard rubber mold block pressurization after, make steel pipe by glue mold block deformation and dilatating and deformable.
The result weld seam of the axle housing is short, and strength and stiffness are high, it is ensured that the precision of axle housing, while extend making for axle housing
Use the life-span.Need to do however, elongation percentage is inadequate when the interlude of above-mentioned banjo axle is due to punching press, during butt welding
Triangle reinforced welding, both ends bridge tube have twice cross weld with interlude soldering, easily cause cumulative errors, overall
Precision is not easy to ensure.
The content of the invention
It is an object of the invention to provide a kind of banjo axle for reducing welding capacity and technique and being simply to vehicle
Moulding process.
The technical scheme that the present invention solves above-mentioned technical problem is as follows：
A kind of moulding process of banjo axle for vehicle, comprises the following steps：
Blanking, according to the length of required banjo axle, intercept seamless steel pipe；
First bulging, the seamless steel pipe is placed in semi-finished product mould, injects superelevation into the seamless steel pipe
Press liquid medium, the seamless steel pipe is set to expand outwardly to the outer wall of the seamless steel pipe and the semi-finished product mould
Inwall fitting, then made annealing treatment, so as to obtain the seamless steel pipe after first bulging；
Punch, a pair of symmetrical holes are made a call at a distance in the middle part of the seamless steel pipe after the first bulging；
Otch, otch is carried out along the axial direction of the seamless steel pipe between the pair of symmetrical holes, after obtaining otch
Seamless steel pipe；
Final bulging, the seamless steel pipe after the otch is placed in finished product die, to seamless after the otch
Insertion supporter in the cavity of steel pipe, make the incision dilatating and deformable of the seamless steel pipe to the seamless steel pipe
Outer wall is bonded with the inwall of the finished product die, so as to obtain the banjo axle.
On the basis of above-mentioned technical proposal, the present invention can also do following improvement：
Alternatively, in blanking step, the length of the seamless steel pipe of interception is 1000mm-1500mm.
Alternatively, the first bulging step is specifically to be injected using extra high voltage system into described seamless steel pipe
Superhigh pressure liquid medium, the middle cross section of the seamless steel pipe after the first bulging is square.
Alternatively, the final bulging step is to fill in rubber into the cavity of the seamless steel pipe after the otch
Capsule, and high-pressure liquid medium is injected into the rubber bag tank, while apply axially to the both ends of the seamless steel pipe
Load, to cause outer wall and the finished product of the incision dilatating and deformable of the seamless steel pipe to the seamless steel pipe
The inwall fitting of mould.
Alternatively, the final bulging step is to insert polyurethane into the inner chamber of the seamless steel pipe after the otch
Rod applies axial load to produce pressure at the both ends of the seamless steel pipe, makes cutting for the seamless steel pipe
The outer wall of dilatating and deformable to the seamless steel pipe is bonded with the inwall of the finished product die at mouthful.
Alternatively, for the banjo axle obtained after bulging step, in addition to its two tip cut-off processing more than
The step of amount.
Alternatively, the first bulging step and the final bulging step are cold machine-shaping.
Alternatively, in blanking step, the cross section of the seamless steel pipe is circular or square.
Alternatively, in first bulging step, the both ends of the seamless steel pipe are sealings.
Alternatively, for the banjo axle obtained after excision allowance step, the step welded is included
Suddenly, the welding step is that oil sump and shrouding is respectively welded in both sides at the seamless steel pipe intermediate openings.
Beneficial effects of the present invention：
When carrying out first bulging step, 1. seamless steel pipe will not internally damage the present invention in structure and in performance
Bad, the integral rigidity and intensity of axle housing can be more preferable, reduce a large amount of welding job amounts, and internal stress is small, workpiece it is anti-tired
Labor intensity greatly enhances；
2. the stock utilization of the present invention is higher, the waste of excess stock is not had；
3. the process of the present invention is few, processing efficiency is higher；
4. the present invention utilizes cooling effect of the superhigh pressure liquid in forming process, make workpiece is cooled to strengthen, obtain
The workpiece strength higher than general punch process.
Brief description of the drawings
Fig. 1 is the process chart of the moulding process of the banjo axle for vehicle of the present invention；
Fig. 2 is the change that the cross section in the middle part of the seamless steel pipe in process chart shown in Fig. 1 in step 5 elapses over time
Change figure.
Embodiment
The principle and feature of the present invention are described below in conjunction with accompanying drawing, example is served only for explaining this hair
It is bright, it is not intended to limit the scope of the present invention.
When carrying out first bulging step, seamless steel pipe will not internally be damaged the present invention in structure and in performance,
The integral rigidity and intensity of axle housing can be more preferable, reduce a large amount of welding job amounts, and internal stress is small, workpiece it is antifatigue strong
Degree greatly enhances；
The stock utilization of the present invention is higher, does not have the waste of excess stock；
The process of the present invention is few, and processing efficiency is higher；
The present invention utilizes cooling effect of the superhigh pressure liquid in forming process, makes workpiece is cooled to strengthen, obtains than one
As the higher workpiece strength of punch process.
The invention provides a kind of moulding process of the banjo axle for vehicle, using seamless steel pipe as pre-
Product.Fig. 1 is the process chart of the moulding process of the banjo axle for vehicle of the present invention.Referring to Fig. 1, bag
Include following steps：
Step 1, blanking：From the seamless steel pipe of certain size, the length of needs is intercepted, is generally
1000mm-1500mm.Wherein, the cross section of seamless steel pipe both can be square or circular.
Step 2, first bulging：The seamless steel pipe is placed in semi-finished product mould, into the seamless steel pipe
Superhigh pressure liquid medium is injected, the seamless steel pipe is expanded outwardly to the outer wall and described half of the seamless steel pipe
The inwall fitting of finished product die, is then made annealing treatment, so as to obtain the seamless steel pipe after first bulging.
The concrete operations of first bulging are as follows：The seamless steel pipe is placed in the lower mould of semi-finished product mould, on
Mould is descending, and after matched moulds, superhigh pressure liquid medium is injected into described seamless steel pipe using extra high voltage system,
It is produced high pressure, while also apply axial thrust at the both ends of pipe, carry out feed supplement, be situated between in superhigh pressure liquid
In the presence of matter and axial thrust, seamless steel pipe material is plastically deformed, and finally interior with semi-finished product mould
Wall is bonded.
Wherein, superhigh pressure liquid medium can be emulsion, resistance to force feed or water, and its pressure general control is
In the range of 200-400Mpa.Extra high voltage system can be pressurized cylinder or super-pressure pump.
The middle cross section of seamless steel pipe after the first bulging is square.If in blanking step, interception
The cross section of seamless steel pipe is circle, then the cross-sectional deformation at the middle part of seamless steel pipe is side after first bulging
Shape.If in blanking step, the cross section of the seamless steel pipe of interception is square, then seamless after first bulging
The cross-sectional deformation at the middle part of steel pipe fits square for the inwall with the semi-finished product mould.
It is to eliminate the residual stress after first bulging to take annealing herein.
Step 3, punching：Made a call at a distance in the middle part of seamless steel pipe after the middle part expander a pair it is symmetrical
Hole.Pitch of holes between a pair of symmetrical holes determines according to the arc length among axle housing.
Step 4, otch：Cut between the pair of symmetrical holes along the axial direction of the seamless steel pipe, form one
The individual otch being axially distributed.
Step 5, final bulging：Seamless steel pipe after the otch is placed in finished product die, to the otch
Insertion supporter in the cavity of seamless steel pipe afterwards, make the incision dilatating and deformable of the seamless steel pipe to the nothing
The outer wall of seam steel pipe is bonded with the inwall of the finished product die, so as to obtain the banjo axle.
In a preferred embodiment, the final bulging step is the cavity to the seamless steel pipe after the otch
In fill in rubber bag tank, and high-pressure liquid medium is injected into the rubber bag tank, while to the two of the seamless steel pipe
End applies axial load, to cause the incision dilatating and deformable of the seamless steel pipe to the outer wall of the seamless steel pipe
It is bonded with the inwall of the finished product die.
Wherein, high-pressure liquid medium can also be emulsion, resistance to force feed or water, and its Stress control is in 100-
In the range of 300Mpa.
In a further advantageous embodiment, the final bulging step is into the seamless steel pipe after the otch
Polyurethane rod is inserted in chamber to produce pressure, while applies axial load at the both ends of the seamless steel pipe, makes institute
Incision dilatating and deformable to the outer wall of the seamless steel pipe and the inwall of the finished product die for stating seamless steel pipe pastes
Close.
Fig. 2 is that the cross section in the middle part of the seamless steel pipe in process chart shown in Fig. 1 in step 5 pushes away over time
The variation diagram of shifting.Referring to Fig. 2, wherein, a is the signal of cross section of time when being 2.5s in the middle part of seamless steel pipe
Figure, b are the schematic diagrames of cross section of time when being 14.5s in the middle part of seamless steel pipe, c be the time when being 25s without
The schematic diagram of the cross section in the middle part of steel pipe is stitched, d is the signal of cross section of time when being 35s in the middle part of seamless steel pipe
Figure.It can be seen that over time, the cross section in the middle part of seamless steel pipe constantly swells until and mould
Has the fitting of die cavity inwall.
Step 6, excision allowance：To two tip cut-off allowance of seamless steel pipe, so that its length meets
Required length.
Step 7, welding：The welding step is that both sides are respectively welded at the seamless steel pipe intermediate openings
Oil sump and shrouding, to form complete banjo axle.
So far, it is possible to obtain required banjo axle.
It should be noted that the final bulging step in first bulging step and step 5 in step 2 is
Cold machine-shaping.
Embodiment 1：
Step 1, blanking：From the seamless steel pipe of certain size, 1000mm therein is intercepted.Wherein, nothing
The cross section for stitching steel pipe is square.
Step 2, first bulging：The seamless steel pipe is placed in the lower mould of semi-finished product mould, under mold
OK, after matched moulds, superhigh pressure liquid medium is injected into described seamless steel pipe using extra high voltage system, makes its production
Raw high pressure, while also apply axial thrust at the both ends of pipe, feed supplement is carried out, in superhigh pressure liquid medium and axle
To in the presence of thrust, seamless steel pipe material is plastically deformed, and finally the inwall with semi-finished product mould pastes
Close.
Step 3, punching：In the middle part of seamless steel pipe after the middle part expander it is separated by a distance make a call to a pair it is symmetrical
Hole.
Step 4, otch：Cut between the pair of symmetrical holes along the axial direction of the seamless steel pipe, form one
The individual otch being axially distributed.
Step 5, final bulging：Fill in rubber bag tank into the cavity of the seamless steel pipe after the otch, and to institute
State and high-pressure liquid medium is injected in rubber bag tank, while apply axial load to the both ends of the seamless steel pipe, so that
The seamless steel pipe incision dilatating and deformable to the outer wall of the seamless steel pipe and the inwall of the finished product die
Fitting.
Step 6, excision allowance：To two tip cut-off allowance of seamless steel pipe, so that its length meets
Required length.So far, it is possible to obtain required banjo axle.
Step 7, welding：The welding step is that both sides are respectively welded at the seamless steel pipe intermediate openings
Oil sump and shrouding.
So far, it is possible to obtain required banjo axle.
Embodiment 2：
Step 1, blanking：From the seamless steel pipe of certain size, 1500mm therein is intercepted.Wherein, nothing
The cross section for stitching steel pipe is circle.
Step 2, first bulging：The seamless steel pipe is placed in the lower mould of semi-finished product mould, under mold
OK, after matched moulds, superhigh pressure liquid medium is injected into described seamless steel pipe using extra high voltage system, makes its production
Raw high pressure, while also apply axial thrust at the both ends of pipe, feed supplement is carried out, in superhigh pressure liquid medium and axle
To in the presence of thrust, seamless steel pipe material is plastically deformed, and finally the inwall with semi-finished product mould pastes
Close.
Step 3, punching：In the middle part of seamless steel pipe after the middle part expander it is separated by a distance make a call to a pair it is symmetrical
Hole.
Step 4, otch：Cut between the pair of symmetrical holes along the axial direction of the seamless steel pipe, form one
The individual otch being axially distributed.
Step 5, final bulging：Polyurethane rod is inserted into the inner chamber of the seamless steel pipe after the otch to produce
Pressure, while apply axial load at the both ends of the seamless steel pipe, expand the incision of the seamless steel pipe
The outer wall for being deformed into the seamless steel pipe is bonded with the inwall of the finished product die.
Step 6, excision allowance：To two tip cut-off allowance of seamless steel pipe, so that its length meets
Required length.
Step 7, welding：The welding step is that both sides are respectively welded at the seamless steel pipe intermediate openings
Oil sump and shrouding.
So far, it is possible to obtain required banjo axle.
Presently preferred embodiments of the present invention is the foregoing is only, is not intended to limit the invention, all essences in the present invention
God any modification, equivalent substitution and improvements made etc., should be included in the protection of the present invention with principle
Within the scope of.
Claims (10)
1. the forming method of a kind of banjo axle for vehicle, it is characterised in that comprise the following steps：
Blanking, according to the length of required banjo axle, intercept seamless steel pipe；
First bulging, the seamless steel pipe is placed in semi-finished product mould, injects superelevation into the seamless steel pipe
Press liquid medium, the seamless steel pipe is set to expand outwardly to the outer wall of the seamless steel pipe and the semi-finished product mould
Inwall fitting, then made annealing treatment, so as to obtain the seamless steel pipe after first bulging；
Punch, a pair of symmetrical holes are made a call at a distance in the middle part of the seamless steel pipe after the middle part expander；
Otch, otch is carried out along the axial direction of the seamless steel pipe between the pair of symmetrical holes, after obtaining otch
Seamless steel pipe；
Final bulging, the seamless steel pipe after the otch is placed in finished product die, to seamless after the otch
Insertion supporter in the cavity of steel pipe, make the incision dilatating and deformable of the seamless steel pipe to the seamless steel pipe
Outer wall is bonded with the inwall of the finished product die, so as to obtain the banjo axle.
2. the forming method of the banjo axle according to claim 1 for vehicle, its feature exist
In in blanking step, the length of the seamless steel pipe of interception is 1000mm-1500mm.
3. the forming method of the banjo axle according to claim 1 or 2 for vehicle, its feature
It is, the first bulging step is specifically to inject super-pressure into described seamless steel pipe using extra high voltage system
Liquid medium, the middle cross section of the seamless steel pipe after the first bulging is square.
4. the forming method of the banjo axle for vehicle according to any one of right 1-3, it is special
Sign is that the final bulging step is that rubber bag tank is filled in into the cavity of the seamless steel pipe after the otch, and
High-pressure liquid medium is injected into the rubber bag tank, while applies axial load to the both ends of the seamless steel pipe,
To cause outer wall and the finished product die of the incision dilatating and deformable of the seamless steel pipe to the seamless steel pipe
Inwall is bonded.
5. the forming method of the banjo axle for vehicle according to any one of right 1-3, it is special
Sign is, the final bulging step be inserted into the inner chamber of the seamless steel pipe after the otch polyurethane rod with
Pressure is produced, while applies axial load at the both ends of the seamless steel pipe, makes the incision of the seamless steel pipe
The outer wall of dilatating and deformable to the seamless steel pipe is bonded with the inwall of the finished product die.
6. the forming method of the banjo axle for vehicle according to any one of claim 1-5,
Characterized in that, for the banjo axle obtained after bulging step, in addition to more than the processing of its two tip cut-off
The step of amount.
7. the forming method of the banjo axle for vehicle according to any one of claim 1-6,
Characterized in that, the first bulging step and the final bulging step are cold machine-shaping.
8. the forming method of the banjo axle for vehicle according to any one of claim 1-7,
Characterized in that, in blanking step, the cross section of the seamless steel pipe is circular or square.
9. the forming method of the banjo axle for vehicle according to any one of claim 1-8,
Characterized in that, in first bulging step, the both ends of the seamless steel pipe are sealings.
10. the shaping side of the banjo axle for vehicle according to any one of claim 6-9
Method, it is characterised in that for the banjo axle obtained after excision allowance step, in addition to weld
Step, the welding step are that oil sump and envelope is respectively welded in both sides at the seamless steel pipe intermediate openings
Plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610355960.9A CN107433306A (en) | 2016-05-25 | 2016-05-25 | A kind of forming method of banjo axle for vehicle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610355960.9A CN107433306A (en) | 2016-05-25 | 2016-05-25 | A kind of forming method of banjo axle for vehicle |
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| CN107433306A true CN107433306A (en) | 2017-12-05 |
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| CN201610355960.9A Pending CN107433306A (en) | 2016-05-25 | 2016-05-25 | A kind of forming method of banjo axle for vehicle |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108838270A (en) * | 2018-08-27 | 2018-11-20 | 广东思豪内高压科技有限公司 | A kind of water swelling moulding process of universal joint for automobile |
| CN110153264A (en) * | 2019-04-22 | 2019-08-23 | 秦皇岛通桥科技有限公司 | The integral forming method of coaxial-type electric automobile drive axle axle housing |
| CN112453238A (en) * | 2020-11-17 | 2021-03-09 | 燕山大学 | Stamping forming method of integral axle housing bridge package |
| CN114789217A (en) * | 2022-04-27 | 2022-07-26 | 广东轻量科技发展有限责任公司 | Automobile axle housing, automobile axle housing mold and forming method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108838270A (en) * | 2018-08-27 | 2018-11-20 | 广东思豪内高压科技有限公司 | A kind of water swelling moulding process of universal joint for automobile |
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| CN112453238A (en) * | 2020-11-17 | 2021-03-09 | 燕山大学 | Stamping forming method of integral axle housing bridge package |
| CN112453238B (en) * | 2020-11-17 | 2023-06-16 | 燕山大学 | Stamping forming method of integral axle housing and axle package |
| CN114789217A (en) * | 2022-04-27 | 2022-07-26 | 广东轻量科技发展有限责任公司 | Automobile axle housing, automobile axle housing mold and forming method |
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Application publication date: 20171205 |
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