CN106042816A - Multi-weld-pass high-strength car torsion beam with unequal wall thicknesses and forming method thereof - Google Patents
Multi-weld-pass high-strength car torsion beam with unequal wall thicknesses and forming method thereof Download PDFInfo
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- CN106042816A CN106042816A CN201610447096.5A CN201610447096A CN106042816A CN 106042816 A CN106042816 A CN 106042816A CN 201610447096 A CN201610447096 A CN 201610447096A CN 106042816 A CN106042816 A CN 106042816A
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- torsion beam
- wall thickness
- high pressure
- pressure forming
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G21/00—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces
- B60G21/02—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected
- B60G21/04—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected mechanically
- B60G21/05—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected mechanically between wheels on the same axle but on different sides of the vehicle, i.e. the left and right wheel suspensions being interconnected
- B60G21/051—Trailing arm twist beam axles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/08—Making tubes with welded or soldered seams
-
- 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)
- Vehicle Body Suspensions (AREA)
Abstract
The invention discloses a multi-weld-pass high-strength car torsion beam with unequal wall thicknesses. The multi-weld-pass high-strength car torsion beam with the unequal wall thicknesses comprises a crossbeam transversely arranged in the car width direction. The crossbeam is a groove rod-shaped part with the section being in a V shape. Two longitudinal beams are symmetrically fixed to the two ends of the crossbeam correspondingly. The crossbeam is formed by welding high-strength plates with unequal wall thicknesses in a spliced mode. Large stress zones are arranged on the two sides of an opening of the V-shaped cross section and bear large stress from the outside. A small stress zone is arranged in the closed position at the bottom of the V-shaped cross section and bears small stress from the outside. The wall thickness of the large stress zones is at least 1 mm greater than that of the small stress zone. The maximum deformation amount of the large stress zones and the small stress zone is 37.19 mm, and the maximum torsional strength is 502 N/mm<2> MPa.
Description
Technical field
The present invention relates to a kind of torsion beam, particularly relate to the high intensity of a kind of many welding beads do not wait wall thickness automobile torsion beam and
Its forming technology, it is increasing the deformation of original torsion beam and yield strength and is improve the same of product structure and security performance
Time, reduce the difficulty of processing of product, alleviate total quality, the most more meet the demand of automotive light weight technology, and whole work
Process flow is more quick, improves production efficiency.
Background technology
Torsion beam, is called again torsion beam, is arranged on automobile hanging, and its two ends are connected to a wheel, and it is main
If being used for balancing the bob of left and right wheels, to reduce rocking of vehicle, keep the steady of vehicle.
In prior art, it is common that the sheet material of the wall thickness such as employing manufactures torsion beam, its concrete manufacturing process has punching press
Shaping or internal high pressure forming etc., such as in the Chinese invention patent of Patent No. 201410118246.9, applicant's Golconda
Steel stock Co., Ltd discloses a kind of pipe fitting torsion beam press-processing method, comprises the following steps: 1) determine that pipe fitting is turned round
Power girder construction feature, is in turn divided into interlude, changeover portion and end three region from middle to two ends by pipe fitting torsion beam, and
To selected characteristic cross section, each region, obtain characteristic cross-section line, i.e. V-arrangement, U-shaped, rectangle according to characteristic cross-section, and design punching with this
Compression mould upper and lower mould；2) 2～5 passage substeps are used to rush the regional of the pipe as raw material according to above-mentioned section line feature
Pressing formation mode forms, and during forming of transition section, changeover portion region is inserted plug, and plug overall size compares transition
Section characteristic cross-section is little；3) pipe fitting end is carried out shaping processing, use shaping mould to insert the pipe between diel upper and lower mould
In part, shaping mould front shape size is basically identical with the shape size of the changeover portion of torsion beam finished product, end, with this to pipe
Part end fillet and profile carry out shaping, thus reach predetermined torsion beam profile.
The most such as in the Chinese invention patent of Patent No. 201410705725.0, applicant Xi'an Communications University is open
The low pressure internal high pressure forming device of a kind of torsion beam, including torsion beam internal high pressure forming mould, the servo pressure of Dual-motors Driving
Force control device and charging loop, charging loop by pressure duct respectively with the watching of torsion beam shaping dies and Dual-motors Driving
Taking pressure control device connection, torsion beam internal high pressure forming mould includes upper die and lower die, the servo pressure control of Dual-motors Driving
Device processed includes pressure cylinder, and the piston rod in pressure cylinder is connected with sliding panel, and two straight-bars are through sliding panel, two ball-screws
Nut is connected on sliding panel, and servomotor is connected with ball-screw, the invention belongs to " passive internal high pressure forming ", it is not necessary to superelevation
Potential source provides hyperpressure, and the fluid pressure within tubing is moved down the sealing with tubing internal liquid by mould and produces, and it is right to reduce
The requirement in high voltage power source, reduces technology difficulty.
Torsion beam has the requirement of torsional rigidity in the position of reversing of two side ends on its V-arrangement cross section, and other positions need not reach
To the torsional rigidity as two side ends on V-arrangement, if use existing several technique to manufacture torsion beam, its shape after,
The wall thickness at each position is all equal, it is meant that the torsional rigidity at other positions is also consistent with the torsional rigidity of two side ends, if
Want to accomplish lightweight, then raw-material processing quality is required the highest, add difficulty and the complexity of processing technique, add
Manufacturing cost.If using the raw material of relative low strength to manufacture, then needing increase wall thickness to improve rigidity, this also increases
The weight of torsion beam, does not meets the light-weighted trend of auto industry.
Summary of the invention
The technical problem to be solved is to provide the high intensity of a kind of many welding beads for the above-mentioned state of the art
Not waiting wall thickness automobile torsion beam and forming technology thereof, it, on the basis of ensureing original torsional rigidity, reduces the processing of product
Difficulty, alleviates total quality, the most more meets the demand of automotive light weight technology.
For achieving the above object, the invention provides following technical scheme:
The high intensity of a kind of many welding beads does not wait wall thickness automobile torsion beam, includes the crossbeam being horizontally placed on overall width direction, described crossbeam
For the groove rod-like members that cross section is V-shaped, symmetrical at the two ends of described crossbeam being fixed with two trailing arms, described crossbeam is not by
The high-strength panel welding of uniform thickness forms, and is high-stress area territory in the opening both sides of its V-arrangement cross section, carries from outside relatively
Big stress, the make position bottom its V-arrangement cross section is little stress area, carries the stress less from outside, institute
State the wall thickness wall thickness at least 1mm more than described little stress area in high-stress area territory, described high-stress area territory and little stress area
Maximum deformation quantity be 37.19mm, maximum torsional strength is 502N/mm ∧ 2 (MPa).
As the improvement of the present invention, the curved setting of described crossbeam, by securing the two ends of trailing arm towards intermediate recess, and
And two ends are curved with middle joint.
As a further improvement on the present invention, the high-strength panel of described not uniform thickness includes two-layer, two-layer sheet material by
Material of the same race or material the most of the same race are made, and two-layer sheet material welds together.
Preferred as the present invention, described two-layer sheet material is respectively corrosion resistant plate and aluminium alloy plate.
A kind of high intensity manufacturing above-mentioned many welding beads does not wait the forming technology of wall thickness automobile torsion beam, includes following step
Rapid:
1), according to caliber and stress needs, the sheet material that two kinds of the same race or unlike material is made is divided and determines different in width or thickness
The roll bending of degree；
2), by welding mode the roll bending of different-thickness is welded into and reaches the girth width of caliber；
3), it is welded into welded tube with ratio-frequency welding tuber；
4), by preforming technique, welded tube is formed into the shape of needs；
5) work pieces process, shaped after being preformed by with internal high pressure forming equipment goes out required shape；
6), with tube-end forming equipment, workpiece is carried out two end processing, complete product.
As the improvement of the present invention, above-mentioned steps 4) described in preforming technique include following steps:
One, by the welded tube clamping workpiece after welding to stamping machine；
Two, start stamping machine, the local of workpiece is carried out punching press so that it is the form that preliminary arrival is close with target workpiece shape；
Three, the workpiece after punching press is taken out, on clamping to internal high pressure forming equipment.
As a further improvement on the present invention, above-mentioned steps 5) described in internal high pressure forming technique, comprise the following steps that
Step one, by clamping workpiece to internal high pressure forming equipment；
Step 2, start forcing press so that the upper die and lower die matched moulds of internal high pressure forming equipment, workpiece is limited in by upper mold and
In the die cavity that lower mold is constituted, the shape of die cavity is consistent with the shape of target workpiece；
Step 3, startup are positioned at the hydraulic cylinder of internal high pressure forming equipment both sides, hydraulic cylinder secure plug, by Driven by Hydraulic Cylinder
Plug is feeding in die cavity, and by plug, the two ends of workpiece is blocked sealing, has offered runner inside plug；
Step 4, startup booster pump, by the water filling supercharging in workpiece of the runner in plug so that workpiece is under the effect of hydraulic pressure
Outward expansion, until fitting with the inwall of die cavity, i.e. completes internal high pressure forming.
Compared with prior art, it is an advantage of the current invention that: it increase original torsion beam deformation and yield strength and
While improve product structure and security performance, reduce the difficulty of processing of product, alleviate total quality, the most more meet
The demand of automotive light weight technology, and whole technological process is more quick, improves production efficiency.
Accompanying drawing explanation
Fig. 1 is the structural representation that in the embodiment of the present invention, the high intensity of many welding beads does not wait wall thickness automobile torsion beam；
Fig. 2 is the schematic diagram of torsion beam port in embodiment illustrated in fig. 1；
Fig. 3 is the device structure schematic diagram of internal high pressure forming operation in embodiment illustrated in fig. 1.
Detailed description of the invention
With reference to Fig. 1-Fig. 3, the high intensity of welding beads many in the present invention is not waited wall thickness automobile torsion beam and the reality of forming technology thereof
Execute example to be described further.
As shown in Figure 1-Figure 3, the present embodiment is that the high intensity of a kind of many welding beads does not wait wall thickness automobile torsion beam, includes horizontal stroke
Being placed in the crossbeam 1 in overall width direction, described crossbeam is the groove rod-like members that cross section is V-shaped, symmetrical at the two ends of described crossbeam
Be fixed with two trailing arms 2, described crossbeam is formed by the high-strength panel welding of not uniform thickness, at the opening two of its V-arrangement cross section
Side is high-stress area territory 3, carries the stress bigger from outside, and the make position bottom its V-arrangement cross section is little stress
Region 4, carries the stress less from outside, and the wall thickness in described high-stress area territory is more than the wall thickness of described little stress area extremely
Few 1mm, concrete, at high-stress area territory partial thickening 0.5mm, the sheet material 0.5mm of little stress area, now stress area
Maximum distortion be 37.19mm, maximum twist intensity is 502N/mm ∧ 2 (MPa).
Wherein, the high-strength panel of described not uniform thickness includes two-layer, and two-layer sheet material can use same material system
Become, it is also possible to use different materials to make according to actual rigidity, surface flatness, the many needs such as anti-oxidation,
Such as use corrosion resistant plate and aluminium alloy plate, its antioxygenic property, whole torsion beam pipe can be improved while ensureing rigidity
Beam is two pieces or multi-sheets welding welded tube.
Compared with prior art, conventional torsion beam is the product thickeied through interval, after Integral upset 1MM, conventional
The quality of torsion beam has reached 12.35Kg, and now, the maximum distortion of conventional torsion beam stress area is 39.02mm, maximum twist
Intensity is 710 N/mm ∧ 2 (MPa), and the quality of whole torsion beam of different wall is 8.3614Kg, although maximum twist intensity
Less than conventional equal wall thickness torsion beam, but overall weight to be substantially lighter than the torsion beam of routine.
In order to manufacture this torsion beam not waiting wall thickness, the present embodiment have employed following technique:
A kind of high intensity manufacturing above-mentioned many welding beads does not wait the forming technology of wall thickness automobile torsion beam, comprises the following steps that
1), according to caliber and stress needs, the sheet material that two kinds of the same race or unlike material is made is divided and determines different in width or thickness
The roll bending of degree；
2), by welding mode the roll bending of different-thickness is welded into and reaches the girth width of caliber；
3), it is welded into welded tube with ratio-frequency welding tuber；
4), by preforming technique, welded tube is formed into the shape of needs；
5) work pieces process, shaped after being preformed by with internal high pressure forming equipment goes out required shape；
6), with tube-end forming equipment, workpiece is carried out two end processing, complete product.
Wherein, above-mentioned steps 4) described in preforming technique include following steps:
One, by the welded tube clamping workpiece after welding to stamping machine；
Two, start stamping machine, the local of workpiece is carried out punching press so that it is the form that preliminary arrival is close with target workpiece shape；
Three, the workpiece after punching press is taken out, on clamping to internal high pressure forming equipment.
Wherein, above-mentioned steps 5) described in internal high pressure forming technique, comprise the following steps that
Step one, by clamping workpiece to internal high pressure forming equipment；
Step 2, startup forcing press so that the upper mold 5 of internal high pressure forming equipment and lower mold 6 matched moulds, be limited in workpiece by upper mold
With in the die cavity 7 of lower mold composition, the shape of die cavity is consistent with the shape of target workpiece；
Step 3, startup are positioned at the hydraulic cylinder 8 of internal high pressure forming equipment both sides, hydraulic cylinder secures plug, hydraulic cylinder drives
Dynamic plug 9 feeding in die cavity, and by plug, sealing is blocked at the two ends of workpiece, inside plug, offered runner；
Step 4, startup booster pump 10, by the water filling supercharging in workpiece of the runner in plug so that workpiece is in the effect of hydraulic pressure
Lower outward expansion, until fitting with the inwall of die cavity, i.e. completes internal high pressure forming.
In order to manufacture the torsion beam of above-mentioned unequal thickness plate, it is also possible to several techniques below using:
1, thermoforming, i.e. first passes through high temperature and sheet material is carried out heat treatment, then prolongs and is pressed into the template not waiting thickness of slab, then carries out cold
But thus obtain unequal thickness plate, this forming technology can accurately control the wall thickness at each position, but relatively costly, and compares
Relatively time consuming, be not suitable for large batch of torsion beam and produce；
2, the special thickness of slab milling train such as not is used to carry out cold roll forming.Its cardinal principle is to arrange multiple roll, respectively at milling train
Individual roll is all parallel with sheet material, and is being transversely formed difference in height, and in the operation of rolling, each roll acts on and sheet material simultaneously
Surface, owing to being formed with difference in height between each roll, therefore its plate surface rolling out has also been correspondingly formed different-thickness
Template.This manufacturing process is relatively low, and work efficiency is high, it is adaptable to batch production.
But compared with above-mentioned technique, use the mode of welding realizing while two boards material fits tightly, compare
In milling train, cost is lower, and owing to welding and tubulation are carried out on streamline simultaneously, production efficiency is higher.
The above makes the preferred embodiment of the present invention, for the person of ordinary skill of the art without departing from this
On the premise of bright principle, it is also possible to make some modification and improvement, these also should be regarded as protection scope of the present invention.
Claims (7)
1. the high intensity of welding bead more than does not wait a wall thickness automobile torsion beam, includes the crossbeam being horizontally placed on overall width direction, described horizontal stroke
Beam is the groove rod-like members that cross section is V-shaped, symmetrical at the two ends of described crossbeam is fixed with two trailing arms, and its feature exists
In:
Described crossbeam is formed by the high-strength panel welding of not uniform thickness, is high-stress area territory in the opening both sides of its V-arrangement cross section,
Carrying the stress bigger from outside, the make position bottom its V-arrangement cross section is little stress area, carries from outward
The stress that portion is less, the wall thickness in described high-stress area territory is more than the wall thickness at least 1mm of described little stress area, described high-stress area
The maximum deformation quantity of territory and little stress area is 37.19mm, and maximum torsional strength is 502N/mm ∧ 2 (MPa).
The high intensity of many welding beads the most according to claim 1 does not wait wall thickness automobile torsion beam, it is characterised in that: described crossbeam
Curved setting, by securing the two ends of trailing arm towards intermediate recess, and two ends are curved with middle joint.
The high intensity of many welding beads the most according to claim 2 wait wall thickness automobile torsion beam, it is characterised in that: described not
The high-strength panel of uniform thickness includes two-layer, and two-layer sheet material is made up of material of the same race or material the most of the same race, and two-layer sheet material is spelled
Welded together.
The high intensity of many welding beads the most according to claim 3 does not wait wall thickness automobile torsion beam, it is characterised in that: described two
Laminate material is respectively corrosion resistant plate and aluminium alloy plate.
5. the high intensity manufacturing many welding beads as claimed in claim 1 does not wait a forming technology for wall thickness automobile torsion beam, bag
Include and have the following steps:
1), according to caliber and stress needs, the sheet material that two kinds of the same race or unlike material is made is divided and determines different in width or thickness
The roll bending of degree；
2), by welding mode the roll bending of different-thickness is welded into and reaches the girth width of caliber；
3), it is welded into welded tube with ratio-frequency welding tuber；
4), by preforming technique, welded tube is formed into the shape of needs；
5) work pieces process, shaped after being preformed by with internal high pressure forming equipment goes out required shape；
6), with tube-end forming equipment, workpiece is carried out two end processing, complete product.
Forming technology the most according to claim 5, it is characterised in that: the preforming technique described in step 4) includes as follows
Step:
One, by the welded tube clamping workpiece after welding to stamping machine；
Two, start stamping machine, the local of workpiece is carried out punching press so that it is the form that preliminary arrival is close with target workpiece shape；
Three, the workpiece after punching press is taken out, on clamping to internal high pressure forming equipment.
Forming technology the most according to claim 5, it is characterised in that: the internal high pressure forming technique described in step 5), including
Have the following steps:
Step one, by clamping workpiece to internal high pressure forming equipment；
Step 2, start forcing press so that the upper die and lower die matched moulds of internal high pressure forming equipment, workpiece is limited in by upper mold and
In the die cavity that lower mold is constituted, the shape of die cavity is consistent with the shape of target workpiece；
Step 3, startup are positioned at the hydraulic cylinder of internal high pressure forming equipment both sides, hydraulic cylinder secure plug, by Driven by Hydraulic Cylinder
Plug is feeding in die cavity, and by plug, the two ends of workpiece is blocked sealing, has offered runner inside plug；
Step 4, startup booster pump, by the water filling supercharging in workpiece of the runner in plug so that workpiece is under the effect of hydraulic pressure
Outward expansion, until fitting with the inwall of die cavity, i.e. completes internal high pressure forming.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610447096.5A CN106042816A (en) | 2016-06-19 | 2016-06-19 | Multi-weld-pass high-strength car torsion beam with unequal wall thicknesses and forming method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610447096.5A CN106042816A (en) | 2016-06-19 | 2016-06-19 | Multi-weld-pass high-strength car torsion beam with unequal wall thicknesses and forming method thereof |
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| Publication Number | Publication Date |
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| CN106042816A true CN106042816A (en) | 2016-10-26 |
Family
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610447096.5A Withdrawn CN106042816A (en) | 2016-06-19 | 2016-06-19 | Multi-weld-pass high-strength car torsion beam with unequal wall thicknesses and forming method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108216371A (en) * | 2016-12-12 | 2018-06-29 | 本特勒尔汽车技术有限公司 | For the shaft member or vehicle chassis component of automobile |
| CN110560507A (en) * | 2019-10-21 | 2019-12-13 | 大连理工大学 | Forming method of large-diameter special-shaped section thin-wall pipe fitting |
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|---|---|---|---|---|
| CN102825100A (en) * | 2012-09-20 | 2012-12-19 | 上海和达汽车配件有限公司 | Manufacturing method of special-shaped pipe piece with unequal wall thickness |
| US20140053622A1 (en) * | 2012-08-21 | 2014-02-27 | Ford Global Technologies, Llc | Method and apparatus for electro-hydraulic forming |
| CN205009912U (en) * | 2015-10-12 | 2016-02-03 | 浙江摩多巴克斯科技股份有限公司 | Adoption chassis torsion beam that thick plate was made that varies |
-
2016
- 2016-06-19 CN CN201610447096.5A patent/CN106042816A/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140053622A1 (en) * | 2012-08-21 | 2014-02-27 | Ford Global Technologies, Llc | Method and apparatus for electro-hydraulic forming |
| CN102825100A (en) * | 2012-09-20 | 2012-12-19 | 上海和达汽车配件有限公司 | Manufacturing method of special-shaped pipe piece with unequal wall thickness |
| CN205009912U (en) * | 2015-10-12 | 2016-02-03 | 浙江摩多巴克斯科技股份有限公司 | Adoption chassis torsion beam that thick plate was made that varies |
Non-Patent Citations (1)
| Title |
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| 吴礼军等: "《现代汽车制造技术》", 31 January 2013, 国防工业出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108216371A (en) * | 2016-12-12 | 2018-06-29 | 本特勒尔汽车技术有限公司 | For the shaft member or vehicle chassis component of automobile |
| CN110560507A (en) * | 2019-10-21 | 2019-12-13 | 大连理工大学 | Forming method of large-diameter special-shaped section thin-wall pipe fitting |
| CN110560507B (en) * | 2019-10-21 | 2021-01-26 | 大连理工大学 | Forming method of large-diameter special-shaped section thin-wall pipe fitting |
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Application publication date: 20161026 |