CN108555131A - A kind of high strength steel A types car Rear secondary frame for vehicle torsion beam manufacturing method - Google Patents
A kind of high strength steel A types car Rear secondary frame for vehicle torsion beam manufacturing method Download PDFInfo
- Publication number
- CN108555131A CN108555131A CN201810352877.5A CN201810352877A CN108555131A CN 108555131 A CN108555131 A CN 108555131A CN 201810352877 A CN201810352877 A CN 201810352877A CN 108555131 A CN108555131 A CN 108555131A
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- China
- Prior art keywords
- pressure
- torsion beam
- reducing
- tubing
- secondary frame
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- 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.)
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Classifications
-
- 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
- B21D35/00—Combined processes according to or processes combined with methods covered by groups B21D1/00 - B21D31/00
- B21D35/002—Processes combined with methods covered by groups B21D1/00 - B21D31/00
-
- 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
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P2700/00—Indexing scheme relating to the articles being treated, e.g. manufactured, repaired, assembled, connected or other operations covered in the subgroups
- B23P2700/50—Other automobile vehicle parts, i.e. manufactured in assembly lines
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
A kind of high strength steel A types car Rear secondary frame for vehicle torsion beam manufacturing method, including：Selection：Selection matter label CP800,590DP, DP780, DP980 or the therewith kind of similar performance.Reducing：By reduced diameter portion is not pushed down among tubing on forcing press, in two end cap reducing molds, to tubing among promote reducing mold.Preform：Be conducive to the piece pre-forming die that high pressure in again forms final pressure product with cavity, manage interior pressurization, obtain performing member；Interior high-pressure molding：Preformed member is placed in mold, is molded on interior high-pressure molding press, shot-peening：The area of stress concentration shot-peening of internal high-pressure molding part forms the compressive stress layer for offsetting tensile stress on tensile stress concentration zones surface；It is punched by design size, obtains product.The positive effect of the present invention is：Feasible technical solution is provided to manufacture A type minibus Rear secondary frame for vehicle complexity torsion beams with high-pressure molding in high tensile steel tube, formed precision is high, and fatigue strength is more than 1,000,000 times, and tensile strength is more than 590 MPa.
Description
Technical field
The invention belongs to automobile manufacturing fields, and in particular to manufacture car Rear secondary frame for vehicle torsion beam with high strength linepipe.
Background technology
A type vehicles in station wagon（Discharge capacity is equal to, is less than 1.6 liters）In, torsion is used also in some brand Rear secondary frame for vehicle
Power beam.Traditional high intensity torsion beam is divided into plank and pipe beam punch forming, and plate forming is open type torsion beam, i.e., by plank
It is shaped to U-shaped or V-type.Tubing is cold stamping shaped, for tubing middle section is pressed into U or V-type both ends recycling servo-cylinder
Control port mold reaches the molding purpose in both ends.
The shortcoming of both the above molding mode is：
Torsion beam is manufactured by blank cold stamping of high-strength panel, although formed precision is higher, efficiency is also higher, monomer thickness
Generally will be in 6mm or more, 15 kilograms of piece weight or more.In addition also to increase a pull rod among open head torque beam, make entire
The weight of part further increases.The way for widening board dimension and then dispersive stress is often taken for region of stress concentration,
Although effectively, and increasing piece weight.With plate forming torsion beam, it is difficult to meet the theory of automotive light weight technology loss of weight.
Torsion beam is manufactured by blank cold stamping of high strength linepipe, it is opposite that torsion beam is manufactured with slab, it is strong in identical entirety
Under the conditions of degree, weight can be significantly reduced, it is corresponding to the theory of automotive light weight technology loss of weight, but monomer formed precision is poor, and nothing
Method realizes the axial product for having negative angle, and the transitional region due to being stretched in U or V-shaped during tube forming can form one
Tensile stress concentrated area, causing this region to be cracked in fatigue test leads to fatigue failure so that the product fatigue of such technique
Intensity is low-down.Or selecting low-intensity material generally for the fatigue strength for improving this torque tube beam, material is improved
Ductility so that improve fatigue strength, or integrally annealed processing release stress is carried out to tubing after molding, but at annealing
Reason rear surface can form oxide skin, and postorder will also increase surface treatment procedure.Especially close to the part of port if there is negative
When angle, without corresponding treatment process.
Invention content
The object of the present invention is to provide a kind of high strength steel A types car Rear secondary frame for vehicle torsion beam manufacturing methods, for height
Strength linepipe produces torsion beam, overcomes and manufactures torsion beam above shortcomings with tubing cold stamping in the prior art.
The method of the present invention includes：Material is selected, reducing processing, punching press are preforming, interior high-pressure molding, bead, after
Continuous processing,
The material is selected to include：Caliber, wall thickness, material, wherein caliber in identical as the intermediate equivalent diameter of torsion beam,
The material of tubing is chosen to be such as quality label CP800,590DP, DP780, DP980 or the therewith kind of similar performance
The reducing is handled：
For manufactured torsion beam be equivalent diameter be product small in ends broad in the middle, before punch forming then need carry out reducing
Processing, processing method are：With mold by reduced diameter portion is not pushed down among tubing on forcing press, in tubing both ends servo-cylinder
The reducing mold of pressurized control stops deforming moulds propulsion to propulsion among tubing, when reaching scheduled distance, and form removal obtains middle part
Former diameter is kept, pipe is molded in the high pressure that both ends attenuate, for manufacturing the torsion beam that two end sections are big, intermediate cross-section is small, does not have
Reducing treatment process steps.
The preform is：Be conducive to the piece pre-forming die that high pressure in again forms final pressure product, intraluminal fluid with cavity
Pressure pressurization, makes performing member；
Interior high-pressure molding：Preformed member is placed in final molding mold and is molded on interior high-pressure molding press, operation process is
Upper/lower die closure, blank cavity water filling pressurization, blank both ends axial oil cylinder cylinder body carried out according to the technique of establishment it is inside
Portion's pusher, until technique executes completion.
The bead is：Surfaces externally and internally bead is carried out to the area of stress concentration of pipe fitting using shot blasting equipment,
A compressive stress layer, the tensile stress for offsetting product are formed on the tensile stress concentration zones surface of pipe fitting；
The postorder is handled：It cuts or is punched by design size, obtain high strength steel A type car Rear secondary frame for vehicle torsion beams.
The positive effect of the present invention is：To manufacture A type minibus Rear secondary frame for vehicle complexity torsion with molding in high tensile steel tube
Beam provides feasible technical solution, and formed precision height, unstressed concentration zones, intensity is high, and fatigue strength is more than 1,000,000 times, and
The torsion beam of prior art manufacture can reach 4 times or more compared to increase rate.Tensile strength is more than 590 MPa.There is work simultaneously
Skill process is easy to operate, the low advantage of manufacturing cost.
Description of the drawings
Fig. 1 is tube billet reducing process schematic representation.
Fig. 2 is the stress concentration section of bead in torsion beam.
Specific implementation mode
By taking the A vehicles of certain domestic brand as an example,
The steel pipe of caliber 103mm, 3.0-3.5mm of wall thickness, quality label CP800 or 590DP or DP780 or DP980 materials are selected,
It is cut into blank.
Refering to fig. 1, for manufactured torsion beam be equivalent diameter be product small in ends broad in the middle, used on forcing press
Upper swaging die 1, lower swaging die 2 push down 3 middle section of pipe, cover upper right reducing mold 4 and left reducing mold at tubing both ends
5, with the reducing mold of servo-cylinder pressurized control to propulsion among tubing, pushed away when reaching scheduled distance stopping deforming moulds
Into oil pressure pressure 25MPa, left and right becomes electrical path length 600mm reduced diameter portion diameter 96mm, non-reduced diameter portion and reduced diameter portion transition
Distance is 300mm；
It is preforming：Be conducive to high pressure in again with cavity and form the piece pre-forming die of final pressure product, with the hydraulic press of tonnage 400T,
Interior high pressure makes performing member；
Interior high-pressure molding：Preformed member is placed in final pressure shaped article mold, on interior high-pressure forming machine, applies internal pressure
210MPa, left and right oil cylinder feed feed supplement length 33mm；
Bead：Bead is carried out to the blacking position in Fig. 2, shot-peening parameter is bullet：The steel wire bullet shot-peening time
For 45S-90S, pressure 0.1MPa-0.2MPa, shot-peening coverage rate 100% is obtained according to different tubing and almen test result
The data setting obtained；
Subsequent processing：The product after shot-peening is cut or rushed, complies with design size, after final high strength steel A type cars
Subframe torsion beam.
Claims (1)
1. a kind of high strength steel A types car Rear secondary frame for vehicle torsion beam manufacturing method, it is characterized in that：Including：Material is selected, at reducing
It manages, punching press is preforming, interior high-pressure molding, bead, subsequent processing；
The material is selected to include：Caliber, wall thickness, material, wherein caliber in identical as the intermediate equivalent diameter of torsion beam,
The material of tubing is chosen to be such as quality label CP800,590DP, DP780, DP980 or the therewith kind of similar performance；
The reducing is handled：
For manufactured torsion beam be equivalent diameter be product small in ends broad in the middle, before punch forming then need carry out reducing
Processing, processing method are：With mold by reduced diameter portion is not pushed down among tubing on forcing press, in tubing both ends servo-cylinder
The reducing mold of pressurized control stops deforming moulds propulsion to propulsion among tubing, when reaching scheduled distance, and form removal obtains middle part
Former diameter is kept, pipe is molded in the high pressure that both ends attenuate, for manufacturing the torsion beam that two end sections are big, intermediate cross-section is small, does not have
Reducing treatment process steps；
The preform is：Be conducive to the piece pre-forming die that high pressure in again forms final pressure product with cavity, intraluminal fluid pressure adds
Pressure makes performing member；
Interior high-pressure molding：Preformed member is placed in final molding mold and is molded on interior high-pressure molding press, operation process is
Upper/lower die closure, blank cavity water filling pressurization, blank both ends axial oil cylinder cylinder body carried out according to the technique of establishment it is inside
Portion's pusher, until technique executes completion；
The bead is：Surfaces externally and internally bead is carried out to the area of stress concentration of pipe fitting using shot blasting equipment, in pipe
The tensile stress concentration zones surface of part forms a compressive stress layer, the tensile stress for offsetting product；
The postorder is handled：It cuts or is punched by design size, obtain high strength steel A type car Rear secondary frame for vehicle torsion beams.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810352877.5A CN108555131B (en) | 2018-04-19 | 2018-04-19 | Manufacturing method of high-strength steel torsion beam of rear auxiliary frame of A-type car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810352877.5A CN108555131B (en) | 2018-04-19 | 2018-04-19 | Manufacturing method of high-strength steel torsion beam of rear auxiliary frame of A-type car |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108555131A true CN108555131A (en) | 2018-09-21 |
| CN108555131B CN108555131B (en) | 2020-12-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810352877.5A Active CN108555131B (en) | 2018-04-19 | 2018-04-19 | Manufacturing method of high-strength steel torsion beam of rear auxiliary frame of A-type car |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022022692A1 (en) * | 2020-07-31 | 2022-02-03 | 宝山钢铁股份有限公司 | Steel plate for torsion beam and manufacturing method therefor, and torsion beam and manufacturing method therefor |
| CN114749509A (en) * | 2022-04-02 | 2022-07-15 | 上海汇众汽车制造有限公司 | Unequal-thickness tubular torsion beam and manufacturing method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102505068A (en) * | 2011-09-30 | 2012-06-20 | 上海交通大学 | Method for improving surface performance of titanium-based composite material by pre-stress shot blasting |
| CN102616278A (en) * | 2012-04-10 | 2012-08-01 | 北京汽车股份有限公司 | Vehicle front fingerboard and forming method thereof |
| JP2016022479A (en) * | 2014-07-16 | 2016-02-08 | 株式会社ワイテック | Torsion beam molding die |
| CN105568140A (en) * | 2016-03-02 | 2016-05-11 | 江苏九龙汽车制造有限公司 | Torsion beam preparation method |
| KR20160077244A (en) * | 2014-12-22 | 2016-07-04 | 주식회사 동희산업 | Apparatus for manufacturing torsion beam |
-
2018
- 2018-04-19 CN CN201810352877.5A patent/CN108555131B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102505068A (en) * | 2011-09-30 | 2012-06-20 | 上海交通大学 | Method for improving surface performance of titanium-based composite material by pre-stress shot blasting |
| CN102616278A (en) * | 2012-04-10 | 2012-08-01 | 北京汽车股份有限公司 | Vehicle front fingerboard and forming method thereof |
| JP2016022479A (en) * | 2014-07-16 | 2016-02-08 | 株式会社ワイテック | Torsion beam molding die |
| KR20160077244A (en) * | 2014-12-22 | 2016-07-04 | 주식회사 동희산업 | Apparatus for manufacturing torsion beam |
| CN105568140A (en) * | 2016-03-02 | 2016-05-11 | 江苏九龙汽车制造有限公司 | Torsion beam preparation method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022022692A1 (en) * | 2020-07-31 | 2022-02-03 | 宝山钢铁股份有限公司 | Steel plate for torsion beam and manufacturing method therefor, and torsion beam and manufacturing method therefor |
| CN114749509A (en) * | 2022-04-02 | 2022-07-15 | 上海汇众汽车制造有限公司 | Unequal-thickness tubular torsion beam and manufacturing method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108555131B (en) | 2020-12-18 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A manufacturing method for the torsion beam of the rear subframe of a high-strength steel A-type sedan Effective date of registration: 20230925 Granted publication date: 20201218 Pledgee: Bank of China Limited Liaoyuan Branch Pledgor: JILIN ZHENGXUAN FRAME CO.,LTD. Registration number: Y2023220000097 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |