CN101811517A - Internal high-pressure formed auxiliary frame and forming method thereof - Google Patents
Internal high-pressure formed auxiliary frame and forming method thereof Download PDFInfo
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- CN101811517A CN101811517A CN201010148615A CN201010148615A CN101811517A CN 101811517 A CN101811517 A CN 101811517A CN 201010148615 A CN201010148615 A CN 201010148615A CN 201010148615 A CN201010148615 A CN 201010148615A CN 101811517 A CN101811517 A CN 101811517A
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Abstract
The invention relates to an internal high-pressure formed auxiliary frame and a forming method thereof. The auxiliary frame has a groined main structure and is formed by welding two longitudinal beams (5 and 19), a front cross beam (3) and a back cross beam. The longitudinal beams (5 and 19) have an internal high-pressure formed cast structure, wherein the cross section thereof is of an irregular shape with a small middle part and two big ends. The internal high-pressure forming method comprises the following steps of: (1) bending a pipeline; (2) flattening a workpiece; (3) hydroforming; (4) scraping edges and processing an auxiliary hole; and (5) washing and treating the surface. The internal high-pressure formed longitudinal beams and the front cross beam can be prevented from being formed by welding upper and lower two stamping parts, so that the materials are saved, the design space is obtained and a light, high-strength, high-precision, energy-saving auxiliary frame device is formed.
Description
Technical field
The present invention relates to a kind of automobile accessory frame and inside high-pressure forming method thereof.
Background technology
At present, traditional automobile accessory frame all adopts the sheet metal component of drawing to be welded, and based on this conventional confguration, causes existing following problem:
In the automobile design process, because the gap needs of power arrangement form (horizontal, vertical putting), suspension frame structure, power system and subframe, make traditional subframe be furnished with difficulty, traditional subframe longeron adopt drawing up and down two be welded, sometimes in order to increase subframe intensity, needing to increase auxiliary reinforced support between the sheet up and down, this has just increased the mold developing of subframe, the cycle of designing and developing and manufacturing cost have been increased, also cause the huge waste of mould, be unfavorable for alleviating of complete vehicle weight to a certain extent.
In the Automobile manufacturing process, traditional subframe the increase of part must cause the increase of mould, positioning tool, welding jig owing to the needs of intensity cause, is unfavorable for batch manufacturing.
Therefore, need improve existing subframe, make on arranging, feasible on the structure, function, assembling, manufacturing, technology, improve greatly and design and develop speed, cost-cutting reduces complete vehicle weight, improves the car load economy.
Summary of the invention
Based on above background technology, the technical problem to be solved in the present invention provides a kind of internal high pressure forming subframe, make that complete vehicle weight alleviates, material saving, product modular, raising subframe bulk strength, enhance product performance and precision, and can reduce half-finished parts quantity in process of production, reduce back processed such as welding, machine up and product assembly process, effectively reduce production costs, alleviate complete vehicle weight, shorten the process-cycle.
To achieve these goals, subframe structure of the present invention has following formation:
A kind of internal high pressure forming subframe, agent structure are " well " font, are welded by two longerons, a front cross rail, an after cross member, and longeron is the cylinder structure of internal high pressure forming, the big non-regular shape in little two in the middle of its cutting plane is.Front cross rail is the cylinder structure of internal high pressure forming, and its cutting plane is constant regular shape.About two longerons and front cross rail, after cross member up and down sheet be welded together to form integral frame earlier, then brace panel, swing arm support, mounting bracket, stabilizer bar arm are passed through knock hole separately, be welded on the subframe, at last, four lining Socket weldings are connected on the subframe, thereby reach the size and the Geometrical Tolerance Principle of product.
Subframe longeron and/or front cross rail adopt pipe fitting internal high pressure forming technology, be applicable to the structure pipe fitting of the difform hollow of equal thickness, method is earlier tubing to be carried out first road bending operation, carrying out operation 2 then claps flat, carry out the 3rd procedure hydraulic forming again, be about to be placed in the shaping dies through the tubing that operation 2 is handled, be pressed into high-pressure fluid by pipe fitting inside, and at the axial direction of the tubing compensating pipe material of exerting pressure, the pipe material is pressed into the cavity body of mould internal shaping, follow and promptly cut edge by operation 4, the processing of auxiliary hole, method are that longeron is carried out the end, the laser beam cutting of knock hole, last procedure is to clean, surface treatment etc.
Compare with the subframe that the traditional sheet metal component of sheet up and down drawing is welded again, subframe of the present invention is spatially compacter.Longeron, front cross rail adopt inside high-pressure forming method, are different from traditional casting subframe and sheet metal component sheet punching press welding technique up and down, can reach and reduce framing member number of parts, welding sequence and shorten assembly process, reach the target of expendable weight and cost-cutting.
According to a kind of preferred design of the present invention, the cross-sectional plane of subframe longeron part at least is circular or oval, and longeron is partial design triangularity or oblong at least also.
Can arrange according to the chassis in the design process (driving engine, transmission shaft, stabilizer rod etc.) and with longeron near the needs of quiet movement clearance of associated part, the longeron cross-sectional plane is changed, principle is: supposition longeron blank section girth is L, after design, the longeron section girth is L1, so the value of (L1-L)/L*100% gained should be less than or equal to 35%.
In the design process, consider the needs of shaping, welding, assembling, all designed two knock holees at the position, front and back of each longeron.
The intensity Q of inner high voltage longeron becomes the first power proportional relation with its pipe fitting thickness h, and S becomes the quadratic power proportional relation with the pipe fitting cross-sectional area, so in the design process of the intensity Q of optimizing longeron, following three kinds of schemes can be arranged:
1, changes the material of longeron;
2, change the thickness h of longeron;
3, change the cross-sectional area S of longeron.
Subframe beneficial effect of the present invention is specific as follows:
1, subframe of the present invention has alleviated weight with traditional subframe: compare with the punching press weldment, internal high pressure forming longeron, front cross rail framing member can reduce 20%～30%;
2, subframe of the present invention is compared with traditional subframe, internal high pressure forming spare only needs a mold usually, and the punching press weldment is welded by a plurality of blanked parts, therefore need the diel of many covers,, saved the mould development cost so neoteric subframe shortens the design cycle greatly, saved and produced investment, reduce the cost of product, improved competitiveness of product, increased the profit of automobile enterprise;
3, subframe of the present invention is compared with traditional subframe, reduces half-finished parts quantity: but time processing goes out longeron, front cross rail in forming process.Compare with the punching press weldment, subframe longeron, front cross rail part reduce to 2 by 4, have made things convenient for the modularization of chassis member;
4, subframe of the present invention is compared with traditional subframe, has improved intensity, rigidity and strength at repeated alternation: liquid tool cooling effect in the forming process, and make workpiece by " cold work reinforced ", obtain the workpiece strength higher than general punch process;
Description of drawings:
Describe the present invention in detail by embodiment shown in the drawings below, be illustrated as:
Fig. 1 is the plan structure scheme drawing of internal high pressure forming subframe of the present invention,
Fig. 2 is the block diagram of the longeron of subframe shown in Figure 1,
Fig. 3 is the birds-eye view of the longeron of subframe shown in Figure 2,
Fig. 4 is the section drawing of the longeron of subframe shown in Figure 2 along the A-A line,
Fig. 5 is the section drawing of the longeron of subframe shown in Figure 2 along the B-B line,
Fig. 6 is the section drawing of the longeron of subframe shown in Figure 2 along the C-C line,
Fig. 7 is the section drawing of the longeron of subframe shown in Figure 2 along the D-D line,
Fig. 8 is the section drawing of the longeron of subframe shown in Figure 2 along the E-E line,
Fig. 9 is the section drawing of the longeron of subframe shown in Figure 2 along F F line;
Reference numeral:
1, lining sleeve pipe, 2, reinforced support, 3, front cross rail, 4, reinforced support, 5, longeron, 6, the swing arm support, 7, the swing arm support, 8, stabilizer bar arm, 9, the back mounting bracket, 10, after cross member last slice, 11, swing arm support, 12, reinforced support, 13, sheet under the after cross member, 14, reinforced support, 15, the swing arm support, 16, stabilizer bar arm, 17, swing arm support, 18, the swing arm support, 19, longeron.
The specific embodiment
In order more to be expressly understood technology contents of the present invention, describe in detail especially exemplified by following examples.
See also Fig. 1～shown in Figure 9, sub-frame connecting structure of the present invention is by two longerons (5,19), a front cross rail (3), after cross member is sheet (10 up and down, 13), six swing arm supports (6,7,11,15,17,18), four brace panels (2,4,12,14), four lining sleeve pipes (1), two stabilizer bar arms (8,16) and a back suspension device of engine support (9) be welded, this subframe general frame structure has the intensity height, characteristics such as good rigidly, subframe longeron (5,19), front cross rail (3) is an internal high pressure forming, and Fig. 4 to Fig. 9 has shown each shape of cross section feature of longeron.
The subframe longeron, front cross rail adopts pipe fitting internal high pressure forming technology, be applicable to the structure pipe fitting of the difform hollow of equal thickness, method is earlier tubing to be carried out first road bending operation, carrying out operation 2 then claps flat, carry out the 3rd procedure hydraulic forming again, be about to be placed in the shaping dies through the tubing that operation 2 is handled, be pressed into high-pressure fluid by pipe fitting inside, and at the axial direction of the tubing compensating pipe material of exerting pressure, the pipe material is pressed into the cavity body of mould internal shaping, follow and promptly cut edge by operation 4, the processing of auxiliary hole, method are to longeron, front cross rail carries out the end, the laser beam cutting of knock hole, last procedure is to clean, surface treatment etc.
The design of longeron (5,19) mainly is to consider and the gap requirement of driving engine, transmission shaft etc. that the axial trend of longeron is mild (z direction drop is little) relatively, is convenient to the inner high voltage process forming, has reduced half-blank quantity.The constant thickness of longeron (5,19) helps internal high pressure forming technology equally, the subsides mould that helps material, and the axially supply of material can be adjusted the collocation relation of pressing in the longeron with longitudinal travel easily, reduce forming defects, improved development-success ratio, thereby shortened time-to-market.
By Fig. 4 to Fig. 9 is the shape of cross section of longeron, the cross sectional shape of longeron is an oblong as can be seen, carry out the limit chamfering, some cross section is irregularly shaped (Fig. 6, Fig. 7), because design gaps needs, mentioned above principle is all satisfied in the design in each cross section, and (supposition longeron blank section girth is L, after design, the longeron section girth is L1, so the value of (L1-L)/L*100% gained should be less than or equal to 35% for good).
Subframe after cross member sheet up and down is welded into one whole earlier, is welded into framed structure by frock clamp location and longeron (5,19), front cross rail (3); And then four swing arm supports (6,7,11,15,17,18) of having good positioning with frock clamp, the welding of back suspension device of engine support; And then weld with four brace panels (2,4,12,14), two stabilizer bar arms (8,16) that frock clamp is had good positioning; Four lining sleeve pipes (1) last and that frock clamp is had good positioning weld, to guarantee the size shape positional tolerance requirement between each lining sleeve pipe.
To sum up, the subframe internal high pressure forming longeron that the present invention uses, front cross rail structure design uniqueness, simple in structure, technological feasibility good, assembling is easy, make that complete vehicle weight alleviates, material saving, product modular, raising subframe bulk strength, enhance product performance and precision, and can reduce half-finished parts quantity in process of production, reduce back processed such as welding, machine up and product assembly process, effectively reduce production costs, alleviate advantages such as complete vehicle weight, shortening process-cycle.
In this specification sheets, the present invention is described with reference to its certain embodiments.But, still can make various modifications and conversion obviously and not deviate from the spirit and scope of the invention.Therefore, specification sheets and accompanying drawing are regarded in an illustrative, rather than a restrictive.
Claims (10)
1. internal high pressure forming subframe, agent structure is " well " font, by two longerons (5,19), a front cross rail (3), an after cross member are welded, it is characterized in that, described longeron (5,19) is the cylinder structure of internal high pressure forming, the big non-regular shape in little two in the middle of its cutting plane is.
2. internal high pressure forming subframe according to claim 1 is characterized in that, the cross-sectional plane of described longeron (5,19) part at least is circle, ellipse, triangle or oblong.
3. internal high pressure forming subframe according to claim 1 is characterized in that, described longeron (5,19) has constant wall thickness.
4. internal high pressure forming subframe according to claim 1 is characterized in that, described longeron (5,19) respectively is welded with 3 swing arm supports.
5. internal high pressure forming subframe according to claim 1 is characterized in that, the two ends separately of described longeron (5,19) respectively are welded with 1 lining sleeve pipe.
6. internal high pressure forming subframe according to claim 1 is characterized in that, described longeron (5,19) respectively is welded with 1 stabilizer bar arm with the after cross member weld.
7. internal high pressure forming subframe according to claim 1 is characterized in that, is welded with back suspension device of engine support (9) on the described after cross member.
8. internal high pressure forming subframe according to claim 1 is characterized in that, the welding part of described two longerons (5,19), a front cross rail (3), an after cross member is provided with brace panel.
9. internal high pressure forming subframe according to claim 1 is characterized in that, described front cross rail (3) is the cylinder structure of internal high pressure forming, and its cutting plane is constant regular shape.
10. claim 1 or 9 described internal high pressure forming subframes, the method for described internal high pressure forming is: (1) pipeline bending, (2) workpiece is clapped flat, (3) hydraulic forming, cut edge (4), auxiliary hole is handled, and processing is cleaned, shown in (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010148615 CN101811517B (en) | 2010-04-16 | 2010-04-16 | Internal high-pressure formed auxiliary frame and forming method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010148615 CN101811517B (en) | 2010-04-16 | 2010-04-16 | Internal high-pressure formed auxiliary frame and forming method thereof |
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| CN101811517A true CN101811517A (en) | 2010-08-25 |
| CN101811517B CN101811517B (en) | 2013-03-27 |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102069302A (en) * | 2010-12-09 | 2011-05-25 | 金华福多纳机械有限公司 | Post-processing method for auto trailing-arm component with variable cross-section |
| CN102267490A (en) * | 2011-05-04 | 2011-12-07 | 北京航空航天大学 | Internal-high-pressure-forming-based automobile longitudinal beam and manufacturing method thereof |
| CN103287496A (en) * | 2013-06-27 | 2013-09-11 | 长城汽车股份有限公司 | Auxiliary frame used for vehicles and vehicle with same |
| CN103511825A (en) * | 2012-06-15 | 2014-01-15 | 上海汇众汽车制造有限公司 | Lining casing pipe for car frame and forming method thereof |
| CN103586332A (en) * | 2012-08-14 | 2014-02-19 | 上海金涌模具有限公司 | Process for stamping and forming sedan car rear auxiliary frame body |
| CN103847793A (en) * | 2012-11-30 | 2014-06-11 | 广州汽车集团股份有限公司 | Vehicular rear auxiliary frame and corresponding vehicle |
| CN104354767A (en) * | 2014-11-05 | 2015-02-18 | 柳州金茂机械有限公司 | Auxiliary frame |
| CN105312372A (en) * | 2014-08-05 | 2016-02-10 | 上海宝钢高新技术零部件有限公司 | Car auxiliary frame and forming method |
| CN106218721A (en) * | 2016-07-27 | 2016-12-14 | 芜湖禾田汽车工业有限公司 | Full aluminum subframe production method |
| CN110949513A (en) * | 2018-09-27 | 2020-04-03 | 本田技研工业株式会社 | Vehicle body front structure |
| US20220324007A1 (en) * | 2020-03-10 | 2022-10-13 | Sumitomo Heavy Industries, Ltd. | Forming system and forming method |
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| JP2008195206A (en) * | 2007-02-13 | 2008-08-28 | Honda Motor Co Ltd | Vehicle body front part structure of vehicle |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102069302A (en) * | 2010-12-09 | 2011-05-25 | 金华福多纳机械有限公司 | Post-processing method for auto trailing-arm component with variable cross-section |
| CN102267490A (en) * | 2011-05-04 | 2011-12-07 | 北京航空航天大学 | Internal-high-pressure-forming-based automobile longitudinal beam and manufacturing method thereof |
| CN103511825B (en) * | 2012-06-15 | 2016-03-16 | 上海汇众汽车制造有限公司 | Vehicle frame bushing sleeves and forming method thereof |
| CN103511825A (en) * | 2012-06-15 | 2014-01-15 | 上海汇众汽车制造有限公司 | Lining casing pipe for car frame and forming method thereof |
| CN103586332A (en) * | 2012-08-14 | 2014-02-19 | 上海金涌模具有限公司 | Process for stamping and forming sedan car rear auxiliary frame body |
| CN103586332B (en) * | 2012-08-14 | 2015-09-02 | 上海金涌模具有限公司 | The process for stamping and forming of car Rear secondary frame for vehicle main body |
| CN103847793A (en) * | 2012-11-30 | 2014-06-11 | 广州汽车集团股份有限公司 | Vehicular rear auxiliary frame and corresponding vehicle |
| CN103847793B (en) * | 2012-11-30 | 2016-06-08 | 广州汽车集团股份有限公司 | A kind of automobile rear sub-frame and corresponding automobile |
| CN103287496A (en) * | 2013-06-27 | 2013-09-11 | 长城汽车股份有限公司 | Auxiliary frame used for vehicles and vehicle with same |
| CN103287496B (en) * | 2013-06-27 | 2016-05-11 | 长城汽车股份有限公司 | For the subframe of vehicle and there is its vehicle |
| CN105312372A (en) * | 2014-08-05 | 2016-02-10 | 上海宝钢高新技术零部件有限公司 | Car auxiliary frame and forming method |
| CN104354767A (en) * | 2014-11-05 | 2015-02-18 | 柳州金茂机械有限公司 | Auxiliary frame |
| CN106218721A (en) * | 2016-07-27 | 2016-12-14 | 芜湖禾田汽车工业有限公司 | Full aluminum subframe production method |
| CN110949513A (en) * | 2018-09-27 | 2020-04-03 | 本田技研工业株式会社 | Vehicle body front structure |
| US20220324007A1 (en) * | 2020-03-10 | 2022-10-13 | Sumitomo Heavy Industries, Ltd. | Forming system and forming method |
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| CN101811517B (en) | 2013-03-27 |
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