CN103121066B - Forming method for frame crossbeam - Google Patents

Forming method for frame crossbeam Download PDF

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Publication number
CN103121066B
CN103121066B CN201110369974.3A CN201110369974A CN103121066B CN 103121066 B CN103121066 B CN 103121066B CN 201110369974 A CN201110369974 A CN 201110369974A CN 103121066 B CN103121066 B CN 103121066B
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crossbeam
plate
long limit
sides
flange
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CN201110369974.3A
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CN103121066A (en
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林春雷
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Beiqi Foton Motor Co Ltd
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Beiqi Foton Motor Co Ltd
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Abstract

The invention provides a forming method for a frame crossbeam. The forming method for the frame crossbeam comprises a flanging process and a bending process, wherein the flanging process comprises the step of flanging a part of long edges of two sides of crossbeam sheet materials, and the bending process comprises the step of forming the flanged crossbeam sheet materials so as to obtain the frame crossbeam with the cross section approximately being in a U shape. According to the technical scheme, before the bending process, the flanging process is adopted to the crossbeam sheet materials, the part of the long edges of the two sides of the crossbeam sheet materials is flanged, so that deformation generated by the actions of shear force and a shear sequence during a shear process of the crossbeam materials is compensated, and the flatness of the crossbeam sheet materials is reduced. Therefore, a difference of the width of an opening of the crossbeam along the longitudinal direction of the crossbeam can be effectively avoided, and the quality of the crossbeam and the quality of a frame are improved.

Description

The manufacturing process of frame cross
Technical field
The present invention relates to frame cross, particularly, relate to a kind of manufacturing process of frame cross.
Background technology
A kind of typical automobile frame generally includes two longerons in left and right and some crossbeams, and these crossbeams, by rivet or the mode such as welding is connected between two longerons, overallly form a kind of braced frame.
The bathtub construction that the cross section that frame cross (in this article also can referred to as crossbeam) is generally formed as having web and wing plates on two sides roughly takes the shape of the letter U, can be formed by Sheet Metal Forming Technology usually.Specifically, the manufacturing process of frame cross can comprise: blanking process, for the hot rolled steel plate coming from steel mill is become polylith crossbeam plate (woollen) by blankings such as plate shearing machines; Punching process, in crossbeam plate upper punch hole to form the installing hole of all size; And bending process, crossbeam plate is bent to the frame cross that the cross section with web and wing plates on two sides roughly takes the shape of the letter U.
In blanking process, be subject to the impact of shearing force and shearing sequence, the flatness that the crossbeam plate obtained after shearing generally will have up to 5-10mm.Therefore, in the frame cross formed subsequently through bending process, the width (distance namely between wing plates on two sides upper end) of crossbeam opening differs greatly on crossbeam longitudinal direction, thus brings difficulty to the connection between follow-up crossbeam and longeron, affects the total quality of vehicle frame.
Summary of the invention
The object of this invention is to provide a kind of manufacturing process of frame cross, the method can ensure the uniformity of crossbeam A/F on crossbeam longitudinal direction, thus is convenient to the connection between crossbeam and longeron, improves the total quality of vehicle frame.
To achieve these goals, the invention provides a kind of manufacturing process of frame cross, comprising: flanging process, flange is carried out to the part on long limit, the both sides of crossbeam plate; Bending process, forms to obtain the frame cross that cross section is roughly U-shaped to the crossbeam plate through flange.
In technique scheme, before bending process, first flanging process is taked to crossbeam plate, flange is carried out to the part on long limit, the both sides of crossbeam plate, cutting out in technique owing to being subject to the effect of shearing force and shearing sequence and the distortion occurred to compensate crossbeam plate, reduce the flatness of crossbeam plate, thus effectively can avoid the otherness of crossbeam A/F on crossbeam longitudinal direction, improve the quality of crossbeam and vehicle frame.
Other features and advantages of the present invention are described in detail in detailed description of the invention part subsequently.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for description, is used from explanation the present invention, but is not construed as limiting the invention with detailed description of the invention one below.In the accompanying drawings:
Fig. 1 is a kind of schematic diagram of existing frame cross.
Fig. 2 is the schematic diagram of a kind of typical frame cross that method according to the present invention is formed.
Fig. 3 is the cross sectional representation of flange part in display Fig. 2.
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.Should be understood that, detailed description of the invention described herein, only for instruction and explanation of the present invention, is not limited to the present invention.
What Fig. 1 represented is existing frame cross.What Fig. 2 represented is the typical frame cross of one that method according to the present invention is formed.Fig. 3 is the cross sectional representation of flange part in display Fig. 2.In the accompanying drawings, Reference numeral 1 represents the web of crossbeam, and 2 represent wing plates on two sides, and 3 represent the installing hole on crossbeam, and 4 represent flange part.
By reference to the accompanying drawings, by more easily the present invention will be understood to the detailed description that method of the present invention is carried out below.
The invention provides a kind of manufacturing process of frame cross, comprising: flanging process, flange is carried out to the part on long limit, the both sides of crossbeam plate; Bending process, forms to obtain the frame cross that cross section is roughly U-shaped to the crossbeam plate through flange.
In the present invention, before crossbeam plate forms frame cross by bending process, first flanging process is taked to crossbeam plate, flange is carried out to the part on long limit, the both sides of crossbeam plate.By this flanging process, the flatness of crossbeam plate can be reduced, such as, its flatness can be controlled at 1-3mm.Specifically, when obtaining crossbeam plate by blanking process by plate shearing machine etc. from hot rolled steel plate, owing to being subject to the impact of shearing force and shearing sequence, the crossbeam plate obtained inevitably deforms, namely flatness strengthens, and such as flatness can up to 5-10mm.After obtaining crossbeam plate, flange is carried out by the part on long limit, the both sides of flanging process to crossbeam plate, the distortion that crossbeam plate occurs in blanking process can be offset, level before its flatness is reduced to blanking, even lower than the level before blanking, such as, 1-3mm can be reached.Therefore, after the process through flanging process, then form frame cross by bending process, the uniformity of crossbeam A/F on crossbeam longitudinal direction can be ensured, be convenient to the connection between subsequent handling middle cross beam and longeron, thus the total quality of vehicle frame can be improved.
As a kind of concrete embodiment, be subject to the effect of shearing force on long limit, blanking process middle cross beam plate both sides and to produce the direction of distortion contrary with the direction of this long limit, crossbeam plate both sides flange in flanging process.Thus, the distortion of blanking process middle cross beam plate effectively can be offset by flanging process.
Preferably, the flange part long limit, the both sides of crossbeam plate formed by flanging process is mutually symmetrical.Flange part is symmetrically formed, and easily ensures the flatness of crossbeam plate.
Crossbeam and longeron are by rivet or the mode such as welding is connected to form vehicle frame.Therefore, flange part is preferably placed at the middle part on the long limit of crossbeam plate, in order to avoid bring inconvenience when being connected with longeron.
The length of flange part can design as the case may be, such as, according to the size, flatness etc. of crossbeam plate.If the length of flange part is too little, then can not correct the flatness of plate well.Otherwise, if the length of flange part is too large, then may affect the normal use of crossbeam.In the present invention, as one preferred embodiment, the ratio of the length on the length of flange part and the long limit of crossbeam plate is 1/3 ~ 2/3.In addition, preferably, the flange fillet of described flange part is 1 ~ 2 times of the thickness of described crossbeam plate.The numerical value of flange fillet is unsuitable excessive, when avoiding assembling and other parts interfere.
In addition, as a kind of important aspect of the present invention, flanging process can complete in same operation with punching technology, namely on same station, carries out flange processing and punching processing simultaneously or successively.In view of this, this operation also can be described as " flange punching operation ".As everyone knows, frame cross generally has the installing hole of multiple different size, these installing holes are completed by punching technology.Specifically, after obtaining crossbeam plate from hot rolled steel plate, by moulds such as stamping machines in crossbeam plate upper punch hole, to form these installing holes.In the present invention, flanging process and punching technology can be incorporated in an operation, the mould needed for punching is utilized to carry out flange, thus without the need to specialized designs flanging die, saving the input of equipment, in addition also without the need to arranging overturning process specially again, thus saving man-hour, improve production efficiency, reduce production cost.
More than describe the preferred embodiment of the present invention in detail; but the present invention is not limited to the detail in above-mentioned embodiment, within the scope of technical conceive of the present invention; can carry out multiple simple variant to technical scheme of the present invention, these simple variant all belong to protection scope of the present invention.
It should be noted that in addition, each the concrete technical characteristic described in above-mentioned detailed description of the invention, in reconcilable situation, can be combined by any suitable mode.In order to avoid unnecessary repetition, the present invention illustrates no longer separately to various possible combination.In addition, also can be combined between various different embodiment of the present invention, as long as it is without prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.

Claims (5)

1. a manufacturing process for frame cross, comprising:
Flanging process, carries out flange to the part on long limit, the both sides of crossbeam plate;
Bending process, carries out bending to obtain the frame cross that cross section is roughly U-shaped to the crossbeam plate through flange;
Described method comprises blanking process, obtains polylith crossbeam plate by shear heat rolled steel plate;
Wherein, the effect of shearing force is subject on long limit, blanking process middle cross beam plate both sides and to produce the direction of distortion contrary with the direction of this long limit, crossbeam plate both sides flange in flanging process.
2. method according to claim 1, wherein, the flange part that the long limit, both sides of crossbeam plate is formed by flanging process is mutually symmetrical.
3. method according to claim 2, wherein, described flange part is positioned at the middle part on the long limit of crossbeam plate.
4. method according to claim 3, wherein, the ratio of the length on the length of described flange part and the long limit of crossbeam plate is 1/3 ~ 2/3.
5. method according to claim 1, wherein, the method comprises punching technology crossbeam plate being carried out to punching, and this punching technology and described flanging process complete in same operation.
CN201110369974.3A 2011-11-18 2011-11-18 Forming method for frame crossbeam Active CN103121066B (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
CN201110369974.3A CN103121066B (en) 2011-11-18 2011-11-18 Forming method for frame crossbeam

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CN103121066B true CN103121066B (en) 2015-02-18

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106903239B (en) * 2017-03-20 2019-04-05 德州豪沃机械制造有限公司 A kind of lightweight frame cross processing technology
CN111283073A (en) * 2018-12-10 2020-06-16 深圳市方胜瑞中科技有限公司 Manufacturing process of fixed panel and fixed panel

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2348244A1 (en) * 2001-05-22 2002-11-22 National Steel Car Limited Well car with cross member
CN201071063Y (en) * 2007-06-29 2008-06-11 上海华普汽车有限公司 Front beam of vehicle engine and vehicle
CN101691003A (en) * 2009-10-20 2010-04-07 中国重汽集团济南动力有限公司 Machining process of bent cross beams of heavy truck frames
DE102008053289A1 (en) * 2008-10-27 2010-04-29 GM Global Technology Operations, Inc., Detroit Method for producing u-shaped support frame for backrest of motor vehicle seat, involves enlarging cross sections of middle and outer longitudinal sections in vertical and longitudinal directions of support frame, respectively
CN201969777U (en) * 2010-11-26 2011-09-14 北汽福田汽车股份有限公司 Stamping production device used for processing U-shaped or Phi-shaped cross beam
CN102211123A (en) * 2011-01-25 2011-10-12 江西艾芬达卫浴有限公司 Full-automatic punching flanging device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2348244A1 (en) * 2001-05-22 2002-11-22 National Steel Car Limited Well car with cross member
CN201071063Y (en) * 2007-06-29 2008-06-11 上海华普汽车有限公司 Front beam of vehicle engine and vehicle
DE102008053289A1 (en) * 2008-10-27 2010-04-29 GM Global Technology Operations, Inc., Detroit Method for producing u-shaped support frame for backrest of motor vehicle seat, involves enlarging cross sections of middle and outer longitudinal sections in vertical and longitudinal directions of support frame, respectively
CN101691003A (en) * 2009-10-20 2010-04-07 中国重汽集团济南动力有限公司 Machining process of bent cross beams of heavy truck frames
CN201969777U (en) * 2010-11-26 2011-09-14 北汽福田汽车股份有限公司 Stamping production device used for processing U-shaped or Phi-shaped cross beam
CN102211123A (en) * 2011-01-25 2011-10-12 江西艾芬达卫浴有限公司 Full-automatic punching flanging device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
《大型结构件的平面加工》;李德英等;《纺织机械》;20080114(第5期);第44页第2栏倒数第1段和附图6 *

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