CN102266892B - Turning point improving method for reshaping vehicle longitudinal beam type stamping part and device special for method - Google Patents

Turning point improving method for reshaping vehicle longitudinal beam type stamping part and device special for method Download PDF

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Publication number
CN102266892B
CN102266892B CN201110198544.XA CN201110198544A CN102266892B CN 102266892 B CN102266892 B CN 102266892B CN 201110198544 A CN201110198544 A CN 201110198544A CN 102266892 B CN102266892 B CN 102266892B
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angle
punch
repair welding
die
longitudinal beam
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CN102266892A (en
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鲜光斌
丁发
赵红伟
胡俊舟
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Chery Automobile Co Ltd
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Chery Automobile Co Ltd
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Abstract

The invention discloses a turning point improving method for reshaping a vehicle longitudinal beam type stamping part and a device special for the method, belonging to the stamping field. According to the embodiment of the invention, a second R angle is added in a convex mould in a turning and reshaping process and repairing welding treatment is carried out in corresponding positions of a concave mould, so that the turning point improving method is used under the condition that all procedures of a longitudinal beam can not be used for carrying out lateral shaping through adding tapered wedges. During the use, the concave mould moves downward, and the convex mould is fixed, a flanging insert of the concave mould enables a flanged side of a workpiece to be shrunk inward through an inward-shaping force of turning points at two sides of the U-shaped longitudinal beam, therefore, the whole flanged side is shrunk inwards for preventing from externally rebounding. Thus, no mould mechanism is added in the embodiment of the invention and a stamping process and the newly-added mould are not changed, thus the technical cost is reduced. The turning point improving method has the advantages of high improving speed and remarkable effect; and the quality of the whole vehicle is not influenced by the rebounding of the improved vertical beam.

Description

Flex point amelioration method and special purpose device thereof for vehicle longitudinal beam type stamping part shaping
Technical field
The present invention relates to a kind of stamping parts shaping amelioration method, particularly flex point amelioration method and special purpose device thereof for a kind of vehicle longitudinal beam type stamping part shaping.
Background technology
Along with the develop rapidly of auto industry, require more and more higher for the product quality of vehicle longitudinal beam type stamping part.Existing vehicle longitudinal beam type stamping part is U-shaped structure, employing high-strength steel sheet is stamped to form, because high-strength steel sheet self material is thick, drawing depth is dark, in addition automobile longitudinal girder class punching press shape matching complexity, final punching press product bounce-back is out serious, affects matching effect and the quality of welding spot of body structure, even finally affects complete vehicle quality.
Summary of the invention
Serious in order to overcome the product bounce-back existing in above-mentioned prior art, affect matching effect and the quality of welding spot of body structure, even finally affect the problem of complete vehicle quality, the embodiment of the present invention provides a kind of vehicle longitudinal beam type stamping part shaping flex point amelioration method and special purpose device thereof.Described technical scheme is as follows:
A kind of vehicle longitudinal beam type stamping part shaping flex point amelioration method, in U-shaped longeron flanging and restriking operation, by under the R angle of described U-shaped longeron bounce-back place corresponding in punch, and along the downward 5-10 millimeter of described R angle tangential direction, do a R dihedral again and become second R angle, receive described in described second R angle in U-shaped mouthful of U-shaped longeron, described second R angle makes by machining, and surface smoothing, does not cheat bag;
Die R angle place with corresponding section, described punch position, carry out repair welding along the downward 5-10 millimeter of described U-shaped longeron bounce-back direction, punch R angle is received in described second R angle, after this place's repair welding, carry out pincers worker processing, require surface smoothing, do not cheat bag.
Particularly, after having rectified and improved, between described punch and described die, there is no interference point, gap is even and sizes values is reasonable.
Particularly, in described punch, increase pressing direction after described flex point consistent with the pressing direction of described U-shaped longeron flanging and restriking operation.
Particularly, when described die adopts Cr12 or Cr12MoV material, described repair welding is insulation weldering.
Further, described repair welding thickness exceedes 5 millimeters, in described die every 15 millimeters play sunk screw after repair welding again.
Further, after described repair welding, described die is not heat-treated and case hardness processing.
The embodiment of the present invention also provides a kind of special purpose device being applied in described vehicle longitudinal beam type stamping part shaping flex point amelioration method, comprise punch and die, in described punch under the R angle of corresponding described U-shaped longeron bounce-back place, and along the downward 5-10 millimeter of described R angle tangential direction, second R angle is set, receives described in described second R angle in U-shaped mouthful of U-shaped longeron, described second R angle makes by machining, and surface smoothing, does not cheat bag;
With the die R angle place of corresponding section, described punch position, carry out repair welding along the downward 5-10 millimeter of described U-shaped longeron bounce-back direction, punch R angle is received in described second R angle, this place's repair welding place requires surface smoothing, does not cheat bag.
The beneficial effect that the technical scheme that the embodiment of the present invention provides is brought is: the embodiment of the present invention by increasing by second R angle in flanging and restriking operation in punch, and do repair welding processing in the relevant position of die, make cannot add and the in the situation that wedge carrying out side shaping, use said method at longeron all process steps, do not increase any mold mechanism, do not change Sheet Metal Forming Technology and newly increase mould, reduce technical costs, and it is fast to have rectification speed, the advantage of successful, the longeron after rectification can not rebound and affect complete vehicle quality.
Brief description of the drawings
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing of required use during embodiment is described is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the schematic diagram that punch described in the embodiment of the present invention and described die are assembled together;
Fig. 2 is the plane of punch described in the embodiment of the present invention;
Fig. 3 is the plane of die described in the embodiment of the present invention;
Fig. 4 is the comparison diagram before and after the rectification of product described in the embodiment of the present invention.
In figure: 1 die, 1.1 flange insert, 1.1 die flex points, 2 punch, 2.1 punch flex points, 3 punch rectification regions, 4 die rectification regions, 5 product theory states, the actual bounce-back state before 6 product rectifications, the virtual condition after 7 product rectifications,
A product the one R angle, B product the 2nd R angle (flex point), the inside debit of C is to, D negative angle, and E is to pressing direction.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing, embodiment of the present invention is described further in detail.
Shown in Figure 1, a kind of vehicle longitudinal beam type stamping part shaping flex point amelioration method described in the embodiment of the present invention, mainly be applicable to the vertical beam-like part of U-shaped structure, described vertical beam-like part has flanging and restriking but without the mould of side flanging shaping, and must be affect after amplify at R angle in the situation of entrucking and quality of welding spot to use flex point amelioration method of the present invention.Referring to Fig. 1, described flex point amelioration method is in U-shaped longeron flanging and restriking operation, by under the R angle of described U-shaped longeron bounce-back place corresponding in punch 2, be that punch rectification region 3(is referring to Fig. 2), and along the downward 5-10 millimeter of R angle tangential direction, then do a R dihedral and become second R angle (being punch flex point 2.1 places), described in described second R angle, in U-shaped mouthful of U-shaped longeron, receive, described second R angle makes by machining, and surface smoothing, do not cheat bag; Wherein, in reality rectification, the size at flex point R angle is generally 5 mm in sizes, as it is serious to rebound, and sheet thickness is thick, need to determine according to actual conditions the size at R angle, and flex point R angle is greater than 5 millimeters possibly;
Referring to Fig. 1, R angle place with the die 1 of described punch 2 corresponding sections, position, be that die rectification region 4(is referring to Fig. 3), carry out repair welding along the downward 5-10 millimeter of described U-shaped longeron bounce-back direction, the R angle of punch 2 is received in described second R angle, after this place's repair welding, carry out pincers worker processing, require surface smoothing, do not cheat bag.
Referring to Fig. 1, principle of the present invention is: when work, die 1 part moves downward, punch 2 parts are motionless, and under the effect of punch flex point 2.1 and die 1 flex point, the flange insert 1.1 of die 1 is by the effect of the strength of the inside shaping of flex point on U-shaped longeron both sides, the flange of product is inwardly received, thereby force whole flange inwardly to be received, containment flange outwards rebounds, and makes end article reach the state of actual needs in coupling.
Particularly, after having rectified and improved, between described punch 2 and described die 1, there is no interference point, gap is even and sizes values is reasonable, makes product not have wrinkling and weigh wounded.
Particularly, in described punch 2, increase pressing direction after described flex point consistent with the pressing direction of described U-shaped longeron flanging and restriking operation, ensured that product affects punching press effect.
Particularly, when described die 1 adopts Cr12 or Cr12MoV material, described repair welding is insulation weldering, has avoided the cracking of mould.
Further, described repair welding thickness exceedes 5 millimeters, requirement is taken measures on customs clearance and is guaranteed not come off in institute's welding portion production process, specifically in described die 1 every 15 millimeters play sunk screw after repair welding again, to guarantee that welding rear weldering in part producing process does not come off.
Further, after described repair welding, described die 1 is not heat-treated and case hardness processing, avoid causing repair welding part cracking to come off.
As shown in Figure 4, in figure, dotted line represents product theory state 5, double dot dash line represents the actual bounce-back state 6 before product rectification, heavy line represents the virtual condition 7 after product rectification, and wherein, A is product the one R angle, B is product the 2nd R angle (flex point), C to be interior debit to, D is negative angle, E is to being pressing direction.
The U-shaped actinal surface of rectification floor side member is likely because the effect of flex point B forms a negative angle D, the bounce-back of approximately two millimeters, flange face after rectification is likely pressed close to data theory state like this, thereby within rebound amount is controlled at a millimeter, can greatly improve the bounce-back of product.
As shown in Figure 1, the embodiment of the present invention also provides a kind of special purpose device being applied in described vehicle longitudinal beam type stamping part shaping flex point amelioration method, comprise punch 2 and die 1, in described punch 2 under the R angle of corresponding described U-shaped longeron bounce-back place and along the downward 5-10 millimeter of R angle tangential direction, second R angle is set, receives described in described second R angle in U-shaped mouthful of U-shaped longeron, described second R angle makes by machining, and surface smoothing, does not cheat bag;
With the die 1R angle place of described punch 2 corresponding sections, position, carry out repair welding along the downward 5-10 millimeter of described U-shaped longeron bounce-back direction, the R angle of punch 2 is received in described second R angle, this place's repair welding place requires surface smoothing, does not cheat bag.
The embodiment of the present invention by increasing by second R angle in flanging and restriking operation in punch 2, and do repair welding processing in the relevant position of die 1, make cannot add and the in the situation that wedge carrying out side shaping, use said method at longeron all process steps, do not increase any mold mechanism, do not change Sheet Metal Forming Technology and newly increase mould, reduced technical costs, and it being fast to have rectification speed, the advantage of successful, the longeron after rectification can not rebound and affect complete vehicle quality.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.

Claims (1)

1. a vehicle longitudinal beam type stamping part shaping flex point amelioration method, it is characterized in that, in U-shaped longeron flanging and restriking operation, by under the R angle of described U-shaped longeron bounce-back place corresponding in punch, and along the downward 5-10 millimeter of described R angle tangential direction, then do a R dihedral and become second R angle, described in described second R angle, in U-shaped mouthful of U-shaped longeron, receive, described second R angle makes by machining, and surface smoothing, do not cheat bag;
Die R angle place with corresponding section, described punch position, carry out repair welding along the downward 5-10 millimeter of described U-shaped longeron bounce-back direction, punch R angle is received in described second R angle, after this place's repair welding, carry out pincers worker processing, require surface smoothing, do not cheat bag;
Described repair welding thickness exceedes 5 millimeters, in described die every 15 millimeters play sunk screw after repair welding again;
After described repair welding, described die is not heat-treated and case hardness processing;
After having rectified and improved, between described punch and described die, there is no interference point, gap is even and sizes values is reasonable;
In described punch, increase pressing direction after described flex point consistent with the pressing direction of described U-shaped longeron flanging and restriking operation;
When described die adopts Cr12 or Cr12MoV material, described repair welding is insulation weldering.
CN201110198544.XA 2011-07-15 2011-07-15 Turning point improving method for reshaping vehicle longitudinal beam type stamping part and device special for method Active CN102266892B (en)

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Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103464577B (en) * 2012-06-06 2016-01-27 奇瑞汽车股份有限公司 The manufacture method of automobile " S " type longeron
CN102896247A (en) * 2012-09-17 2013-01-30 芜湖世达模具有限公司 Embedding type workpiece fixing device for blank stamping
CN102989854B (en) * 2012-11-27 2014-10-01 奇瑞汽车股份有限公司 Correcting method of misplacement of flanging angle and unevenness of flanging face of automotive L-shaped stamping part
CN103418656A (en) * 2013-08-16 2013-12-04 亿森(上海)模具有限公司 Method for stamping automobile beam piece
CN107824636B (en) * 2017-12-13 2019-12-03 高密市豪沃机械科技有限公司 Car U-shaped beam class sheet metal component shaping methods

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3404967B2 (en) * 1995-03-09 2003-05-12 トヨタ自動車株式会社 Drawing method
CN201534199U (en) * 2009-10-21 2010-07-28 四川省宜宾普什模具有限公司 Rotary type flanging die
CN101856693A (en) * 2010-05-25 2010-10-13 李义 Moving die compressive stress decomposing and forming method, volume spring and U-shaped bolt composite bending die

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
杜国华.如何进行Cr12合金模具钢模具的堆焊修复.《新编焊接工艺500问》.机械工业出版社,2009,367. *
栽丝焊焊接剪板机剪切压爪大梁;谢永江等;《煤矿机械》;20041031(第10期);第79页第1栏第3段 *
浅析前纵梁后部本体反弹的一般整改方法;鲜光斌等;《模具制造》;20110131(第1期);第23页1-3段,附图3-5 *
车身纵梁成形工艺与模具设计;张明扬;《模具技术》;20061030(第5期);第23页第3段,附图2、3 *

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