CN107570586B - A kind of process and mould structure solving the high flange cracking such as arc - Google Patents

A kind of process and mould structure solving the high flange cracking such as arc Download PDF

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Publication number
CN107570586B
CN107570586B CN201710802195.5A CN201710802195A CN107570586B CN 107570586 B CN107570586 B CN 107570586B CN 201710802195 A CN201710802195 A CN 201710802195A CN 107570586 B CN107570586 B CN 107570586B
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China
Prior art keywords
flange
storing
arc
compensatory zone
cavity plate
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CN107570586A (en
Inventor
何鹏申
王肖英
李畅华
井芊
高双明
徐肖
李杭
卢桥
李昂
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Anhui Jianghuai Automobile Group Corp
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Anhui Jianghuai Automobile Group Corp
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Abstract

A kind of process solving the high flange cracking such as arc and mould structure, method include drawing operation: at the high flange such as the arc of drawing operation part, drawing simultaneously forms storing compensatory zone;Trimming process step: trimming process step part deburring is formed along trimming line;Overturning process: overturning process part flange is formed along flange die parting line, it is corresponded in mould structure, there is storing compensatory zone at the high flange such as the arc of overturning process part, the fluted position of flange negative mold is corresponding, the groove changes the trend and engagement sequence of the flange part in the overturning process part, by providing storing compensatory zone, the trend and engagement sequence of the flange part in overturning process are changed, the defective workmanships such as cracking are avoided.

Description

A kind of process and mould structure solving the high flange cracking such as arc
Technical field
Process and mould structure of the present invention about a kind of high flange cracking such as solution arc.
Background technique
In Sheet Metal Forming Technology, stamping parts of automobile is with material is thin, complex-shaped and mostly solid surface, surface quality are wanted Ask the features such as high.Its stamping parts bonding relation of partial automobile is complex, product edge be frequently necessary to process radius of curvature compared with Small, the biggish arc wheel profile of length.
For later floor, close to side wall and front and back wheel arch area during punching production i.e. by upper lower flange at Shape realizes that, since rear floor length is suitable with side wall door opening zone length, the flange radian close to one end of rear wheel cover is big, because Intensity and overlap joint require contour flange, which also has some impact on (flange cracking and pleat to stamping parts flanging forming quality Wrinkle), can only increase flange radian or reduce flange height reduces flange defect.In addition, when flange part is long, flange part It is easy to appear intermediate region product face and collapses problem.
Summary of the invention
The purpose of the present invention is the processes and mould structure of a kind of high flange cracking such as solution arc, for solving arc The quality problems that the smaller contour flange cracking of shape, arc area product face collapse.
To realize the above-mentioned technical purpose, the present invention provides a kind of process for solving the high flange cracking such as arc, packet Include: drawing operation: at the high flange such as the arc of drawing operation part, drawing simultaneously forms storing compensatory zone;Trimming process step: it repairs on edge Sideline forms trimming process step part deburring;Overturning process: overturning process part flange is formed along flange die parting line.
As a further improvement, the storing compensatory zone is located at the outside of the flange die parting line, and the deburring Line runs through the storing compensatory zone.
As a further improvement, the storing compensating basin is male or female.
As a further improvement, the overturning process part is arranged on the flange cavity plate of lower die holder, the flange cavity plate With cavity plate ontology and groove;The cavity plate ontology is corresponding with two side positions of the storing compensatory zone, the groove with Storing compensatory zone position is corresponding, and the groove changes the trend and contact of the flange part in the overturning process part Sequentially.
As a further improvement, in the overturning process, the two sides of the storing compensatory zone are first turned over, the storing It is turned over after compensatory zone.
As a further improvement, the top of the overturning process part has material pressing core, the lower part of the overturning process part With retainer core.
Corresponding with process of the invention, the present invention also provides a kind of mold knots of the high flange cracking such as solution arc Structure comprising: lower die holder and its flange cavity plate, and the overturning process part on the flange cavity plate, in which: the flange work There is storing compensatory zone, the flange cavity plate has cavity plate ontology and groove at the high flange such as the arc of sequence part;The cavity plate Ontology is corresponding with two side positions of the storing compensatory zone, and the groove is corresponding with storing compensatory zone position, The groove changes the trend and engagement sequence of the flange part in the overturning process part.
As a further improvement, the two sides of the storing compensatory zone are first turned over, and are turned over after the storing compensatory zone.
As a further improvement, the storing compensatory zone is located at the outside of the flange die parting line, and the storing Compensating basin is male or female.
As a further improvement, the top of the overturning process part has material pressing core, the lower part of the overturning process part With retainer core.
By providing storing compensatory zone in process and mould structure in the present invention, change in overturning process The trend and engagement sequence of flange part avoid the defective workmanships such as cracking.
Detailed description of the invention
Fig. 1 is drawing operation part schematic diagram;
Fig. 2 is concave trimming process step part schematic diagram;
Fig. 3 is convex trimming process step part schematic diagram;
Fig. 4 is flanging die schematic diagram;
Fig. 5 is cavity plate and overturning process part partial schematic diagram;With
Fig. 6 is the schematic diagram of rear floor pieces.
Appended drawing reference: lower die holder 1, groove 2, material pressing core 11, flange cavity plate 12, retainer core 13, storing compensatory zone 15, after Floor 20, drawing operation part 21, trimming process step part 22, overturning process part 23, trimming line 31, flange die parting line 32.
Specific embodiment
As shown in Figures 1 to 6, the technique in the present invention and mould structure are applied and solve arc grade height flange cracking, wherein Workpiece as shown in FIG. 6 is rear floor 20, and at the high flange such as arc, the present invention says on later floor 20 as embodiment It is bright and be applied to all workpiece required with the high flange such as arc.
The present invention provides a kind of process for solving the high flange cracking such as arc comprising: drawing operation: in drawing work At the high flange such as the arc of sequence part 21, drawing simultaneously forms storing compensatory zone 15;Trimming process step: along trimming line 31 by trimming process step 22 deburring of part molding;Overturning process: 23 flange of overturning process part is formed along flange die parting line 32.
Drawing operation part 21 in the present invention, trimming process step part 22, overturning process part 23 are same material in different works The shape and title in sequence stage.
As a further improvement, the storing compensatory zone 15 is located at the outside of the flange die parting line 32, and described Trimming line 31 runs through the storing compensatory zone 15.
As a further improvement, as shown in Figures 2 and 3, the storing compensating basin 15 is male or female.It is wherein preferred Using female feature, it is more advantageous to solution technical problem.
As a further improvement, the overturning process part 23 is arranged on the flange cavity plate 12 of lower die holder 1, the flange Cavity plate 12 has cavity plate ontology and groove 2;The cavity plate ontology is corresponding with two side positions of the storing compensatory zone 15, institute State that groove 2 is corresponding with 5 position of storing compensatory zone, the groove changes the flange part in the overturning process part Trend and engagement sequence.
As a further improvement, in the overturning process, the two sides of the storing compensatory zone 15 are first turned over, the storage It is turned over after material compensatory zone 15.
As a further improvement, the top of the overturning process part 23 has material pressing core 11, the overturning process part 23 Lower part have retainer core 13.
Corresponding with process of the invention, the present invention also provides a kind of mold knots of the high flange cracking such as solution arc Structure comprising: lower die holder 1 and its flange cavity plate 12, and the overturning process part 23 on the flange cavity plate 12, in which: institute State at the high flange such as arc of overturning process part 23 have storing compensatory zone 15, the flange cavity plate 12 have cavity plate ontology and Groove 2;The cavity plate ontology is corresponding with two side positions of the storing compensatory zone 15, and the groove 2 is mended with the storing Repay that 15 position of region is corresponding, the groove 2 changes the trend and engagement sequence of the flange part in the overturning process part.
As a further improvement, the two sides of the storing compensatory zone 15 are first turned over, and are turned over after the storing compensatory zone.
As a further improvement, the storing compensatory zone 15 is located at the outside of the flange die parting line 32, and described Storing compensating basin 15 is male or female.
As a further improvement, the top of the overturning process part 23 has material pressing core 11, the overturning process part 23 Lower part have retainer core 13.
By providing storing compensatory zone in process and mould structure in the present invention, change in overturning process The trend and engagement sequence of flange part avoid the defective workmanships such as cracking.
A kind of stamping parts arc flange processing method and its mould structure are provided in technical solution of the present invention, for solving arc The quality problems that the smaller contour flange cracking of shape, arc area product face collapse.
Realize that there is arc by flange when floor 20 is close to the contour punching press of one end of rear wheel cover after as shown in FIG. 6 At the high flange such as shape.Flange processing method in the technical program are as follows: design storing compensation when drawing at the high flange such as arc Area 15 can play the role of storing and pre- flange using convex or recessed feature, convexity feature, and recessed feature plays storing and delay Arc area flange time of contact, it is preferred to use recessed feature.Deburring is needed to carry out deburring by flange exhibition material.Flange cavity plate when flange 12 2 liang of groove lateral flange domain type face contacts carry out flange, then gradually to intermediate region, the i.e. gradually transition of storing compensating basin 15 Flange.
In the present invention, drawing operation: the stretched storing compensating basin 15 (male or female), trimming process step: along deburring Line 31 forms 22 deburring of trimming process step part, is wherein half convex/half concave, overturning process: edge after 15 deburring of storing compensating basin Flange die parting line 32 by 23 flange of overturning process part at.
The present invention solves the high flange cracking such as arc and collapses, and mainly passes through storing+flange engagement sequence+flange amount (rollover) Etc. processes realize that mating band groove 2 turns over arc two sides first, turn over after arc area, to reduce flange cracking or collapse.
It should be appreciated that invention which is intended to be protected is not limited to non-limiting embodiments, it should be understood that non-limiting embodiment party Case is illustrated as just example.The protection scope of the desired essence of the application is more embodied in independent claims offer Range and its dependent claims.

Claims (7)

1. a kind of process for solving the high flange cracking such as arc comprising:
Drawing operation: at the high flange such as the arc of drawing operation part, drawing simultaneously forms storing compensatory zone;
Trimming process step: trimming process step part deburring is formed along trimming line;
Overturning process: overturning process part flange is formed along flange die parting line;
The storing compensatory zone is located at the outside of the flange die parting line, and the trimming line runs through the storing compensating basin Domain;
The storing compensatory zone is male or female;
The overturning process part is arranged on the flange cavity plate of lower die holder, and the flange cavity plate has cavity plate ontology and groove;
The cavity plate ontology is corresponding with two side positions of the storing compensatory zone, the groove and the storing compensatory zone Position is corresponding, and the groove changes the trend and engagement sequence of the flange part in the overturning process part.
2. a kind of process for solving the high flange cracking such as arc as described in claim 1, it is characterised in that: turned over described In the process of side, the two sides of the storing compensatory zone are first turned over, and are turned over after the storing compensatory zone.
3. a kind of process for solving the high flange cracking such as arc as claimed in claim 2, it is characterised in that: the flange The top of process part processing has material pressing core, and the lower part of the overturning process part has retainer core.
4. a kind of mould structure for solving the high flange cracking such as arc comprising: lower die holder and its flange cavity plate, and be located at described Overturning process part on flange cavity plate, it is characterised in that:
At the high flange such as the arc of the overturning process part have storing compensatory zone, the flange cavity plate have cavity plate ontology and Groove;
The cavity plate ontology is corresponding with two side positions of the storing compensatory zone, the groove and the storing compensatory zone Position is corresponding, and the groove changes the trend and engagement sequence of the flange part in the overturning process part.
5. a kind of mould structure for solving the high flange cracking such as arc as claimed in claim 4, it is characterised in that: the storing The two sides of compensatory zone are first turned over, and are turned over after the storing compensatory zone.
6. a kind of mould structure for solving the high flange cracking such as arc as claimed in claim 5, it is characterised in that: the storing Compensatory zone is located at the outside of the flange die parting line, and the storing compensatory zone is male or female.
7. a kind of mould structure for solving the high flange cracking such as arc as claimed in claim 6, it is characterised in that: the flange The top of process part processing has material pressing core, and the lower part of the overturning process part has retainer core.
CN201710802195.5A 2017-09-07 2017-09-07 A kind of process and mould structure solving the high flange cracking such as arc Active CN107570586B (en)

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Application Number Priority Date Filing Date Title
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CN107570586B true CN107570586B (en) 2019-04-16

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Publication number Priority date Publication date Assignee Title
CN108906998A (en) * 2018-08-27 2018-11-30 奇瑞汽车股份有限公司 A kind of skylight top cover flanging mold flange collapses compensation device
CN110193559A (en) * 2019-06-13 2019-09-03 奇瑞汽车股份有限公司 Improve the mold of curved surface flange forming defect
CN113909380B (en) * 2021-12-13 2022-03-08 浙江长华汽车零部件股份有限公司 Efficient stamping part multi-direction flanging thinning device

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CN101209475A (en) * 2006-12-29 2008-07-02 比亚迪股份有限公司 Method for forming part with hole
CN102910212A (en) * 2012-08-28 2013-02-06 上海宏昌汽配有限公司 Magnesium alloy cold pressing automobile fender and forming process thereof
CN103480747A (en) * 2013-10-10 2014-01-01 义乌赵龙重工有限公司 Fender double-drawing die
US10639695B2 (en) * 2014-01-28 2020-05-05 Jfe Steel Corporation Press forming method, method for manufacturing press-formed component and method for determining preform shape used in these methods
CN204035335U (en) * 2014-06-17 2014-12-24 奇瑞汽车股份有限公司 A kind of automobile side coaming stamping die
CN104438523B (en) * 2014-12-15 2016-03-30 安徽江淮汽车股份有限公司 Stamping parts method for flanging

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