CN101357386B - Mold for parts flanged-edge formed in one piece and design method thereof - Google Patents

Mold for parts flanged-edge formed in one piece and design method thereof Download PDF

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Publication number
CN101357386B
CN101357386B CN200710143407XA CN200710143407A CN101357386B CN 101357386 B CN101357386 B CN 101357386B CN 200710143407X A CN200710143407X A CN 200710143407XA CN 200710143407 A CN200710143407 A CN 200710143407A CN 101357386 B CN101357386 B CN 101357386B
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expanding
flange
hollows
line
stretching
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CN200710143407XA
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CN101357386A (en
Inventor
张香东
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BYD Co Ltd
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BYD Co Ltd
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Abstract

The invention relates to a die for forming a part flanging at a time and a design method thereof. The die comprises a first extended surface, a second extended surface, a third extended surface, a fourth extended surface and a stretched surface. The fourth extended surface is adjacently connected with the boundary of one lateral side of the first extended surface. The second extended surface and the third extended surface are respectively adjacently connected with the boundaries of two adjacent lateral sides of the fourth extended surface. The stretched surface is adjacently connected with the first extended surface by a first fillet surface. The second extended surface, the stretched surface, the first fillet surface and the first extended surface are adjacently connected with each other by a second fillet surface. The invention can greatly reduce the design and manufacture cost of the die, so as to reduce the production cost of the part. Simultaneously, the flanging does not have a sequence, so the situation that the secondary flanging process changes the position and the shape of the first flanging can not occur, thereby causing no influence on the molding quality of the part.

Description

The mould and the method for designing thereof that are used for parts flanged-edge formed in one piece
Technical field
The present invention relates to mould manufacturing field, more particularly, relate to a kind of mould and method for designing thereof that is used for parts flanged-edge formed in one piece.
Background technology
In auto manufacturing, most of automobile metal plate work all is to utilize diel finally stamping forming through multiple working procedure.And in the moulding process of many vehicle sheet metal components, overturning process is a wherein requisite procedure.And for some complex-shaped parts, since the particularity that its flange requires, the more than preface of overturning process possibility, the needs that have are through secondary even three flange, therefore also just correspondingly need two covers even three cover flanging dies, just can finish the final molding of part, reach its shape need.
For example, part shown in Figure 1, it comprise principal plane 1, with flange 2 of the borderline phase adjacency of a side of principal plane 1 and respectively with the forward secondary flange 3 and the side direction secondary flange 4 of the borderline phase adjacency of two adjacent side of a described flange 2.For this part, must could form these flange through twice overturning process usually with tangible priority flange sequence requirement.
For example, after product early stage, forming process was finished, carry out positive flange earlier, form flange 2 and forward secondary flange 3, as shown in Figure 2.Then, carry out side flanging again, form side direction secondary flange 4, thereby obtain part as shown in Figure 1.But the defective of this forming method is, because overturning process need carry out side flanging for the second time, so mould structure is comparatively complicated, and need two cover flanging dies, so the Mould design manufacturing cost is very high, thus directly cause the production cost of part to increase.
Perhaps as selecting, also can after early stage, forming process was finished, carry out positive flange earlier at product, form forward secondary flange 3 and side direction secondary flange 4, as shown in Figure 3.Then, carry out once positive flange again, form one time flange 2, thereby obtain part as shown in Figure 1.Though this kind forming method needn't carry out side flanging, has simplified mould structure, still need two cover flanging dies, so the Mould design manufacturing cost is very high, thereby directly causes the production cost of part to increase.And carrying out second time flange when forming a flange 2, and can't be guaranteed by the forward secondary flange 3 that the first time, overturning process formed and the position and the form tolerance of side direction secondary flange 4, therefore influenced the Forming Quality of part.
Summary of the invention
The purpose of this invention is to provide and a kind ofly can reduce the Mould design manufacturing cost, thereby reduce the production cost of part, can guarantee the mould that is used for parts flanged-edge formed in one piece of the Forming Quality of part simultaneously again.Another object of the present invention provides a kind of this Mould design method.
The invention provides a kind of mould that is used for the once-forming parts flanged-edge, wherein, described mould comprises first expanding surface, second expanding surface, the 3rd expanding surface, the 4th expanding surface and stretching face, the borderline phase adjacency of a side of described the 4th expanding surface and first expanding surface, described second expanding surface and the 3rd expanding surface respectively with the borderline phase adjacency of two adjacent side of described the 4th expanding surface, adjacent between the described stretching face and first expanding surface by first hollows, described second expanding surface and the stretching face, adjacent between first hollows and first expanding surface by second hollows.
The invention provides a kind of Mould design method that is used for parts flanged-edge formed in one piece, described part comprises principal plane, a flange with the borderline phase adjacency of a side of principal plane, and respectively with the forward secondary flange and the side direction secondary flange of the borderline phase adjacency of two adjacent side of a described flange, wherein, described method comprises: described principal plane extension is obtained first expanding surface, described side direction secondary flange extension is obtained second expanding surface, described forward secondary flange extension is obtained the 3rd expanding surface, described flange extension is obtained the 4th expanding surface, the crossing intersection that obtains of described first expanding surface and second expanding surface, one end end points of described intersection is positioned on the border of principal plane, and other end end points is positioned at outside the border extended line of root fillet of described side direction secondary flange; Be offset outside the rounded at the edge alignment with described side direction secondary flange in described second expanding surface and form the skew fillet line, make tangent line to the skew fillet line from the described other end end points of intersection; Tangent line stretched along the normal direction of described side direction secondary flange obtains stretching face, the rounding operation is carried out in the stretching face and the first expanding surface connection, to obtain first hollows; Second expanding surface and stretching face, first hollows and the first expanding surface connection are carried out the rounding operation, to obtain second hollows.
Utilize flanging die provided by the invention, can be to obviously having the flange sequencing, usually need two molds, the parts flanged-edge that different flange form respectively carried out the flange moulding simultaneously through twice overturning process, promptly only with this overlap flanging die, through overturning process can the one-shot forming part each flange, therefore greatly reduce the Mould design manufacturing cost, thereby reduced the production cost of part.Simultaneously, owing to there is not the flange sequencing,, therefore can not produce any influence to the Forming Quality of part so the situation that the secondary turn-up process makes that the position shape of a flange changes can not take place.
Description of drawings
Fig. 1 be method for designing of the present invention at the structural representation of part;
Fig. 2 utilizes prior art flange moulding part shown in Figure 1, the structural representation of product after finishing the overturning process first time;
Fig. 3 utilizes another prior art flange moulding part shown in Figure 1, the structural representation of product after finishing the overturning process first time;
Fig. 4 is the schematic diagram of explanation mould provided by the invention and method for designing thereof;
Fig. 5 is the original state schematic diagram that simulation utilizes the forming process when coming flange moulding part shown in Figure 1 by flanging die provided by the invention;
Fig. 6 is the intermediateness schematic diagram that simulation utilizes the forming process when coming flange moulding part shown in Figure 1 by flanging die provided by the invention;
Fig. 7 is the end-state schematic diagram that simulation utilizes the forming process when coming flange moulding part shown in Figure 1 by flanging die provided by the invention.
The specific embodiment
Below, in conjunction with the accompanying drawings, the present invention is described in detail.
At first, as shown in Figure 4, mould that is used for parts flanged-edge formed in one piece provided by the invention and method for designing thereof at part comprise principal plane 1, a flange 2 with the borderline phase adjacency of a side of principal plane 1, and respectively with the forward secondary flange 3 and the side direction secondary flange 4 of the borderline phase adjacency of two adjacent side of a described flange 2, wherein, the border extended line of the root fillet of described side direction secondary flange 4 is indicated with numeral 8, the rounded at the edge line of described side direction secondary flange 4 is indicated with numeral 9, have flange breach 15 between described principal plane 1 and the side direction secondary flange 4, described principal plane 1 and flange 2 connections have the 3rd hollows 16.
The mould that is used for the once-forming parts flanged-edge provided by the invention comprises first expanding surface 5, second expanding surface 6, the 3rd expanding surface 17 (Fig. 4 only illustrates the part), the 4th expanding surface (among Fig. 4 because blocking of a flange 2 and not shown) and stretching face 12.The borderline phase of a side of described the 4th expanding surface and first expanding surface 5 is in abutting connection with also passing through the hollows transition, described second expanding surface 6 and the 3rd expanding surface 17 respectively with the borderline phase of two adjacent side of described the 4th expanding surface in abutting connection with and by the hollows transition, also pass through the hollows transition between second expanding surface 6 and the 3rd expanding surface 17, adjacent between the described stretching face 12 and first expanding surface 5 by first hollows 13, adjacent between described second expanding surface 6 and stretching face 12, first hollows 13 and first expanding surface 5 by second hollows 14.Wherein, the radius of corner of described first hollows 13 is the 7-11 millimeter, is preferably 10 millimeters.The radius of corner of described second hollows 14 equals the radius of corner of the 3rd hollows 16 of described principal plane 1 and flange 2 connections.
Below, the Mould design method that is used for parts flanged-edge formed in one piece provided by the invention is described.
The described die design method that is used for parts flanged-edge formed in one piece comprises: described principal plane 1 extension is obtained first expanding surface 5, described side direction secondary flange 4 extensions are obtained second expanding surface 6, described forward secondary flange 3 extensions are obtained the 3rd expanding surface 17 (part only is shown among Fig. 4), a described flange 2 extended obtain the 4th expanding surface (among Fig. 4 because blocking of a flange 2 and not shown), described first expanding surface 5 and second expanding surface, the 6 crossing intersections 7 that obtain, one end end points of described intersection 7 is positioned on the border of principal plane 1, and other end end points is positioned at outside the border extended line 8 of root fillet of described side direction secondary flange 4; Rounded at the edge line 9 with described side direction secondary flange 4 in described second expanding surface 6 outwards is offset formation skew fillet line 10, makes tangent line 11 from the described other end end points of intersection 7 to skew fillet line 10; Tangent line 11 stretched along the normal direction of described side direction secondary flange 4 obtains stretching face 12, rounding is carried out in stretching face 12 and first expanding surface, 5 connections operate, to obtain first hollows 13; The rounding operation is carried out in second expanding surface 6 and stretching face 12, first hollows 13 and first expanding surface, 5 connections, to obtain second hollows 14.
Wherein, the length of described intersection 7 is the radius of corner that the line length L15 of the flange breach 15 between described principal plane 1 and the side direction secondary flange 4 deducts first hollows 13.The radius of corner of described first hollows 13 is generally the 7-11 millimeter, is preferably 10 millimeters.
Offset distance L9 between described skew fillet line 10 and the rounded at the edge line 9 is that the radius of corner of second hollows 14 adds correction value, and described correction value is generally the 1-5 millimeter, is preferably 3 millimeters.
The radius of corner of described second hollows 14 equals the radius of corner of the 3rd hollows 16 of described principal plane 1 and flange 2 connections.
Below, with reference to Fig. 5-Fig. 7 effect of the present invention is described, Fig. 5-Fig. 7 has represented to simulate product original state, product intermediateness and the product end-state of the forming process when utilizing the flanging die that is obtained by method for designing design provided by the invention to come flange moulding part shown in Figure 1 respectively.As can be seen from the figure, when utilizing the flanging die that is obtained by method for designing design provided by the invention to come flange moulding part shown in Figure 1, one time flange 2 begins to take shape at first, as shown in Figure 5.Then, along with going deep into of process, when a flange 2 further formed, side direction secondary flange 4 progressively formed, as shown in Figure 6.Finally, progressively be shaped in the process of desired shape at flange 2 and side direction secondary flange 4, forward secondary flange 3 also final molding is desired shape.Thereby as can be seen, only utilize this cover flanging die that obtains by method for designing design provided by the invention, can finish and obviously have the flange sequencing, the flange moulding of the part that usually needs two molds, just can finish through twice overturning process, therefore greatly reduce the Mould design manufacturing cost, thereby reduced the production cost of part, also can not produce any influence simultaneously the Forming Quality of part.

Claims (7)

1. mould that is used for the once-forming parts flanged-edge, it is characterized in that, described mould comprises first expanding surface (5), second expanding surface (6), the 3rd expanding surface (17), the 4th expanding surface and stretching face (12), the borderline phase adjacency of a side of described the 4th expanding surface and first expanding surface (5), described second expanding surface (6) and the 3rd expanding surface (17) respectively with the borderline phase adjacency of two adjacent side of described the 4th expanding surface, adjacent between described stretching face (12) and first expanding surface (5) by first hollows (13), described second expanding surface (6) and stretching face (12), adjacent between first hollows (13) and first expanding surface (5) by second hollows (14).
2. mould according to claim 1, wherein, the radius of corner of described first hollows (13) is the 7-11 millimeter.
3. Mould design method that is used for parts flanged-edge formed in one piece, described part comprises principal plane (1), flange (2) with the borderline phase adjacency of a side of principal plane (1), and respectively with the forward secondary flange (3) and the side direction secondary flange (4) of the borderline phase adjacency of two adjacent side of a described flange (2), it is characterized in that, described method comprises: described principal plane (1) extension is obtained first expanding surface (5), described side direction secondary flange (4) extension is obtained second expanding surface (6), described forward secondary flange (3) extension is obtained the 3rd expanding surface (17), a described flange (2) extension is obtained the 4th expanding surface, the crossing intersection (7) that obtains of described first expanding surface (5) and second expanding surface (6), one end end points of described intersection (7) is positioned on the border of principal plane (1), and other end end points is positioned at outside the border extended line (8) of root fillet of described side direction secondary flange (4); Rounded at the edge line (9) with described side direction secondary flange (4) in described second expanding surface (6) outwards is offset formation skew fillet line (10), makes tangent line (11) from the described other end end points of intersection (7) to skew fillet line (10); Tangent line (11) stretched along the normal direction of described side direction secondary flange (4) obtains stretching face (12), the rounding operation is carried out in stretching face (12) and first expanding surface (5) connection, to obtain first hollows (13); The rounding operation is carried out in second expanding surface (6) and stretching face (12), first hollows (13) and first expanding surface (5) connection, to obtain second hollows (14).
4. method for designing according to claim 3, wherein, the length of described intersection (7) is the radius of corner that the line length (L15) of the flange breach (15) between described principal plane (1) and the side direction secondary flange (4) deducts first hollows (13).
5. method for designing according to claim 3, wherein, the radius of corner of described first hollows (13) is the 7-11 millimeter.
6. method for designing according to claim 3, wherein, the offset distance (L9) between described skew fillet line (10) and the rounded at the edge line (9) is that the radius of corner of second hollows (14) adds correction value, described correction value is the 1-5 millimeter.
7. method for designing according to claim 3, wherein, the radius of corner of described second hollows (14) equals the radius of corner of the 3rd hollows (16) of described principal plane (1) and a flange (2) connection.
CN200710143407XA 2007-07-31 2007-07-31 Mold for parts flanged-edge formed in one piece and design method thereof Active CN101357386B (en)

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CN101357386B true CN101357386B (en) 2010-11-17

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Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105716540B (en) * 2016-02-01 2018-05-29 宁德时代新能源科技股份有限公司 Secondary cell square casing and the detection method of head cover R angles mount attribute
CN107755538B (en) * 2016-08-17 2018-12-21 重庆长安汽车股份有限公司 A kind of mold and its method for flanging including combined type flange insert
CN109821949B (en) * 2019-02-27 2021-01-26 赛科利(南京)汽车模具技术应用有限公司 Method for machining contour of pressure plate at cross-cut position on front side of die
CN112371805B (en) * 2020-09-17 2021-11-30 东风汽车集团有限公司 Flanging surface design method, flanging processing die and method, and part

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6739166B1 (en) * 2002-12-17 2004-05-25 General Motors Corporation Method of forming tubular member with flange
CN2855573Y (en) * 2005-10-18 2007-01-10 比亚迪股份有限公司 Die for turning-up edge
CN2912859Y (en) * 2006-07-11 2007-06-20 比亚迪股份有限公司 Flanging mold

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6739166B1 (en) * 2002-12-17 2004-05-25 General Motors Corporation Method of forming tubular member with flange
CN2855573Y (en) * 2005-10-18 2007-01-10 比亚迪股份有限公司 Die for turning-up edge
CN2912859Y (en) * 2006-07-11 2007-06-20 比亚迪股份有限公司 Flanging mold

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
JP特开2002-336914A 2002.11.26
JP特开平8-10879A 1996.01.16

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Date Code Title Description
C06 Publication
PB01 Publication
LIC Patent licence contract for exploitation submitted for record

Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2008.4.25 TO 2014.6.7; CHANGE OF CONTRACT

Name of requester: BEIJING BIYADI DIE CO.,LTD.

Effective date: 20080504

EE01 Entry into force of recordation of patent licensing contract

Assignee: Beijing BYD Mould Co., Ltd.

Assignor: Biyadi Co., Ltd.

Contract fulfillment period: 2008.4.25 to 2014.6.7 contract change

Contract record no.: 2008440000064

Denomination of invention: Mold for parts flanged-edge formed in one piece and design method thereof

License type: Exclusive license

Record date: 2008.5.4

C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant