CN110193559A - Improve the mold of curved surface flange forming defect - Google Patents
Improve the mold of curved surface flange forming defect Download PDFInfo
- Publication number
- CN110193559A CN110193559A CN201910510554.9A CN201910510554A CN110193559A CN 110193559 A CN110193559 A CN 110193559A CN 201910510554 A CN201910510554 A CN 201910510554A CN 110193559 A CN110193559 A CN 110193559A
- Authority
- CN
- China
- Prior art keywords
- flange
- bead
- upper cavity
- curved surface
- cavity die
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000007547 defect Effects 0.000 title claims abstract description 17
- 239000011324 bead Substances 0.000 claims abstract description 42
- 238000000465 moulding Methods 0.000 claims abstract description 7
- 210000003205 muscle Anatomy 0.000 claims description 9
- 239000004744 fabric Substances 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 13
- 239000000463 material Substances 0.000 abstract description 12
- 230000000694 effects Effects 0.000 abstract description 2
- 238000005452 bending Methods 0.000 description 5
- 238000004088 simulation Methods 0.000 description 4
- 238000009825 accumulation Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/10—Die sets; Pillar guides
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
The present invention provides a kind of molds for improving curved surface flange forming defect, including upper and lower die holder, upper cavity die, lower punch are respectively arranged on upper and lower die holder, bead is provided in the flange forming surface of upper cavity die, the bead, which is arranged in the flange forming surface of upper cavity die, corresponds to flange molding posterior segment position.As shown from the above technical solution, bead is provided in the flange forming surface of upper cavity die, when coming into effect flange operation after the completion of the curved surface forming process of plate, bead starts to intervene in the posterior segment of flange forming process, by force flow the material in flange region in flange forming process, to be improved to forming defect and be eliminated.
Description
Technical field
The present invention relates to a kind of methods for improving curved surface flange forming defect using bead, belong to stamping die field.
Background technique
It is relatively conventional for complicated plates of automobile structure mean camber curve flange class formation and plates of automobile structure is set
Part more difficult in meter, main difficulty is that good appearance forming condition is not achieved, and mainly occurs wrinkling and rupturing
Defect.
Summary of the invention
The object of the present invention is to provide a kind of molds for improving curved surface flange forming defect.
To achieve the above object, the invention adopts the following technical scheme: mold includes upper and lower die holder, on upper and lower die holder
It is respectively arranged with upper cavity die, lower punch, bead is provided in the flange forming surface of upper cavity die, the bead is arranged in
Correspond to flange in the flange forming surface of cavity plate and forms posterior segment position.
As shown from the above technical solution, it is provided with bead in the flange forming surface of upper cavity die, when the curved surface forming of plate
When coming into effect flange operation after the completion of process, bead starts to intervene in the posterior segment of flange forming process, and flange formed
By force flow the material in flange region in journey, to be improved to forming defect and be eliminated.
Detailed description of the invention
Fig. 1 is the assembling structure schematic diagram of curved surface flanging die；
Fig. 2 is curved surface flanging die CAE simulation drawing；
Fig. 3 is cross-section bead CAE simulation drawing on lower punch；
Fig. 4 is that bead CAE simulation drawing is mixed on upper cavity die；
Fig. 5 a, the four-stage figure that 5b, 5c, 5d are plate shaping.
Specific embodiment
In conjunction with shown in Fig. 1,4,5, improve the mold of curved surface flange forming defect, including upper and lower die holder 10,20, upper and lower mould
It is respectively arranged with upper cavity die 30, lower punch 40 on seat 10,20, bead 31, institute are provided in the flange forming surface of upper cavity die 30
The bead 31 stated, which is arranged in the flange forming surface of upper cavity die 30, corresponds to flange molding posterior segment position.Preferably, institute
The bead 31 stated is non-constant section along the section of muscle length direction.
Turn-up portion point forming defect is eliminated by the unequal section bead 31 of the mixing shape in above scheme, plate
Unequal section bead 31 by force flows the material in flange region in material A forming process, to carry out to forming defect
Improve and eliminates.
The upper die holder 10 of 30 side of upper cavity die, which extends downwardly, is disposed with pressure plate 70, the curved surface of pressure plate 70 and lower punch 40
The curved surface forming of flitch is implemented in forming surface cooperation.
Curved draw muscle 41, institute are provided on the lower punch 40 in the curved surface forming region that pressure plate 70 and lower punch 40 cooperate
The pressure plate 70 stated will be designed according to the bending radius of part, it is ensured that can be molded with lower punch 40, complete plane
The brake forming of blank.
The curved draw muscle 41 is cross-section along muscle length direction, and main function improves the resistance of material flowing into one
Step is improved and is eliminated to forming defect.
Balance plate 50 is provided on lower die holder 20, balance plate 50 against fiting constraint and draws with vertical side on upper cavity die 30
That leads upper cavity die 30 moves down track.The balance plate 50 is used to constraining and limiting the movement rail in 30 folding process of upper cavity die
Mark, as long as guaranteeing the motion profile of upper cavity die 30 along vertical Z-direction.
Lower punch 40, balance plate 50 are fixedly connected on lower die holder 20 by fixed plate 60 is adjustable.
By adopting the above technical scheme, the simple cross-section bead of structure is arranged on lower punch 40 by the present invention, can
Guarantee brake forming, and controls the flowing velocity of material；Complicated unequal section mixing bead 31 is arranged in fovea superior
On mould 30, subregion improvement can be carried out to the forming defect of flange part.
According to shape of the blank before flange, flange class part can be divided into plane flange and curved surface flange；According to turning over
Edge direction turns over the projection of shape in sideline, and flange can be divided into straight line flange and curve flange；According to the crooked sheet material center of curvature
With the positional relationship of flange part, curved surface flange can be divided into concave curved surface flange and convex surface flange；According to the flange line center of curvature
With the positional relationship of the plate center of curvature, curved surface flange can be divided into straight line flange, evagination flange and indent flange.To above-mentioned each
Kind flange relationship is combined, and 6 kinds of curved surface flange types can be obtained.
As shown in Fig. 2, curved surface flanging die CAE simulation drawing comprising: upper cavity die 30, lower punch 40, pressure plate 70 and plate
Expect A, according to the distributing position of above four modules, determines that molding mode of the invention is double acting drawing and moulding, i.e. pressure plate 70
The movement for first doing Z-direction completes the brake forming of plate A when pressure plate 70 is combined with lower punch 40.
As shown in figure 3, the arrangement of the cross-section bead 41 on lower punch 40, the main function of this cross-section bead 41
It is the flow rate for controlling plate A feeding, during pressure plate 70 is combined with lower punch 40, cross-section bead 41 can make
The bending part of part is deformed, in order to not influence bending part shape according to the length of spares bend part, cut equal
X-direction of the face bead 41 in Fig. 3 is moved, it is ensured that length of the cross-section bead 41 in spares bend part is outside one's consideration.
As shown in figure 4, the arrangement of the unequal section bead 31 mixed on upper cavity die 3, the main function of this bead are
Part is improved in the Forming Quality of flange part, and divides the distribution situation of forming defect according to turn-up portion, bead is divided
Section is to form the unequal section bead 31 of mixing, it is three sections that mixing unequal section bead 31 of the invention, which divides,.
The mechanism of Forming Quality is improved using mixing unequal section bead 31: since the upper cavity die 3 in mold is movement
, bead 31 is arranged on upper cavity die 30, so that bead 31 is also movement in plate A forming process.Movement
Bead 31 can force material to generate flowing, prevent the forming defect unevenly generated due to material stacking or flow direction；
Since the accumulation degree of flange region each section material and flow direction are different, so need to be segmented bead,
Different Drawbead Restraining Forces is arranged according to the accumulation degree and flow direction difference of material in every section of bead, accomplishes the accumulation of material
Degree is consistent with flow direction.
As shown in figure 5, the forming process of plate A is divided into 4 stages.Stage one, pressure plate 70 are combined with lower punch 40,
The bending part of part is completed at this time.Due to having cross-section bead 41 on upper male mould 40, so that the bending part of part generates
The deformation coincideing with bead in subsequent trimming process is that can cut as long as this deformation arranges the position of bead
It removes；Stage two and three, upper cavity die 30 start intervention and carry out preliminary flange molding to the crooked sheet material in stage one, turn at this time
The forming defect of rim portion is more serious and obvious, but mixes the not intervention work of unequal section bead 31；Stage four,
The three above stage it is preliminary it is molding on the basis of, mix unequal section bead 31 at this time and start to intervene work.Mixing is not waited and is cut
Face bead 31 moves under the drive of upper cavity die 3 along Z-direction, until upper cavity die 3 is combined with lower punch 40, forming process knot
Beam.
Claims (7)
1. a kind of mold for improving curved surface flange forming defect, including upper and lower die holder (10,20), on upper and lower die holder (10,20)
It is respectively arranged with upper cavity die (30), lower punch (40), it is characterised in that: be provided with drawing in the flange forming surface of upper cavity die (30)
Muscle (31), the bead (31), which is arranged in the flange forming surface of upper cavity die (30), corresponds to flange molding posterior segment position
It sets.
2. mold according to claim 1, it is characterised in that: the bead (31) is non-along the section of muscle length direction
Cross-section.
3. mold according to claim 1, it is characterised in that: the upper die holder (10) of upper cavity die (30) side extends downwardly cloth
It is equipped with pressure plate (70), the curved surface forming of flitch is implemented in the curved surface forming face cooperation of pressure plate (70) and lower punch (40).
4. mold according to claim 3, it is characterised in that: the curved surface forming of pressure plate (70) and lower punch (40) cooperation
Curved draw muscle (41) are provided on the lower punch (40) in region.
5. mold according to claim 4, it is characterised in that: the curved draw muscle (41) is to wait to cut along muscle length direction
Face.
6. mold according to claim 1 or 2, it is characterised in that: be provided with balance plate (50), balance on lower die holder (20)
Vertical side is against fiting constraint on plate (50) and upper cavity die (30) and guide upper cavity die (30) move down track.
7. mold according to claim 6, it is characterised in that: lower punch (40), balance plate (50) can by fixed plate (60)
Mode is fixedly connected on lower die holder (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910510554.9A CN110193559A (en) | 2019-06-13 | 2019-06-13 | Improve the mold of curved surface flange forming defect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910510554.9A CN110193559A (en) | 2019-06-13 | 2019-06-13 | Improve the mold of curved surface flange forming defect |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110193559A true CN110193559A (en) | 2019-09-03 |
Family
ID=67754515
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910510554.9A Pending CN110193559A (en) | 2019-06-13 | 2019-06-13 | Improve the mold of curved surface flange forming defect |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110193559A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100024510A1 (en) * | 2008-07-30 | 2010-02-04 | Hirotec Corporation | Press die set for forming flange and flange forming method |
| CN201702259U (en) * | 2010-04-28 | 2011-01-12 | 柳州广菱模具技术有限公司 | Flanged die with flanged overall ejector |
| CN203140572U (en) * | 2012-12-17 | 2013-08-21 | 安徽吉峰技研有限公司 | Flanging reinforcement mold |
| CN107570586A (en) * | 2017-09-07 | 2018-01-12 | 安徽江淮汽车集团股份有限公司 | A kind of process and mould structure for solving the high flange cracking such as arc |
| CN208083194U (en) * | 2018-03-13 | 2018-11-13 | 马鞍山钢铁股份有限公司 | A kind of anti-rebound flanging die |
| CN208542839U (en) * | 2018-07-10 | 2019-02-26 | 重庆通达模具有限公司 | A kind of B column molding flanging die |
| CN208542838U (en) * | 2018-07-10 | 2019-02-26 | 重庆通达模具有限公司 | A kind of automobile front longitudinal beam molding flanging die |
| KR101952668B1 (en) * | 2019-01-15 | 2019-02-27 | 주식회사 코디마 | Method for manufacturing coil housing |
| CN109807238A (en) * | 2017-11-21 | 2019-05-28 | 天津世亚模具股份有限公司 | A kind of molding die device of realization drawing flange |
-
2019
- 2019-06-13 CN CN201910510554.9A patent/CN110193559A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100024510A1 (en) * | 2008-07-30 | 2010-02-04 | Hirotec Corporation | Press die set for forming flange and flange forming method |
| CN201702259U (en) * | 2010-04-28 | 2011-01-12 | 柳州广菱模具技术有限公司 | Flanged die with flanged overall ejector |
| CN203140572U (en) * | 2012-12-17 | 2013-08-21 | 安徽吉峰技研有限公司 | Flanging reinforcement mold |
| CN107570586A (en) * | 2017-09-07 | 2018-01-12 | 安徽江淮汽车集团股份有限公司 | A kind of process and mould structure for solving the high flange cracking such as arc |
| CN109807238A (en) * | 2017-11-21 | 2019-05-28 | 天津世亚模具股份有限公司 | A kind of molding die device of realization drawing flange |
| CN208083194U (en) * | 2018-03-13 | 2018-11-13 | 马鞍山钢铁股份有限公司 | A kind of anti-rebound flanging die |
| CN208542839U (en) * | 2018-07-10 | 2019-02-26 | 重庆通达模具有限公司 | A kind of B column molding flanging die |
| CN208542838U (en) * | 2018-07-10 | 2019-02-26 | 重庆通达模具有限公司 | A kind of automobile front longitudinal beam molding flanging die |
| KR101952668B1 (en) * | 2019-01-15 | 2019-02-27 | 주식회사 코디마 | Method for manufacturing coil housing |
Non-Patent Citations (2)
| Title |
|---|
| 李军: "拉延筋对曲面曲线翻边的成形影响研究", 《汽车工程学报》 * |
| 李军等: "拉延筋在板料翻边成形回弹中的应用及影响", 《塑性工程学报》 * |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190903 |
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| RJ01 | Rejection of invention patent application after publication |