CN107159770A - A kind of drawing method for aluminium sheet product - Google Patents
A kind of drawing method for aluminium sheet product Download PDFInfo
- Publication number
- CN107159770A CN107159770A CN201611192189.4A CN201611192189A CN107159770A CN 107159770 A CN107159770 A CN 107159770A CN 201611192189 A CN201611192189 A CN 201611192189A CN 107159770 A CN107159770 A CN 107159770A
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- China
- Prior art keywords
- product
- sequence
- blank holder
- lower mould
- sequence drawing
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Classifications
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- 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
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/20—Deep-drawing
- B21D22/22—Deep-drawing with devices for holding the edge of the blanks
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
The invention provides a kind of drawing method for aluminium sheet product, belong to stamping die of automotive covering part field, including the first step：Divide a sequence drawing region and two sequence drawing regions；Second step：Drawing blank holder is designed according to product material；3rd step：Product material is placed on the blank holder, completes a sequence drawing drape forming of product；4th step：Material pressing core is designed according to the sequence drawing region divided in the first step, the material pressing core is fixedly connected with upper mould；5th step：The product material of one sequence drawing and moulding is placed on lower mould and the blank holder, the material pressing core is closed with lower mould, post forming is no longer participate in using molded part in the 4th step as pressing region, upper mould moves downward that elder generation and blank holder are closed and the two is moved downwardly together, until being closed with lower mould, two sequence drawing drape formings of product.The present invention sets two sequence drawings, makes uniform in shaping, it is to avoid corrugation and the appearance of cracking phenomena.
Description
Technical field
The invention belongs to stamping die of automotive covering part field, more particularly to a kind of drawing method for aluminium sheet product.
Background technology
Required as automobile panel is light-weighted, increasing alumiaum article is used for the design of automobile panel.By
In the special performance of aluminium sheet, more complicated product can not be molded by a single draw.
The method used at this stage is mainly the single draw of traditional approach, its shortcoming for it is following some：
1), because aluminium sheet material yield strength is low, there is serious rise in product forming process in the features such as tensile capacity is poor
Wrinkle and cracking phenomena, product difficult forming.
2), traditional solution is：A. the product change preferable material of performance is required, it is necessary to confirm the possibility of material change
Property；B. change product-forming is consulted with client, so that product is molded.The so whole design phase will extend consults ditch with client
The logical time.
The content of the invention
The problem to be solved in the present invention is to be to provide a kind of method of drawing continuous more than once, farthest protection
The region of drawing and moulding, makes it be no longer participate in shaping, its reduction is greatly reduced, while making a drawing not become fully
The region of shape participates in shaping, makes uniform in shaping, it is to avoid corrugation and the appearance of cracking phenomena.
In order to solve the above technical problems, the technical solution adopted by the present invention is：A kind of drawing method for aluminium sheet product,
Including the first step：Divide a sequence drawing region and two sequence drawing regions；
Second step：Drawing blank holder is designed according to product material, the blank holder is slided up and down with lower mould and is connected, described
Blank holder is located between mould and lower mould；
3rd step：Product material is placed on the blank holder, and lower mould transfixion, upper mould is moved downward, first with it is described
Blank holder is closed, and then the blank holder pushes down product material and continues to move downward with upper mould, until upper mould is closed with lower mould, material
Piece completes a drawing, a sequence drawing drape forming of product；
4th step：Material pressing core is designed according to the sequence drawing region that is divided in the first step, the external boundary of the material pressing core with
The external boundary in the one sequence drawing area is identical, and the shape of the material pressing core is identical with product finished form, the material pressing core with it is upper
Mould is fixedly connected；
5th step：The product material of one sequence drawing and moulding is placed on lower mould and the blank holder, and the material pressing core is with
Mould is closed, and post forming is no longer participate in using molded part in the 4th step as pressing region, upper mould move downward first with
Blank holder is closed and the two is moved downwardly together, until being closed with lower mould, two sequence drawing drape formings of product.
Further, the blank holder is more than product material border 20mm~40mm.
Further, in the first step, the sequence drawing region and the two respective drawing depths in sequence drawing region
Ensure basic wait deeply, using the inner ring of more gentle secondary step as a drawing region.
Further, in the 3rd step, data analysis, the product material elongation of a sequence drawing are carried out using CAE
More than 3% and less than 15%, sequence drawing corrugation coefficient is less than or equal to 5.
Further, in the 5th step, data analysis, the product material elongation of two sequence drawings are carried out using CAE
More than 3% and less than 15%, two sequence drawings corrugation coefficient is less than or equal to 5.
Further, in the 5th step, the determination of two sequence drawing depths：Product according to a sequence drawing is in normal temperature shape
State, the beat of one minute 16 times on the premise of product does not produce rupture and ridging defect, meets secondary drawing in normal temperature shape
State, the beat of one minute 16 times, product does not produce rupture and corrugated defect.
Compared with prior art, the present invention has the advantages and positive effects of：1st, the present invention uses the side of two sequence drawings
Method, by the setting of material pressing core, i.e., farthest protects the region of a sequence drawing and moulding, it is no longer participate in shaping, greatly
Reduction its be thinned, while making the region that a sequence do not deform fully participate in shaping, make uniform in shaping, it is to avoid corrugation and cracking are existing
The appearance of elephant, it is ensured that product face quality, improves the qualification rate of product.
Brief description of the drawings
The accompanying drawing for constituting the part of the present invention is used for providing a further understanding of the present invention, schematic reality of the invention
Apply example and its illustrate to be used to explain the present invention, do not constitute inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is a kind of structural representation of sequence drawing of drawing method one for aluminium sheet product of the invention；
Fig. 2 is a kind of structural representation of sequence drawing of drawing method two for aluminium sheet product of the invention；
Fig. 3 is the structural representation of secondary step of the invention；
Fig. 4 is the structural representation of secondary step of the invention；
Fig. 5 is the structural representation of product 1 of the present invention；
Fig. 6 is the structural representation of product 1 of the present invention.
Reference：
1- molds；Mould under 2-；3- blank holders；4- material pressing cores；One sequence drawing boundary line of 5- products 1；Bis- steps of 6-；
Two sequence drawing boundary lines of 7- products 1；One sequence drawing boundary line of 8- products 2；Two sequence drawing boundary lines of 9- products 2.
Embodiment
It should be noted that in the case where not conflicting, the embodiment in the present invention and the feature in embodiment can phases
Mutually combination.
In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " on ", " under ",
The orientation or position relationship of the instruction such as "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer " are
Based on orientation shown in the drawings or position relationship, it is for only for ease of the description present invention and simplifies description, rather than indicate or dark
Specific orientation must be had, with specific azimuth configuration and operation by showing the device or element of meaning, therefore it is not intended that right
The limitation of the present invention.In addition, term " first ", " second " etc. are only used for describing purpose, and it is not intended that indicating or implying phase
To importance or the implicit quantity for indicating indicated technical characteristic.Thus, the feature for defining " first ", " second " etc. can
To express or implicitly include one or more this feature.In the description of the invention, unless otherwise indicated, " multiple "
It is meant that two or more.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can
To be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected to by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, above-mentioned term can be understood by concrete condition
Concrete meaning in the present invention.
The specific embodiment of the present invention is elaborated below in conjunction with the accompanying drawings.
As depicted in figs. 1 and 2, it is of the invention for a kind of drawing method for aluminium sheet product, including the first step：Divide a sequence
Drawing region and two sequence drawing regions；
Second step：Drawing blank holder is designed according to product material, the blank holder is slided up and down with lower mould and is connected, described
Blank holder is located between mould and lower mould；
3rd step：Product material is placed on the blank holder, and lower mould transfixion, upper mould is moved downward, first with it is described
Blank holder is closed, and then the blank holder pushes down product material and continues to move downward with upper mould, until upper mould is closed with lower mould, material
Piece completes a drawing, a sequence drawing drape forming of product；
4th step：Material pressing core is designed according to the sequence drawing region that is divided in the first step, the external boundary of the material pressing core with
The external boundary in the one sequence drawing area is identical, and the shape of the material pressing core is identical with product finished form, the material pressing core with it is upper
Mould is fixedly connected；
5th step：The product material of one sequence drawing and moulding is placed on lower mould and the blank holder, and the material pressing core is with
Mould is closed, and post forming is no longer participate in using molded part in the 4th step as pressing region, upper mould move downward first with
Blank holder is closed and the two is moved downwardly together, until being closed with lower mould, two sequence drawing drape formings of product.
Preferably, the blank holder is more than product material border 20mm~40mm.
Preferably, in the first step, the respective drawing depth in the sequence drawing region and two sequence drawing regions is protected
Card is basic to wait deep, i.e., Z-direction height difference is equal, and difference 3mm belongs to normal, can receive, with more gentle secondary step
Inner ring is a drawing region, gentle transition, it is ensured that when blank holder and upper mould closure, and blank, which is presented, to rise and fall gently, and nothing drastically becomes
Change and corrugated state, secondary step surface finger-type face is less than 30 ° of face, as shown in Figure 3 and Figure 4, secondary with X/Y plane angle
The region drawing depth of rank more than 6 waits deep substantially.
Preferably, in the 3rd step, data analysis is carried out using CAE, the product material elongation of a sequence drawing is big
In 3% and less than 15%, that is, it is thinned and is no more than 15%, sequence drawing corrugation coefficient is less than or equal to 5；It is highly preferred that described
In five steps, data analysis is carried out using CAE, the product material elongation of two sequence drawings is more than 3% and less than 15%, that is, is thinned not
More than 15%, otherwise just belong to cracking state, two sequence drawings corrugation coefficient is less than or equal to 5, otherwise product will produce fold and
Can not eliminate, in CAE analysis, be thinned be no more than 15% in the case of, a sequence stretching depth is the bigger the better, with product finished product into
Product are unanimously optimum state.
Preferably, in the 5th step, two sequence drawing depths (the contour number needed to the reverse movement of pressing direction
Value) determination：Product according to a sequence drawing is in normal temperature state, and the beat of one minute 16 times, product does not produce rupture and risen
On the premise of defect of wrinkling, secondary drawing is met in normal temperature state, the beat of one minute 16 times, product does not produce rupture and wrinkled
Defect.
During actual use, a sequence drawing is single draw, acts and is：Product material is placed on blank holder,
Punch-pin is as lower mould transfixion, and blank holder sets suitable stroke, and cavity plate is that upper mould is moved downward, and is first closed with blank holder, so
Blank holder pushes down tablet and continues to move downward with cavity plate afterwards, until being closed with punch-pin, product material completes a sequence drawing, and a sequence is drawn
Prolong region (Product Status more than the Z-direction in drawing face) shaping, followed by two sequence drawings：The product material of one sequence shaping is placed
On lower mould and blank holder, material pressing core is closed with lower mould first, and two are no longer participate in using the molded part of a sequence as pressing region
Secondary shaping, upper mould moves downward elder generation and closed with blank holder, and then upper mould is moved downwardly together with blank holder, until being closed with lower mould
Close, so far, two sequences of product drawing are completed, product shaping, according to the difference of product practical structures, if between level it is larger,
And depth drop is larger, three sequence drawings can also be set according to practical structures situation, three sequence drawings need to make after secondary drawing
Make corresponding two sequences material pressing core, it is ensured that in three sequence drawing process, a sequence drawing region and two sequence drawing regions are not involved in three sequences
Drawing and moulding, and the elongation and corrugation coefficient requirements of three sequence drawings are identical with two sequences, can be set for especially complex structure
More drawing order are put, the present invention farthest protects the region of preamble drawing and moulding, it is no longer participate in shaping, greatly
Reduction its be thinned, while making the region that preamble do not deform fully participate in shaping, make uniform in shaping, it is to avoid corrugation and cracking are existing
The appearance of elephant, it is ensured that product face quality, improves the qualification rate of product.
Embodiment 1：As shown in figure 5, a sequence drawing boundary line 5 of product 1 is using inner region as a sequence drawing region, product 1
Two sequence drawing boundary lines 7 and product 1 a sequence drawing boundary line 5 between be product 1 two sequence drawing regions, a sequence stretching
It is thinned and is set to 15%, corrugation coefficient is 2, the reductions of two sequence drawings is set to 13%, after corrugation coefficient is 2, formed product
Qualification rate more than 98%, previous sequence drawing qualification rate be 75% or so, qualification rate is improved more than 20%.
Embodiment 2：As shown in fig. 6, a sequence drawing boundary line 8 of product 2 is using inner region as a sequence drawing region, product 2
Two sequence drawing boundary lines 9 and product 2 a sequence drawing boundary line 8 between be product 2 two sequence drawing regions, a sequence stretching
Be thinned and be set to 14%, crepe ratio is set to 2.8, and the reduction of two sequence drawings is set to 13%, and corrugation coefficient is 3, product into
Qualification rate more than 98% after type, previous sequence drawing qualification rate be 75% or so, qualification rate is improved more than 20%.
One embodiment of the present of invention is described in detail above, but the content is only the preferable implementation of the present invention
Example, it is impossible to be considered as the practical range for limiting the present invention.All equivalent changes made according to the present patent application scope and improvement
Deng within the patent covering scope that all should still belong to the present invention.
Claims (6)
1. a kind of drawing method for aluminium sheet product, it is characterised in that：Comprise the following steps
The first step：Divide a sequence drawing region and two sequence drawing regions；
Second step：Drawing blank holder is designed according to product material, the blank holder is slided up and down with lower mould and is connected, the flanging
Circle is located between mould and lower mould；
3rd step：Product material is placed on the blank holder, and lower mould transfixion, upper mould is moved downward, first with the flanging
Trap is closed, and then the blank holder pushes down product material and continues to move downward with upper mould, until upper mould is closed with lower mould, tablet is complete
Into a drawing, a sequence drawing drape forming of product；
4th step：Material pressing core is designed according to the sequence drawing region that is divided in the first step, the external boundary of the material pressing core with it is described
The external boundary in one sequence drawing area is identical, and the shape of the material pressing core is identical with product finished form, and the material pressing core is consolidated with upper mould
Fixed connection；
5th step：The product material of one sequence drawing and moulding is placed on lower mould and the blank holder, and the material pressing core is closed with lower mould
Close, be no longer participate in post forming using molded part in the 4th step as pressing region, upper mould moves downward elder generation and flanging
Trap is closed and the two is moved downwardly together, until being closed with lower mould, two sequence drawing drape formings of product.
2. a kind of drawing method for aluminium sheet product according to claim 1, it is characterised in that：The blank holder is more than
Product material border 20mm~40mm.
3. a kind of drawing method for aluminium sheet product according to claim 1, it is characterised in that：In the first step
In, the respective drawing depth in the sequence drawing region and two sequence drawing regions ensure it is basic wait depth, with more gentle secondary
The inner ring of step is a drawing region.
4. a kind of drawing method for aluminium sheet product according to claim 1, it is characterised in that：In the 3rd step
In, data analysis is carried out using CAE, the product material elongation of a sequence drawing is more than 3% and less than 15%, sequence drawing corrugation
Coefficient is less than or equal to 5.
5. a kind of drawing method for aluminium sheet product according to claim 1, it is characterised in that：In the 5th step
In, data analysis is carried out using CAE, the product material elongation of two sequence drawings is more than 3% and less than 15%, two sequence drawings corrugation
Coefficient is less than or equal to 5.
6. a kind of drawing method for aluminium sheet product according to claim 1, it is characterised in that：In the 5th step
In, the determination of two sequence drawing depths：Product according to a sequence drawing is in normal temperature state, the beat of one minute 16 times, and product is not
On the premise of producing rupture and ridging defect, secondary drawing is met in normal temperature state, the beat of one minute 16 times, product is not produced
Raw rupture and corrugated defect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611192189.4A CN107159770A (en) | 2016-12-21 | 2016-12-21 | A kind of drawing method for aluminium sheet product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611192189.4A CN107159770A (en) | 2016-12-21 | 2016-12-21 | A kind of drawing method for aluminium sheet product |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107159770A true CN107159770A (en) | 2017-09-15 |
Family
ID=59849507
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611192189.4A Pending CN107159770A (en) | 2016-12-21 | 2016-12-21 | A kind of drawing method for aluminium sheet product |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107159770A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109513796A (en) * | 2019-01-22 | 2019-03-26 | 山东小鸭精工机械有限公司 | Escutcheon drawing work of shifting gears and mold |
| CN114632852A (en) * | 2022-02-17 | 2022-06-17 | 四川国腾设备制造有限公司 | Drawing forming method of duralumin alloy aircraft engine hood |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001293524A (en) * | 2000-04-11 | 2001-10-23 | Kojima Press Co Ltd | Die and forming method for press forming outer peripheral bead |
| JP2006088185A (en) * | 2004-09-22 | 2006-04-06 | Toshiba Corp | Press die, and its manufacturing method |
| JP2006122959A (en) * | 2004-10-29 | 2006-05-18 | Yamazaki Mazak Corp | Method for preparing die for press brake and die |
| CN101913316A (en) * | 2010-07-30 | 2010-12-15 | 奇瑞汽车股份有限公司 | Door panel part and secondary drawing and punching method of door panel |
| CN203044665U (en) * | 2012-12-27 | 2013-07-10 | 浙江黄岩冲模有限公司 | Drawing forming mould for super-high strength steel plate car door anti-collision beam |
| CN203508710U (en) * | 2013-08-09 | 2014-04-02 | 天津志诚模具有限公司 | Time delay mechanism special for secondary drawing die |
-
2016
- 2016-12-21 CN CN201611192189.4A patent/CN107159770A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001293524A (en) * | 2000-04-11 | 2001-10-23 | Kojima Press Co Ltd | Die and forming method for press forming outer peripheral bead |
| JP2006088185A (en) * | 2004-09-22 | 2006-04-06 | Toshiba Corp | Press die, and its manufacturing method |
| JP2006122959A (en) * | 2004-10-29 | 2006-05-18 | Yamazaki Mazak Corp | Method for preparing die for press brake and die |
| CN101913316A (en) * | 2010-07-30 | 2010-12-15 | 奇瑞汽车股份有限公司 | Door panel part and secondary drawing and punching method of door panel |
| CN203044665U (en) * | 2012-12-27 | 2013-07-10 | 浙江黄岩冲模有限公司 | Drawing forming mould for super-high strength steel plate car door anti-collision beam |
| CN203508710U (en) * | 2013-08-09 | 2014-04-02 | 天津志诚模具有限公司 | Time delay mechanism special for secondary drawing die |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109513796A (en) * | 2019-01-22 | 2019-03-26 | 山东小鸭精工机械有限公司 | Escutcheon drawing work of shifting gears and mold |
| CN114632852A (en) * | 2022-02-17 | 2022-06-17 | 四川国腾设备制造有限公司 | Drawing forming method of duralumin alloy aircraft engine hood |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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Application publication date: 20170915 |