CN107876616B - A kind of drawing die and its drawing work of high-tension metal plate material - Google Patents
A kind of drawing die and its drawing work of high-tension metal plate material Download PDFInfo
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- CN107876616B CN107876616B CN201711460998.3A CN201711460998A CN107876616B CN 107876616 B CN107876616 B CN 107876616B CN 201711460998 A CN201711460998 A CN 201711460998A CN 107876616 B CN107876616 B CN 107876616B
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- pin
- pressure plate
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- plate
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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
-
- 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
- B21D37/12—Particular guiding equipment, e.g. pliers; Special arrangements for interconnection or cooperation of dies
-
- 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
- B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
The invention belongs to the cold punching technology fields of sheet metal, it is related to the drawing die and its drawing work of a kind of high-tension metal plate material, drawing die is the common mode mold that can produce left molded part and right molded part simultaneously, a left side is provided on the bottom surface of upper mold, right punch-pin, it is left, outer pressure plate is provided on the outside of right punch-pin, it is left, interior pressure plate is provided between right punch-pin, it is provided on the upper surface of lower die and the left side, the left side that right punch-pin matches, right cavity plate, it is left, the structure of right cavity plate is equal are as follows: middle part is provided with middle pressure plate, side pressure flitch is provided on the outside of middle pressure plate, middle pressure plate, outer pressure plate and interior pressure plate are moved up and down by nitrogen cylinder driving；Drawing work is CAE analysis, first and second drawing and die sinking: advantage is: effectively preventing ensure that product forming quality by product corrugation, stack and the cracking of drawing；Suitable for the product with high-tension metal plate material drawing deep trouth, big amount of tension.
Description
Technical field
The invention belongs to the cold punching technology field of sheet metal, be related to a kind of high-tension metal plate material drawing die and
Its drawing work.
Background technique
Hyundai Motor manufacture it is also desirable to have reliable safety other than requiring to reduce fuel consumption and exhaust emissions
Property.Collision prevention girders are installed in the product inside arrangements for automotive doors, to reinforce the ability of body of a motor car side anticollision, work as automobile side
When by brute force attack, collision prevention girders are by deformation, to absorb the huge energy hit and generated, to reduce what occupant may be subject to
Injury.Therefore, present automobile industry provides, must install door anti-collision joist on automobile.
The Japanese automobile of early stage, mostly uses tubular type collision prevention girders, and Europe system automobile then biases toward the plate of single slot or dual-slot structure
Formula collision prevention girders, anticollision ability are higher.Present collision prevention girders mostly use deeper dual-slot structure, and material uses ultrahigh strength board
Production, intensity is higher, and mitigation amplitude is bigger, both improves vehicle safety, also reduces automobile fuel consumption and exhaust gas discharge, can
To say that high-strength plate is the ideal material for manufacturing collision prevention girders, application amount will be increased substantially from now on.
The tensile strength of ultrahigh strength board is all in 700MPa or more, up to 1000~1400MPa, so hard material
Material, there is an urgent need to find a kind of new manufacturing process for it.
Summary of the invention
The object of the present invention is to provide the drawing dies and its drawing work of a kind of high-tension metal plate material.
The object of the present invention is achieved like this:
A kind of drawing die of high-tension metal plate material, including upper die and lower die, punch-pin, cavity plate, the mold is can be same
When produce the common mode mold of left molded part and right molded part, be provided with left punch-pin and right punch-pin, left punch-pin on the bottom surface of upper mold
With outer pressure plate is provided on the outside of right punch-pin, interior pressure plate, the upper surface of lower die are provided between left punch-pin and right punch-pin
On be provided with the left cavity plate and right cavity plate matched with the left punch-pin and right punch-pin, the structure of left cavity plate and right cavity plate is equal
Are as follows: middle part is provided with middle pressure plate, and side pressure flitch is provided on the outside of middle pressure plate, is respectively provided with below each middle pressure plate
There is the nitrogen cylinder that pressure plate moves up and down in driving, each it is outer to be respectively arranged with driving for the top of outer pressure plate and interior pressure plate
The nitrogen cylinder that pressure plate and interior pressure plate move up and down.
The lower inside of above-mentioned outer pressure plate is provided with binder insert, and the two sides of interior pressure plate are provided with binder edge
Block.
At least provided with two downward protrusions on above-mentioned left punch-pin and right punch-pin, it is all provided on left cavity plate and right cavity plate
It is equipped with the groove with the male cooperation on left punch-pin and right punch-pin synthesized by middle pressure plate with lateral pressing board group, two of middle part
Protrusion between the lowest part of groove and two grooves is arranged in middle pressure plate.
The outer of above-mentioned left punch-pin and right punch-pin is arranged at except outermost bead.
The tensile strength of above-mentioned high-tension metal plate material is 700MPa or more.
The tensile strength of above-mentioned high-tension metal plate material is 1000~1400MPa.
A kind of drawing work of the drawing die of above-mentioned high-tension metal plate material, includes the following steps:
(1) by CAE analysis, the serious cracking region in once-forming product is confirmed, as first time drawing region；
(2) first time drawing: under die opening state, first pressure plate moves up a row in the nitrogen cylinder drive of control downside
Then one drawing process part processing is placed on left cavity plate and right cavity plate and is positioned, upper mold downlink by journey, outer pressure plate and interior pressure plate and its
Binder insert can contact in advance a drawing process part processing, the middle pressure plate cooperation of punch-pin and cavity plate under the action of nitrogen cylinder than punch-pin
Binder drawing goes out the big convex ribs of upward convex hat；
(3) second of drawing: upper mold continues traveling downwardly, punch-pin pressure plate pressure in, until the middle binder of punch-pin and cavity plate
Plate is closed completely with side pressure flitch, and it is downward that the cavity plate and punch-pin cooperation secondary drawing of middle pressure plate and side pressure flitch composition go out middle part
Two big convex ribs and relevant shape；
(4) be opened: after pressure maintaining 1-20 minutes, upper mold is lifted, and the molding product of secondary drawing is gradually jacked up by middle pressure plate,
Take out the molding product of secondary drawing.
The present invention is prominent and beneficial compared with prior art to be had the technical effect that
1, dual-trench type face of the invention forms (secondary drawing) technology at times, effectively prevents being risen by the product of drawing
Wrinkle, stack and cracking, ensure that product forming quality；
2, the control technology of punch-pin of the present invention and the mutually matched stretch forming amount of middle pressure plate, effectively prevents by drawing
Product is locally thinning, degradation, guarantee that sufficient intensity is had by the product of drawing；
3, ingehious design of the present invention divides mode structure, overcomes outer pressure plate and is lifted due to asynchronous, is caused by the production of drawing
The drawbacks of product deform.
4, of the invention to be suitable for the high-tension metal plate material drawing deep trouth for being 700MPa~1400MPa with tensile strength, draw greatly
The product for the amount of stretching.
Detailed description of the invention
Fig. 1 is the structure diagram of the deep double flute collision prevention girders molded with the present invention and high-tension plates；
Fig. 2 is the process part processing cross-section diagram of double flute collision prevention girders first time drawing；
Fig. 3 is the process part processing cross-section diagram of second of drawing of double flute collision prevention girders；
Mold clamping state diagram when Fig. 4 is second of drawing and moulding product of the invention；
Fig. 5, which is that outer pressure plate of the invention is asynchronous, lifts the schematic diagram for causing the deformation of products at drawing.
Specific embodiment
With specific embodiment, the invention will be further described with reference to the accompanying drawing, referring to Fig. 1-Fig. 5:
A kind of drawing die of high-tension metal plate material, including upper mold 14, lower die 17, punch-pin 11, cavity plate 25, the mould
Tool is the common mode mold that can produce left molded part and right molded part simultaneously, is provided with left punch-pin 11 and the right side on the bottom surface of upper mold 14
The outside of punch-pin 11, left punch-pin 11 and right punch-pin 11 is provided with outer pressure plate 15, is arranged between left punch-pin 11 and right punch-pin 11
There is interior pressure plate 22, the left cavity plate 25 matched with the left punch-pin 11 and right punch-pin 11 is provided on the upper surface of lower die 17
And right cavity plate 25, the structure of left cavity plate 25 and right cavity plate 25 are equal are as follows: middle part is provided with middle pressure plate 19, the outside of middle pressure plate 19
It is provided with side pressure flitch 18, the lower section of each middle pressure plate 19 is provided with the nitrogen cylinder that pressure plate 19 moves up and down in driving
20, each the top of outer pressure plate 15 and interior pressure plate 22, which is respectively arranged with, drives outer pressure plate 15 and about 22 interior pressure plate
Mobile nitrogen cylinder 10.
The lower inside of above-mentioned outer pressure plate 15 is provided with binder insert 13, and the two sides of interior pressure plate 22 are provided with
Binder insert 21.
At least provided with two downward protrusions, left cavity plate 25 and right cavity plate on above-mentioned left punch-pin 11 and right punch-pin 11
Be provided on 25 be combined by middle pressure plate 19 with side pressure flitch 18 with the male cooperation on left punch-pin 11 and right punch-pin 11
Groove, between the lowest part and two grooves of two grooves at middle part protrusion be arranged in middle pressure plate 19.
The outer 12 of above-mentioned left punch-pin 11 and right punch-pin 11 is arranged at except outermost bead 16, is two at this
After secondary drawing, except Material shrinkage position, this punch-pin increases, the structure that outer pressure plate reduces, both can be to material reality
Press side, increases radial tensile stress, decreasing rebound, can also not synchronize to lift to avoid pressure plate outside when die sinking and product is caused to become
The failure of shape.
The tensile strength of above-mentioned high-tension metal plate material is 700MPa or more.
The tensile strength of above-mentioned high-tension metal plate material is 1000~1400MPa.
A kind of drawing work of the drawing die of above-mentioned high-tension metal plate material, includes the following steps:
(1) by CAE analysis, the serious cracking region in once-forming product is confirmed, as first time drawing region；
(2) first time drawing: under die opening state, first pressure plate 19 moves up one in the drive of nitrogen cylinder 20 of control downside
Stroke makes it higher than 25 type face 35mm of cavity plate, and intensity is then drawn process part processing (sheet metal) for the one of 700MPa~1400MPa
It is placed on left cavity plate 25 and right cavity plate 25 and positions, upper mold downlink, outer pressure plate 15 and interior pressure plate 22 and its binder insert 13,
21 under the action of nitrogen cylinder 10, and a drawing process part processing, the middle pressure plate 19 of punch-pin 11 and cavity plate 25 can be contacted in advance than punch-pin 11
Cooperation binder drawing goes out the big convex ribs 23 of a upward convex hat；
(3) second of drawing: upper mold continues traveling downwardly, and punch-pin depresses press plate, until the middle binder of punch-pin and cavity plate
Plate 19 is closed completely with side pressure flitch 18, and the cavity plate 25 and punch-pin 11 that middle pressure plate 19 is constituted with side pressure flitch 18 cooperate secondary drawing
Extend two downward big convex ribs 24 of middle part and relevant shape (such as the small convex rib 26 in outside)；
(4) be opened: after pressure maintaining 1-20 minutes, upper mold is lifted, and the molding product of secondary drawing is gradually jacked up by middle pressure plate,
Take out the molding product of secondary drawing.
Fig. 1 is the double flute collision prevention girders that the present invention is made using a kind of sheet metal of high-tension, which has following features:
1, product overall length 650mm, wide 105mm, the high 32mm of slot.
2, product section is deep dual-slot structure, and open at one end, the other end is silent, and end is stretched out with flat condition, groove width
25mm, the high 20~32mm of slot, two groove centers are away from for 60mm.
3, product material is CR340LA low-alloy high-strength plate, expects thickness 1.2mm.
4, product belongs to double high products, and forming is extremely difficult, and once-forming centre lacks material and can not supplement, and a drawing may
Cracking, closing endfeed is excessive, can seriously wrinkle or even stack, due to the inhomogeneities of forming, springs back very big, amendment is difficult.
CAE analysis is as a result, determine that this part must take draw forming twice.
Fig. 2 is the process part processing cross-section diagram of the first time drawing of product, and drawing flattens the outside stile of double flute, pulls into band
Along flute profile 1, the every sapwood stream of drawing at this time enters only by 2 fillets 2, and feed supplement will not be difficult, will not more generate rupture.It draws for the first time
Prolong that mode structure is simple, it is identical with the upside-down mounting drawing die that generallys use, introduction is not repeated herein.Mold wants emphasis to solve end
Corrugation and stack problem, corrugation be flowed into as material it is excessive caused by, solution must at one end head be arranged bead into
Row adjustment, bead will increase its radial tensile stress, reduce end charging, to eliminate corrugation and stack phenomenon.
Fig. 3 is the process part processing cross-section diagram of second of drawing of product, this process stretches flat 3 outside stile of double flute one
4 formings are in place.
Fig. 4 is mold clamping state diagram, and punch-pin and cavity plate are closed completely, and double flute (two big convex ribs) is extruded completely.
Fig. 5 is that outer pressure plate is asynchronous to lift the schematic diagram for causing product to deform because of failure.At this point, if secondary drawing
Prolong molding product edge to be located within upper die parting line, then outer pressure plate and insert are recessed there are no being detached under nitrogen cylinder effect
Mould, top on the middle part of the molding product of secondary drawing, outside pushes can cause the molding deformation of products of secondary drawing.
So we are in design, it is necessary to upper die parting line is changed into except the molding products reclaiming edge of secondary drawing, this
Even if when outer pressure plate do not lift, the molding product of secondary drawing will not be influenced and lifted, less will cause secondary drawing at
The deformation of products of type, this is distinctive feature of the invention, solves the problems, such as the big of deformation.
Above-described embodiment is only presently preferred embodiments of the present invention, is not limited the scope of the invention according to this, therefore: it is all according to
The equivalence changes that structure of the invention, shape, principle are done, should all be covered by within protection scope of the present invention.
Claims (5)
1. a kind of drawing die of high-tension metal plate material, including upper die and lower die, punch-pin, cavity plate, it is characterised in that: described
Mold is the common mode mold that can produce left molded part and right molded part simultaneously, and left punch-pin is provided on the bottom surface of upper mold and the right side is convex
It is provided with outer pressure plate on the outside of mould, left punch-pin and right punch-pin, interior pressure plate, lower die are provided between left punch-pin and right punch-pin
Upper surface on be provided with the left cavity plate and right cavity plate matched with the left punch-pin and right punch-pin, left cavity plate and right cavity plate
Structure is equal are as follows: middle part is provided with middle pressure plate, and side pressure flitch is provided on the outside of middle pressure plate, the lower section of each middle pressure plate
It is provided with the nitrogen cylinder that pressure plate moves up and down in driving, each the top of outer pressure plate and interior pressure plate is respectively arranged with
The nitrogen cylinder for driving outer pressure plate and interior pressure plate to move up and down；The lower inside of the outer pressure plate is provided with binder edge
Block；The outer of the left punch-pin and right punch-pin is arranged at except outermost bead；The left punch-pin and right punch-pin
On at least provided with two downward protrusions, be provided on left cavity plate and right cavity plate and closed by middle pressure plate and lateral pressing board group
At the groove with the male cooperation on left punch-pin and right punch-pin, between the lowest part and two grooves of two grooves at middle part
Protrusion is arranged in middle pressure plate.
2. a kind of drawing die of high-tension metal plate material according to claim 1, it is characterised in that: the two of interior pressure plate
Side is provided with binder insert.
3. a kind of drawing die of high-tension metal plate material according to claim 1, it is characterised in that: the high-tension
The tensile strength of sheet metal is 700MPa or more.
4. a kind of drawing die of high-tension metal plate material according to claim 1, it is characterised in that: the high-tension
The tensile strength of sheet metal is 1000~1400MPa.
5. a kind of drawing work of the drawing die of high-tension metal plate material according to any one of claims 1-4,
Be characterized in that: drawing work includes the following steps:
(1) by CAE analysis, the serious cracking region in once-forming product is confirmed, as first time drawing region；
(2) first time drawing: under die opening state, first pressure plate moves up a stroke in the nitrogen cylinder drive of control downside, so
A drawing process part processing is placed on left cavity plate and right cavity plate and is positioned, upper mold downlink afterwards, outer pressure plate and interior pressure plate and its binder
Insert can contact in advance a drawing process part processing, the middle pressure plate cooperation binder of punch-pin and cavity plate under the action of nitrogen cylinder than punch-pin
Drawing goes out the big convex ribs of upward convex hat；
(3) second of drawing: upper mold continues traveling downwardly, punch-pin pressure plate pressure in, until the middle pressure plate of punch-pin and cavity plate with
Side pressure flitch is closed completely, and the cavity plate and punch-pin cooperation secondary drawing of middle pressure plate and side pressure flitch composition go out two of middle part downwards
The big convex ribs of item and relevant shape；
(4) be opened: after pressure maintaining 1-20 minutes, upper mold is lifted, and the molding product of secondary drawing is gradually jacked up by middle pressure plate, is taken out
The molding product of secondary drawing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711460998.3A CN107876616B (en) | 2017-12-28 | 2017-12-28 | A kind of drawing die and its drawing work of high-tension metal plate material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711460998.3A CN107876616B (en) | 2017-12-28 | 2017-12-28 | A kind of drawing die and its drawing work of high-tension metal plate material |
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| Publication Number | Publication Date |
|---|---|
| CN107876616A CN107876616A (en) | 2018-04-06 |
| CN107876616B true CN107876616B (en) | 2019-08-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711460998.3A Active CN107876616B (en) | 2017-12-28 | 2017-12-28 | A kind of drawing die and its drawing work of high-tension metal plate material |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111957800A (en) * | 2020-07-03 | 2020-11-20 | 中国第一汽车股份有限公司 | Die and method for controlling drawing formability of rear cover outer plate |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1912445A1 (en) * | 1969-03-12 | 1970-09-24 | Erhardt Reitter | Deep-drawn hollow articles made in a mould - ing press |
| KR100858184B1 (en) * | 2006-11-21 | 2008-09-10 | 현대자동차주식회사 | Plastic working apparatus for deep drawing |
| CN201889361U (en) * | 2010-11-26 | 2011-07-06 | 浙江黄岩冲模厂 | Forward-drawing/reverse-drawing one-step deep-drawing die for large plastic deformation of thick plate |
| CN203044666U (en) * | 2012-12-27 | 2013-07-10 | 浙江黄岩冲模有限公司 | Combined type forming die of super-strength steel plate car door anti-collision beam |
| 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 |
| CN107159800A (en) * | 2017-07-19 | 2017-09-15 | 浙江黄岩冲模有限公司 | Beam-like part diel with anti-rebound drawing bank |
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2017
- 2017-12-28 CN CN201711460998.3A patent/CN107876616B/en active Active
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| CN107876616A (en) | 2018-04-06 |
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Denomination of invention: A drawing die for high tension metal plate and its drawing process Effective date of registration: 20220211 Granted publication date: 20190806 Pledgee: Zhejiang Taizhou Huangyan Rural Commercial Bank Co.,Ltd. Pledgor: ZHEJIANG HUANGYAN DIE Co.,Ltd. Registration number: Y2022330000208 |
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