CN107876616A - 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
- Publication number
- CN107876616A CN107876616A CN201711460998.3A CN201711460998A CN107876616A CN 107876616 A CN107876616 A CN 107876616A CN 201711460998 A CN201711460998 A CN 201711460998A CN 107876616 A CN107876616 A CN 107876616A
- Authority
- CN
- China
- Prior art keywords
- holding pad
- pin
- punch
- cavity plate
- 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.)
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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
- 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
Abstract
The invention belongs to the cold punching technology field of sheet metal, it is related to a kind of drawing die and its drawing work of high-tension metal plate material, drawing die is the common mode mould that can produce left molding part and right molding part simultaneously, left and right punch-pin is provided with the bottom surface of upper mould, outer holding pad is provided with the outside of left and right punch-pin, interior holding pad is provided between left and right punch-pin, the left and right cavity plate being engaged with described left and right punch-pin is provided with the upper surface of lower mould, the structure of left and right cavity plate is：Middle part is provided with middle holding pad, and side pressure flitch is provided with the outside of middle holding pad, and middle holding pad, outer holding pad and interior holding pad move up and down by nitrogen cylinder driving；Drawing work is CAE analysis, first and second drawing and die sinking：Advantage is：It effectively prevent by product corrugation, stack and the cracking of drawing, ensure that product forming quality；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 technology
Hyundai Motor manufacture it is also desirable to have reliable safety in addition to requiring to reduce fuel consumption and exhaust emissions
Property.Collision prevention girders are installed in the product inside arrangements for automotive doors, to strengthen the ability of body of a motor car side anticollision, work as automobile side
During by brute force attack, collision prevention girders by deformation, come absorb hit caused by huge energy, may be subject to so as to reducing occupant
Injury.Therefore, present automobile industry is provided, door anti-collision joist must be installed on automobile.
The Japanese automobile of early stage, the plate of single groove or dual-slot structure is then mostly biased toward using tubular type collision prevention girders, Europe system automobile
Formula collision prevention girders, its anticollision ability are higher.Present collision prevention girders use deeper dual-slot structure more, and material uses ultrahigh strength board
Make, its intensity is higher, and mitigation amplitude is bigger, both improves vehicle safety, also reduces automobile fuel consumption and waste gas discharge, can
To say that high-strength plate is the ideal material of manufacture collision prevention girders, application amount will increase substantially from now on.
The tensile strength of ultrahigh strength board is all in more than 700MPa, up to 1000~1400MPa, so hard material
How material, shapeCold stamping can be withThere is an urgent need to find a kind of new manufacturing process for it.
The content of the invention
It is an object of the invention to provide a kind of drawing die and its drawing work 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, described mould is can be same
When produce the common mode mould of left molding part and right molding part, be provided with left punch-pin and right punch-pin, left punch-pin on the bottom surface of upper mould
With outer holding pad is provided with the outside of right punch-pin, interior holding pad, the upper surface of lower mould are provided between left punch-pin and right punch-pin
On be provided with the left cavity plate being engaged with described left punch-pin and right punch-pin and right cavity plate, the structure of left cavity plate and right cavity plate is equal
For：Middle part is provided with middle holding pad, and side pressure flitch is provided with the outside of middle holding pad, is respectively provided with below each middle holding pad
There is the nitrogen cylinder that holding pad moves up and down in driving, the outer binder of driving is provided with above each outer holding pad and interior holding pad
The nitrogen cylinder that plate and middle holding pad move up and down.
The lower inside of above-mentioned outer holding pad is provided with binder insert, and the both sides of interior holding pad are provided with binder edge
Block.
At least provided with two downward projections on above-mentioned left punch-pin and right punch-pin, on left cavity plate and right cavity plate extremely
Few groove with the male cooperation on left punch-pin and right punch-pin being combined into by middle holding pad and side pressure flitch, two of middle part are recessed
Projection between the lowest part of groove and two grooves is arranged on middle holding pad.
Above-mentioned left punch-pin and the outer of right punch-pin are arranged at outside outermost bead.
The tensile strength of above-mentioned high-tension metal plate material is more than 700MPa.
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, comprises the following steps：
(1) by CAE analysis, the serious cracking region in once-forming product is confirmed, as a drawing region；
(2) first time drawing：Under die opening state, holding pad moves up a row during first the nitrogen cylinder of control downside drives
Journey, then a drawing process part processing is placed on left cavity plate and right cavity plate and positioned, upper mould is descending, outer holding pad and interior holding pad and its
Binder insert can contact a drawing process part processing, the middle holding pad cooperation of punch-pin and cavity plate in advance in the presence of nitrogen cylinder than punch-pin
Binder drawing goes out a big convex tendon of convex hat；
(3) second of drawing：Upper mould is continued traveling downwardly, and punch-pin holding pad in is depressed, until the middle binder of punch-pin and cavity plate
Plate closes completely with side pressure flitch, and middle holding pad coordinates secondary drawing to go out middle part downwards with the cavity plate that side pressure flitch is formed and punch-pin
Two big convex tendon and correlation shape；
(4) mold：After pressurize 1-20 minutes, upper mould lifts, and the product of secondary drawing shaping is gradually jacked up by middle holding pad,
Take out the product of secondary drawing shaping.
The present invention is prominent and beneficial compared with prior art to be had the technical effect that：
1st, dual-trench type face of the invention is molded (secondary drawing) technology at times, effectively prevent and is risen by the product of drawing
Wrinkle, stack and cracking, ensure that product forming quality；
2nd, the control technology for the stretch forming amount that punch-pin of the present invention cooperates with middle holding pad, effectively prevent by drawing
Product is locally thinning, degradation, ensure that sufficient intensity is had by the product of drawing；
3rd, ingehious design of the present invention divides mode structure, overcomes outer holding pad and is lifted due to asynchronous, is caused by the production of drawing
The drawbacks of product deform.
4th, it is of the invention to be suitable to the high-tension metal plate material drawing deep trouth for being 700MPa~1400MPa with tensile strength, big drawing
The product for the amount of stretching.
Brief description of the drawings
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 sectional drawing of double flute collision prevention girders first time drawing；
Fig. 3 is the process part processing sectional drawing of second of drawing of double flute collision prevention girders；
Mould matched moulds state diagram when Fig. 4 is second of drawing and moulding product of the invention；
Fig. 5, which is that the outer holding pad of the present invention is asynchronous, lifts the schematic diagram for causing the deformation of products at drawing.
Embodiment
With specific embodiment, the invention will be further described below in conjunction with the accompanying drawings, referring to Fig. 1-Fig. 5：
A kind of drawing die of high-tension metal plate material, including upper mould 14, lower mould 17, punch-pin 11, cavity plate 25, described mould
Have for the common mode mould of left molding part and right molding part can be produced simultaneously, left punch-pin 11 and the right side are provided with the bottom surface of upper mould 14
Punch-pin 11, the outside of left punch-pin 11 and right punch-pin 11 are provided with outer holding pad 15, set between left punch-pin 11 and right punch-pin 11
There is interior holding pad 22, the left cavity plate 25 being engaged with described left punch-pin 11 and right punch-pin 11 is provided with the upper surface of lower mould 17
And right cavity plate 25, the structure of left cavity plate 25 and right cavity plate 25 are：Middle part is provided with middle holding pad 19, the outside of middle holding pad 19
Side pressure flitch 18 is provided with, the lower section of each middle holding pad 19 is provided with the nitrogen cylinder that holding pad 19 moves up and down in driving
20, the top of each outer holding pad 15 and interior holding pad 22 is provided with the outer holding pad 15 of driving and middle holding pad 19 moves up and down
Nitrogen cylinder 10.
The lower inside of above-mentioned outer holding pad 15 is provided with binder insert 13, and the both sides of interior holding pad 22 are provided with
Binder insert 21.
At least provided with two downward projections, left cavity plate 25 and right cavity plate on above-mentioned left punch-pin 11 and right punch-pin 11
At least be combined on 25 by middle holding pad 19 and side pressure flitch 18 with the male cooperation on left punch-pin 11 and right punch-pin 11
Groove, the projection between the lowest part and two grooves of two grooves at middle part are arranged on middle holding pad 19.
Above-mentioned left punch-pin 11 and the outer 12 of right punch-pin 11 are arranged at outside outermost bead 16, are two at this
After secondary drawing terminates, outside Material shrinkage position, this punch-pin increase, the structure that outer holding pad reduces both can be real to material
Press side, increases radial direction tension, decreasing rebound, outer holding pad, which does not lift synchronously, when can also avoid molding causes product to become
The failure of shape.
The tensile strength of above-mentioned high-tension metal plate material is more than 700MPa.
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, comprises the following steps：
(1) by CAE analysis, the serious cracking region in once-forming product is confirmed, as a drawing region；
(2) first time drawing：Under die opening state, holding pad 19 moves up one during first the nitrogen cylinder 20 of control downside drives
Stroke, the type face 35mm of cavity plate 25 is made it higher than, intensity is then drawn into 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 mould is descending, outer holding pad 15 and interior holding pad 22 and its binder insert 13,
21 in the presence of nitrogen cylinder 10, can contact a drawing process part processing, the middle holding pad 19 of punch-pin 11 and cavity plate 25 in advance than punch-pin 11
Binder drawing is coordinated to go out the big convex tendon 23 of a convex hat；
(3) second of drawing：Upper mould continues traveling downwardly, and punch-pin depresses lower holding pad, until the middle binder of punch-pin and cavity plate
Plate 19 closes completely with side pressure flitch 18, and middle holding pad 19 coordinates secondary drawing with the cavity plate 25 that side pressure flitch 18 is formed and punch-pin 11
Extend the shape (such as the small convex rib 26 in outside) of the downward two big convex tendon 24 in middle part and correlation；
(4) mold：After pressurize 1-20 minutes, upper mould lifts, and the product of secondary drawing shaping is gradually jacked up by middle holding pad,
Take out the product of secondary drawing shaping.
Fig. 1 is the double flute collision prevention girders that the present invention is made using a kind of sheet metal of high-tension, and the product has following features：
1st, product overall length 650mm, wide 105mm, the high 32mm of groove.
2nd, product section is deep dual-slot structure, one end open, and the other end is remained silent, and termination is stretched out with flat condition, groove width
25mm, the high 20~32mm of groove, two groove centers are away from for 60mm.
3rd, product material is CR340LA low-alloy high-strength plates, expects thick 1.2mm.
4th, product belongs to double high products, and shaping is extremely difficult, and once-forming centre lacks material and can not supplemented, and a drawing may
Cracking, closing endfeed is excessive, can seriously wrinkle, or even stack, and due to the inhomogeneities of shaping, resilience is very big, and amendment is difficult.
CAE analysis result, determine that this part must take draw forming twice.
Fig. 2 is the process part processing sectional drawing of the first time drawing of product, and drawing flattens the outside stile of double flute, pulls into band
Along flute profile 1, now drawing enters per sapwood stream only passes through 2 fillets 2, and feed supplement will not be difficult, will not more produce rupture.Draw first
Prolong that mode structure is simple, duplicated with the upside-down mounting drawing die of generally use, introduction is not repeated herein.Mould wants emphasis to solve termination
Corrugation and stack problem, corrugation are due to caused by material flows into excessively, and solution must set bead to enter by head at one end
Row adjustment, bead can increase its radial direction tension, reduce termination charging, so as to eliminate corrugation and stack phenomenon.
Fig. 3 is the process part processing sectional drawing of second of drawing of product, and this process stretches the flat outside stile of double flute 3 one
4 shapings in place, remaining deburring and punching, will be completed in OP30 and OP40.
Fig. 4 is mould matched moulds state diagram, and punch-pin and cavity plate close completely, and double flute (two big convex tendons) is extruded completely.
Fig. 5 is that outer holding pad is asynchronous to lift the schematic diagram for causing product to deform because failure.Now, if secondary drawing
The product edge for prolonging shaping is located within upper die parting line, then outer holding pad and insert are under nitrogen cylinder effect, also without departing from recessed
Mould, secondary drawing shaping product middle part on top, outside push can cause secondary drawing be molded deformation of products.
So we are in design, it is necessary to upper die parting line is changed into outside the products reclaiming edge of secondary drawing shaping, this
Even if when outer holding pad do not lift, do not interfere with yet secondary drawing shaping product lift, will not more cause secondary drawing into
The deformation of products of type, this is the distinctive feature of the present invention, slight arrangement, solves the big problem 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, shape, the principle of the present invention is done, all should be covered by within protection scope of the present invention.
Claims (7)
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
Mould is the common mode mould that can produce left molding part and right molding part simultaneously, and left punch-pin is provided with the bottom surface of upper mould and the right side is convex
Outer holding pad is provided with the outside of mould, left punch-pin and right punch-pin, interior holding pad, lower mould are provided between left punch-pin and right punch-pin
Upper surface on be provided with the left cavity plate being engaged with described left punch-pin and right punch-pin and right cavity plate, left cavity plate and right cavity plate
Structure is：Middle part is provided with middle holding pad, and side pressure flitch is provided with the outside of middle holding pad, the lower section of each middle holding pad
The nitrogen cylinder that holding pad moves up and down in driving is provided with, driving is provided with above each outer holding pad and interior holding pad
The nitrogen cylinder that outer holding pad and middle holding pad move up and down.
A kind of 2. drawing die of high-tension metal plate material according to claim 1, it is characterised in that：Described outer binder
The lower inside of plate is provided with binder insert, and the both sides of interior holding pad are provided with binder insert.
A kind of 3. drawing die of high-tension metal plate material according to claim 1, it is characterised in that：Described left punch-pin
With on right punch-pin at least provided with two downward projections, at least by middle holding pad and lateral pressing on left cavity plate and right cavity plate
The groove with the male cooperation on left punch-pin and right punch-pin that plate is combined into, the lowest part and two grooves of two grooves at middle part
Between projection be arranged on middle holding pad.
A kind of 4. drawing die of high-tension metal plate material according to claim 1, it is characterised in that：Described left punch-pin
It is arranged at the outer of right punch-pin outside outermost bead.
A kind of 5. drawing die of high-tension metal plate material according to claim 1, it is characterised in that：Described high-tension
The tensile strength of sheet metal is more than 700MPa.
A kind of 6. drawing die of high-tension metal plate material according to claim 1, it is characterised in that：Described high-tension
The tensile strength of sheet metal is 1000~1400MPa.
7. a kind of drawing work of the drawing die of high-tension metal plate material according to claim 1-4 any one, its
It is characterised by：Comprise the following steps：
(1) by CAE analysis, the serious cracking region in once-forming product is confirmed, as a drawing region；
(2) first time drawing：Under die opening state, holding pad moves up a stroke during first the nitrogen cylinder of control downside drives, so
A drawing process part processing is placed on left cavity plate and right cavity plate and positioned afterwards, upper mould is descending, outer holding pad and interior holding pad and its binder
Insert can contact the middle holding pad cooperation binder of a drawing process part processing, punch-pin and cavity plate in advance in the presence of nitrogen cylinder than punch-pin
Drawing goes out a big convex tendon of convex hat；
(3) second of drawing：Upper mould is continued traveling downwardly, and punch-pin holding pad in is depressed, until the middle holding pad of punch-pin and cavity plate with
Side pressure flitch closes completely, and middle holding pad coordinates secondary drawing to go out downward two in middle part with the cavity plate that side pressure flitch is formed and punch-pin
The shape of the big convex tendon of bar and correlation；
(4) mold：After pressurize 1-20 minutes, upper mould lifts, and the product of secondary drawing shaping is gradually jacked up by middle holding pad, takes out
The product of secondary drawing shaping.
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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107876616A true CN107876616A (en) | 2018-04-06 |
| CN107876616B CN107876616B (en) | 2019-08-06 |
Family
ID=61770516
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 |
Country Status (1)
| Country | Link |
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| CN (1) | CN107876616B (en) |
Cited By (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 |
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| KR20080045817A (en) * | 2006-11-21 | 2008-05-26 | 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 |
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| 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
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|---|---|---|---|---|
| DE1912445A1 (en) * | 1969-03-12 | 1970-09-24 | Erhardt Reitter | Deep-drawn hollow articles made in a mould - ing press |
| KR20080045817A (en) * | 2006-11-21 | 2008-05-26 | 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 |
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Cited By (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 |
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| Publication number | Publication date |
|---|---|
| CN107876616B (en) | 2019-08-06 |
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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 |