CN101402119B - Deep draw mould without flange edge die plate - Google Patents
Deep draw mould without flange edge die plate Download PDFInfo
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- CN101402119B CN101402119B CN2008101219487A CN200810121948A CN101402119B CN 101402119 B CN101402119 B CN 101402119B CN 2008101219487 A CN2008101219487 A CN 2008101219487A CN 200810121948 A CN200810121948 A CN 200810121948A CN 101402119 B CN101402119 B CN 101402119B
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Abstract
The invention discloses a deep drawing die of a non-flanged edge concave die. The corner radius of a concave die in a drawing die is equal to the radial length from the edge to a die cavity of the concave die and transit along the circumference; the lower end of an upper die plate is provided with a convex die which is arranged on a convex die fixing plate and in a pressing-material ring hole; the convex die fixing plate is in threaded connection with the upper die plate; the upper die plate is provided with more than three through holes provided with steps, in which rejected material bolts are inserted; the rejected material bolts, which are extended out of the lower end surface of the upper die plate, are orderly arranged in a spring; the end parts of the rejected material bolts are in threaded connection with a pressing-material ring; the non-flanged edge concave die is arranged on the center part of the upper end surface of the lower die plate; the center part of the non-flanged edge concave die is provided with a concave die cushion; and a head part spring is pressed against the lower end surface of the concave die cushion. The die can improve the forming performance of sheet materials, compared with the conical surface concave die, the conical surface rigid clamping ring die and the drawing die of which the upper surface of the concave die is closely punched with technological blind holes, the die has the advantages of improving the deepest drawing depth of a drawing piece without cracking, replacing multiple drawing by one-time drawing, and reducing cost and energy consumption.
Description
Technical field
The present invention relates to the equipment that metal blank is shaped, especially relate to a kind of deep drawing mould that can't flange edge die
Background technology
Adopt to improve the process structure of steel die, avoid or effectively suppress wrinkling and break in the sheet material forming, improve the new technology research and development of sheet material forming limit capacity, be the hot subject in the domestic and international sheet-metal press working field always.
At present existing following improved steel die structure: 1. beat intensive technology small blind hole cupping tool on the die on the plane, utilize these technology small blind holes storage lubricating oil and when pull and stretch, reduce contact area with blank, thereby minimizing tension, suppressed to a certain extent to break in the sheet material forming, improved the sheet material forming limit capacity, but this process structure processing time consuming, the cost height is difficult to promote in actual production and comes.
2. conical surface die and conical surface rigid blank holder ring mould, the face that die is contacted with blank is processed into the process that the conical surface carries out pull and stretch with the face that blank holder contacts with blank, this method can improve the Limit Drawing height to a certain extent and drawing crack and wrinkling not take place, but just for plate thicker (or relative thickness is bigger), and pull and stretch just has certain effect when having big fillet radius drawing part, and use occasion is limited.
Summary of the invention
The object of the present invention is to provide a kind of deep drawing mould that can't flange edge die, can greatly improve the Limit Drawing height of drawing part and drawing crack does not take place, perhaps wrinkling process and the mould that is controlled within the qualified products requirement.
The technical scheme that the present invention solves its technical problem employing is:
The present invention includes mould assembly and lower mould assembly, wherein:
1) goes up mould assembly: comprise cope match-plate pattern, guide pin bushing, punch retainer material returned screw, spring, punch and holding pad; The punch of leaving pore is equipped with at center, cope match-plate pattern lower surface, punch is sleeved in punch retainer hole and the holding pad hole from top to bottom successively, and form with punch retainer hole and holding pad hole and to be slidingly matched, punch retainer and cope match-plate pattern adopt thread connection, have the through hole more than three on the cope match-plate pattern of punch outside and the punch retainer, material returned screw all is housed in each through hole, expose on the material returned screw of cope match-plate pattern lower surface and be sleeved on spring successively, in punch retainer and the holding pad hole, material returned screw end is threaded with holding pad, have the screwed hole more than three on the holding pad outside the material returned screw, plural guide pin bushing is equipped with in the cope match-plate pattern lower end of punch retainer and holding pad outside.
2) lower mould assembly: comprise lower bolster, guide pillar, die, die cushion block and head part spring; In the die at center, lower bolster upper surface the die cushion block is housed, the head part spring is equipped with in the lower surface of die cushion block, die cushion block and die inner chamber form and are slidingly matched, the head part spring withstands on the die cushion block large end face, die cushion block center line and punch central lines, die on lower bolster outside are equipped with plural guide pillar and are slidingly matched with the consistent also formation of guide pin bushing quantity on the cope match-plate pattern.
Described die, the appearance profile shape of die and appearance and size and drawing part expansion shape and consistent size.
Described die, when pull and stretch rule drawing part, the i.e. drawing part of the revolving body floor projection size of representing with a diameter parameters, the expansion profile and the consistent size of pull and stretch die profile and size and regular shape drawing part, the die profile radius in the cupping tool equal the die edge to the die cavity radical length and along all transition.
Described die, when the erose drawing part of pull and stretch floor projection, the i.e. drawing part of the floor projection shape that can not represent with a parameter, the expansion profile and the consistent size of pull and stretch die profile and size and erose drawing part, die profile radius in the cupping tool equals the die edge to the die cavity radical length, the die edge shape is irregular, the die edge is unequal to the die cavity radical length, so the die profile radius along week is inconsistent, but between each die profile radius in week, want rounding off.
The beneficial effect that the present invention has is:
This kind mould structure can greatly improve the forming property of plate, with beat intensive technology small blind hole cupping tool on the plane on the die and compare with conical surface rigid blank holder ring mould with conical surface die, this technology can improve the Limit Drawing height of drawing part biglyyer and not break, adopt such mould structure to substitute repeatedly pull and stretch by once drawing, greatly reduced die manufacturing cost and energy consumption.
Description of drawings
Fig. 1 can't flange edge die the deep drawing die structure dwg.
Fig. 2 conical surface die and conical surface rigid blank holder ring mould structure chart.
Play the cupping tool structure chart of intensive technology small blind hole on Fig. 3 a die on the plane.
Play intensive technology small blind hole die front view on Fig. 3 b plane.
Beat intensive technology small blind hole die vertical view on Fig. 3 c plane.
Fig. 4 can't flange edge die deep drawing mould pull and stretch postforming limiting figure.
Fig. 5 conical surface die and conical surface rigid blank holder ring mould pull and stretch postforming limiting figure.
Beat intensive technology small blind hole cupping tool pull and stretch postforming limiting figure on Fig. 6 die on the plane.
Fig. 7 can't flange edge die the deep drawing mould do not suppress preceding state diagram.
Fig. 8 can't flange edge die the compacting of deep drawing mould finish after state diagram.
Fig. 9 a cylindrical shape drawing part figure.
Fig. 9 b cylindrical shape drawing part expanded view.
Fig. 9 c cylindrical shape die figure.
Fig. 9 d box-like drawing part front view.
Fig. 9 e box-like drawing part vertical view.
Fig. 9 f box-like drawing part expanded view.
Fig. 9 g box-like die front view.
Fig. 9 h box-like die vertical view.
Among the figure: 1, cope match-plate pattern, 2, guide pin bushing, 3, punch retainer, 4, material returned screw, 5, spring, 6, punch, 7, holding pad, 8, lower bolster, 9, guide pillar, 10 dies, 11, the die cushion block, 12, the head part spring, 13, plate.
The specific embodiment
On the basis of existing mold design feature, proposed can't flange edge die the deep drawing mould.The die outer shape of this kind mould and size and drawing part launch profile and consistent size, and die profile radius equals the die edge to the die cavity radical length and along all transition.This mould structure has following characteristics: during (1) pull and stretch, the time of rigid blank holder circle effect blank peripheral edge portion is shorter, but because beginning just has been pressed on the arc surface, and arc surface radially reduces, so thickening, plate can not surpass the blank initial plane, when initial pressure-pad-force was got bigger numerical, the blank outer rim can not turned over and be stuck up; (2) after the blank holder effect is finished, the frictional resistance that blank produces owing to the effect that is not subjected to blank holder, thereby the increment that is used to overcome the radially tension of frictional resistance just do not needed, so radially tension reduces, the trend of breaking weakens during pull and stretch, and pull and stretch ratio or deformation extent are bigger; (3) plate is thick in owing to be subjected to die entrance to its compression, and the hoop pressure stress that is subjected to of cell cube is littler than the pressure that is subjected on the face-flange herein, plate is flowed through, and thickness is attenuate behind the die entrance, and the therefore same wrinkling situation of the straight wall cup shell of pull and stretch can be improved i.e. pull and stretch better quality.This mould can greatly improve the Limit Drawing height of drawing part and drawing crack not take place, and can replace repeatedly pull and stretch by once drawing, has reduced die cost and energy consumption.Fig. 1 be can't flange edge die the deep drawing die structure dwg, Fig. 2 is conical surface die and conical surface rigid blank holder ring mould structure chart, Fig. 3 a plays intensive technology small blind hole cupping tool structure chart on the plane on the die, Fig. 3 b plays intensive technology small blind hole die front view on the plane, Fig. 3 c beats intensive technology small blind hole die vertical view on the plane.It is consistent with body diameter to get blank diameter, i.e. diameter D=115mm, blank material 08Al, thickness t=1mm, protruding, die gap 1.15mm. elastic modulus E=206.8Gpa, Poisson's ratio v=0.3, strain hardening factor K=537Mpa, yield limit σ
s=110.3Mpa, press Fig. 1, Fig. 2, Fig. 3 a and Fig. 3 b and Fig. 3 c die structure size, obtain behind pull and stretch height H=21mm: deep drawing mould pull and stretch postforming limiting figure (Fig. 4) that can't flange edge die, conical surface die and conical surface rigid blank holder ring mould pull and stretch postforming limiting figure (Fig. 5), beat the cupping tool pull and stretch postforming limiting figure (Fig. 6) of intensive technology small blind hole on the die on the plane, comparison diagram 4 and Fig. 5 and Fig. 6 find out, after can't the deep drawing mould pull and stretch of flange edge die, drawing part does not break, and after beating intensive technology small blind hole cupping tool pull and stretch on conical surface die and conical surface rigid blank holder ring mould and the die on the plane, drawing part breaks or is in the critical condition of breaking.
Deep drawing mould such as Fig. 7, shown in Figure 8 that can't flange edge die the present invention includes mould assembly and lower mould assembly, wherein:
1) goes up mould assembly: comprise cope match-plate pattern 1, guide pin bushing 2, punch retainer 3 material returned screws 4, spring 5, punch 6 and holding pad 7; The punch 6 of leaving pore is equipped with at center, cope match-plate pattern 1 lower surface, punch 6 is sleeved in punch retainer 3 holes and holding pad 7 holes from top to bottom successively, and form with punch retainer 3 holes and holding pad 7 holes and to be slidingly matched, punch retainer 3 adopts thread connection with cope match-plate pattern 1, have the through hole more than three on the cope match-plate pattern 1 of punch 6 outsides and the punch retainer 3, material returned screw 4 all is housed in each through hole, expose on the material returned screw 4 of cope match-plate pattern 1 lower surface and be sleeved on spring 5 successively, in punch retainer 3 and holding pad 7 holes, material returned screw 4 ends are threaded with holding pad 7, have the screwed hole more than three on the holding pad 7 outside the material returned screw 4, plural guide pin bushing 2 is equipped with in cope match-plate pattern 1 lower end of punch retainer 3 and holding pad 7 outsides;
2) lower mould assembly: comprise lower bolster 8, guide pillar 9, die 10, die cushion block 11 and head part spring 12; In the die 10 at center, lower bolster 8 upper surface die cushion block 11 is housed, head part spring 12 is equipped with in the lower surface of die cushion block 11, die cushion block 11 forms with die 10 inner chambers and is slidingly matched, head part spring 12 withstands on die cushion block 11 large end faces, it is consistent with guide pin bushing quantity on the cope match-plate pattern and form and be slidingly matched that die cushion block 11 center lines and punch 6 central lines, die 10 outsides on the lower bolster are equipped with plural guide pillar.
Described die 10, the appearance profile shape of die 10 and appearance and size and drawing part expansion shape and consistent size.
When pull and stretch rule drawing part, the i.e. drawing part of the revolving body floor projection size of representing with a diameter parameters, the expansion profile and the consistent size of pull and stretch die profile and size and regular shape drawing part, the die profile radius in the cupping tool equal the die edge to the die cavity radical length and along all transition.As the pull and stretch cylindrical part, the cylindrical part expansion shape is circular, the cylindrical part development size is represented with diameter, therefore the die profile is circular, circular die appearance and size is represented with diameter, die profile and size and cylindrical part expansion shape and consistent size, promptly body diameter equals the cylindrical part deployment diameter, and die profile radius equals the difference of circular radius in die profile radius and the die and along the circumference transition.
Described die 10, when the erose drawing part of pull and stretch floor projection, the i.e. drawing part of the floor projection shape that can not represent with a parameter, the expansion profile and the consistent size of pull and stretch die profile and size and erose drawing part, die profile radius in the cupping tool equals the die edge to the die cavity radical length, the die edge shape is irregular, the die edge is unequal to the die cavity radical length, so the die profile radius along week is inconsistent, but between each die profile radius in week, want rounding off.As the pull and stretch box part, the box part expansion shape is irregular, the box part development size can not be represented with a parameter, therefore the die profile is irregular, the die profile can not be with a size Expressing, die profile and size and box part expansion shape and consistent size, die profile radius equals irregular die edge to the die cavity radical length, because the die edge shape is irregular, unequal along the die edge to the die cavity radical length, die profile radius is inconsistent, but will be along all rounding ofves between each die profile radius.
Described die 10, the appearance profile shape of die 10 and appearance and size and drawing part expansion shape and consistent size.As Fig. 9 a is cylindrical shape drawing part figure, Fig. 9 b cylindrical shape drawing part expanded view, and expansion shape is circular, and development size represents that with diameter D Fig. 9 c is cylindrical shape die figure, and the profile of cylindrical shape die is consistent with cylindrical shape drawing part expansion shape, is circle.Cylindrical shape die appearance and size is represented with diameter D and is equaled cylindrical shape drawing part development size D.
Fig. 9 d is a box-like drawing part front view, Fig. 9 e is a box-like drawing part vertical view, Fig. 9 f is a box-like drawing part expanded view, Fig. 9 g is a box-like die front view, Fig. 9 h is a box-like die vertical view, and box-like die outer shape and size are launched profile and consistent size (Fig. 9 f and Fig. 9 h outer shape are consistent) with the box-like drawing part.
Described die 10, when pull and stretch rule drawing part, i.e. the drawing part of the revolving body floor projection size of representing with a diameter parameters, the expansion profile and the consistent size of pull and stretch die profile and size and regular shape drawing part.Die profile radius in the cupping tool equals the die edge to the die cavity radical length and along all transition.As Fig. 9 a is cylindrical shape drawing part figure, Fig. 9 b cylindrical shape drawing part expanded view, and expansion shape is circular, and development size represents that with diameter D Fig. 9 c is cylindrical shape die figure, and the profile of cylindrical shape die is consistent with cylindrical shape drawing part expansion shape, is circle.Cylindrical shape die appearance and size is represented with diameter D, and is equaled cylindrical shape drawing part development size D.Die profile radius equals the poor of die profile radius and the interior circular radius of die, promptly
, and along the circumference transition.
Described die 10, when the erose drawing part of pull and stretch floor projection, i.e. the drawing part of the floor projection shape that can not represent with a parameter, the expansion profile and the consistent size of pull and stretch die profile and size and erose drawing part.Die profile radius in the cupping tool equals the die edge to the die cavity radical length, because the die edge shape is irregular, the die edge is to die cavity radical length and unequal, thus the die profile radius in edge week and inconsistent, but between each die profile radius in week, want rounding off.As Fig. 9 d is box-like drawing part front view, Fig. 9 e is a box-like drawing part vertical view, Fig. 9 f is a box-like drawing part expanded view, Fig. 9 g is a box-like die front view, Fig. 9 h is a box-like die vertical view, and box-like die outer shape and size are launched profile and consistent size (Fig. 9 f and Fig. 9 h outer shape are consistent) with the box-like drawing part.Because the die profile radius in the cupping tool equals the die edge to the die cavity radical length, and die edge to die cavity radical length equals S respectively
1, S
2, S
3(Fig. 9 h) or the like is because S
1, S
2, S
3Each is unequal, and die profile radius R equals S respectively along one week and unequal of shape in the die
1, S
2, S
3, or the like, but will be along all rounding ofves between each die profile radius.
Operation principle of the present invention is as follows:
When last mould assembly was also not descending, punch 6 lower planes and holding pad 7 lower planes had certain difference.Pretension state at the beginning of this moment, spring 5 had one, as shown in Figure 1.Last mould assembly continues to come downwards to plane contact on holding pad 7 lower planes and the plate 13 that is placed on the die 10, holding pad 7 keeps under the motionless situation subsequently, when punch 6 comes downwards to plane on the contact plate 13, spring 5 decrements increase, punch 6 continues descending, die cushion block 11 is moving downwards, and head part spring 12 is compressed.Punch 6 comes downwards to pull and stretch and finishes, as shown in Figure 2.It is up to go up subsequently mould assembly, and when punch 6 was up, die cushion block 11 is up motion under the effect of head part spring 12, with workpiece jack-up.
The above-mentioned specific embodiment is used for the present invention that explains, rather than limits the invention, and in the protection domain of spirit of the present invention and claim, any modification and change to the present invention makes all fall into protection scope of the present invention.
Claims (1)
- One kind can't flange edge die the deep drawing mould, it is characterized in that comprising mould assembly and lower mould assembly, wherein:1) goes up mould assembly: comprise cope match-plate pattern (1), guide pin bushing (2), punch retainer (3), material returned screw (4), spring (5), punch (6) and holding pad (7); The punch (6) of leaving pore is equipped with at cope match-plate pattern (1) center, lower surface, punch (6) is sleeved in punch retainer (3) hole and holding pad (7) hole from top to bottom successively, and form with punch retainer (3) hole and holding pad (7) hole and to be slidingly matched, punch retainer (3) adopts thread connection with cope match-plate pattern (1), have the through hole more than three on the cope match-plate pattern (1) of punch (6) outside and the punch retainer (3), material returned screw (4) all is housed in each through hole, the material returned screw (4) that exposes in cope match-plate pattern (1) lower surface is sleeved on punch retainer (3) successively, in spring (5) and holding pad (7) hole, material returned screw (4) end is threaded with holding pad (7), material returned screw (4) corresponding holding pad (7) on have described holding pad hole more than three, described holding pad hole is a screwed hole, and plural guide pin bushing (2) is equipped with in cope match-plate pattern (1) lower end of punch retainer (3) and holding pad (7) outside;2) lower mould assembly: comprise lower bolster (8), guide pillar (9), die (10), die cushion block (11) and head part spring (12); In the die (10) at lower bolster (8) center, upper surface die cushion block (11) is housed, head part spring (12) is equipped with in the lower surface of die cushion block (11), die cushion block (11) forms with die (10) inner chamber and is slidingly matched, head part spring (12) withstands on die cushion block (11) large end face, die cushion block (11) center line and punch (6) central lines, the die on the lower bolster (10) outside are equipped with plural guide pillar and are slidingly matched with the consistent also formation of guide pin bushing quantity on the cope match-plate pattern;Described die (10), when pull and stretch rule drawing part, the i.e. drawing part of the revolving body floor projection size of representing with a diameter parameters, the expansion profile and the consistent size of pull and stretch die appearance profile shape and appearance and size and regular shape drawing part, the die profile radius in the cupping tool equal the die edge to the die cavity radical length and along all transition;Described die (10), when the erose drawing part of pull and stretch floor projection, the i.e. drawing part of the floor projection shape that can not represent with a parameter, the expansion profile and the consistent size of pull and stretch die appearance profile shape and appearance and size and erose drawing part, die profile radius in the cupping tool equals the die edge to the die cavity radical length, the die edge shape is irregular, the die edge is unequal to the die cavity radical length, so the die profile radius along week is inconsistent, but between each die profile radius in week, want rounding off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101219487A CN101402119B (en) | 2008-10-23 | 2008-10-23 | Deep draw mould without flange edge die plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101219487A CN101402119B (en) | 2008-10-23 | 2008-10-23 | Deep draw mould without flange edge die plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101402119A CN101402119A (en) | 2009-04-08 |
| CN101402119B true CN101402119B (en) | 2010-11-17 |
Family
ID=40536360
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101219487A Expired - Fee Related CN101402119B (en) | 2008-10-23 | 2008-10-23 | Deep draw mould without flange edge die plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101402119B (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101912926B (en) * | 2010-08-17 | 2012-05-30 | 上海工程技术大学 | Multipurpose sheet metal stamping die-set for positive edge pressing |
| CN102371309B (en) * | 2010-08-26 | 2013-07-31 | 哈尔滨建成集团有限公司 | Deep drawing forming composite die for shallow conical pieces with sunken side walls |
| JP5375941B2 (en) * | 2011-12-21 | 2013-12-25 | Ｊｆｅスチール株式会社 | Press molding tool design method, press molding tool |
| CN102615187A (en) * | 2012-04-04 | 2012-08-01 | 无锡欧易博阀业科技有限公司 | Drawing die for bellmouthed cup-shaped workpiece |
| CN102615183A (en) * | 2012-04-04 | 2012-08-01 | 无锡欧易博阀业科技有限公司 | Flanging die for wafer-shaped workpiece |
| CN102896223B (en) * | 2012-09-28 | 2015-02-18 | 蚌埠市昊业滤清器有限公司 | Lower die structure with automatically-bouncing filter screw plate after punching |
| CN103170533B (en) * | 2013-04-16 | 2015-04-29 | 东莞市容辰制罐有限公司 | Cutting mold |
| CN103357734B (en) * | 2013-07-16 | 2015-04-22 | 上海梅山钢铁股份有限公司 | Taper blank-holding and deep-drawing stamping method |
| CN108994140B (en) * | 2018-08-31 | 2024-04-19 | 苏州瑞玛精密工业股份有限公司 | Deep drawing mechanism |
| CN112453164A (en) * | 2020-11-19 | 2021-03-09 | 首都航天机械有限公司 | Technological equipment for preforming of large-size bowl-shaped structural part |
| CN116329395B (en) * | 2023-04-11 | 2023-09-22 | 清远市拓远汽车零部件有限公司 | Multistage drawing die for combined aluminum alloy plate |
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2008
- 2008-10-23 CN CN2008101219487A patent/CN101402119B/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN101402119A (en) | 2009-04-08 |
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Granted publication date: 20101117 Termination date: 20111023 |