CN101195142A - Mold and shaping technique for metal sheet material deep-drawing cup shell - Google Patents
Mold and shaping technique for metal sheet material deep-drawing cup shell Download PDFInfo
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- CN101195142A CN101195142A CNA2007103077147A CN200710307714A CN101195142A CN 101195142 A CN101195142 A CN 101195142A CN A2007103077147 A CNA2007103077147 A CN A2007103077147A CN 200710307714 A CN200710307714 A CN 200710307714A CN 101195142 A CN101195142 A CN 101195142A
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Abstract
The invention discloses a die assembly of metal plate deep-drawing cup shells and shaping process. The invention comprises an upper die holder and a lower die holder, wherein a punch and a cavity die which are mutually corresponded are respectively arranged on the upper die holder and the lower die holder, a discharging screw which is connected with the upper die holder and a flanging spring which is sleeved on the discharging screw are arranged on the outer side of the punch, a blank holder is arranged on the lower end of the discharging screw, a holding frame which is fixedly connected with the lower die holder is arranged on the outer side of the cavity die, a conical pushing block and a rubber pad are arranged in turn in the holding frame from top to bottom, a conical enclasping element which is matched with the punch is arranged in the conical pushing block, a spring holder is arranged on the lower end of the lower die holder, a material squeezing spring is arranged in the spring holder, and a push rod which is extended through the rubber pat, the conical pushing block, and a conical clamping element is arranged on the upper end of the material squeezing spring. The invention carries out enclasping along the side-wall direction during the deep-drawing process of cup shells, material flowing tendency can be changed flexibly and actively, which enables wall thickness to be changed evenly, maximum thinning-out quantity on a dangerous cross portion during the process for drawing can be minimized and drawing breakage can be avoided.
Description
Technical field
The invention belongs to material forming and mould applications, relate in particular to a kind of mould and moulding process of metal sheet material deep-drawing cup shell.
Background technology
Metal sheet stamping is shaped and has been widely used in many fields.How to make full use of and bring into play forming property, the new forming technology and the method for excavation of material, improving forming efficiency and quality is the important topic that whole industry faces, and also is the focus of domestic and international plastic working circle research.The cup shell drawing and forming is a kind of at the most widely used moulding process of metal sheet stamping forming field, in cup shell drawing and forming process, improve at present mainly the drawing and forming efficient and the quality of plate, especially to the research of technological parameter such as pressure-pad-force, punch-nose angle, die entrance, lubricating condition and mould structure by optimum organization technological parameter and mold structure parameter.Yet with regard to the technology and achievement that obtain now, still rest on of perceptual knowledge so far, definite and the optimization of technological parameter and mould structure often needs long repetition test, and summary is concluded and obtained, and the effect of raising cup shell pull and stretch efficient and quality is also not obvious.Because in the cup shell drawing process, the drawing part distortion is inhomogeneous, the Thickness Distribution inequality, thus its pull and stretch always breaks to produce at first in maximum attenuation place of wall thickness and causes whole drawing and forming failure, and also the flow tendency of metal has very big relation in drawing crack generation of defects and the drawing process.
Summary of the invention
Thereby the object of the present invention is to provide a kind of mould and moulding process that effectively improves the metal sheet material deep-drawing cup shell of drawing and forming efficient and quality by ACTIVE CONTROL metal flow trend.
For achieving the above object, mould of the present invention is: comprise upper bolster and die shoe, upper bolster is connected by guide pillar with die shoe, on upper bolster and die shoe, be respectively arranged with the punch and the die of mutual correspondence, the arranged outside of punch has the discharging screw that is connected with upper bolster and is sleeved on flanging spring on the discharging screw, lower end at the discharging screw is provided with blank holder, arranged outside at die has the appearance frame of fixedlying connected with die shoe, hold in the frame and be disposed with taper pushing block and rubber blanket from top to bottom, also be provided with the taper that matches with punch in the taper pushing block and hold part tightly, lower end at die shoe is provided with spring base, and in spring base, be provided with the liftout spring, on the liftout spring, be provided with and run through rubber blanket, the push rod of part is held in taper pushing block and taper tightly, is with spring outside the item bar.
Punch of the present invention and discharging screw all are connected with upper bolster by the patrix fixed block; Also be set with guide pin bushing on the guide pillar; It is that the identical piece of holding tightly of three lobe sizes, shape constitutes that part is held in taper tightly, and this holds piece tightly along circumferentially evenly distributing; Push rod is the step-like cylinder of the diameter of a upper end less than lower end diameter, passes through conical surface transition between big footpath and the path; The face angle that part (6) outside is held in taper tightly is 28 °～35 °; Part is held in taper tightly, and to hold the degree of depth tightly be height 40%～45% behind the cup shell pull and stretch.
The technology that the present invention adopts is: upper bolster is descending, flanging spring and blank holder compress the beginning pull and stretch with plate, during the beginning pull and stretch, in liftout spring and spring acting in conjunction, the major diameter position of push rod is in taper and holds tightly in the central small hole of part, holding piece tightly is outwards opening, upper bolster continues descending, material is drawn in the die gradually, this moment, push rod retreated thereupon, liftout spring and spring are compressed, along with punch continues descending, punch drives workpiece and is pressed onto the bottom that part is held in taper tightly, the promotion taper is held part tightly and is moved down, this moment, the minor diameter position of push rod entered in the hole that taper holds part tightly, the clamping of rubber blanket, the taper pushing block moves down, three lobes are held piece tightly and are radially drawn close simultaneously, workpiece is held tightly, punch continues descending, the compression of rubber blanket, workpiece bottom and sidewall are being held tightly under the state along with push rod, part is held in taper tightly, taper pushing block while rigidity moves down and carries out pull and stretch, until pull and stretch to lower dead point position, when upper bolster makes progress return, rubber blanket, the liftout spring, the acting in conjunction of spring, push rod, part is held in taper tightly and the taper pushing block moves simultaneously, taper pushing block stop motion when rubber blanket is in normal condition, push rod, taper is held the relative taper pushing block of part tightly and is continued to move upward, and punch upwards draws, workpiece is ejected taper gradually hold part and die tightly, taper is simultaneously held part tightly successively under the effect of push rod major diameter part, outwards open, for next pull and stretch ready.
Because the present invention applies the power of necessarily holding tightly in drawing process the sidewall position of workpiece, make workpiece can hold punch tightly, increase the frictional force between punch and workpiece, change the metal flow trend of sidewall, prevent the especially further attenuation of critical section of weakened section material, make wall thickness thickening place participate in distortion more, drawing part Thickness Distribution trend is even, thereby has postponed the generation of cracking.Improved the deep-drawing deformation uniformity coefficient of material, reduced number of drawing, forming efficiency also will improve greatly.
Description of drawings
Fig. 1 is an overall structure schematic diagram of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is described in further detail.
Referring to Fig. 1, comprise upper bolster 8 and die shoe 1, upper bolster 8 is connected by guide pillar 2 with die shoe 1, also be set with guide pin bushing 10 on the guide pillar 2, on upper bolster 8 and die shoe 1, be respectively arranged with the punch 12 and the die 7 of mutual correspondence, the arranged outside of punch 12 has the discharging screw 11 that is connected with upper bolster 8 and is sleeved on flanging spring 13 on the discharging screw 11, be provided with blank holder 14 in the lower end of discharging screw 11, punch 12 and discharging screw 11 all are connected with upper bolster 8 by patrix fixed block 9, arranged outside at die 7 has the appearance frame 3 of fixedlying connected with die shoe 1, hold in the frame 3 and be disposed with taper pushing block 5 and rubber blanket 4 from top to bottom, also be provided with the taper that matches with punch 12 in the taper pushing block 5 and hold part 6 tightly, it is three lobe sizes that part 6 is held in taper tightly, the piece of holding tightly that shape is identical constitutes, this holds piece tightly along circumferentially evenly distributing, be provided with spring base 17 in the lower end of die shoe 1, and in spring base 17, be provided with liftout spring 18, be provided with in liftout spring 18 upper ends and run through rubber blanket 4, taper pushing block 5 and taper are held the diameter of upper end of part 6 tightly less than the step-like cylinder push rod 15 of lower end diameter, are with spring 16 outside item bar 15.
Moulding process of the present invention is as follows: upper bolster 8 is descending, under the effect of flanging spring 13 and blank holder 14, plate is compressed the beginning pull and stretch, during the beginning pull and stretch, under the acting in conjunction of liftout spring 18 and spring 16, the major diameter position of push rod 15 is in taper holds tightly in the central small hole of part 6, holds piece tightly and is outwards opening.Upper bolster 8 continues descending, and material is drawn in the die 7 gradually, and this moment, push rod 15 retreated thereupon, and liftout spring 18 and spring 16 are compressed.Along with punch 12 continuation are descending, punch 12 drives workpiece and is pressed onto the bottom that part 6 is held in taper tightly, and the promotion taper is held part 6 tightly and moved down.This moment, the minor diameter position of push rod 15 entered in the hole that taper holds part 6 tightly, because the clamping force of rubber blanket 4 is bigger, taper pushing block 5 amounts of moving down are little, and under the effect of the conical surface, three lobes are held piece tightly and radially drawn close simultaneously, and workpiece is held tightly within it.Punch 12 continues descending, because the compression of rubber blanket 4, the power of holding tightly further increases, workpiece bottom and sidewall hold tightly under the state along with push rod 15, taper hold tightly part 6, taper pushing block 5 simultaneously rigidity move down and carry out pull and stretch, until pull and stretch to lower dead point position.When upper bolster 8 makes progress return, under the acting in conjunction of rubber blanket 4, liftout spring 18, spring 16, part 6 is held in push rod 15, taper tightly and taper pushing block 5 moves simultaneously, taper pushing block 5 stop motions when rubber blanket 4 is in normal condition, push rod 15, taper are held part 6 relative taper pushing blocks 5 tightly and are continued to move upward, add acting on the punch 12, workpiece is ejected taper gradually hold part 6 and die 7 tightly to upper pulling force (frictional force).Taper is simultaneously held part 6 tightly successively under the effect of push rod 15 major diameters part, outwards open, for next pull and stretch ready.
The present invention has a cover hold-fast body in counterdie holds frame, mainly hold part 6, taper pushing block 5, push rod 15, rubber blanket 4, spring 16 tightly by taper and form.It is that the identical piece of holding tightly of three lobe sizes, shape constitutes that part 6 is held in taper tightly, this holds piece tightly along circumferentially evenly distributing, when closing up together, its profile constitutes a complete conical surface, match with shape in the taper pushing block 5, and shape has constituted a cylindrical hole of being with the end in it, cooperates with pull and stretch part profile the pull and stretch part is held tightly.
Below be the invention main points:
For guaranteeing effectively to hold tightly, the interior shape size of taper being held tightly part 6 should have the certain precision requirement, is taken as (d+t) according to punch appearance and size and material thickness
-Δ, d is a convex mould diameter, t is thick for material.The Δ value should be suitable, and value is too big, makes plate produce the plasticity attenuation at thickness direction, influences the workpiece dimensional requirement; Value is too little, and it is unreliable to hold tightly, generally gets Δ=(1%～2%) t.
When the conical surface angle design that part 6 profiles constitute is held in taper tightly, prevent from that taper pushing block 5 and taper from holding tightly between the part 6 to produce self-locking, will consider between vertical displacement and the horizontal displacement simultaneously and hold relation between power and the drawing pressure tightly.Getting 28 °～35 ° through calculating herein is advisable.
Part 6 is held in taper tightly must certain degree of depth, if too shallow, then owing to would fail effectively to hold tightly part or make under the power that workpiece is thick to influence wall thickness accuracy to producing plastic deformation holding tightly more greatly.When the degree of depth is too big, is equivalent to hold tightly constantly and postpones.General the best is held the degree of depth tightly and is got (40%～45%) h, and h is the height behind the cup shell pull and stretch.
The present invention is in the cup shell drawing process, initiatively apply external force control metal flow trend, delay and stops drawing crack generation of defects, reduction Limit Drawing coefficient, improve the uniformity of cup shell pull and stretch wall thickness, can improve cup shell drawing and forming efficient and quality significantly.If being applied to practice, this new way produces, energy-conservation material-saving, and cost significantly reduces, and can realize the plastic deformation Accurate Shaping, and improve production efficiency and product quality strengthens the productivity and the competitiveness of enterprise, has a extensive future.
Claims (8)
1. the mould of a metal sheet material deep-drawing cup shell, comprise upper bolster (8) and die shoe (1), upper bolster (8) is connected by guide pillar (2) with die shoe (1), on upper bolster (8) and die shoe (1), be respectively arranged with the punch (12) and the die (7) of mutual correspondence, it is characterized in that: the arranged outside of punch (12) has the discharging screw (11) that is connected with upper bolster (8) and is sleeved on flanging spring (13) on the discharging screw (11), be provided with blank holder (14) in the lower end of discharging screw (11), arranged outside at die (7) has the appearance frame (3) of fixedlying connected with die shoe (1), hold in the frame (3) and be disposed with taper pushing block (5) and rubber blanket (4) from top to bottom, also be provided with the taper that matches with punch (12) in the taper pushing block (5) and hold part (6) tightly, be provided with spring base (17) in the lower end of die shoe (1), and in spring base (17), be provided with liftout spring (18), on liftout spring (18), be provided with and run through rubber blanket (4), the push rod (15) of part (6) is held in taper pushing block (5) and taper tightly, is with spring (16) outside item bar (15).
2. the mould of metal sheet material deep-drawing cup shell according to claim 1, it is characterized in that: said punch (12) and discharging screw (11) all are connected with upper bolster (8) by patrix fixed block (9).
3. the mould of metal sheet material deep-drawing cup shell according to claim 1 is characterized in that: also be set with guide pin bushing (10) on the said guide pillar (2).
4. the mould of metal sheet material deep-drawing cup shell according to claim 1 is characterized in that: it is that the identical piece of holding tightly of three lobe sizes, shape constitutes that part (6) is held in said taper tightly, and this holds piece tightly along circumferentially evenly distributing.
5. the mould of metal sheet material deep-drawing cup shell according to claim 1, it is characterized in that: said push rod (15) is the step-like cylinder of the diameter of a upper end less than lower end diameter, passes through conical surface transition between big footpath and the path.
6. the mould of metal sheet material deep-drawing cup shell according to claim 1 is characterized in that: the face angle that part (6) outside is held in said taper tightly is 28 °～35 °.
7. the mould of metal sheet material deep-drawing cup shell according to claim 1 is characterized in that: part (6) is held in said taper tightly, and to hold the degree of depth tightly be height 40%～45% behind the cup shell pull and stretch.
8. the moulding process of a metal sheet material deep-drawing cup shell mould as claimed in claim 1, it is characterized in that: upper bolster (8) is descending, flanging spring (13) and blank holder (14) compress the beginning pull and stretch with plate, during the beginning pull and stretch, in liftout spring (18) and spring (16) acting in conjunction, the major diameter position of push rod (15) is in taper and holds tightly in the central small hole of part (6), holding piece tightly is outwards opening, upper bolster (8) continues descending, material is drawn in the die (7) gradually, push rod this moment (15) retreats thereupon, liftout spring (18) and spring (16) are compressed, along with punch (12) continues descending, punch (12) drives workpiece and is pressed onto the bottom that part (6) are held in taper tightly, the promotion taper is held part (6) tightly and is moved down, the minor diameter position of push rod this moment (15) enters in the hole that taper holds part (6) tightly, the clamping of rubber blanket (4), taper pushing block (5) moves down, three lobe clamps are radially drawn close simultaneously, workpiece is held tightly, punch (12) continues descending, the compression of rubber blanket (4), workpiece bottom and sidewall are being held tightly under the state along with push rod (15), part (6) is held in taper tightly, taper pushing block (5) while rigidity moves down and carries out pull and stretch, until pull and stretch to lower dead point position, when upper bolster (8) makes progress return, rubber blanket (4), liftout spring (18), the acting in conjunction of spring (16), push rod (15), part (6) is held in taper tightly and taper pushing block (5) moves simultaneously, rubber blanket (4) is taper pushing block (5) stop motion when being in normal condition, push rod (15), taper is held the relative taper pushing block (5) of part (6) tightly and is continued to move upward, punch (12) upwards draws, workpiece is ejected taper gradually hold part (6) and die (7) tightly, taper is simultaneously held part (6) tightly successively under the effect of push rod (15) major diameter part, outwards open, for next pull and stretch is got ready.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007103077147A CN101195142A (en) | 2007-12-26 | 2007-12-26 | Mold and shaping technique for metal sheet material deep-drawing cup shell |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007103077147A CN101195142A (en) | 2007-12-26 | 2007-12-26 | Mold and shaping technique for metal sheet material deep-drawing cup shell |
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| CN101195142A true CN101195142A (en) | 2008-06-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2007103077147A Pending CN101195142A (en) | 2007-12-26 | 2007-12-26 | Mold and shaping technique for metal sheet material deep-drawing cup shell |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102626741A (en) * | 2012-04-10 | 2012-08-08 | 上海交通大学 | Drawing compound molding die for shell with tooth form on side wall |
| CN102773346A (en) * | 2012-07-27 | 2012-11-14 | 佛山市日丰企业有限公司 | Rocker type side core-pulling panel die cylinder, punch press and infrared punching thermal molding method |
| CN103357734A (en) * | 2013-07-16 | 2013-10-23 | 上海梅山钢铁股份有限公司 | Taper blank-holding and deep-drawing stamping method |
| CN103433974A (en) * | 2013-08-30 | 2013-12-11 | 太仓市微贯机电有限公司 | Mica sheet blanking die |
| CN104492951A (en) * | 2014-12-03 | 2015-04-08 | 柳州通为机械有限公司 | Reinforcement drawing die device |
| CN104669671A (en) * | 2015-03-30 | 2015-06-03 | 王宏斌 | Low-vibration compression molding mold and application method thereof |
| CN106424182A (en) * | 2014-03-19 | 2017-02-22 | 泉州市洛江双阳高捷机动车零部件电脑设计工作室 | Radial extruding and positioning method for part with cup-shaped bottom hole |
| CN106825233A (en) * | 2016-12-13 | 2017-06-13 | 柳州通为机械有限公司 | Headlight for vehicles rack forming mould |
| CN107363147A (en) * | 2016-05-13 | 2017-11-21 | 奥迪股份公司 | Manufacture method and the diel of the complicated sheet material molding part of big stretching depth |
| CN108748619A (en) * | 2018-08-10 | 2018-11-06 | 佛山市南海鑫隆机工机械有限公司 | A kind of Pneumatic holding device for special-shaped plaster mold |
| CN112045019A (en) * | 2020-08-28 | 2020-12-08 | 安徽江淮汽车集团股份有限公司 | Side flanging device |
| CN112062451A (en) * | 2020-09-07 | 2020-12-11 | 王继兴 | Forming machine is used in glass cup processing |
| CN112122934A (en) * | 2020-09-08 | 2020-12-25 | 林健福 | Silver piece processingequipment is used in preparation of silver-clad porcelain wineglass |
| 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 |
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2007
- 2007-12-26 CN CNA2007103077147A patent/CN101195142A/en active Pending
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102626741A (en) * | 2012-04-10 | 2012-08-08 | 上海交通大学 | Drawing compound molding die for shell with tooth form on side wall |
| CN102773346A (en) * | 2012-07-27 | 2012-11-14 | 佛山市日丰企业有限公司 | Rocker type side core-pulling panel die cylinder, punch press and infrared punching thermal molding method |
| CN103357734A (en) * | 2013-07-16 | 2013-10-23 | 上海梅山钢铁股份有限公司 | Taper blank-holding and deep-drawing stamping method |
| 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 |
| CN103433974A (en) * | 2013-08-30 | 2013-12-11 | 太仓市微贯机电有限公司 | Mica sheet blanking die |
| CN106424182B (en) * | 2014-03-19 | 2018-05-01 | 泉州市洛江双阳高捷机动车零部件电脑设计工作室 | Localization method is squeezed in a kind of cupulate bottom outlet part footpath |
| CN106424182A (en) * | 2014-03-19 | 2017-02-22 | 泉州市洛江双阳高捷机动车零部件电脑设计工作室 | Radial extruding and positioning method for part with cup-shaped bottom hole |
| CN104492951A (en) * | 2014-12-03 | 2015-04-08 | 柳州通为机械有限公司 | Reinforcement drawing die device |
| CN104669671A (en) * | 2015-03-30 | 2015-06-03 | 王宏斌 | Low-vibration compression molding mold and application method thereof |
| CN107363147B (en) * | 2016-05-13 | 2019-02-19 | 奥迪股份公司 | Manufacture the method and stamping die of the complicated plate molded part of big stretching depth |
| CN107363147A (en) * | 2016-05-13 | 2017-11-21 | 奥迪股份公司 | Manufacture method and the diel of the complicated sheet material molding part of big stretching depth |
| US10646911B2 (en) | 2016-05-13 | 2020-05-12 | Audi Ag | Method and pressing tool for producing a complex formed sheet metal part with great drawing depth |
| CN106825233A (en) * | 2016-12-13 | 2017-06-13 | 柳州通为机械有限公司 | Headlight for vehicles rack forming mould |
| CN108748619A (en) * | 2018-08-10 | 2018-11-06 | 佛山市南海鑫隆机工机械有限公司 | A kind of Pneumatic holding device for special-shaped plaster mold |
| CN112045019A (en) * | 2020-08-28 | 2020-12-08 | 安徽江淮汽车集团股份有限公司 | Side flanging device |
| CN112062451A (en) * | 2020-09-07 | 2020-12-11 | 王继兴 | Forming machine is used in glass cup processing |
| CN112122934A (en) * | 2020-09-08 | 2020-12-25 | 林健福 | Silver piece processingequipment is used in preparation of silver-clad porcelain wineglass |
| CN112122934B (en) * | 2020-09-08 | 2022-08-16 | 林健福 | Silver piece processingequipment is used in preparation of silver-clad porcelain wineglass |
| 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 |
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