CN101700548B - Punching die based on uneven resistance of deep-drawing rib - Google Patents
Punching die based on uneven resistance of deep-drawing rib Download PDFInfo
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- CN101700548B CN101700548B CN2009103098566A CN200910309856A CN101700548B CN 101700548 B CN101700548 B CN 101700548B CN 2009103098566 A CN2009103098566 A CN 2009103098566A CN 200910309856 A CN200910309856 A CN 200910309856A CN 101700548 B CN101700548 B CN 101700548B
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- resistance
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- drawbead
- deep
- blank holder
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Abstract
The invention discloses a punching die based on uneven resistance of a deep-drawing rib, belonging to the technical field of metal plasticty machining. The punching die comprises a convex die, a concave die, a blank holder, a convex die base plate, a lower die plate, a guide post, a guide sleeve, a guide plate and a convex die gasket, wherein the convex die and the convex die base plate are fixedly connected with each other, the convex die base plate is fixedly arranged on the lower die plate, the lower die plate is connected with a downwardly-arranged motion mechanism of a pressure machine, the blank holder is connected with the pressure machine, the guide plate is arranged in the blank holder and contacted with the convex die, the guide post and the guide sleeve are respectively arranged in the blank holder and the concave die, and the positions of the guide post and the guide sleeve are matched with each other, the concave die is fixedly connected with an upper slider of the pressure machine, and two sides corresponding to the positions of the convex die are respectively provided with two deep-drawing ribs with variable resistance and two corresponding lower grooves on a material pressing surface of the blank holder. By adopting the invention, the flow evenness of metals of a flange part and a side wall part of box-shaped components with inclined bottom surfaces is remarkably improved, and local crushing or wrinkling conditions caused by even increase or even decrease of the resistance of the deep-drawing ribs are avoided.
Description
Technical field
What the present invention relates to is a kind of device of Metal Forming technical field, specifically is a kind of diel based on uneven resistance of deep-drawing rib.
Background technology
Be provided with drawbead mostly on the drawing die binder surface of complicated sheet metal part; Drawbead can be controlled the resistance that the plate that is stretched gets into die; Improve the formability of plate, avoid producing the defective that the part is wrinkling and break, in stretch forming, play crucial effects.
Normally cross section etc. is high along its length for present drawbead size design, and this drawbead can provide along its length uniformly the drawbead resistance with the control sheet metal deformation.For having the not stretching of the wedged bottom box-like stamping parts of even depth in the commercial production, adopt high designs such as this drawbead cross section, be unfavorable for shaping than position, deep shape.
Retrieval through to prior art finds that Chinese patent document number CN1342532 has put down in writing a kind of " drawing die for forming metallic sheet by punching ", can improve the flow regime of radius area in the plate plastic forming process.But this patent is in straight drawbead and oblique drawbead design part, and the description of the sectional dimension of drawbead and non-equal altitudes inhomogeneous along length is not arranged.
Find through retrieval again; Patent document number CN101259499A has put down in writing a kind of " multi-point continuous height-adjustable draw-bead structure "; Through adopting a plurality of ball screws of arranging continuously to constitute novel drawbead, stretching out highly of adjustment ball screw reaches the requirement of the drawbead resistance of setting.But this patent is not considered for the stretching of the wedged bottom box part of non-even depth and the uneven resistance of deep-drawing rib that needs, is not provided the high Design Mode of drawbead depth of section along the drawbead direction yet.
Summary of the invention
The present invention is directed to the above-mentioned deficiency that prior art exists; A kind of diel based on uneven resistance of deep-drawing rib is provided; Gradient according to the tensioning member bottom; Drawbead is arranged to non-equal altitudes along its length direction, and along with the box part degree of depth dull continuous transition from shallow to deep, the height of drawbead reduces continuously.
The present invention realizes through following technical scheme; The present invention includes: punch, die, blank holder, convex mould pad, lower bolster, guide pillar, guide pin bushing, guide plate and punch pad; Wherein: punch is fixedly connected with convex mould pad, and convex mould pad is fixedly set on the lower bolster, and lower bolster is connected with the underlying motion of forcing press; Blank holder links to each other with forcing press; Guide plate is arranged in the blank holder and with punch and contacts, and guide pillars and bushes is fixedly set in the blank holder respectively and in the die and position is complementary, and die is fixedly connected with the top shoe of forcing press.
The both sides of corresponding punch position are respectively equipped with two low grooves that become resistance drawbead and two correspondences on the binder surface of described blank holder; Wherein: become the resistance drawbead and be movably set in the low groove, the parallel and contact in the bottom surface of the low groove on the bottom surface that becomes the resistance drawbead and the blank holder and be win perpendicular to four sides of the change resistance drawbead of bottom surface with the side of low groove and cooperate.
The end, cross section of described change resistance drawbead is the rectangle of rounding, and the upper surface that becomes the resistance drawbead is resistance area, and this resistance area and bottom surface are not parallel to each other, and the height that becomes the resistance drawbead passes through and is monotonic increase or monotone decreasing.
Described die is provided with upper groove, and the shape and the low groove of this upper groove are complementary, and the gap between change resistance drawbead and the upper groove is more than or equal to the thickness of pending plate.
Described change resistance drawbead length L is the 100-1000 millimeter, and the height that becomes resistance drawbead low side is the 10-16 millimeter, and the upper surface and the angle that the bottom surface is that become the resistance drawbead are 2-5 °, and the knuckle radius that becomes the resistance drawbead is the 3-8 millimeter.
The present invention for stretching depth by shallow monotonic increase to dark wedged bottom box part punching press; The change resistance drawbead method for designing of utilizing this patent to propose; Can guarantee that the sheet metal deformation metal flow is even; Avoid owing to defective, the stretch forming quality of raising stamping parts such as adopt equal altitudes to become inhomogeneous and wrinkling, the excessive attenuation of distortion that the setting of resistance drawbead causes and to break.
Mould according to the invention may be used on the press forming die of complicated shape part, and especially the poor high-strength steel plate stamping and forming die of deformability can significantly improve the inhomogeneities that localized metallic flows, and improves the uniformity of stamping parts thickness.Mould in this patent need not adopt new mould structure, and mold materials does not have special requirement.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the blank holder vertical view.
Fig. 3 is for becoming resistance drawbead cutaway view.
The specific embodiment
Elaborate in the face of embodiments of the invention down, present embodiment provided detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment being to implement under the prerequisite with technical scheme of the present invention.
As shown in Figure 1; Present embodiment comprises: die 1, guide pin bushing 2, guide pillar 3, blank holder 4, guide plate 5, punch 6, convex mould pad 7, lower bolster 8, punch pad 9, punch hold-down screw 10, shim screw 11, first becomes resistance drawbead 12, first drawbead 13, second drawbead 14, second and becomes resistance drawbead 15; Wherein: punch 6 links to each other with convex mould pad 7 through screw 10; Convex mould pad 7 is installed on the lower bolster 8 through screw 11, and lower bolster 8 can link to each other with the underlying motion of forcing press; Blank holder 4 links to each other with the forcing press hydraulic system through the push rod that forcing press carries, and guide plate 5 is installed in the hole of blank holder 4 to realize and being slidingly connected of punch 6; Blank holder 4 is slidingly connected through the guide pin bushing of installing on the guide pillar 2 installed on it and the die 12; Die 1 links to each other with the top shoe of equipment through bridge screw.
As shown in Figures 2 and 3, the length L that the described first change resistance drawbead 12 and second becomes resistance drawbead 15 is 100 millimeters, and end face gradient α is 3 ° on it;
The height a that the described first change resistance drawbead 12 and second becomes resistance drawbead 15 1 sides is 13 millimeters;
The knuckle radius R1 that the described first change resistance drawbead 12 and second becomes resistance drawbead 15 is 4 millimeters, and knuckle radius R2 is 4 millimeters.
When present embodiment is used to be shaped one not during the box part stretch forming of even depth, the box part left side is dark and the right side is more shallow, from left to right, and dull, the mild transition of the degree of depth.The height that two of front and back become the resistance drawbeads from left to right increase gradually, during drawing, form the enhanced stretch resistance that from left to right increases gradually in the front and back of mould, help improving the uniformity of this box part shaping.Compare with existing mould structure, still adopt traditional unitary mould structure, but the inhomogeneity ability of local control metal flow significantly improves, can obviously improve the uniformity and the inhomogeneities that reduces residual stress distribution of plate.
Claims (7)
1. diel based on uneven resistance of deep-drawing rib; Comprise: punch, die, blank holder, convex mould pad, lower bolster, guide pillar, guide pin bushing, guide plate and punch pad, wherein: punch is fixedly connected with convex mould pad, and convex mould pad is fixedly set on the lower bolster; Lower bolster is connected with the underlying motion of forcing press; Blank holder links to each other with forcing press, and guide plate is arranged in the blank holder and with punch and contacts, and guide pillars and bushes is fixedly set in the blank holder respectively and in the die and position is complementary; Die is fixedly connected with the top shoe of forcing press, it is characterized in that:
The both sides of corresponding punch position are respectively equipped with two low grooves that become resistance drawbead and two correspondences on the binder surface of described blank holder, wherein: become the resistance drawbead and be movably set in the low groove.
2. the diel based on uneven resistance of deep-drawing rib according to claim 1; It is characterized in that the parallel and contact in the bottom surface of the low groove on the bottom surface of described change resistance drawbead and the blank holder and be interference fit perpendicular to four sides of the change resistance drawbead of bottom surface and the side of low groove.
3. the diel based on uneven resistance of deep-drawing rib according to claim 1 is characterized in that, the end, cross section of described change resistance drawbead is the rectangle of rounding, and the upper surface that becomes the resistance drawbead is resistance area, and this resistance area and bottom surface are not parallel to each other.
4. the diel based on uneven resistance of deep-drawing rib according to claim 3 is characterized in that, the height of described change resistance drawbead passes through and is monotonic increase or monotone decreasing.
5. the diel based on uneven resistance of deep-drawing rib according to claim 1 is characterized in that described die is provided with upper groove, and the shape and the low groove of this upper groove are complementary.
6. the diel based on uneven resistance of deep-drawing rib according to claim 5 is characterized in that, described upper groove, itself and become gap between the resistance drawbead more than or equal to the thickness of pending plate.
7. according to arbitrary described diel in the claim 1 to 4 based on uneven resistance of deep-drawing rib; It is characterized in that; Described change resistance drawbead, its length L is the 100-1000 millimeter, the height of its low side is the 10-16 millimeter; Its upper surface and angle that the bottom surface is are 2-5 °, and its knuckle radius is the 3-8 millimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103098566A CN101700548B (en) | 2009-11-17 | 2009-11-17 | Punching die based on uneven resistance of deep-drawing rib |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103098566A CN101700548B (en) | 2009-11-17 | 2009-11-17 | Punching die based on uneven resistance of deep-drawing rib |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101700548A CN101700548A (en) | 2010-05-05 |
| CN101700548B true CN101700548B (en) | 2012-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009103098566A Expired - Fee Related CN101700548B (en) | 2009-11-17 | 2009-11-17 | Punching die based on uneven resistance of deep-drawing rib |
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Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102151752B (en) * | 2010-12-10 | 2012-09-05 | 重庆大学 | Stamping mould with movable draw bead |
| CN102527804B (en) * | 2011-12-31 | 2014-04-02 | 苏州三维精密机械有限公司 | Oblique drawing process |
| CN102873163B (en) * | 2012-10-19 | 2014-07-02 | 安徽江淮汽车股份有限公司 | Method for forming tail door inner plate die surface |
| CN102861806A (en) * | 2012-10-31 | 2013-01-09 | 机械科学研究总院先进制造技术研究中心 | Inclined hot stamping molding method of motor bracket |
| CN103111521B (en) * | 2013-02-06 | 2014-11-05 | 宁波五谷金属制品有限公司 | Drawing die of rectangular container and drawing method |
| CA2905000C (en) * | 2013-06-28 | 2017-05-16 | Nisshin Steel Co., Ltd. | Ironing mold and formed material manufacturing method |
| CN103521585B (en) * | 2013-10-30 | 2016-02-10 | 北京星航机电装备有限公司 | A kind of titanium alloy fusiform component Hot drawing method and device thereof |
| CN105251845B (en) * | 2014-07-18 | 2017-08-11 | 浙江炜驰机械集团有限公司 | A kind of shaped device of strength plates |
| CN104226777B (en) * | 2014-10-14 | 2016-06-22 | 哈尔滨工业大学 | A kind of deep camber thin-wall member resisting medium external pressure shaping method |
| CN108555147A (en) * | 2018-04-28 | 2018-09-21 | 自贡东方彩钢结构有限公司 | A kind of ship template shaping dies |
| CN112091043B (en) * | 2020-09-17 | 2021-05-11 | 济南中航远洋船舶机械有限公司 | Stamping equipment with caliber smaller than maximum diameter |
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2009
- 2009-11-17 CN CN2009103098566A patent/CN101700548B/en not_active Expired - Fee Related
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| CN101700548A (en) | 2010-05-05 |
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