CN101306448A - Sheet metal rigid particles or compressible powder half-module shaping technique - Google Patents

Sheet metal rigid particles or compressible powder half-module shaping technique Download PDF

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Publication number
CN101306448A
CN101306448A CNA2008100550203A CN200810055020A CN101306448A CN 101306448 A CN101306448 A CN 101306448A CN A2008100550203 A CNA2008100550203 A CN A2008100550203A CN 200810055020 A CN200810055020 A CN 200810055020A CN 101306448 A CN101306448 A CN 101306448A
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die
compressible powder
forming
sheet metal
powder
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CNA2008100550203A
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Chinese (zh)
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骆俊廷
顾勇飞
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Yanshan University
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Yanshan University
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Priority to CNA2008100550203A priority Critical patent/CN101306448A/en
Publication of CN101306448A publication Critical patent/CN101306448A/en
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Abstract

The invention discloses a flexible die forming technique of sheet metal rigid particles or compressible powder, which is characterized in that: a. a male die (1) of a die is designed, processed and manufactured based on the shape and the size of forming sheet metal parts; b. a case body (4) is designed, and the rigid particles or the compressible powder is placed in the case body (4); c. the sheet metal (3) is placed on the case body (4), and is held down by a blank holder (2); d. under the action of a pressure P, the male die (1) of the die moves downwards, the female die shape is formed by the movement of the solid rigid particles (4), or is formed by compressing the compressible powder (6), thus forming the sheet metal; e. the male die (1) of the die returns, the parts are ejected or directed taken down from the case body (4), and the forming of the next part goes on; and f. if the case body (4) is filled with the solid rigid particles (4), the particles automatically reset after the die (1) of the die returns; and if the case body (4) is filled with the compressible powder (6), the forming of the next part goes on after adding a certain amount of power again, or after dispersing the powder by adopting a stirring device or a vibrating device. The technique of the invention can increase the forming limit of the sheet metal, facilitate the machining forming of the parts with complex shapes, reduce the processing cost of the die, improve the labor efficiency and facilitate the realization of automation.

Description

Metal blank rigid particles or compressible powder half-module shaping technique
Technical field
The present invention relates to a kind of metal Precision Forming Technology field, particularly relate to a kind of metal blank rigid particles or compressible powder half-module shaping technique
Background technology
Metal blank is formed in the industry such as automobile, Aeronautics and Astronautics and electronics and occupies an important position, and is also more and more higher to the requirement of dimensional accuracy, surface quality, complex-shaped degree and the forming limit of sheet forming spare.Research can overcome the deficiency of common process, and has that molding is simple, the cycle is short, cost is low, can improve the new technology of sheet forming performance, has become the main direction of studying of present sheet forming research.
Plate flexible die forming technology provides effective way for solving these technical barriers.In the plate half-module shaping technique, it is the hydroforming of power transmission medium that the half module of cold conditions is formed with water (emulsion) or oil, is that the half module of power transmission medium is shaped with the solid elastomer, is the half module shaping etc. of power transmission medium with the cohesive material.The appearance of these technologies has promoted the development of sheet forming technology, but also exists many deficiencies.Hydroforming is characterized in that pressure distribution is even, but equally distributed pressure and be unfavorable for control to drip molding thickness in case local attenuation appears in the somewhere material in the forming process, will very easily produce in weakened section and break.Simultaneously, because sealing control difficulty must be taked forced seal, material is flowed be restricted in the hydroforming process, restricted the performance of the sheet forming limit greatly.When being shaped failure, fluid splashes, and contaminated environment jeopardizes the operator.In addition, the fluid that piece surface adheres to needs to increase the operation of deoiling.Be shaped with the half module of cohesive material as the power transmission medium, can not realize pressure control easily and be difficult to shortcoming though overcome rubber, also exist control system, resisting medium and the high deficiency of mold system cost that resisting medium needs the better seal environment, needs more complicated the part Accurate Shaping.
The solid particle medium New Forming Process is the plate half-module shaping technique that new development is in the last few years got up.Employing solid particles such as Zhao Changcai replace the effect of rigidity punch that plate is carried out the half module shaping, adopt solid particles such as diameter phi≤4mm high rigidity steel ball or natural sand as the power transmission medium; Outer shape according to part to be processed is made concave die cavity; Adopt pressure head that the solid particle transmission medium is pressurizeed; make the solid particle transmission medium produce forming pressure; make metal blank produce plastic deformation; reported patent protection successfully, its advantage is that the part forming quality is good, mould structure is simple, die cost is low, energy resource consumption is low, be beneficial to environmental protection.But there are the following problems for this technology: after rigid particles replaces punch to make sheet forming, need be together with the plate and the particle demoulding simultaneously, and then carry out the shaping of next process, place plate, add particle, thereby improved production cycle and labour intensity greatly, also be unfavorable for the automatic industrial production of this technology simultaneously; Because die is difficult to processing than punch, the part die of complicated shape still need carry out die cavity processing simultaneously, thereby the reduction of Mould Machining cost also is subjected to certain limitation.
Summary of the invention
In order to overcome the deficiency that solid particle or powder replace punch half module forming technique to exist; the present invention proposes a kind of metal blank rigid particles or compressible powder half-module New Forming Process; adopt solid particle or compressible powder to carry out sheet forming as concave die cavity; both need not the concave die cavity of machining shape complexity; need not every shaping again and once all add particle or powder again, help reducing production costs and raising labour productivity.
The technical solution adopted for the present invention to solve the technical problems is: this metal blank rigid particles or compressible powder half-module New Forming Process, and its moulding process is as follows:
(1) according to the shape and size of shaping plate part, the design processing and manufacturing goes out mould punch 1;
(2) casing 4 of design is put into casing 4 with rigid solid particle 5 or compressible powder 6, and compressible powder 6 can add the pressure of 10~30MPa in advance;
(3) plate 3 is placed on the casing 4, pushes down plate 3, prevent that plate 3 is wrinkling with blank holder 2;
(4) punch 1 moves downward under the effect of pressure P, and rigid solid particle 4 obtains the die shape by motion, or compressible powder 6 is compressed and obtains the die shape, thereby makes sheet forming.
(5) punch 1 backhaul, the ejecting mechanism on the punch 1 eject part or directly take off part from casing 4, carry out next part forming again.
(6) if in the casing 4 dress be rigid solid particle 5, then after punch 1 backhaul, particle automatically resets; If compressible powder 6 then can carry out next part forming by the method for adding a certain amount of powder once more, or adopt stirring or shaking device that powder is scattered.
The invention has the beneficial effects as follows, can improve the forming limit of plate, help shaping of complicated shape part, reduced the cost of Mould Machining, improved production efficiency, help realizing automated production.
Description of drawings
Fig. 1 is the schematic diagram that the rigid solid particle replaces the die forming technology before the pressurization;
Fig. 2 is the schematic diagram that pressurization back rigid solid particle replaces the die forming technology;
Fig. 3 is the schematic diagram that compressible powder replaces mould die forming technology before the pressurization;
Fig. 4 is the schematic diagram that the compressible powder in pressurization back replaces mould die forming technology.
In Fig. 1, Fig. 2,1. mould punch, 2. blank holder, 3. plate, 4. casing, 5. rigid solid particle, 6. compressible powder.
The specific embodiment
Embodiment 1
A. designing a diameter is Φ 50mm, highly is the cylindrical die punch 1 of 100mm; Designing an internal diameter is Φ 62mm, and external diameter is Φ 200mm, highly is the casing 4 of the rigid solid particle of packing into of 100mm; Blank holder 2 internal diameters are Φ 52mm, and external diameter is Φ 150mm, and thickness is 30mm.
B. adding diameter in the casing 4 is the rigid solid particle 5 (steel ball) of 2mm, packs into highly to be 40mm.
C. be that Φ 200mm, thickness are 08 steel plate of 0.8mm with diameter, be placed on the casing 4 of the rigid solid particle 5 (steel ball) of packing into, load the pressure-pad-force of 2MPa for blank holder 2.
Load 5000~10000N d. for mould punch 1, when rigid solid particle 5 was full of whole concave die cavity, the cylindrical member pull and stretch was finished.
E. after 1 backhaul of mould punch, eject part, rigid solid particle 5 automatically resets, and carries out next part forming.
Embodiment 2
A. designing a diameter is Φ 50mm, highly is the cylindrical die punch 1 of 100mm; Designing an internal diameter is Φ 62mm, and external diameter is Φ 200mm, highly is the casing 4 of the compressible powder 6 of packing into of 100mm; Blank holder 2 internal diameters are Φ 52mm, and external diameter is Φ 150mm, and thickness is 30mm.
B. add compressible powder 6 in casing 4, compressible powder 6 adds the pressure of 15MPa in advance, packs into highly to be 40mm.
C. be that Φ 200mm, thickness are 08 steel plate 3 of 0.8mm with diameter, be placed on the casing 4 of the compressible powder 6 of packing into, load the pressure-pad-force of 2MPa for blank holder 2.
Load 5000~10000N d. for mould punch 1, when compressible powder 6 was full of whole concave die cavity, the cylindrical member pull and stretch was finished.
E. eject part, add the method for a certain amount of compressible powder 6 once more and carry out next part forming, or adopt stirring or shaking device that compressible powder 6 is scattered, precharge pressure carries out next part forming again.

Claims (3)

1. a metal blank rigid particles or compressible powder half-module shaping technique, it is characterized in that: described half-mould forming process for metal plate material step is as follows:
A. according to the shape and size of shaping plate part, the design processing and manufacturing goes out mould punch (1);
B. design a casing (4), rigid solid particle (5) or compressible powder (6) are put into casing (4);
C. plate (3) is placed on the casing (4), it is wrinkling to prevent plate (3) to push down plate (3) with blank holder (2);
D. mould punch (1) moves downward under the effect of pressure P, and rigid solid particle (5) obtains the die shape by motion; Perhaps compressible powder (6) is compressed and obtains the die shape, thereby plate (3) is shaped;
E. mould punch (1) backhaul, the ejecting mechanism on the mould punch (1) eject part or directly take out part from casings (4), carry out next part forming again.
2. metal blank rigid particles according to claim 1 or compressible powder half-module shaping technique is characterized in that: add compressible powder (6) in the casing (4), add the pressure of 10~30MPa in advance.
3. metal blank rigid particles according to claim 1 and 2 or compressible powder half-module shaping technique; it is characterized in that: the compressible powder (6) of packing in the casing (4); add a certain amount of compressible powder (6) once more and carry out next part forming, perhaps adopt stirring or shaking device that compressible powder (6) is scattered.
CNA2008100550203A 2008-05-29 2008-05-29 Sheet metal rigid particles or compressible powder half-module shaping technique Pending CN101306448A (en)

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Application Number Priority Date Filing Date Title
CNA2008100550203A CN101306448A (en) 2008-05-29 2008-05-29 Sheet metal rigid particles or compressible powder half-module shaping technique

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Application Number Priority Date Filing Date Title
CNA2008100550203A CN101306448A (en) 2008-05-29 2008-05-29 Sheet metal rigid particles or compressible powder half-module shaping technique

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CN101306448A true CN101306448A (en) 2008-11-19

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101837409A (en) * 2010-06-30 2010-09-22 重庆理工大学 Rigid and flexible combined forming die based on solid particle medium
CN102249690A (en) * 2011-04-26 2011-11-23 燕山大学 Aluminum nitride ceramic material molten rapidly at low temperature and molding method thereof
CN102581106A (en) * 2012-03-08 2012-07-18 深圳大学 Miniature sheet-metal part drawing method
CN104624767A (en) * 2014-12-16 2015-05-20 深圳大学 Forming method of large-deep-drawing-ratio micro-deep-drawn part
CN104785600A (en) * 2013-06-28 2015-07-22 朱保生 Die work method
CN105290229A (en) * 2013-06-28 2016-02-03 吴红平 Work method of composite die
CN109013816A (en) * 2018-08-13 2018-12-18 吉林大学 A kind of uniform spinning titanium or titanium alloy Board Forming process of cluster steel ball half module
CN112170608A (en) * 2020-09-10 2021-01-05 平高集团有限公司 Part deep drawing forming method and forming die
CN112642930A (en) * 2020-12-11 2021-04-13 武汉理工大学 Electromagnetic composite forming method for oblique flange box-shaped part
CN113118309A (en) * 2021-04-13 2021-07-16 陕西科技大学 Method and device for friction-assisted riveting of ultrathin sheet

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101837409A (en) * 2010-06-30 2010-09-22 重庆理工大学 Rigid and flexible combined forming die based on solid particle medium
CN102249690A (en) * 2011-04-26 2011-11-23 燕山大学 Aluminum nitride ceramic material molten rapidly at low temperature and molding method thereof
CN102249690B (en) * 2011-04-26 2013-03-27 燕山大学 Aluminum nitride ceramic material molten rapidly at low temperature and molding method thereof
CN102581106A (en) * 2012-03-08 2012-07-18 深圳大学 Miniature sheet-metal part drawing method
CN104785600A (en) * 2013-06-28 2015-07-22 朱保生 Die work method
CN105290229A (en) * 2013-06-28 2016-02-03 吴红平 Work method of composite die
CN104624767A (en) * 2014-12-16 2015-05-20 深圳大学 Forming method of large-deep-drawing-ratio micro-deep-drawn part
CN109013816A (en) * 2018-08-13 2018-12-18 吉林大学 A kind of uniform spinning titanium or titanium alloy Board Forming process of cluster steel ball half module
CN112170608A (en) * 2020-09-10 2021-01-05 平高集团有限公司 Part deep drawing forming method and forming die
CN112642930A (en) * 2020-12-11 2021-04-13 武汉理工大学 Electromagnetic composite forming method for oblique flange box-shaped part
CN112642930B (en) * 2020-12-11 2021-12-03 武汉理工大学 Electromagnetic composite forming method for oblique flange box-shaped part
CN113118309A (en) * 2021-04-13 2021-07-16 陕西科技大学 Method and device for friction-assisted riveting of ultrathin sheet

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Open date: 20081119