CN101318205A - Circumferential nature supercharging plate liquid filling deep-drawing forming method and apparatus - Google Patents
Circumferential nature supercharging plate liquid filling deep-drawing forming method and apparatus Download PDFInfo
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- CN101318205A CN101318205A CNA2008101242905A CN200810124290A CN101318205A CN 101318205 A CN101318205 A CN 101318205A CN A2008101242905 A CNA2008101242905 A CN A2008101242905A CN 200810124290 A CN200810124290 A CN 200810124290A CN 101318205 A CN101318205 A CN 101318205A
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Abstract
The invention relates to a hydro-mechanical deep drawing and forming method for a circumferential natural-boosting sheet and a device thereof and belongs to the special technical equipment of hydro-mechanical deep drawing and reversed drawing of the sheet. The method comprises the following steps: a die cavity of a concave mold which is also used as a liquid bath is filled with liquid; the sheet is formed by reverse pressure which is established after the sheet is driven into the concave mold by a punch; by using liquid bath pressure generated when the punch moves downwards, a high pressure which is higher than the liquid bath pressure and is generated by a boosting piston is applied to the radical direction of the sheet blank, thus realizing the hydro-mechanical deep drawing or reversed drawing of circumferential natural-boosting. The device is characterized in that the die cavity of the concave mold which is also used as the liquid bath is connected with a low-pressure end of the boosting piston, and the circumferential die cavity of the sheet blank is connected with a high-pressure end of the boosting piston. The method and the device of the invention have the advantages of simple structure, low manufacturing cost and good boosting effect.
Description
Technical field:
Circumferential nature supercharging plate liquid filling deep-drawing forming method of the present invention and equipment belong to plate liquid filling deep-drawing and reverse drawing special technology equipment.
Background technology
The hydro-mechanical drawing technology is a kind of advanced person's a plate hydroforming technology, is to be full of liquid (water or oil) in die is held concurrently the die cavity of liquid pool, utilizes punch (drive plate) to enter the buffer brake of setting up behind the die and makes the method for sheet forming.Compare with plate tradition method for drawing, the hydro-mechanical drawing technology has significant advantage, obtains concern more and more widely in automobile, aviation, electron trade.Along with the hydro-mechanical drawing Study on Technology is deepened continuously, various improved hydro-mechanical drawing technology and equipments constantly occur, circumferentially hydraulic pressure hydro-mechanical drawing technology is exactly wherein a kind of, studies show that the hydraulic radial of flange periphery can significantly improve the Limit Drawing ratio of plate.Its blank flange radial pressure generally obtains by two kinds of approach, and the first, as shown in Figure 1, realize radially pressurization by die cavity and the fluid communication in the liquid pool with the flange place, this kind method radial pressure and liquid pool pressure equate; The second, as shown in Figure 2, give flange periphery to be higher than the pressure of liquid pool pressure by hydraulic system independently.
First method can only obtain the pressure equal with liquid pool pressure; Though second method can realize being higher than the pressure of liquid pool pressure, need independently hydraulic system, device fabrication cost and part production cost are all higher.
Summary of the invention
The object of the invention is, provides a kind of simple in structure, low cost of manufacture, circumferential nature supercharging plate liquid filling deep-drawing forming method that pressurized effect is good and equipment.
1, a kind of circumferential nature supercharging plate liquid filling deep-drawing forming method comprises following process:
(1), in die is held concurrently the die cavity of liquid pool, be full of liquid,
(2), utilizing punch to drive plate enters the buffer brake of setting up behind the die and makes sheet forming, it is characterized in that also comprising following process:
(3), utilize the liquid pool pressure of the descending generation of punch, produce the high pressure that is higher than liquid pool pressure by a charged piston and be applied to the plate blank radially, thereby realize the hydro-mechanical drawing or the reverse drawing of circumferential nature supercharging.
2, a kind of circumferential nature supercharging plate liquid filling deep-drawing forming equipment, comprise die hold concurrently liquid pool, punch, blank holder, wherein blank holder and die are held concurrently and are the plate space between the liquid pool, it is characterized in that: the die liquid pool die cavity of holding concurrently links to each other with the charged piston low-pressure end, and the circumferential die cavity of plate blank links to each other with the charged piston high-pressure side.
This technology can realize that radial pressure is higher than the hydro-mechanical drawing of liquid pool pressure, but does not need special high pressure pumping station system, thereby reduces the manufacturing cost of part greatly.
Description of drawings
Fig. 1 is traditional circumferential hydraulic pressure hydro-mechanical drawing technical schematic diagram.
Fig. 2 is the circumferential hydraulic pressure hydro-mechanical drawing technical schematic diagram with independent pumping plant.
Fig. 3 is that the present invention is circumferentially to the schematic diagram of nature supercharging hydro-mechanical drawing method.
Fig. 4 is that the present invention is circumferentially to nature supercharging topping up and reverse drawing method schematic diagram.
The specific embodiment
The present invention realizes that dual path that flange circumferential pressure nature supercharging and radial pressure are higher than liquid pool pressure loads the hydro-mechanical drawing method and is:
Be about to make liquid pool pressure to be compressed under the punch and the pressure rising, the liquid capacity in the liquid pool will reduce Δ l simultaneously
1, be about to Δ l
1The liquid of volume flows out in liquid pool: in the die cavity of blank flange, because plate will be increased Δ l by its mold cavity volume of pull and stretch
2According to mould structure and shaping characteristic Δ l
1＞＞Δ l
2The piston rod of a two ends different cross-sectional is embedded in the die cavity on the mould correct position (or designing special booster), liquid in the liquid pool and the piston large tracts of land end face that is contained in the mould are linked, simultaneously flange die cavity and piston small end face die cavity are linked.Can realize that by the different piston of two end sections the radial pressure that is higher than liquid pool pressure loads.
Relation according to liquid pool mold cavity volume in the hydro-mechanical drawing process and the variation of blank flange peripheral type cavity volume designs suitable booster, and the low-pressure cavity of hydro-mechanical drawing liquid pool die cavity and booster is linked, and the high pressure chest of booster and flange periphery chamber link.The descending drive plate of punch die enters die, liquid is squeezed and enters booster low-pressure chamber in the liquid pool, through the conversion of booster, will obtain being higher than the pressure of liquid pool liquid at the blank flange periphery, this radial pressure helps sheet forming, can improve sheet forming Limit Drawing ratio.
The plate blank is packed in the mould, after the mould closure, at first start the pre-pump that expands and make in the liquid pool and mold periphery is full of hydraulic medium, and in liquid pool, produce certain pre-swelling pressure power; Close the pre-pump that expands then, punch begins descending, liquid in the extruding liquid pool, and medium pressure liquid raises in the liquid pool, and its maximum pressure is controlled by overflow valve; Simultaneously, the liquid pool internal pressure produces the radial pressure that is several times as much as liquid pool pressure by booster at blank flange edge chamber, and the thrust that this pressure produces helps material forming; Part forming finishes, the punch die backhaul, and mold open, material jacking mechanism ejects product; By compressed-air actuated pressure booster is resetted; Mould resets; A production flow process is finished.
Topping up reverse drawing process and hydro-mechanical drawing similar process, difference is that its reverse drawing blank is a cup shell, its cup-shaped blank can traditional pull and stretch or hydro-mechanical drawing acquisition.
Claims (2)
1, a kind of circumferential nature supercharging plate liquid filling deep-drawing forming method comprises following process:
(1), in die is held concurrently the die cavity of liquid pool, be full of liquid,
(2), utilize punch to drive plate to enter the buffer brake of setting up behind the die and make sheet forming,
It is characterized in that also comprising following process:
(3), utilize the liquid pool pressure of the descending generation of punch, produce the high pressure that is higher than liquid pool pressure by a charged piston and be applied to the plate blank radially, thereby realize the hydro-mechanical drawing or the reverse drawing of circumferential nature supercharging.
2, a kind of circumferential nature supercharging plate liquid filling deep-drawing forming equipment, comprise die hold concurrently liquid pool, punch, blank holder, wherein blank holder and die are held concurrently and are the plate space between the liquid pool, it is characterized in that: the die liquid pool die cavity of holding concurrently links to each other with the charged piston low-pressure end, and the circumferential die cavity of plate blank links to each other with the charged piston high-pressure side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101242905A CN101318205B (en) | 2008-06-24 | 2008-06-24 | Circumferential nature supercharging plate liquid filling deep-drawing forming method and apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101242905A CN101318205B (en) | 2008-06-24 | 2008-06-24 | Circumferential nature supercharging plate liquid filling deep-drawing forming method and apparatus |
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| CN101318205A true CN101318205A (en) | 2008-12-10 |
| CN101318205B CN101318205B (en) | 2010-06-02 |
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| CN2008101242905A Expired - Fee Related CN101318205B (en) | 2008-06-24 | 2008-06-24 | Circumferential nature supercharging plate liquid filling deep-drawing forming method and apparatus |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102632125A (en) * | 2012-04-01 | 2012-08-15 | 首钢总公司 | Plate differential temperature hydroforming device capable of realizing radial pressurizing and hydraulic blank pressing |
| CN105522029A (en) * | 2016-01-06 | 2016-04-27 | 北京航空航天大学 | Universal device of high-pressure liquid chamber for hydraulic forming of plates |
| CN105710218A (en) * | 2016-04-01 | 2016-06-29 | 中航飞机股份有限公司西安飞机分公司 | Flexible stamping mould and stamping method for plate half tube |
| CN109175059A (en) * | 2018-10-10 | 2019-01-11 | 江苏新阳光管业科技有限公司 | Risen the method for processing groove inner liner stainless steel elbow using water |
| CN110090887A (en) * | 2019-04-09 | 2019-08-06 | 哈尔滨理工大学 | A kind of liquid filling deep-drawing forming circumferential direction pressure method based on numerical simulation |
| CN110860598A (en) * | 2019-11-28 | 2020-03-06 | 哈尔滨理工大学 | Method for improving warm hydromechanical deep drawing forming die attaching performance through active radial pressurization |
| CN111167915A (en) * | 2020-01-12 | 2020-05-19 | 哈尔滨理工大学 | Method for improving bottom forming precision of complex three-dimensional thin-wall part |
| CN113732154A (en) * | 2021-09-18 | 2021-12-03 | 中航西安飞机工业集团股份有限公司 | Two-time deep drawing forming method for long annular lip with deep U-shaped cross section and beak-shaped middle part |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140020534A1 (en) * | 2012-07-17 | 2014-01-23 | National Taiwan Ocean University | Fine hydro-blanking device |
Family Cites Families (4)
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| CN100503073C (en) * | 2005-06-21 | 2009-06-24 | 北京航空航天大学 | Plate materials composite forming method |
| CN1693066A (en) * | 2005-06-21 | 2005-11-09 | 北京航空航天大学 | Process for forming multilayer slab |
| CN1895805A (en) * | 2005-07-14 | 2007-01-17 | 北京石油化工学院 | Method and device for drawing magnesium-alloy plate by low-temperature liquid-filling method |
| CN100537074C (en) * | 2007-09-24 | 2009-09-09 | 哈尔滨工业大学 | Device for preventing suspension area from breaking while taper piece filling liquid and drawing deep forming and forming method |
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2008
- 2008-06-24 CN CN2008101242905A patent/CN101318205B/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102632125A (en) * | 2012-04-01 | 2012-08-15 | 首钢总公司 | Plate differential temperature hydroforming device capable of realizing radial pressurizing and hydraulic blank pressing |
| CN105522029A (en) * | 2016-01-06 | 2016-04-27 | 北京航空航天大学 | Universal device of high-pressure liquid chamber for hydraulic forming of plates |
| CN105710218A (en) * | 2016-04-01 | 2016-06-29 | 中航飞机股份有限公司西安飞机分公司 | Flexible stamping mould and stamping method for plate half tube |
| CN105710218B (en) * | 2016-04-01 | 2017-09-29 | 中航飞机股份有限公司西安飞机分公司 | A kind of flexible diel of plate semicanal and process for stamping |
| CN109175059A (en) * | 2018-10-10 | 2019-01-11 | 江苏新阳光管业科技有限公司 | Risen the method for processing groove inner liner stainless steel elbow using water |
| CN110090887A (en) * | 2019-04-09 | 2019-08-06 | 哈尔滨理工大学 | A kind of liquid filling deep-drawing forming circumferential direction pressure method based on numerical simulation |
| CN110860598A (en) * | 2019-11-28 | 2020-03-06 | 哈尔滨理工大学 | Method for improving warm hydromechanical deep drawing forming die attaching performance through active radial pressurization |
| CN110860598B (en) * | 2019-11-28 | 2021-08-06 | 哈尔滨理工大学 | Method for improving warm hydromechanical deep drawing forming die attaching performance through active radial pressurization |
| CN111167915A (en) * | 2020-01-12 | 2020-05-19 | 哈尔滨理工大学 | Method for improving bottom forming precision of complex three-dimensional thin-wall part |
| CN111167915B (en) * | 2020-01-12 | 2022-03-18 | 哈尔滨理工大学 | Method for improving bottom forming precision of complex three-dimensional thin-wall part |
| CN113732154A (en) * | 2021-09-18 | 2021-12-03 | 中航西安飞机工业集团股份有限公司 | Two-time deep drawing forming method for long annular lip with deep U-shaped cross section and beak-shaped middle part |
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| Publication number | Publication date |
|---|---|
| CN101318205B (en) | 2010-06-02 |
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Assignee: Jiangsu Xingyang Pipe Fittings Co.,Ltd. Assignor: Nanjing University of Aeronautics and Astronautics Contract record no.: 2011320000809 Denomination of invention: Circumferential nature supercharging plate liquid filling deep-drawing forming method and apparatus Granted publication date: 20100602 License type: Exclusive License Open date: 20081210 Record date: 20110610 |
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