CN105312380A - Device and method for forming flange holes in large storage box - Google Patents
Device and method for forming flange holes in large storage box Download PDFInfo
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- CN105312380A CN105312380A CN201410262237.7A CN201410262237A CN105312380A CN 105312380 A CN105312380 A CN 105312380A CN 201410262237 A CN201410262237 A CN 201410262237A CN 105312380 A CN105312380 A CN 105312380A
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Abstract
The invention discloses a device and method for forming flange holes in a large storage box, and relates to the technology of large liquid storage box manufacturing, in particular to a method for forming various flange holes in a storage box body or parts such as an end socket and a cylindrical section which form the storage box. Due to the fact that the bottom of a storage box is integrally manufactured, flange holes of the storage box are difficultly formed through an existing machining method. After spinning forming, the parts have the characteristic of being not uniform in wall thickness, and a conventional press forming method cannot adapt to the parts. According to the method for forming the flange holes in the large storage box or an overall end socket, the good forming effect on forming flange holes after the integral structure is formed and forming flange holes in the large end socket is achieved, and the problem that forming cannot be completed through the conventional method is solved.
Description
Technical field
The present invention relates to large-scale liquid tank manufacturing technology, being specifically related on tank casing or forming the part of tank as in end socket, cylinder section, processing building mortion and the method for various flanging bore.
Background technology
Carrier rocket store-vessel bottom mostly is ellipsoid or the spherical end, and due to the restriction of China's aluminum alloy materials quality and rotary pressure technology development level, the manufacture of carrier rocket store-vessel bottom still adopts the mode of part welding to complete.And the store-vessel bottom using integral spin forming technique of the Atlas series of the U.S., Japanese H2B rocket.
Store-vessel bottom entirety manufactures and causes the shaping of tank flanging bore to use existing processing method very difficult.Can complete with forcing press for the flanging bore on melon lobe and top cover, and enormous size at the bottom of overall case, generally at the diameter of 2m ~ 10m, flanging bore cannot be processed with forcing press.In addition, after mould pressing, part has the even feature of wall unevenness, and conventional press forming method also cannot be adapted to.
Along with improving constantly of requiring product reliability, capturing of forming technique at the bottom of overall case, flanging bore becomes key technology anxious to be resolved.The flanging bore proposed therefrom with magnetic pulse formation method solves at the bottom of the overall case of large-scale tank change wall thickness is shaped.
Adopt the end socket that the welding of multiple part welding method is got up, the flanging bore on it can manufacture under part status, with current capacity of equipment and technology, does not have problems.And if end socket is at the bottom of weldless overall case or area more than on the large-scale sheet metal part of 1m2, processing flanging bore structure is that conventional method is difficult to realize.Its difficult point is: (1) size is large, and pressing machine table-board is little, cannot hold the hemmer comprising shaping dies; (2) because the position multidigit of flanging bore is in departing from end socket centre, under overall tank state, the method for press forming cannot be adopted; (3) by existing manufacturing technology level, the end socket of integral spinning forming, because wall unevenness is even, makes conventional method also cannot process flanging bore.Therefore, flanging bore processing problems becomes and realizes large-scale tank integrated head key issue anxious to be resolved.
Magnetic pulse forming techniques utilizes electromagnetic principle by electric energy abrupt release after capacitor savings, and be converted into a kind of manufacturing technology that electromagnetic force makes it deform in the metal material that electric conductivity is good, there is the advantages such as high speed, large, pollution-free, the little resilience of energy, energy-saving and environmental protection.Magnetic pulse forming techniques principle: by booster transformer, voltage is brought up to 1kv ~ 20kv by the power supply of 220v or 380v, charge to Capacitor banks, then discharged by discharger, induced field is produced around online turn coil, and then induced-current is produced in test specimen, produce by the interaction in magnetic field the magnetic field force mutually repelled, make test specimen produce plastic deformation.
Summary of the invention
The object of the invention is to: building mortion and method that a kind of flanging bore on large-scale tank or integrated head is provided.
Technical scheme of the present invention is as follows: a kind of device be shaped for large-scale tank upper overturning hole, comprise former, ring flange, locating piece, alignment pin, axle, backing plate, magnetic field impulse coil, electrode connecting end, insulation grid, axle is bar-shaped major axis structure, its lower end is through support and discoid backing plate, and be set with discoid backing plate by nut A and fix, magnetic field impulse coil is arranged between part to be processed and support, the left end connecting electrode link of magnetic field impulse coil, electrode connecting end is long handle shape structure, installing insulating grid between magnetic field impulse coil and locating piece, insulation grid is enclosed in axle surrounding, locating piece is sleeved in axle, by alignment pin by fixing for part to be processed location, axle is passed ring flange and is fixed on above locating piece by nut B by ring flange, former and ring flange are concentric discs, former is positioned at outside ring flange.
Also comprise pressing plate, described pressing plate is discoid, and pressing plate through pressing plate, and is fixed by nut C by axle upper end, and pressing plate is positioned at the top of former and ring flange.
A kind of large-scale tank upper overturning hole manufacturing process, comprises the following steps
Step one: with welding method welding machining large tank, process integrated head by spin-on process;
Step 2: treating flange tank to be opened a pre-manufactured hole, the size of this pre-manufactured hole diameter is determined according to following formula,
d＝D–R(π-2)+S(2-π/2)–2H
In formula, D is flanging bore internal diameter;
R is flanging bore radius of corner;
S is for treating flange part thickness;
Н is flanging bore cylindrical section height;
D is pre-manufactured hole diameter.
Step 3: processing magnetic field impulse coil, its structure is according to the flanging bore diameter be shaped, thickness and determine, and mould employing is quenched into the common 45# steel of HRC38 ~ 42;
Step 4: successively backing plate, tray deck are sleeved in axle, locating piece, alignment pin are arranged on coil, then the side for the treatment of flange position is placed on, and electrode connecting end is connected to coil left end, insulation grid is wrapped in axle surrounding, successively mounting nuts A, ring flange, former, and fixes with nut B, finally pressing plate is installed, completes assembling with nut C is fastening.
Step 5: magnetic field impulse coil and equipment are connected, the electric discharge of magnetic field impulse equipment makes the flanging bore on tank be shaped.
Equipment discharge voltage in described step 5 at 5 ~ 20kV, discharge energy 10 ~ 25kJ, discharge time 1 ~ 2 time, magnetic field impulse equipment maximum charging voltage 20kv used, frequency 25 ~ 40kH, energy 25 ~ 50kJ.
Remarkable result of the present invention is: being shaped for the flanging bore on flanging bore processed after completing overall structure and large-sized end enclosure has good forming effect; Solve the Problems in forming that conventional method can not complete.
Accompanying drawing explanation
Fig. 1 is the device schematic diagram of large-scale tank flanging bore of the present invention
Fig. 2 is large-scale tank flanging bore and external connection structure schematic diagram
Fig. 3 is the large-scale store-vessel bottom schematic diagram of band flanging bore.
In figure: 1 pressing plate, 2 formers, 3 ring flanges, 4 locating pieces, 5 alignment pins, 6 axles, 7 backing plates, 8 nut A, 9 magnetic field impulse coils, 10 tray decks, 11 electrode connecting end, 12 insulation grid, 13 nut B, 14 nut C
Detailed description of the invention
Below in conjunction with drawings and the specific embodiments, the present invention is described in further detail.
As shown in Fig. 1 ~ Fig. 2, a kind of device be shaped for large-scale tank upper overturning hole of the present invention, comprise former 2, ring flange 3, locating piece 4, alignment pin 5, axle 6, backing plate 7, magnetic field impulse coil 9, electrode connecting end 11, insulation grid 12, wherein, axle 6 is bar-shaped major axis structure, its lower end is through support 10 and discoid backing plate 7, and it is fixing to be set with discoid backing plate 7 by nut A8, magnetic field impulse coil 9 is arranged between part to be processed and support 10, the left end connecting electrode link 11 of magnetic field impulse coil 9, electrode connecting end 11 is long handle shape structure, installing insulating grid 12 between magnetic field impulse coil 9 and locating piece 4, insulation grid 12 is enclosed in axle 6 surrounding, locating piece 4 is sleeved in axle 6, by alignment pin 5 by fixing for part to be processed location, axle 6 is passed ring flange 3 and is fixed on above locating piece 4 by nut B13 by ring flange 3, former 2 and ring flange 3 are concentric discs, former 2 is positioned at outside ring flange 3.Pressing plate 1 is discoid, and pressing plate 1 through pressing plate 1, and is fixed by nut C14 by axle 6 upper end, and pressing plate 1 is positioned at the top of former 2 and ring flange 3.
On large-scale tank of the present invention and the manufacturing process in overall head formed by spinning upper overturning hole, wherein treat flange part material be comprise 5A06,2219 various aluminium alloys, sheet metal thickness is less than 10mm, flanging bore diameter 60 ~ 250mm; It comprises the steps:
Step one: with welding method welding machining large tank, process integrated head by spin-on process;
Step 2: treating flange tank to be opened a pre-manufactured hole, the size of this pre-manufactured hole diameter is determined according to following formula,
d＝D–R(π-2)+S(2-π/2)–2H
In formula, D is flanging bore internal diameter;
R is flanging bore radius of corner;
S is for treating flange part thickness;
Н is flanging bore cylindrical section height;
D is pre-manufactured hole diameter;
Step 3: processing magnetic field impulse coil, its structure is according to the flanging bore diameter be shaped, thickness and determine, and mould employing is quenched into the common 45# steel of HRC38 ~ 42;
Step 4: successively backing plate 7, tray deck 10 are sleeved in axle 6, locating piece 4, alignment pin 5 are arranged on coil 9, then the side for the treatment of flange position is placed on, and electrode connecting end 11 is connected to coil 9 left end, insulation grid 12 is wrapped in axle 6 surrounding, successively mounting nuts A8, ring flange 3, former 2, and fixes with nut B13, finally pressing plate 1 is installed, completes assembling with nut C14 is fastening;
Step 5: magnetic field impulse coil and equipment are connected, the electric discharge of magnetic field impulse equipment makes the flanging bore on tank be shaped.Equipment discharge voltage at 5 ~ 20kV, discharge energy 10 ~ 25kJ, discharge time 1 ~ 2 time, magnetic field impulse equipment maximum charging voltage 20kv used, frequency 25 ~ 40kH, energy 25 ~ 50kJ.
Claims (4)
1. the device be shaped for large-scale tank upper overturning hole, it is characterized in that: comprise former (2), ring flange (3), locating piece (4), alignment pin (5), axle (6), backing plate (7), magnetic field impulse coil (9), electrode connecting end (11), insulation grid (12), axle (6) is bar-shaped major axis structure, its lower end is through support (10) and discoid backing plate (7), and it is fixing to be set with discoid backing plate (7) by nut A (8), magnetic field impulse coil (9) is arranged between part to be processed and support (10), the left end connecting electrode link (11) of magnetic field impulse coil (9), electrode connecting end (11) is long handle shape structure, installing insulating grid (12) between magnetic field impulse coil (9) and locating piece (4), insulation grid (12) is enclosed in axle (6) surrounding, locating piece (4) is sleeved in axle (6), by alignment pin (5) by fixing for part to be processed location, axle (6) through ring flange (3) and by nut B (13) ring flange (3) is fixed on locating piece (4) top, former (2) and ring flange (3) are concentric discs, former (2) is positioned at ring flange (3) outside.
2. a kind of device be shaped for large-scale tank upper overturning hole according to claim 1, it is characterized in that: also comprise pressing plate (1), described pressing plate (1) is for discoid, axle (6) upper end is through pressing plate (1), and by nut C (14), pressing plate (1) is fixed, pressing plate (1) is positioned at the top of former (2) and ring flange (3).
3. a large-scale tank upper overturning hole manufacturing process, is characterized in that: comprise the following steps
Step one: with welding method welding machining large tank, process integrated head by spin-on process;
Step 2: treating flange tank to be opened a pre-manufactured hole, the size of this pre-manufactured hole diameter is determined according to following formula,
d＝D–R(π-2)+S(2-π/2)–2H
In formula, D is flanging bore internal diameter;
R is flanging bore radius of corner;
S is for treating flange part thickness;
Н is flanging bore cylindrical section height;
D is pre-manufactured hole diameter.
Step 3: processing magnetic field impulse coil, its structure is according to the flanging bore diameter be shaped, thickness and determine, and mould employing is quenched into the common 45# steel of HRC38 ~ 42;
Step 4: successively by backing plate (7), tray deck (10) is sleeved in axle (6), by locating piece (4), alignment pin (5) is arranged on coil (9), then the side for the treatment of flange position is placed on, and electrode connecting end (11) is connected to coil (9) left end, the grid (12) that will insulate is wrapped in axle (6) surrounding, mounting nuts A (8) successively, ring flange (3), former (2), and fix with nut B (13), pressing plate (1) is finally installed, assembling is completed with nut C (14) is fastening.
Step 5: magnetic field impulse coil and equipment are connected, the electric discharge of magnetic field impulse equipment makes the flanging bore on tank be shaped.
4. one according to claim 4 large-scale tank upper overturning hole manufacturing process, it is characterized in that: the equipment discharge voltage in described step 5 at 5 ~ 20kV, discharge energy 10 ~ 25kJ, discharge time 1 ~ 2 time, magnetic field impulse equipment maximum charging voltage 20kv used, frequency 25 ~ 40kH, energy 25 ~ 50kJ.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410262237.7A CN105312380A (en) | 2014-06-13 | 2014-06-13 | Device and method for forming flange holes in large storage box |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410262237.7A CN105312380A (en) | 2014-06-13 | 2014-06-13 | Device and method for forming flange holes in large storage box |
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| CN105312380A true CN105312380A (en) | 2016-02-10 |
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| CN201410262237.7A Pending CN105312380A (en) | 2014-06-13 | 2014-06-13 | Device and method for forming flange holes in large storage box |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107952860A (en) * | 2017-11-03 | 2018-04-24 | 首都航天机械公司 | It is a kind of to prevent the fracture of magnetic field impulse projecting apertures fillet and thinned method |
| CN110640019A (en) * | 2019-08-26 | 2020-01-03 | 上海航天精密机械研究所 | Method for integrally forming large-diameter storage box bottom with hole flanging structure |
| CN110666044A (en) * | 2019-11-20 | 2020-01-10 | 四川航天长征装备制造有限公司 | Storage tank bottom convex hole die |
| CN110814134A (en) * | 2019-11-20 | 2020-02-21 | 四川航天长征装备制造有限公司 | Method for forming convex hole in bottom of storage box |
| CN112247484A (en) * | 2020-09-28 | 2021-01-22 | 天津航天长征火箭制造有限公司 | Heating convex hole forming method for melon petal at bottom of 2219 aluminum alloy storage box |
| CN113290353A (en) * | 2021-06-07 | 2021-08-24 | 四川航天长征装备制造有限公司 | Method for forming small-aperture flanging convex hole of aluminum alloy top cover |
| CN114770132A (en) * | 2022-06-21 | 2022-07-22 | 四川航天长征装备制造有限公司 | High-strength aluminum alloy melon petal side hole electromagnetic flanging device and method |
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| EP1380364A1 (en) * | 2002-07-09 | 2004-01-14 | Kabushiki Kaisha Kobe Seiko Sho | Method for electromagnetically forming metallic member and metallic member formed by electromagnetic forming |
| US20090272165A1 (en) * | 2008-05-05 | 2009-11-05 | Ford Global Technologies, Llc | Electrohydraulic trimming, flanging, and hemming of blanks |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107952860A (en) * | 2017-11-03 | 2018-04-24 | 首都航天机械公司 | It is a kind of to prevent the fracture of magnetic field impulse projecting apertures fillet and thinned method |
| CN110640019A (en) * | 2019-08-26 | 2020-01-03 | 上海航天精密机械研究所 | Method for integrally forming large-diameter storage box bottom with hole flanging structure |
| CN110666044A (en) * | 2019-11-20 | 2020-01-10 | 四川航天长征装备制造有限公司 | Storage tank bottom convex hole die |
| CN110814134A (en) * | 2019-11-20 | 2020-02-21 | 四川航天长征装备制造有限公司 | Method for forming convex hole in bottom of storage box |
| CN112247484A (en) * | 2020-09-28 | 2021-01-22 | 天津航天长征火箭制造有限公司 | Heating convex hole forming method for melon petal at bottom of 2219 aluminum alloy storage box |
| CN113290353A (en) * | 2021-06-07 | 2021-08-24 | 四川航天长征装备制造有限公司 | Method for forming small-aperture flanging convex hole of aluminum alloy top cover |
| CN113290353B (en) * | 2021-06-07 | 2022-07-26 | 四川航天长征装备制造有限公司 | Method for forming small-aperture flanging convex hole of aluminum alloy top cover |
| CN114770132A (en) * | 2022-06-21 | 2022-07-22 | 四川航天长征装备制造有限公司 | High-strength aluminum alloy melon petal side hole electromagnetic flanging device and method |
| CN114770132B (en) * | 2022-06-21 | 2022-10-14 | 四川航天长征装备制造有限公司 | High-strength aluminum alloy melon petal side hole electromagnetic flanging device and method |
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Application publication date: 20160210 |