CN102641934B - Forming method for cylindrical shell piece with flanged holes - Google Patents
Forming method for cylindrical shell piece with flanged holes Download PDFInfo
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- CN102641934B CN102641934B CN201210116656.0A CN201210116656A CN102641934B CN 102641934 B CN102641934 B CN 102641934B CN 201210116656 A CN201210116656 A CN 201210116656A CN 102641934 B CN102641934 B CN 102641934B
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- flanging bore
- cylindrical shell
- circular cylindrical
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Abstract
The invention relates to a forming method for a cylindrical shell piece with flanged holes, which is manufactured and invented to aim at a fuel tank of an airplane. The forming method for the cylindrical shell piece with flanged holes comprises the steps of paving and pasting a rubber pad on the outer side of an element to form a combined body, forming the combined body by rolling and bending, correcting the shape of the element and the flanged holes through a detachable combined type tire, and resolving the combined type tire after the correction. The forming method avoids the interference phenomenon of the element and a die during the disassembly, thus the element can not transform after being disassembled, and the unnecessary correcting processes are reduced.
Description
Technical field
The present invention relates to Sheet Metal Forming Technology field, is mainly the manufacturing process for fuel tanker Shell-Class sheet metal part.
Background technology
In airplane parts, circular cylindrical shell part with flanging bore is usually used in all kinds of fuel tanker shells, at the bottom of such part and case lid, case, a plurality of weld parts such as aircraft conduit are assembled into fuel tank assembly, be used for storing lubricating oil, hydraulic pressure wet goods liquid medium, in fuel tanker assembly, very typical with the circular cylindrical shell part of flanging bore.
This type of design of part is complicated, and forming process is in the past: the oval flanging bore → hydroforming reinforcement of first hand finishing, the progressive curling part of surrounding crimp → craft become the manual flanging bore of proofreading and correct of cylinder → on finishing die to make it pattern → unload by force part → again proofread and correct part flanging bore → cutting flanging bore profile → by straightening die correction External Shape from finishing die.The tradition forming process production cycle is long, labour intensity is large, surface quality of workpieces is poor, physical dimension is unstable, and the phenomenon of doing over again happens occasionally, and criticizes to produce bring very large difficulty to part.Concrete difficult point is as follows:
First, curling from sheet material is that cylinder is very difficult.Cylinder two ends all has one week crimp, barrel along the circumferential direction has many reinforcements, reinforcement and termination crimp have also increased greatly the curling difficulty of part when strengthening detail rigidity, also have a plurality of flanging bores on barrel in addition, manual progressive curling very difficult.
Secondly, flanging bore is shaped difficult.On part barrel, along rotating shaft normal direction, have all different special circular flanging bores of a plurality of sizes, position, part be oval while launching, and after part is curling, is circle.The oval flanging bore that must first be shaped, then curling is circular flanging bore, then with the manual flanging bore pattern of proofreading and correct of finishing die, because rust-preventing aluminum alloy plasticity is poor, after being repeatedly shaped, material flow harden phenomenon is serious, flanging bore school shape is very difficult.
The 3rd, after part forming, from mould, inloading part is difficult.Because part is closed cylinder, and flanging bore is distributed on diverse location, and part is proportionately after contour forming, the convex mouth laminating of flanging bore and mould, and while unloading part, flanging bore and finishing die convex mouth interfere, and cause inloading part very difficult.After part being unloaded from mould by force, flanging bore size distortion is serious, must carry out proofreading and correct without mould, and the geometric accuracy of flanging bore and surface quality are reduced.
Therefore, the speak out of turn shaping, the inloading part after being shaped in curling, barrel upper overturning hole of housing part of cylinder is the key factor that affects part product quality and production efficiency.
Object of the present invention is intended to overcome above difficulty, has improved part quality and production efficiency.
Summary of the invention
The invention discloses a kind of circular cylindrical shell part forming method with flanging bore, in order to solve part forming difficulty, inloading part difficulty, the poor problem of surface quality, improve part production efficiency and product quality, meet fuel tank matching requirements.
A circular cylindrical shell part forming method with flanging bore, is characterized in that comprising following steps: by blank forming, be 1) deployed condition with the circular cylindrical shell part of flanging bore; 2) paving valve rubber outside part, forms an assembly that thickness is identical; 3) assembly is carried out to roll forming, making part curling is cylinder; 4) curling part cover is received on combined tire, and with fastening clips, part and combined tire are fixed, use combined tire to proofread and correct External Shape and flanging bore; 5) decomposition and combination type tire unloads part, by drawing, checks spare part outside measurement, and part is slightly revised.
Described combined tire is combined by base and the shaping piece, the back-up block that connect circular cylindrical shell part two ends, and shaping piece is positioned at the both sides of back-up block, and back-up block can the slide combination or decompose of piece that is relatively shaped, is provided with the pattern of flanging bore in the outside of shaping piece.
Manufacturing process of the present invention, compares with traditional manufacturing process, mainly contains the large improvement in two places: the first, by the progressive curling roller bed roll forming that changes into of craft, greatly reduce operator's labour intensity, and improve the curling efficiency of part and quality.Make special eraser pad, make it with hydroforming after part fit completely, form the assembly of equal thickness, assembly is carried out to roll forming on three beaming roller beds, making part curling is cylinder; The second, with combined tire, replace original finishing die and straightening die, simplify the forming process of part, make part unload no longer difficulty from mould.After part is curling, on combined tire, carrying out profile correction and flanging bore proofreaies and correct, after correction completes, combined tire is decomposed, while having avoided inloading part, part and mould interfere phenomenon, therefore after inloading part, part can not deform, the problem that has solved inloading part difficulty, has reduced again unnecessary correcting process.
The advantage of above-mentioned processing method is, reduced the fixture for forming of circular cylindrical shell part, simplified forming process, the curling difficulty of part, flanging bore shaping difficulty, the difficult problem of inloading part have been solved, also reduced operator's labour intensity simultaneously, the production efficiency that has significantly improved this type of part, has guaranteed product quality.
Below in conjunction with embodiment and accompanying drawing, this invention is further described.
Accompanying drawing explanation:
The circular cylindrical shell part schematic diagram of Fig. 1 band flanging bore.
The circular cylindrical shell part section schematic diagram of Fig. 2 band flanging bore.
The circular cylindrical shell part of Fig. 3 band flanging bore launches schematic diagram.
The circular cylindrical shell part roll forming schematic diagram of Fig. 4 band flanging bore.
The combined tire structural representation of Fig. 5.
The combined tire of Fig. 6 is proofreaied and correct part schematic diagram.
When the combined tire of Fig. 7 decomposes inloading part, back-up block takes out schematic diagram.
The piece that is shaped during the combined tire decomposition of Fig. 8 inloading part takes out schematic diagram.
Number description: the 1 circular cylindrical shell part with flanging bore, 2 reinforcements, 3 termination crimps, 4 butt welds, 5 first flanging bores, 6 second flanging bores, 7 the 3rd flanging bores, 8 special eraser pads, 9 roll shafts, 10 left shaping pieces, 11 back-up blocks, 12 right shaping pieces, 13 fastening clips, 14 bases
Specific embodiment
The typical case of take below describes as example with the circular cylindrical shell part of flanging bore.
Referring to accompanying drawing, Fig. 1 is the cylinder housing part schematic diagram of speaking out of turn.According to the structural design of aircraft, circular cylindrical shell part is manufactured by rustproof aluminum alloy sheet material, with at the bottom of case lid, case, a plurality of weld parts such as conduit are assembled into fuel tank assembly.Part has a butt weld 4 in the high direction of cylinder, barrel along the circumferential direction has reinforcement 2, all not identical special circular the first flanging bore 5, the second flanging bore 6, the 3rd flanging bore 7(be as shown in Figure 2 along cylinder rotating shaft normal direction, to have position, a size), for the docking of fuel tank and oil pipe, cylinder two ends and weld edge have crimp 3.For the shaping of this part, shaping and the inloading part after shaping curling, flanging bore of cylinder are that the present invention endeavours the problem solving.
First, by blank forming, be the sheet metal component (as shown in Figure 3) under circular cylindrical shell part deployed condition.Because part surrounding crimp is too little, need add blank material under process allowance by launching model surrounding, make the expansion hole of flanging bore.On concora crush mould, oval-shaped the first flanging bore 5 of manual preform, the second flanging bore 6, the 3rd flanging bore 7, prevent that hydroforming from cracking.Then go up hydraulic press hydroforming reinforcement 2, crimp 3 and flanging bore, surplus the sanding edge of cutting crimp 3.
Secondly, by part roll forming, be cylinder.Make special eraser pad 8, on valve rubber, system is hidden groove and hole, and valve rubber and part outer panel face are fitted completely, the assembly that forms an equal thickness, assembly is carried out on three beaming roller beds to roll bending (as shown in Figure 4), by the adjustment of roll shaft 9, substep becomes drum by part roll bending.
The 3rd, use combined tire (as shown in Figure 5) to proofread and correct External Shape and flanging bore.Part roll bending becomes after cylinder, part is set on combined tire, and with fastening clips 13, part and combined tire is fixed, the manual part circularity of proofreading and correct, with left shaping piece 10, right shaping piece 12, proofread and correct respectively each flanging bore (as shown in Figure 6), make it pattern and draw flanging bore trim line.
Above-mentioned combined tire is combined by left shaping piece 10, back-up block 11 and the right shaping piece 12 at base 14 and perforation circular cylindrical shell part two ends, the both sides of back-up block 11 are plane, can between adjacent shaping piece, extract out, in the outside of left shaping piece 10, be provided with the pattern of the first flanging bore 5 and the second flanging bore 6, on right shaping piece 12, be provided with the pattern of the 3rd flanging bore 7.
The 4th, decomposition and combination type tire unloads part (as shown in Figure 7, Figure 8).After part is proofreaied and correct, first fastening clips 13 is taken off, again back-up block 11 is taken out to (as shown in Figure 7), then right shaping piece 12 is moved to rear taking-up (as shown in Figure 8) in the middle of base 14, again left shaping piece 10 is moved and taken out in the middle of base 14, part unloads (as shown in Figure 2) completely from mould.
Finally, by line cutting flanging bore profile, sanding part edge, checks spare part outside measurement by drawing, and part is slightly revised.
Claims (2)
1. with a circular cylindrical shell part forming method for flanging bore, it is characterized in that comprising following steps: by blank forming, be 1) deployed condition with the circular cylindrical shell part of flanging bore; 2) paving valve rubber outside part, forms an assembly that thickness is identical; 3) assembly is carried out to roll forming, making part curling is cylinder; 4) curling part cover is received on combined tire, and with fastening clips, part and combined tire are fixed, use combined tire to proofread and correct External Shape and flanging bore; 5) decomposition and combination type tire unloads part, by drawing, checks spare part outside measurement, and part is slightly revised.
2. the circular cylindrical shell part forming method with flanging bore as claimed in claim 1, it is characterized in that described combined tire is combined by shaping piece, the back-up block at base and perforation circular cylindrical shell part two ends, shaping piece is positioned at the both sides of back-up block, back-up block can the slide combination or decompose of piece that is relatively shaped, is provided with the pattern of flanging bore in the outside of shaping piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210116656.0A CN102641934B (en) | 2012-04-19 | 2012-04-19 | Forming method for cylindrical shell piece with flanged holes |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210116656.0A CN102641934B (en) | 2012-04-19 | 2012-04-19 | Forming method for cylindrical shell piece with flanged holes |
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| CN102641934A CN102641934A (en) | 2012-08-22 |
| CN102641934B true CN102641934B (en) | 2014-03-19 |
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| CN201210116656.0A Active CN102641934B (en) | 2012-04-19 | 2012-04-19 | Forming method for cylindrical shell piece with flanged holes |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104439968A (en) * | 2014-11-24 | 2015-03-25 | 首都航天机械公司 | Integral manufacturing method for tube section of large storage box based on numerical control mirror milling |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104511943A (en) * | 2013-09-30 | 2015-04-15 | 哈尔滨飞机工业集团有限责任公司 | Trimming method of edge sealing frame type part hydraulically formed based on a rubber bladder |
| CN104138960B (en) * | 2014-06-27 | 2016-07-06 | 中航飞机股份有限公司西安飞机分公司 | A kind of side band turns up the manufacturing process of flute profile sheet metal part of lateral opening and crimp |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE2364223C3 (en) * | 1973-12-22 | 1978-04-27 | Skf Kugellagerfabriken Gmbh, 8720 Schweinfurt | Process for the production of concentric machine elements |
| JP2736684B2 (en) * | 1989-07-14 | 1998-04-02 | 日本碍子株式会社 | Method of manufacturing curved enamel panel |
| JP3589212B2 (en) * | 2001-09-21 | 2004-11-17 | 株式会社大同機械製作所 | Metal sheet bending machine |
| CN201231287Y (en) * | 2008-05-27 | 2009-05-06 | 西安飞机工业（集团）有限责任公司 | Split type conduit supporting plug |
| JP5713309B2 (en) * | 2010-06-21 | 2015-05-07 | 株式会社テクノクラーツ | Undercut processing mechanism |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104439968A (en) * | 2014-11-24 | 2015-03-25 | 首都航天机械公司 | Integral manufacturing method for tube section of large storage box based on numerical control mirror milling |
| CN104439968B (en) * | 2014-11-24 | 2015-08-12 | 首都航天机械公司 | A kind of large-scale tank cylinder section integral manufacturing method based on the milling of numerical control mirror image |
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| CN102641934A (en) | 2012-08-22 |
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