EP0107674A1 - Verfahren zum herstellen von mit geschlossenen rippen versehenen körpern. - Google Patents
Verfahren zum herstellen von mit geschlossenen rippen versehenen körpern.Info
- Publication number
- EP0107674A1 EP0107674A1 EP19830901184 EP83901184A EP0107674A1 EP 0107674 A1 EP0107674 A1 EP 0107674A1 EP 19830901184 EP19830901184 EP 19830901184 EP 83901184 A EP83901184 A EP 83901184A EP 0107674 A1 EP0107674 A1 EP 0107674A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rib
- ribs
- notch
- folding
- head
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D13/00—Corrugating sheet metal, rods or profiles; Bending sheet metal, rods or profiles into wave form
- B21D13/02—Corrugating sheet metal, rods or profiles; Bending sheet metal, rods or profiles into wave form by pressing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
- F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
- F28F3/025—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being corrugated, plate-like elements
Definitions
- the invention relates to a method for the production of bodies provided with closed ribs from sheet metal, in which each rib is formed by folding a piece of tape of a certain length and a rib produced by the method.
- the closed rib produced by the method according to the invention is characterized by the fact that it has legs that lie over the entire height of the rib and that the rib head is practically without a rib eyelet.
- the invention is shown in the drawing in two exemplary embodiments and is described below. Show it:
- FIG. 1 is a schematic representation of a device for forming a rib from a belt section according to a known method
- FIG. 2 shows a schematic representation of the device according to FIG. 1 at the end of the formation of the closed ribs
- FIG. 3 shows a schematic representation of a device for producing a closed rib according to the method according to the invention at the beginning of the molding process
- Fig. 5 shows a schematic representation of a device according to FIGS. 3 and 4 for producing a closed rib, according to a variant of the method according to the invention at the beginning of the shaping of the rib and
- the schematically illustrated device u comprises two tensioning devices 1, 2, in which a band piece 3 of a steel band is clamped, the band section corresponding to the distance 4 between the tensioning devices 1, 2 for the formation of a closed rib 5 is used, see FIG. 2.
- FIGS. 3 and 4 similar clamping devices 1, 2 as in FIGS. 1 and 2 are used for the formation of the closed rib, but here the use of the folding sword moved transversely to the band piece can be omitted, which also means the relatively complex coordination of the Speeds of the tensioning devices 1, 2 and the folding sword are not required. It is important here that at the location of the rib head 7 that forms (Fig. 4) a notch 8 is arranged on the opposite side of the rib head 7 of the band piece 3. The arrangement of the notch 8 determines the direction of the deflection of the belt section, which is why no folding sword is used.
- Folding forces Fk. required and likewise the pressing force P to be used at the end of the folding process can be considerable, e.g. by about 40%.
- the rib width a is the same over the entire rib height and is approximately equal to twice the band thickness s, while for the formation of the rib 5 according to FIGS. 1 and 2, the rib width a on the rib head 7 is more than twice that Band strength s is.
- the radius R on the rib base is also approximately the same as the radius r on the clamping devices 1, 2.
- FIGS. 5 and 6 show a further possibility of forming a rib.
- the difference from that 3 and 4 consists in that, in addition to the notch 8 in the area of the rib head 7, two further notches 11, 12 are formed in the area of the rib foot, but on the opposite side of the notch 8. In this case too, a folding sword is no longer required.
- the arrangement of the notches 11, 12 makes the folding force even smaller than if only the notch 8 is provided.
- the pressing force P does not become significantly smaller than in FIGS. 3 and 4 and can accordingly also be approximately 40% smaller than in the embodiment according to FIGS. 1 and 2.
- the arrangement of the notches 11, 12 means that an almost sharp-edged transition arises at the base of the rib, i.e. the radius R is substantially smaller than the radius r provided on the clamping devices 1, 2.
- the deflection behavior, the folding force F, k and the pressing force P can be influenced to a considerable extent by the shape and the depth of the notches 11, 12.
- the tensioning devices 1, 2 are designed such that the band section 4 between the tensioning devices 1, 2 and the band piece 3 in the tensioning devices 1, 2 essentially form a straight line. If the clamping surfaces are slightly inclined in such a way that the band piece 3 assumes a flat roof-like shape, the deflection side for the formation of the ribs 5 is additionally defined.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Curtains And Furnishings For Windows Or Doors (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
- Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT83901184T ATE18639T1 (de) | 1982-04-30 | 1983-04-21 | Verfahren zum herstellen von mit geschlossenen rippen versehenen koerpern. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH2666/82 | 1982-04-30 | ||
CH266682A CH655259A5 (de) | 1982-04-30 | 1982-04-30 | Verfahren zum herstellen von mit geschlossenen rippen versehenen koerpern und nach dem verfahren hergestellte rippe. |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0107674A1 true EP0107674A1 (de) | 1984-05-09 |
EP0107674B1 EP0107674B1 (de) | 1986-03-19 |
Family
ID=4238841
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19830901184 Expired EP0107674B1 (de) | 1982-04-30 | 1983-04-21 | Verfahren zum herstellen von mit geschlossenen rippen versehenen körpern |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0107674B1 (de) |
JP (1) | JPS59500658A (de) |
CH (1) | CH655259A5 (de) |
CS (1) | CS244932B2 (de) |
DE (1) | DE3362582D1 (de) |
WO (1) | WO1983003784A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE9504186D0 (sv) * | 1995-11-23 | 1995-11-23 | Electrolux Ab | Förfarande för att åstadkomma ett tunnplåtsförband |
DE102007004993A1 (de) * | 2007-02-01 | 2008-08-07 | Modine Manufacturing Co., Racine | Herstellungsverfahren für Flachrohre und Walzenstraße |
WO2017144286A1 (en) * | 2016-02-23 | 2017-08-31 | Koninklijke Philips N.V. | Method of folding metal blank made of high-strenght material without cracks |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2948197A (en) * | 1958-04-25 | 1960-08-09 | Stalker Corp | Manufacture of blades |
DE1160815B (de) * | 1959-07-21 | 1964-01-09 | Hoesch Ag | Verfahren zur Herstellung von Profilen aus kaltgewalzten oder vergueteten Stahl- undNichteisenmetallbaendern |
DE1452768A1 (de) * | 1963-11-02 | 1969-06-12 | Wiesbaden Gmbh Maschf | Vorrichtung zur Herstellung des Blechmantels von Wellenkesseln fuer Transformatoren |
US3368692A (en) * | 1964-01-20 | 1968-02-13 | Coniker Entpr Inc | Pleated pocket forming method |
CH463940A (de) * | 1965-09-21 | 1968-10-15 | Luwa Ag | Verfahren und Vorrichtung zur Herstellung von Filtereinsätzen |
FR1544252A (fr) * | 1966-10-24 | 1968-10-31 | Tetra Pak Ab | Procédé de traitement d'un matériau d'emballage en feuille pourvu de lignes transversales de pliage |
US3615964A (en) * | 1968-09-20 | 1971-10-26 | Ind Insulations Inc | Method of forming creased fiber glass blanket |
SE8102351L (sv) * | 1981-04-13 | 1982-10-14 | Plannja Ab | Forfarande for att astadkomma bockning |
-
1982
- 1982-04-30 CH CH266682A patent/CH655259A5/de not_active IP Right Cessation
-
1983
- 1983-04-21 DE DE8383901184T patent/DE3362582D1/de not_active Expired
- 1983-04-21 JP JP50124483A patent/JPS59500658A/ja active Pending
- 1983-04-21 WO PCT/CH1983/000049 patent/WO1983003784A1/de active IP Right Grant
- 1983-04-21 EP EP19830901184 patent/EP0107674B1/de not_active Expired
- 1983-04-29 CS CS833056A patent/CS244932B2/cs unknown
Non-Patent Citations (1)
Title |
---|
See references of WO8303784A1 * |
Also Published As
Publication number | Publication date |
---|---|
CH655259A5 (de) | 1986-04-15 |
EP0107674B1 (de) | 1986-03-19 |
CS305683A2 (en) | 1985-09-17 |
JPS59500658A (ja) | 1984-04-19 |
CS244932B2 (en) | 1986-08-14 |
DE3362582D1 (en) | 1986-04-24 |
WO1983003784A1 (en) | 1983-11-10 |
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Legal Events
Date | Code | Title | Description |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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17P | Request for examination filed |
Effective date: 19831223 |
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AK | Designated contracting states |
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