ATA74794A - METHOD AND DEVICE FOR BENDING HOLLOW PROFILE WORKPIECES - Google Patents

METHOD AND DEVICE FOR BENDING HOLLOW PROFILE WORKPIECES

Info

Publication number
ATA74794A
ATA74794A AT0074794A AT74794A ATA74794A AT A74794 A ATA74794 A AT A74794A AT 0074794 A AT0074794 A AT 0074794A AT 74794 A AT74794 A AT 74794A AT A74794 A ATA74794 A AT A74794A
Authority
AT
Austria
Prior art keywords
die
tube
hollow profile
bending hollow
shape
Prior art date
Application number
AT0074794A
Other languages
German (de)
Other versions
AT402479B (en
Original Assignee
Erne Fittings Gmbh & Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Erne Fittings Gmbh & Co filed Critical Erne Fittings Gmbh & Co
Priority to AT0074794A priority Critical patent/AT402479B/en
Priority to EP95890082A priority patent/EP0677342B1/en
Priority to DE59503656T priority patent/DE59503656D1/en
Priority to AT95890082T priority patent/ATE171404T1/en
Publication of ATA74794A publication Critical patent/ATA74794A/en
Application granted granted Critical
Publication of AT402479B publication Critical patent/AT402479B/en

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
    • B21D9/00—Bending tubes using mandrels or the like
    • B21D9/01—Bending tubes using mandrels or the like the mandrel being flexible and engaging the entire tube length
    • B21D9/03—Bending tubes using mandrels or the like the mandrel being flexible and engaging the entire tube length and built-up from loose elements, e.g. series of balls

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)

Abstract

Tubular components are subjected to a forming process to produce curved lengths. The tube can be circular, elliptical or other cross-sectional shape. The required shape of the curve is provided a two part forming die (11). The initially straight tube (13) is inserted into the die and is held between sealing units (14, 15). Pressurised fluid is introduced (21) from a programmably controlled supply system. The tube is forced to adopt the curved shape with guide elements in the die (19) maintaining position. The forming pressure and fluid pressure is accurately controlled. <IMAGE>
AT0074794A 1994-04-12 1994-04-12 METHOD AND DEVICE FOR BENDING HOLLOW PROFILE WORKPIECES AT402479B (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
AT0074794A AT402479B (en) 1994-04-12 1994-04-12 METHOD AND DEVICE FOR BENDING HOLLOW PROFILE WORKPIECES
EP95890082A EP0677342B1 (en) 1994-04-12 1995-04-10 Method of and device for bending hollow section work pieces
DE59503656T DE59503656D1 (en) 1994-04-12 1995-04-10 Method and device for bending hollow profile workpieces
AT95890082T ATE171404T1 (en) 1994-04-12 1995-04-10 METHOD AND DEVICE FOR BENDING HOLLOW PROFILE WORKPIECES

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT0074794A AT402479B (en) 1994-04-12 1994-04-12 METHOD AND DEVICE FOR BENDING HOLLOW PROFILE WORKPIECES

Publications (2)

Publication Number Publication Date
ATA74794A true ATA74794A (en) 1996-10-15
AT402479B AT402479B (en) 1997-05-26

Family

ID=3498745

Family Applications (2)

Application Number Title Priority Date Filing Date
AT0074794A AT402479B (en) 1994-04-12 1994-04-12 METHOD AND DEVICE FOR BENDING HOLLOW PROFILE WORKPIECES
AT95890082T ATE171404T1 (en) 1994-04-12 1995-04-10 METHOD AND DEVICE FOR BENDING HOLLOW PROFILE WORKPIECES

Family Applications After (1)

Application Number Title Priority Date Filing Date
AT95890082T ATE171404T1 (en) 1994-04-12 1995-04-10 METHOD AND DEVICE FOR BENDING HOLLOW PROFILE WORKPIECES

Country Status (3)

Country Link
EP (1) EP0677342B1 (en)
AT (2) AT402479B (en)
DE (1) DE59503656D1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10625322B2 (en) 2015-04-01 2020-04-21 Blm S.P.A. Apparatus for improving the quality of tube bending and method that uses such apparatus
CN109821945B (en) * 2019-03-18 2020-06-23 燕山大学 Metal pipe bending device
CN110576089B (en) * 2019-08-05 2020-08-21 中国科学院金属研究所 Particle filler assisted push-bending forming method for large-caliber small-bending-radius thin-wall bent pipe
CN114210789A (en) * 2021-11-05 2022-03-22 佛山市永恒液压机械有限公司 Pipe fitting bending forming process

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE596603A (en) * 1959-11-12 1961-02-15 David Erhmon Armstrong Bending and calibration of cold tubes with or without shoulder.
DE2008917A1 (en) * 1970-02-26 1971-09-16 Schulz, Wilhelm, 4150 Krefeld Process for the production of seamless pipe bends
IT993825B (en) * 1973-08-30 1975-09-30 Ind Meccanica Brevetti Pedrazz ARTICULATED SPINDLE FOR BENDING PIPES
JPS56119626A (en) * 1980-02-22 1981-09-19 Hitachi Ltd Pipe bending machine
US4542637A (en) * 1983-11-21 1985-09-24 Bending Products, Inc. Tube bending mandrel
JPS60148627A (en) * 1984-01-13 1985-08-05 Mitsubishi Heavy Ind Ltd Bending method of pipe
US4989435A (en) * 1989-12-11 1991-02-05 Kabushiki Kaisha Asahi Kinzoku Hogyosho Method and apparatus for manufacturing curved pipe
DE4103081A1 (en) * 1991-02-01 1992-08-06 Eichelberg & Co Gmbh H D METHOD FOR THE HYDROSTATIC FORMING OF HOLLOW BODIES FROM COLD FORMABLE METAL AND DEVICE FOR IMPLEMENTING THE METHOD

Also Published As

Publication number Publication date
AT402479B (en) 1997-05-26
ATE171404T1 (en) 1998-10-15
EP0677342A3 (en) 1996-01-17
EP0677342B1 (en) 1998-09-23
DE59503656D1 (en) 1998-10-29
EP0677342A2 (en) 1995-10-18

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Legal Events

Date Code Title Description
REN Ceased due to non-payment of the annual fee