ES484879A1 - Method and machine for spin forming thin-walled seamless tubular elbows. - Google Patents

Method and machine for spin forming thin-walled seamless tubular elbows.

Info

Publication number
ES484879A1
ES484879A1 ES484879A ES484879A ES484879A1 ES 484879 A1 ES484879 A1 ES 484879A1 ES 484879 A ES484879 A ES 484879A ES 484879 A ES484879 A ES 484879A ES 484879 A1 ES484879 A1 ES 484879A1
Authority
ES
Spain
Prior art keywords
tubular
blank material
corepiece
elbow
walled
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.)
Expired
Application number
ES484879A
Other languages
Spanish (es)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of ES484879A1 publication Critical patent/ES484879A1/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/15—Making tubes of special shape; Making tube fittings
    • B21C37/28—Making tube fittings for connecting pipes, e.g. U-pieces
    • 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
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/14—Spinning
    • B21D22/16—Spinning over shaping mandrels or formers

Abstract

1. A method for spin-forming thin-walled seamless tubular elbows with any desired elbow radius, elbow angle and tube diameter from a short and thick-walled tubular blank material using a rotatable tubular elbow corepiece, characterized in that the short and thick-walled tubular blank material has the form of a section of a segment with a curvature matching the curvature of the tubular corepiece and that the blank material is fitted over the tubular corepiece and is rotated together with said corepiece according to corresponding tubular elbow radius arch-like between and through pressing rollers of a rotating pressing roller head rotating around the blank material for acting thereon, with said rotating pressing rollers acting with flow pressure onto the rotating blank material so that the same is stretched out and rolled out into a thin-walled sheet metal tubular elbow with its length elongated to many times the length of the blank material.
ES484879A 1978-10-11 1979-10-10 Method and machine for spin forming thin-walled seamless tubular elbows. Expired ES484879A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1053478A CH634238A5 (en) 1978-10-11 1978-10-11 METHOD AND MACHINE FOR FLOW PRESSING A THIN-WALLED SEAMLESS AND FOLDLESS SHEET PIPE SHEET FROM A SHORT AND THICK-WALLED PIPE SHEET BLANK.

Publications (1)

Publication Number Publication Date
ES484879A1 true ES484879A1 (en) 1980-04-01

Family

ID=4364244

Family Applications (1)

Application Number Title Priority Date Filing Date
ES484879A Expired ES484879A1 (en) 1978-10-11 1979-10-10 Method and machine for spin forming thin-walled seamless tubular elbows.

Country Status (14)

Country Link
EP (1) EP0010057B1 (en)
CA (1) CA1123381A (en)
CH (1) CH634238A5 (en)
CS (1) CS216685B2 (en)
DD (1) DD146402A5 (en)
DE (1) DE2964544D1 (en)
ES (1) ES484879A1 (en)
FI (1) FI792882A (en)
HU (1) HU178179B (en)
IE (1) IE49621B1 (en)
NO (1) NO148665C (en)
PL (1) PL218848A1 (en)
PT (1) PT70295A (en)
YU (1) YU231279A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1223306B (en) * 1987-10-09 1990-09-19 Blm Spa PROCEDURE AND MACHINE FOR THE PLASTIC DEFORMATION OF TUBULAR BODIES
US4989435A (en) * 1989-12-11 1991-02-05 Kabushiki Kaisha Asahi Kinzoku Hogyosho Method and apparatus for manufacturing curved pipe
US5979202A (en) * 1997-05-29 1999-11-09 Blakeley Engineering Ltd. Method and apparatus for making pipe line steel grooved-end fittings
US7316142B2 (en) 2004-05-21 2008-01-08 Lancaster Paul B Metal spin forming head

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2137864A (en) * 1935-09-28 1938-11-22 Taylor James Hall Method of making pipe fittings
US2560822A (en) * 1945-11-08 1951-07-17 Walton S Robinson Means and method for making seamless pipe elbows
DE1289017B (en) * 1963-10-03 1969-02-13 Lodge And Shipley Company Centrifugal force absorption of a radially adjustable carrier for a pressure tool during operation
US3340713A (en) * 1965-02-11 1967-09-12 James E Webb Spin forming tubular elbows
FR1540166A (en) * 1967-10-09 1968-09-20 Zentrale Entwicklung Konstrukt Device for pressing parts stretched in length with symmetry of revolution
DE2714782A1 (en) * 1977-04-02 1978-10-05 Bertrams Ag Bender for thin-wall pipes - has mandrel built up from discs to fit in bend during external working by rollers

Also Published As

Publication number Publication date
CA1123381A (en) 1982-05-11
DE2964544D1 (en) 1983-02-24
DD146402A5 (en) 1981-02-11
NO148665B (en) 1983-08-15
NO793232L (en) 1980-04-14
PT70295A (en) 1979-11-01
FI792882A (en) 1980-04-12
PL218848A1 (en) 1980-06-16
NO148665C (en) 1983-11-23
CH634238A5 (en) 1983-01-31
EP0010057B1 (en) 1983-01-19
HU178179B (en) 1982-03-28
EP0010057A1 (en) 1980-04-16
CS216685B2 (en) 1982-11-26
IE791923L (en) 1980-04-11
IE49621B1 (en) 1985-11-13
YU231279A (en) 1984-04-30

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