EP0010057A1 - Procédé et machine pour le fluotournage de coudes de tuyaux sans soudure à parois mince - Google Patents

Procédé et machine pour le fluotournage de coudes de tuyaux sans soudure à parois mince Download PDF

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Publication number
EP0010057A1
EP0010057A1 EP79810071A EP79810071A EP0010057A1 EP 0010057 A1 EP0010057 A1 EP 0010057A1 EP 79810071 A EP79810071 A EP 79810071A EP 79810071 A EP79810071 A EP 79810071A EP 0010057 A1 EP0010057 A1 EP 0010057A1
Authority
EP
European Patent Office
Prior art keywords
bend
pipe
tube
core
sheet metal
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
Application number
EP79810071A
Other languages
German (de)
English (en)
Other versions
EP0010057B1 (fr
Inventor
Heinz Blaser
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 EP0010057A1 publication Critical patent/EP0010057A1/fr
Application granted granted Critical
Publication of EP0010057B1 publication Critical patent/EP0010057B1/fr
Expired legal-status Critical Current

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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

Definitions

  • the present invention seeks to overcome the above disadvantages by means of a method which relates to the outward pushing of thin-walled seamless pipe bends of any bend radius, bend angle, pipe diameter from a short and thick-walled pipe blank Compliance with the caliber and exact shape, with an absolutely smooth surface of the pipe bend.
  • the thin-walled pipe bend can be made with or without cylindrical pipe extensions, made of iron, copper, brass, aluminum, zinc, etc.
  • the sheet metal pipe bends made from a thick-walled pipe blank in an outflow printing process can have a wall thickness of 0.2 - 1.5 mm and more.
  • a short and thick-walled tube blank is placed on a tube bend core which gives the desired tube bend shape and is pivoted in with this in accordance with the given tube bend radius between pressure rollers of a rotating pressure roller head which rotate around and act on the tube blank and which circulate through the outflow pressure on the pivoting tube blank effect and roll it into a thin-walled sheet metal tube bender with a smooth tube surface.
  • the pressure rollers are adjusted radially towards one another in order to exert the flying pressure on the pipe bend to be formed.
  • the pipe blank can be converted into a sheet metal pipe bend with a wall thickness of approx. 0.2 to 1.5 mm, and that of any bend radius, bottom angle and pipe diameter, with an absolutely smooth pipe bend surface and accurate caliber maintenance and exact shape from a single piece without any seam .
  • a cylindrical one is used core.
  • the bow supporting the elbow is attached to the front as a core extension, whereupon the cylindrical outflow pressure. by moving a support parallel to the axis of the pressure roller head.
  • the blanks to be machined do not rotate, but are machined with flow pressure by the radially adjustable pressure rollers of the driven pressure roller head, in that the pressure rollers circle the workpiece.
  • a machine that rotatably supports a motor-driven pressure roller head with pressure rollers that can be moved and controlled radially from and against one another in a machine frame, under which a longitudinally and transversely displaceable cross slide is located on a base plate.
  • the latter is supported by a support which can be pivoted about a vertical pivot axis as the carrier of an exchangeable tube bend core which receives the tube bend blank and which, while maintaining the tube bend radius, can be pivoted in an arc shape into the pressure roller head between the rotating pressure rollers.
  • An electric motor 3 for driving a pressure roller head 4 rests on a base plate 1 of a machine frame 2.
  • the latter is rotatably mounted in the machine frame 2 by means of a hollow shaft 5 by means of bearings 6, 7.
  • a push rod 8 which is actuated hydraulically, pneumatically etc. at 9 (cylinder with piston).
  • an exchangeable cylindrical tube core 10 At the free end of the push rod protruding in the pressure roller head 4 there is an exchangeable cylindrical tube core 10, which can be replaced by a stirring core of different dimensions.
  • the push rod 8 is guided by guide bearings 11.
  • a cylinder 12 which can be pushed back and forth is pushed on, can be mechanically controlled at 13 or in some other way.
  • This has a conical inner jacket 14 for controlling three pressure rollers 15 in star shape which are radially adjustable in relation to one another in the pressure roller head 4.
  • the latter are guided in the pressure roller head 4 with guide axes 16, for example spring-loaded, so that the free ends of the axes 16 rest against the inner jacket 14.
  • guide axes 16 for example spring-loaded
  • a cross slide 19 is guided back and forth on rods 20 of the machine frame 2 on the base plate 1, while the upper cross slide part 21 is transversely adjustable.
  • a support 23 is seated on a vertical axis 22 for receiving an exchangeable tube bend core 24.
  • the thick tube blank 25 to be machined is pushed onto it.
  • the swivel radius R of the support 23 can be shortened or extended by exchanging the corresponding support 23 and at the same time adjusting the cross slide upper part 21, which is made possible by transverse slots 26 therein.
  • the support 23 is driven by an electric motor 27 via a gear 28 for exerting a swiveling movement in the radius R of the tube bend core 24 with the tube blank in the direction of the pressure roller head 4 and its rotating pressure rollers 15.
  • the cross slide is in movement connection with a rod 30 controlled by a cylinder 29, again hydraulically, pneumatically, electrically or by hand.
  • an ejection lever 31 which can be pivoted on all sides on the cross slide 19 on its upper part 21, is used, which has a fork piece 32 or the like located at the free end the bend core 24 comprises at one end of the pipe bend of the rolled sheet metal bend 33 at 36.
  • the cylindrical core extension 10 is required at the end of the pipe bend core 24, which sits on the push rod 8, which is pushed forward as an extension on the pipe bend core 24 with the push rod 8.
  • the cylindrical pipe bend extension 34 to be achieved can be the same, larger or smaller than the pipe bend diameter, as desired.
  • the cylindrical pipe bend extensions 34 can thus also be molded on widely or closely.
  • the cylinder 9 with the piston comes into action in order to bring about the longitudinal displacement of the cross slide 19, the cylinder 29 being able to cooperate with the piston, or merely being displaced.
  • extension arm 25 of the support 23 is also conceivable to design the extension arm 25 of the support 23 to be shortenable or extendable.
  • the sheet metal pipe bend 33 (Eig. 8) produced seamlessly and without seams by the machine using the machine has an absolutely smooth surface. It contains caliber and conforms to shape. As an extension of the pipe bend, it can have cylindrical pipe bend extensions 34, which can be the same as the pipe bend diameter or can be narrowed or expanded. The wall thickness measures approx. 0.2 to 1.5 mm depending on the purpose of the sheet metal pipe bend.
EP79810071A 1978-10-11 1979-08-21 Procédé et machine pour le fluotournage de coudes de tuyaux sans soudure à parois mince Expired EP0010057B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH10534/78 1978-10-11
CH1053478A CH634238A5 (de) 1978-10-11 1978-10-11 Verfahren und maschine zum fliessdruecken eines duennwandigeren naht- und falzlosen blech-rohrbogens aus einem kuerzeren und dickwandigeren rohrbogen-rohling.

Publications (2)

Publication Number Publication Date
EP0010057A1 true EP0010057A1 (fr) 1980-04-16
EP0010057B1 EP0010057B1 (fr) 1983-01-19

Family

ID=4364244

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79810071A Expired EP0010057B1 (fr) 1978-10-11 1979-08-21 Procédé et machine pour le fluotournage de coudes de tuyaux sans soudure à parois mince

Country Status (14)

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

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0314936A2 (fr) * 1987-10-09 1989-05-10 BLM S.p.A. Procédé et machine pour la déformation plastique de pièces tubulaires
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

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4989435A (en) * 1989-12-11 1991-02-05 Kabushiki Kaisha Asahi Kinzoku Hogyosho Method and apparatus for manufacturing curved pipe

Citations (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
US3340713A (en) * 1965-02-11 1967-09-12 James E Webb Spin forming tubular elbows
FR1540166A (fr) * 1967-10-09 1968-09-20 Zentrale Entwicklung Konstrukt Dispositif de pressage de pièces étirées en longueur à symétrie de révolution
DE1289017B (de) * 1963-10-03 1969-02-13 Lodge And Shipley Company Zentrifugalkraftaufnahme eines waehrend des Betriebs radial einstellbaren Traegers fuer ein Drueckwerkzeug
DE2714782A1 (de) * 1977-04-02 1978-10-05 Bertrams Ag Verfahren und vorrichtung zur herstellung von rohrkruemmern

Patent Citations (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 (de) * 1963-10-03 1969-02-13 Lodge And Shipley Company Zentrifugalkraftaufnahme eines waehrend des Betriebs radial einstellbaren Traegers fuer ein Drueckwerkzeug
US3340713A (en) * 1965-02-11 1967-09-12 James E Webb Spin forming tubular elbows
FR1540166A (fr) * 1967-10-09 1968-09-20 Zentrale Entwicklung Konstrukt Dispositif de pressage de pièces étirées en longueur à symétrie de révolution
DE2714782A1 (de) * 1977-04-02 1978-10-05 Bertrams Ag Verfahren und vorrichtung zur herstellung von rohrkruemmern

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0314936A2 (fr) * 1987-10-09 1989-05-10 BLM S.p.A. Procédé et machine pour la déformation plastique de pièces tubulaires
EP0314936A3 (en) * 1987-10-09 1990-07-11 Blm S.P.A. Method and apparatus for plastic forming of tubular articles
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

Also Published As

Publication number Publication date
PL218848A1 (fr) 1980-06-16
NO148665C (no) 1983-11-23
NO148665B (no) 1983-08-15
PT70295A (de) 1979-11-01
FI792882A (fi) 1980-04-12
ES484879A1 (es) 1980-04-01
IE49621B1 (en) 1985-11-13
CH634238A5 (de) 1983-01-31
HU178179B (en) 1982-03-28
DD146402A5 (de) 1981-02-11
DE2964544D1 (en) 1983-02-24
CS216685B2 (en) 1982-11-26
YU231279A (en) 1984-04-30
EP0010057B1 (fr) 1983-01-19
NO793232L (no) 1980-04-14
CA1123381A (fr) 1982-05-11
IE791923L (en) 1980-04-11

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