EP0006074B1 - Vorrichtung und Verfahren zum Kalibrieren sowie zum Richten von Rohrstücken mit Hilfe einer mit Kalibrierbacken versehenen Kalibriereinheit - Google Patents

Vorrichtung und Verfahren zum Kalibrieren sowie zum Richten von Rohrstücken mit Hilfe einer mit Kalibrierbacken versehenen Kalibriereinheit Download PDF

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Publication number
EP0006074B1
EP0006074B1 EP79810033A EP79810033A EP0006074B1 EP 0006074 B1 EP0006074 B1 EP 0006074B1 EP 79810033 A EP79810033 A EP 79810033A EP 79810033 A EP79810033 A EP 79810033A EP 0006074 B1 EP0006074 B1 EP 0006074B1
Authority
EP
European Patent Office
Prior art keywords
jaws
calibrating
pipe
movement
calibration
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
EP79810033A
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German (de)
English (en)
French (fr)
Other versions
EP0006074A1 (de
Inventor
Christian Ragettli
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
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0006074A1 publication Critical patent/EP0006074A1/de
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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, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, rods, wire, tubes, profiles 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
    • B21C37/30—Finishing tubes, e.g. sizing, burnishing
    • 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
    • B21D3/00—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts
    • B21D3/10—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts between rams and anvils or abutments

Definitions

  • the purpose of the present invention is to propose a device which allows a precise calibration and straightening of the pipe section without the pipe or the calibration machine being damaged as a result of overexertion by frictional and mass acceleration forces.
  • the conveyor rollers are expediently mounted on rockers in the vertical plane and can be moved horizontally.
  • the device for internal or external calibration and for straightening workpieces has a central calibration unit 1, which has calibration jaws 3 arranged in a beam around the central axis 2, of which in FIG. 2 -7 only two opposite are shown purely schematically.
  • Each calibration jaw is equipped with two sensors 4.
  • the calibration jaws 3 can be moved together in the direction of an opening or closing movement in the radial direction, so that the diameter of a tube inserted in the feed direction is reduced during the closing movement of the jaws 3 by pressing the jaws 3 together, or a tube that is not completely round is directed accordingly becomes.
  • the common drive of the jaws 3 is not shown in Figs. 2-7.
  • a support roller 16 is arranged directly in front of the calibration unit 1, which is supported by means of a single-acting cylinder 13 and piston 14 with the aid of the piston rod 15.
  • the cylinder 13 is supported on the base plate 12 by means of a fixed rod 17.
  • the calibration jaws 3 are then moved together, initially at high speed, until two opposite sensors 4 touch the tube 5. Touching the sensors 4 causes the radial closing movement of the calibration jaws 3 to be stopped immediately. Immediately afterwards, the closing movement of the calibration jaws 3 is resumed, but with a much slower movement, until the position shown in FIGS. 6 and 7 is reached.
  • the tube 5 is conveyed in the conveying direction by the same amount as the length of the calibration jaws 3 and the jaws 3 are then closed again in two stages, as described.
  • the valves of the double cylinders remain closed until the tube 5 touches the sensors 4. With the touch, the valves of the double cylinder 7 are opened and the closing movement of the calibration jaws continues to be significantly slowed down.
  • the central calibration device 21 is preceded by a feed device 28 on the left side and a discharge device 46 on the right side.
  • the feed device 28 consists of a floor structure 29, which is designed to accommodate the entire pipe piece to be processed and a considerable length, for. B. 9-10 m.
  • conveyor rollers 30 are provided, which are each arranged on a support axis 31 running perpendicular to the conveying direction and are driven together.
  • the conveyor rollers 30 are axially displaceably mounted on the support axles 31 and are connected to one another with the aid of a loose centering rope 33 such that when the centering rope is tightened, each roller 30 assumes the central position on the axle 31. With the loose rope 33, however, the rollers 30 can be freely moved on their axes 31.
  • the first cylinder 39 is dimensioned such that the extended piston rod is able to carry the pipe weight and, in addition, 10% of the pipe weight, while the second cylinder 41 has a somewhat smaller load capacity, which is approximately 10% less than the pipe weight.
  • the piston in the first cylinder 39 is pressurized with air and the piston rod 40 is extended, while the second cylinder 41 is without air.
  • the corresponding pressure for the cylinders must be adapted to the respective pipe weight.
  • the height adjustment of the rollers for the different pipe diameters is done by a motorized adjustment unit.
  • each rocker 38 is provided with a brake 44 which can lock the rocker in any position.
  • a brake 44 which can lock the rocker in any position.
  • light barriers 45 are provided which control the air supply to the pneumatic units.
  • the actuation of the brakes 44 is coupled to the feed device and to the sensors 26, in such a way that the brakes are applied before the onset of the feed and the brakes are released when the sensors 26 are actuated.
  • the discharge device which extends on the other side of the central calibration device 21 coaxially with the feed device 28, has vertically movable conveyor rollers 48 in rockers 47, by means of which the calibrated and directed pipe pieces are removed.
  • the first feed period ends when the pipe section comprising the pipe end is in the open calibration jaws 23.
  • the drive of the calibration jaws 23 is activated, whereupon they initially move into the closed position at high speed.
  • the closing movement of the calibration jaws 23 is interrupted.
  • the brakes 44 which block the rockers 38, are released.
  • the closing movement of the calibration jaws 23 is then continued in a second phase at a considerably reduced speed, so that the pipe section is first straightened and then calibrated.
  • the proximity jaws 23 are opened by a proximity switch, in that this proximity switch influences the drive of the jaws 23 accordingly.
  • This proximity switch previously has the effect that the brakes 44 are applied again and the rockers 38 are thus blocked.
  • the conveyor rollers 30 can therefore no longer move vertically, but only move horizontally on the associated support axes 31.
  • the feed is then started again and a further section of the pipe is fed to the central calibration device, etc. Since the actual straightening of the pipe section and the subsequent calibration does not start suddenly at high speed, but takes place at a significantly reduced speed of the jaws, occur during the Do not set up any impermissible bending stresses and surface pressures. Furthermore, the free end of the tube will move smoothly by simultaneously moving the conveyor rollers 30 on the support axles 31.
  • the fully calibrated and directed pipe is fed to the rollers 48 of the discharge device 46.
  • pneumatic means can also be replaced by hydraulic means.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sorting Of Articles (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Wire Processing (AREA)
  • Rollers For Roller Conveyors For Transfer (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
EP79810033A 1978-04-18 1979-04-09 Vorrichtung und Verfahren zum Kalibrieren sowie zum Richten von Rohrstücken mit Hilfe einer mit Kalibrierbacken versehenen Kalibriereinheit Expired EP0006074B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2816722 1978-04-18
DE2816722A DE2816722C3 (de) 1978-04-18 1978-04-18 Einrichtung zum Innen- und Außenkalibrieren sowie zum Richten von Rohrstücken

Publications (2)

Publication Number Publication Date
EP0006074A1 EP0006074A1 (de) 1979-12-12
EP0006074B1 true EP0006074B1 (de) 1982-01-20

Family

ID=6037260

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79810033A Expired EP0006074B1 (de) 1978-04-18 1979-04-09 Vorrichtung und Verfahren zum Kalibrieren sowie zum Richten von Rohrstücken mit Hilfe einer mit Kalibrierbacken versehenen Kalibriereinheit

Country Status (4)

Country Link
US (1) US4255860A (enrdf_load_stackoverflow)
EP (1) EP0006074B1 (enrdf_load_stackoverflow)
JP (2) JPS54139874A (enrdf_load_stackoverflow)
DE (1) DE2816722C3 (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2520827A2 (de) 2011-05-02 2012-11-07 Waagner-Biro Austria Stage Systems AG Hebevorrichtung zum vertikalen Anheben von Lasten

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3333390A1 (de) * 1983-09-13 1985-03-21 Mannesmann AG, 4000 Düsseldorf Vorrichtung zum zu- und abfuehren der dornstangen an schraeg- und laengswalzwerken
US6637121B2 (en) * 2002-01-07 2003-10-28 Byron G. Barefoot Internal weld profile gauge
KR100897986B1 (ko) 2009-02-16 2009-05-18 주식회사 현대알비 네방향 축압 파이프 잔류 응력 제거용 교정장치
EP3475008A1 (de) * 2016-06-22 2019-05-01 Theodor Gräbener GmbH & Co. KG Vorrichtung zum kalibrieren und richten von hohlen bauteilen sowie verfahren mit einer derartigen vorrichtung
CN107377687A (zh) * 2017-08-30 2017-11-24 兰州兰石集团有限公司 一种矫直机
CN109290397A (zh) * 2018-11-14 2019-02-01 浙江中达特钢股份有限公司 一种立式管校直装置

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2519221A (en) * 1945-07-27 1950-08-15 Bogen Samuel Electromagnetic and photoelectric mechanism and method for continuous tube gauging
DE1046983B (de) * 1956-10-30 1958-12-18 Sutton Eng Co Zufuehr- oder Auslauftisch fuer Richtmaschinen
US3332675A (en) * 1964-06-09 1967-07-25 Raymond Int Inc Cutting metal tubing
DE1527335A1 (de) * 1965-08-16 1972-01-13 Harten Geb Boers Gertrud Van Beschickungsvorrichtung fuer Maschinen zum Biegen von Rohren,Stangen od.dgl.
US3568485A (en) * 1968-08-09 1971-03-09 Republic Steel Corp Method and apparatus for straightening and testing workpieces
GB1410075A (en) * 1972-12-07 1975-10-15 British Insulated Callenders Observation method and equipment
US4071958A (en) * 1975-04-04 1978-02-07 Aichi Steel Works, Limited Device for inspecting inner diameter and bending of pipe
DE2524310B2 (de) * 1975-06-02 1978-06-22 Gebrueder Roecher, Maschinen- U. Apparatebau, 5904 Eiserfeld-Eisern Hydraulische Richtpresse für stabförmige Werkstücke

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2520827A2 (de) 2011-05-02 2012-11-07 Waagner-Biro Austria Stage Systems AG Hebevorrichtung zum vertikalen Anheben von Lasten

Also Published As

Publication number Publication date
JPS6116887Y2 (enrdf_load_stackoverflow) 1986-05-24
EP0006074A1 (de) 1979-12-12
JPS59180810U (ja) 1984-12-03
DE2816722C3 (de) 1981-01-08
DE2816722A1 (de) 1979-10-25
US4255860A (en) 1981-03-17
DE2816722B2 (de) 1980-05-14
JPS54139874A (en) 1979-10-30

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