US3882707A - Apparatus for forming necks on pipes - Google Patents

Apparatus for forming necks on pipes Download PDF

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Publication number
US3882707A
US3882707A US410872A US41087273A US3882707A US 3882707 A US3882707 A US 3882707A US 410872 A US410872 A US 410872A US 41087273 A US41087273 A US 41087273A US 3882707 A US3882707 A US 3882707A
Authority
US
United States
Prior art keywords
shaped
arrangement
rim
pipe
bearing rim
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 - Lifetime
Application number
US410872A
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English (en)
Inventor
Gunter Rothenberger
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.)
EDWIN ROTHENBERGER A K A SCHWE
ING EDWIN ROTHENBERGER A/K/A SCHWEIBTECHNIK- und INDUSTRIE-BEDARF
Original Assignee
EDWIN ROTHENBERGER A K A SCHWE
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
Priority claimed from DE19737322019 external-priority patent/DE7322019U/de
Application filed by EDWIN ROTHENBERGER A K A SCHWE filed Critical EDWIN ROTHENBERGER A K A SCHWE
Application granted granted Critical
Publication of US3882707A publication Critical patent/US3882707A/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B21C37/29—Making branched pieces, e.g. T-pieces
    • B21C37/298—Forming collars by flow-drilling
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49428—Gas and water specific plumbing component making
    • Y10T29/49446—Ferrule making or reforming

Definitions

  • a threaded bolt-shaped member has a hook-shaped expansion head and cooperates with a pressure sleeve positioned coaxially with the boltshaped member.
  • the pressure sleeve has a bearing rim and a cylindrical recessed portion corresponding in diameter to the dimension of the expansion head.
  • the bearing rim of the pressure sleeve has, furthermore, two cutouts located diametrically opposite to each other and extending for the entire width of the rim.
  • the present invention relates to an arrangement for forming necks or throats of cylindrical shape attached and integral therewith to the surface or periphery of pipes, storage vessels, for example.
  • the apparatus has a threaded bolt-shaped member provided with a hookshaped expansion head which cooperates with a coaxially located pressure sleeve.
  • the pressure sleeve is, in turn, provided with a bearing rim and a cylindrical recess which cooperates with the expansion head for forming the neck.
  • An arrangement of the preceding species is used in a manner, in which a hole is first bored into the cylindrical pipe or vessel which is to be provided with a neck.
  • the diameter of this bored hole is made adequate to allow the passage of the expansion head.
  • the expansion head is, for this purpose, screwed out of the pressure sleeve by an amount which allows an inclined slot or slit on the expansion head, can enter the pipe upon corresponding inclination of the expansion head.
  • the apparatus is oriented radially with respect to the axis of the pipe member, and the expansion head is drawn into the pressure sleeve by turning the threaded bolt-shaped member.
  • plastic deformation of the material of the pipe member takes place, and a neck attachment is formed.
  • the outer diameter of the neck-shaped attachment corresponds then to the inner diameter of a pressure sleeve.
  • the pressure sleeve bears with its reaction force against the pipe member.
  • the bearing rim of the pressure sleeve is in contact with the pipe line or storage vessel, along only two contact lines.
  • These contact lines lie in the longitudinal direction of the pipe line or storage vessel on which the neck attachments are to be formed, and these two contact lines, furthermore, lie on two opposite sides of the neck attachment to be formed.
  • notable indentations are formed in the regions of the contact lines on the pipe. These indentations do not only provide an undesirable appearance, but they also cause deformation of the cross'sectional area of the pipe, as well as the distortion of the pipe axis. Such deformations and distortions are particularly undesirable when producing pipe-line networks or circuits.
  • Another object of the present invention is to provide an arrangement of the foregoing character which is simple in design and easily operated.
  • a further object of the present invention is to provide an arrangement, as described, which may be economically fabricated and maintained.
  • the objects of the present invention are achieved by providing the bearing rim of the pressure sleeve with cutouts located diametrically to each other on the pressure sleeve and extending the entire width of the bearing rim.
  • the objects of the invention are not only achieved, but the pressure sleeve is also prevented from turning while the threaded bolt-shaped member is being drawn by turning of this bolt-shaped member.
  • the bearing rim of the pressure sleeve can be on the frontal surface of the pressure sleeve which may be substantially of cylindrical shape.
  • the bearing rim has a flange-shaped portion which is expanded so that in the region where the pressure sleeve bears against the pipe, the bearing or pressure area is substantially increased.
  • the form of the cutouts should be matched to the cross-sectional area of the pipe to be worked on.
  • the neck forming arrangement in accordance with the present invention, is to be applied to pipes of many different diameters, it is desirable that the cutouts have a prismatic cross-section. It is particularly desirable that the cutouts are in the form of widely opened Vs which are symmetrically arranged on the pressure sleeve.
  • the opening angle of the V is, thereby, within the range of to 140, and is preferably in the neighborhood of
  • the pressure sleeve makes contact with the pipe not only along two contact lines, but instead contact is made along four lines in accordance with the present invention.
  • the bearing forces are distributed thereby along a larger region or area of the pipe, so that indentations or deformations are avoided in an assured manner.
  • the flared or extended portion of the flange bearing rim causes interference in the use of the device.
  • interference is incurred when the expansion head is inserted in an inclined position.
  • the expansion head has to be rotated out of the pressure sleeve by a large number of turns prior to the insertion process.
  • the threaded portion of the bolt-shaped member attached to the expansion head must again be rotated into pressure sleeve prior to commencement of the process for forming the neck attachment.
  • the rim is cut-off in a symmetrical manner along two sides spaced apart by substantially the outer diameter of the cylindrical part of the pressure sleeve.
  • the reduction of the. flange rim of the bearing rim can be accomplished in an advantageous manner by severing or milling away segments of the bearing rim.
  • the segments are removed so that the pressure rim is bordered by two parallel and symmetrical planar surfaces which are separated from each other by a distance corresponding substantially to the outer diameter of the cylindrical part of thepressure sleeve.
  • FIG. I is a perspective view of a pipe-shapedmember provided with a neck integrally formed on the pipe, in accordance with the present invention.
  • FIG. 2 is an exploded view of the neck-forming arrangement of the present invention
  • FIG. 3 is a plan view with parts broken away
  • FIG. 2 shows the neck-forming arrangement of FIG. 2 during use
  • FIG. 4 is a perspective view of a pressure sleeve shown in FIG. 2, when having'a reduced bearing rim I flange.
  • FIG. ll there is shown a pipe-shaped member ll having formed on the exterior cylindrical periphery, a cylindrical neck attachment 2.
  • indentations or depressions 3 result along the longitudinal direction of the pipe I. These depressions or indentations lie on two opposite sides of the neck 2, and are shown in FIG. I by cross-hatched portions.
  • the cylindrical neck attachment 2 serves for the purpose of inserting or soldering on branch lines to the pipe line ll. Such branch lines have been omitted from the drawing for the purpose of simplification and clarity.
  • a threaded bolt-shaped member 4 is shown in FIG. 2, and is provided with a fine thread 5.
  • This bolt-shaped member has, at one end, a hook-shaped expansion head 6.
  • This expansion head projects from a substantially conical-shaped portion of the bolt-shaped member 4.
  • the expansion head furthermore, has a substantially rectangular cross section in a plane inclined to the axis of the bolt-shaped member. The width of this rectangular cross-sectional area is substantially smaller than the bore in the pipe line through which the expansion head is to be passed. The length of the rectangularshaped cross-section corresponds substantially to the diameter of the final cylindrical neck.
  • the expansion head has an inclined slit or slot 7.
  • the surfaces which are effective in the actual neck forming process are dented by 8 and Q. These surfaces 8 and 9 are well rounded atthe transition regions or surfaces to the remaining areas of the expansionheadQ I for the purpose of allowing smooth and easy motion) 1 with respect to the material to be worked on; f
  • the threaded bolt-shaped member 4 is providedwith I aconical-shaped portion at the end opposite to, that having the expansion head.
  • This conioal-shapedp or-H Q 3 tion 10 terminates in a hexagonalportion I1 to:which:.
  • a lever or a ranch may be applied for the purposeof I turning the expansion head.
  • the threaded bolt-shaped member 4 operates in co njunction with a pressure sleeve 12 which has a hollow cylindrical portion 13 provided with a flange-shaped expanded bearing rim 14. The upper part ofthe hollow.
  • cylindrical portion 13 shows a cylindricalinner bore 15 having a diameter and length correspondingto-the J dimensions of the cylindrical neck 2 which is to be formed (FIG. II).
  • the lower region of the hollow cylint T drical part I3 is provided with an internal threadfllo ing angle of substantially a
  • FIG. 3 it may be seen that the expansionhead ti has been drawn into the wall of the pipe line 1i,,as a re- 5 1 sult of rotation of the threaded bolt-shaped member 4.
  • the neck attachment 2 has been formed in I a cylindrical shape of which only a small portion is visii ble in FIG. 3.
  • the remainder of the cylindricalneck lies in the interior of the pressure sleeve 12.
  • the bearing riml4 pressesagainstthe pipe line I along two contact lines.
  • the pipe line I has a greater resistence tof indentations. or depressions that may be producedlby. 7
  • a plane of symmetry exists which passes, through the axis of, the pressure sleeve IZandthe bot-1' tom ends of the recesses 18.
  • This distance L corresponds to the outer diameter D of the cylindrical portion 13 of the pressure sleeve:
  • the bearing rim has therebya reduced width in a substantially rectangular cross section which makes it possible to move the pressure sleeve quite close to the pipe member to be worked on, when the pressure sleeve is oriented correspondingly) 1 I
  • This arrangement furthermore, makes it also possible to require only a relatively small amount ofrotation to move the expansion head out; of the sleeve for the pure 1 pose of inserting into the bore of the pipemernber or body which is to be worked on.
  • An arrangement for forming cylindrical-shaped attachments of the periphery of pipe-shaped members comprising, in combination, a threaded bolt member having a hook-shaped head; a sleeve member coaxial with the axis of said bolt member and having a threaded portion for receiving said bolt member, said sleeve member having a cylindrical recess for the passage thereinto of said hook-shaped head; and a bearing rim on said sleeve member and having diametrically oppositely lying recesses, each recess extending the full width of the rim, said sleeve member contacting said pipe-shaped members at four contact lines.
  • bearing rim is substantially reduced in dimension to correspond to the outer diameter of said sleeve member along a line perpendicular to a plane of symmetry passing through said recesses of said bearing rim.
  • An arrangement for forming cylindrical-shaped attachments of the periphery of pipe-shaped members comprising, in combination, a threaded bolt member having a hook-shaped head; a sleeve member coaxial with the axis of said bolt member and having a threaded portion for receiving said bolt member, said sleeve member having a cylindrical recess for the passage thereinto of said hook-shaped head; and a bearing rim on said sleeve member and having diametrically oppositely lying recesses, each recess extending the full width of the rim, said sleeve member contacting said pipe-shaped members at four contact lines, said recesses of said rim having a substantially prismatic cross section, said recesses of said bearing rim being substantially V-shaped and having an angle within the range of substantially to between the sides of the V- shape, said bearing rim being substantially reduced in dimension to correspond to the outer diameter of said sleeve member along a line perpendicular to a plane of symmetry passing through said rece

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
  • Toys (AREA)
US410872A 1973-03-26 1973-10-29 Apparatus for forming necks on pipes Expired - Lifetime US3882707A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE7311408 1973-03-26
DE19737322019 DE7322019U (de) 1973-06-13 1973-06-13 Aushalsvorrichtung

Publications (1)

Publication Number Publication Date
US3882707A true US3882707A (en) 1975-05-13

Family

ID=25947166

Family Applications (1)

Application Number Title Priority Date Filing Date
US410872A Expired - Lifetime US3882707A (en) 1973-03-26 1973-10-29 Apparatus for forming necks on pipes

Country Status (6)

Country Link
US (1) US3882707A (fr)
JP (2) JPS49123164A (fr)
ES (1) ES201701Y (fr)
FR (1) FR2223103B1 (fr)
GB (1) GB1398945A (fr)
NL (1) NL7309875A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4719780A (en) * 1985-10-04 1988-01-19 G.A. Serlachius Corp. Tool point and its working method and tool for making and flanging a hole
CN100369690C (zh) * 2005-06-06 2008-02-20 夏纪运 薄金属管壁孔的外翻边装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2511836A (en) * 1950-06-20 Tube joining
US3050102A (en) * 1958-06-16 1962-08-21 Lawrence R Hock Apparatus for spinning a lateral flange on a tube
US3538734A (en) * 1967-01-26 1970-11-10 Kauno Koskinen Tool for forming external collar at a side opening in a pipe
US3670547A (en) * 1968-06-25 1972-06-20 Maurice Granger Apparatus adapted to form collars around openings previously executed in plates or tubes

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2511836A (en) * 1950-06-20 Tube joining
US3050102A (en) * 1958-06-16 1962-08-21 Lawrence R Hock Apparatus for spinning a lateral flange on a tube
US3538734A (en) * 1967-01-26 1970-11-10 Kauno Koskinen Tool for forming external collar at a side opening in a pipe
US3670547A (en) * 1968-06-25 1972-06-20 Maurice Granger Apparatus adapted to form collars around openings previously executed in plates or tubes

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4719780A (en) * 1985-10-04 1988-01-19 G.A. Serlachius Corp. Tool point and its working method and tool for making and flanging a hole
CN100369690C (zh) * 2005-06-06 2008-02-20 夏纪运 薄金属管壁孔的外翻边装置

Also Published As

Publication number Publication date
FR2223103B1 (fr) 1980-04-11
GB1398945A (en) 1975-06-25
JPS49123164A (fr) 1974-11-25
ES201701U (es) 1975-10-01
JPS5889131U (ja) 1983-06-16
ES201701Y (es) 1976-02-01
JPS5922885Y2 (ja) 1984-07-09
FR2223103A1 (fr) 1974-10-25
NL7309875A (fr) 1974-09-30

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