EP0274719B1 - Procédé de réalisation d'un filet et corps tubulaire muni d'un tel filet - Google Patents

Procédé de réalisation d'un filet et corps tubulaire muni d'un tel filet Download PDF

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Publication number
EP0274719B1
EP0274719B1 EP87118889A EP87118889A EP0274719B1 EP 0274719 B1 EP0274719 B1 EP 0274719B1 EP 87118889 A EP87118889 A EP 87118889A EP 87118889 A EP87118889 A EP 87118889A EP 0274719 B1 EP0274719 B1 EP 0274719B1
Authority
EP
European Patent Office
Prior art keywords
thread
shaping
connection sleeve
internal thread
base body
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
EP87118889A
Other languages
German (de)
English (en)
Other versions
EP0274719A2 (fr
EP0274719A3 (en
Inventor
Heinz Gruber
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.)
GD-ANKER GmbH
Original Assignee
GD-ANKER GmbH
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 GD-ANKER GmbH filed Critical GD-ANKER GmbH
Priority to AT87118889T priority Critical patent/ATE90891T1/de
Publication of EP0274719A2 publication Critical patent/EP0274719A2/fr
Publication of EP0274719A3 publication Critical patent/EP0274719A3/de
Application granted granted Critical
Publication of EP0274719B1 publication Critical patent/EP0274719B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/22—Rods or pipes with helical structure
    • 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
    • B21D15/00—Corrugating tubes
    • B21D15/04—Corrugating tubes transversely, e.g. helically
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/02—Couplings; joints
    • E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
    • E21B17/042—Threaded
    • E21B17/0426—Threaded with a threaded cylindrical portion, e.g. for percussion rods

Definitions

  • the invention relates to a method according to the preamble of claim 1.
  • a method for producing an internal thread of a tubular base body according to the preamble of claim 1 in which a relatively thin-walled tube is pushed over an externally threaded, rotatably mounted mandrel, the walls of the Pipe are pressed into the profile of said thread mandrel by a system of externally rotating pressure rollers, so that the latter screws into the tube during its rotational movement.
  • This procedure is used for pipes with a wall thickness of 2.0mm to 2.5mm.
  • the essential feature of this known method is that the profile of the resulting internal thread is predetermined by the internal mandrel, in the outer profile of which the wall of the tube to be molded is pressed.
  • the necessary relative movement between the mandrel and the tube during shaping leads to increasing deformation and, in particular, frictional forces with increasing wall thicknesses, which also results in restrictions with regard to the length of the tube or the internal thread to be produced Apply this procedure.
  • a method for producing a heat exchanger tube is known, the outer surface of which is provided with helical recesses which are present on the outside and equally on the inside.
  • a tubular base body is moved axially through a support tube arranged in a stationary manner on the outside thereof and simultaneously rotated about its longitudinal axis.
  • the support tube is provided in its central region with a recess into which a forming tool designed as a roller projects and, during the movement of the base body, applies the helical deformation through the support tube.
  • the internal thread to be produced is only indirectly formed in a non-cutting forming process by the respective forming tool engaging in one side of the tubular base body, since this is formed by the image of an outside deformation that results on the inside.
  • the resulting internal thread is produced by a free material displacement which is complementary to the outside indentation and effective on the inside of the tube and forms an image of the outside indentation.
  • FR-A-1 373 178 shows, characterized by an internal support or threaded mandrel, has been removed.
  • the internal thread formed in this way can be produced in a single deformation step. Compared to a thread cutting process, the manufacturing costs of a socket with an internal thread can be significantly reduced.
  • both hot and cold forming processes can be used in the production.
  • work hardening is the cold forming process.
  • the method according to the invention for the production of connecting sleeves which are used in the coupling of extension rods of a rock bolt, a boring rod or the like is particularly advantageous.
  • the operating conditions of these components are characterized by an extremely high mechanical load, so that in particular the fact that the preceding forming process has resulted in material hardening has a favorable effect. Due to the heavy soiling to be expected, a round thread or a thread type similar to this must also be used in these components in order to ensure proper handling under the forthcoming operating conditions. Since the manufacturing method according to the invention is associated with a flow of the material, it is naturally - without reworking the respective deformation contour - limited to the production of those thread types in which no acute-angled edges, such as with a metric thread, are to be created. In the case of boring bars, the entire outer contour thereof, including that of the connecting sleeve, is expediently provided with threaded indentations, so that the outside discharge or washing away of the cuttings is facilitated in the case of narrow boreholes.
  • FIG. 1 denotes the end part of a rock bolt on the borehole side, which is also used as a boring bar.
  • This end part 1 is thus a tubular body, which carries a known drill bit 2 on its end facing the drilling base.
  • the drill bit 2 is provided in a manner not shown in the drawing with a central bore which serves to guide a flushing medium. This bore is in conductive connection with the interior of the end part 1.
  • the end part 1 or the tubular body 1 has a threaded section 3 which is connected to an extension rod 5 via a connecting sleeve 4.
  • the extension rod 5 carries a threaded section 6.
  • Die Extension rod 5 is designed like the end part 1 as a tubular body. In principle, several such extension rods 5 can be placed next to one another and the overall length of the rock bolt can thus be adapted to the respective requirements within wide limits.
  • the illustration of the section of the present rock anchor located in the region of the end of the borehole at the end of the borehole, to which a rotary hammer or other drive unit is coupled during the drilling operation, has been omitted.
  • the internal thread of the connecting sleeve 4 is produced by a non-cutting shaping, here by cold forming, in which the profile shown in FIG. 1 is produced by a deformation tool on the outside 7 of the connecting sleeve 4, the internal thread being formed by a to the outside profile complementary, internally effective free material displacement is formed.
  • a non-cutting shaping here by cold forming
  • the profile shown in FIG. 1 is produced by a deformation tool on the outside 7 of the connecting sleeve 4
  • the internal thread being formed by a to the outside profile complementary, internally effective free material displacement is formed.
  • the outside 7 consists of a helically wound, approximately circular arc-shaped indentation 8 in cross section, with smooth, only slightly deformed surface sections 9 remaining between the individual indentation passages 8.
  • Fig. 3 shows that the deformation process on the inside 10 of the threaded sleeve threads 11, whose cross-sectional shape is essentially determined by arcs and which can thus be regarded as a round thread.
  • These threads 11 are directly opposite the indentations 8. It is essential for the subject matter of the invention that the formation of these threads 11 on the inside can be controlled at least so precisely, both in terms of the thread depth and in terms of the pitch, by the deformation effective on the outside that the threads 11 can function according to the invention as an internal thread with respect to a predetermined external thread, which in the present case Case is formed by the threaded sections 3, 6.
  • Fig. 4 shows the effective thread pairing of the internal thread of the connecting sleeve 4 on the one hand and the external thread of the threaded portion 3 on the other.
  • the threaded sections 3, 6 are also produced by a cold forming process and have a profile which corresponds qualitatively to that of the outside 7 of the connecting sleeve 4.
  • a connecting sleeve 4 with the internal thread produced according to the invention can be made practically any length.

Landscapes

  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
  • Dowels (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Ropes Or Cables (AREA)
  • Joining Of Building Structures In Genera (AREA)

Claims (1)

  1. Procédé de formage sans enlèvement de copeaux d'un filetage intérieur (10) dans un corps tubulaire (4), dans lequel des empreintes en spirale (8) sont imprimées par des rouleaux ou des galets sur la paroi extérieure (7) du corps tubulaire, caractérisé en ce que :
    - le corps tubulaire (4) est déterminé et dimensionné en vue de son utilisation comme manchon pour le raccordement de tiges de forage ou d'ancrages de roche,
    - le filetage intérieur (10) à filets ronds est fabriqué par un déplacement libre de matière vers l'intérieur (11) du corps, complémentaire d'une empreinte formée sur la paroi extérieure, le filetage intérieur formant ainsi une image de l'empreinte extérieure,
    - ladite empreinte extérieure est formée par des filets d'empreinte (8) distincts, entre lesquels subsistent des portions de surface (9) lisses n'ayant subi qu'une déformation minime, et
    - la profondeur des filets d'empreinte (8) est inférieure à l'épaisseur de la matière du corps.
EP87118889A 1987-01-13 1987-12-19 Procédé de réalisation d'un filet et corps tubulaire muni d'un tel filet Expired - Lifetime EP0274719B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87118889T ATE90891T1 (de) 1987-01-13 1987-12-19 Verfahren zur formung eines gewindes und rohrkoerper mit gewinde.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3700758 1987-01-13
DE19873700758 DE3700758A1 (de) 1987-01-13 1987-01-13 Verfahren zur formung eines gewindes und rohrkoerper mit gewinde

Publications (3)

Publication Number Publication Date
EP0274719A2 EP0274719A2 (fr) 1988-07-20
EP0274719A3 EP0274719A3 (en) 1989-12-20
EP0274719B1 true EP0274719B1 (fr) 1993-06-23

Family

ID=6318744

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87118889A Expired - Lifetime EP0274719B1 (fr) 1987-01-13 1987-12-19 Procédé de réalisation d'un filet et corps tubulaire muni d'un tel filet

Country Status (7)

Country Link
EP (1) EP0274719B1 (fr)
JP (1) JPH069719B2 (fr)
AT (1) ATE90891T1 (fr)
AU (1) AU600070B2 (fr)
CA (1) CA1333652C (fr)
DE (1) DE3700758A1 (fr)
ES (1) ES2041259T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007049606A1 (de) * 2007-10-16 2009-04-30 Karosan Gmbh Innovative Kanal- Und Rohrleitungssanierung Verfahren und Vorrichtung zum Einziehen eines aus Kurzrohren zusammengesetzten Rohrstranges in einen Bohrkanal

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4114336A1 (de) * 1991-05-02 1992-11-05 Peri Gmbh Verfahren und vorrichtung zum anbringen von gewindezuegen auf mehrkantrohren
DE4127249C1 (fr) * 1991-08-17 1993-02-04 Gd-Anker Gmbh, 3370 Seesen, De
DE4136883C2 (de) * 1991-11-09 1993-10-14 Gd Anker Gmbh & Co Kg Bohrrohr
US5888025A (en) * 1994-11-25 1999-03-30 Mai Pump Austria Gmbh Coupling for tie rods
DE19731055A1 (de) * 1997-07-19 1999-01-21 Dynamit Nobel Ag Vorrichtung und Verfahren zum Einformen einer Rillenstruktur in ein rohrförmiges Werkstück
JP4644416B2 (ja) * 2002-05-10 2011-03-02 北海製罐株式会社 缶胴の外形加工方法及びその装置
CN113000746B (zh) * 2021-02-24 2022-06-24 山东睿煜矿用材料加工有限公司 一种金属轴体加工用滚丝机螺纹成型机构

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1511C (nl) * 1912-02-03 1916-09-15 General Industries Co Verbetering eener werkwijze voor het vervaardigen van schroeflijnvormige gegolfde pijpen en de met toepassing dier verbeterde werkwijze vervaardigde schroeflijnvormig gegolfde pijp
DE1014064B (de) * 1952-09-01 1957-08-22 Rainer Isolierrohr Drossbach Gewinderollwalzen zur Herstellung von gerolltem Gewinde an den Enden von Blechrohren mit gefalzter Laengsnaht
FR1373178A (fr) * 1963-08-14 1964-09-25 M A G Materiels Agra Procédé perfectionné de filetage par repoussage à la molette, moyens de sa réalisation et éléments obtenus par ce procédé
DE2242035A1 (de) * 1972-08-26 1974-02-28 Eibes Kerb Konus Gmbh Verfahren zum herstellen von gewindebuechsen
EP0092010A1 (fr) * 1982-04-15 1983-10-26 Marc Maury Façonnage de tubes à turbulences pour échangeurs thermiques
AU1690083A (en) * 1982-07-15 1984-01-19 Heat Transfer Pty. Ltd. Forming helical grooves in tubes
EP0102407B1 (fr) * 1982-09-03 1986-02-19 Wieland-Werke Ag Tube à ailettes avec protubérances internes et procédé et dispositif de fabrication
DE3335163A1 (de) * 1983-09-28 1985-04-04 Hilti Ag, Schaan Spreizelement fuer huelsenfoermige spreizduebel
JPS61132230A (ja) * 1984-11-30 1986-06-19 Hitachi Cable Ltd 内面溝付き熱伝達管の製造装置
DE8528705U1 (de) * 1985-10-09 1985-11-21 kabelmetal electro GmbH, 3000 Hannover Vorrichtung zum Formen einer schraubenlinienförmigen Wellung

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007049606A1 (de) * 2007-10-16 2009-04-30 Karosan Gmbh Innovative Kanal- Und Rohrleitungssanierung Verfahren und Vorrichtung zum Einziehen eines aus Kurzrohren zusammengesetzten Rohrstranges in einen Bohrkanal
DE102007049606B4 (de) * 2007-10-16 2011-08-25 Karosan GmbH innovative Kanal- und Rohrleitungssanierung, 66557 Verfahren und Vorrichtung zum Einziehen eines aus Kurzrohren zusammengesetzten Rohrstranges in einen Bohrkanal

Also Published As

Publication number Publication date
AU1024688A (en) 1988-07-14
ES2041259T3 (es) 1993-11-16
CA1333652C (fr) 1994-12-27
DE3700758A1 (de) 1988-07-21
DE3700758C2 (fr) 1988-11-24
EP0274719A2 (fr) 1988-07-20
JPS63180334A (ja) 1988-07-25
ATE90891T1 (de) 1993-07-15
AU600070B2 (en) 1990-08-02
JPH069719B2 (ja) 1994-02-09
EP0274719A3 (en) 1989-12-20

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