EP0057039A1 - Fliessformbohrer zum Versehen von Blechmaterial mit Löchern - Google Patents

Fliessformbohrer zum Versehen von Blechmaterial mit Löchern Download PDF

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Publication number
EP0057039A1
EP0057039A1 EP82200068A EP82200068A EP0057039A1 EP 0057039 A1 EP0057039 A1 EP 0057039A1 EP 82200068 A EP82200068 A EP 82200068A EP 82200068 A EP82200068 A EP 82200068A EP 0057039 A1 EP0057039 A1 EP 0057039A1
Authority
EP
European Patent Office
Prior art keywords
drill
contour
polygon
provision
cross
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
EP82200068A
Other languages
English (en)
French (fr)
Other versions
EP0057039B1 (de
Inventor
Aloysius Joseph Hoogenboom
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.)
FLOWDRILL BV
Original Assignee
FLOWDRILL BV
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 FLOWDRILL BV filed Critical FLOWDRILL BV
Priority to AT82200068T priority Critical patent/ATE7368T1/de
Publication of EP0057039A1 publication Critical patent/EP0057039A1/de
Application granted granted Critical
Publication of EP0057039B1 publication Critical patent/EP0057039B1/de
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
    • B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
    • B21J5/063—Friction heat forging
    • B21J5/066—Flow drilling
    • 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
    • B21D31/00—Other methods for working sheet metal, metal tubes, metal profiles
    • B21D31/02—Stabbing or piercing, e.g. for making sieves

Definitions

  • the invention relates to a flow drill for the provision through the intermediary of friction heat and pressure of a hole surrounded by a collar in metal sheet or metal tube walls, said drill having a shaft and a smooth tapering operative end, the cross-section of said operative end being based on a regular polygon and has a convex contour situated within the circle circumscribing the body hole.
  • the cross-section of the operative drill end is a square, having rounded apexes. It has been found, that such a drill is suitable for the provision of holes in the softer metals such as aluminum and copper or brass, but for the provision of holes in harder metals, such as bronze and steel offers not so good results and will wear already after having made a relatively small number of holes.
  • the flow drill according to the dutch patent 160499 is based in its shape of the cross-section of the operative part on an equilateral triangle, having apex radiusses comprising two arcs merging in the apex and having different radius of curvature and different length.
  • the contour likewise may be in the shape of an arc, but having a larger radius of curvature, or by a straight line.
  • the apexes of the triangle are too much accentuated due to said transitions in radius of curvature, whereby instability in the operation of the drill may occur, particularly if said drill is used for flaring tube ends. Thereby said ends are formed into a somewhat square instead of a circular shape.
  • the invention aims at providing an improved flow drill not having the above mentioned disadvantages.
  • the basic shape i of the contour is a triangle. However, it may also be a square, pentagon or hexagon.
  • the embodiments preferred in practice are drills based on a square since their operational stability is greater than that of drills based on a triangle, while those drills based on a pentagon or hexagon too closely approximate the circular shape.
  • no cams are necessary.
  • the drill may be ground in accordance with the contour according to the formula on a numerically controlled grinding machine.
  • the drill as shown has a first conical part 3, having a pointed centering portion 2, a prismatic second part 4, a collar 5 having a shoulder 6 and a shaft 7 by means of which the drill may be secured in a drilling machine head.
  • the drill according to the invention which is suitable for making holes in copper, aluminum, bronze and steel, may be used in both rotational directions, remains free of material growth or adhesion, with a maximum in stability and life and has an operative portion 3 and 4, the cross-section of which has the contour according to the formula, examples of which are shown in fig. 2 and 3.
  • n the number of sides or apexes of the polygon on which the contour is based is indicated by n
  • e indicates the difference between the maximum and the minimum value of the radius vector R in the relative contour
  • 6 indicates the so called modulation factor and determines the radius angle in the points of the curve.
  • 6 is usually beteen 0 and 0.9.
  • a is the so-called non-symmetry factor. If a is not equal to 0, the contour is composed of n equal parts each being non-symmetrical relative to the radius vector, situated between both end points from that contour part.
  • the left column of contours as shown in fig. 3 is relative to contours based on a triangle, the right column shows contours based on a square.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Drilling Tools (AREA)
  • Laminated Bodies (AREA)
EP82200068A 1981-01-22 1982-01-19 Fliessformbohrer zum Versehen von Blechmaterial mit Löchern Expired EP0057039B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82200068T ATE7368T1 (de) 1981-01-22 1982-01-19 Fliessformbohrer zum versehen von blechmaterial mit loechern.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL8100304A NL8100304A (nl) 1981-01-22 1981-01-22 Vloeiboor voor het maken van gaten in plaatmateriaal.
NL8100304 1981-01-22

Publications (2)

Publication Number Publication Date
EP0057039A1 true EP0057039A1 (de) 1982-08-04
EP0057039B1 EP0057039B1 (de) 1984-05-09

Family

ID=19836903

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82200068A Expired EP0057039B1 (de) 1981-01-22 1982-01-19 Fliessformbohrer zum Versehen von Blechmaterial mit Löchern

Country Status (4)

Country Link
EP (1) EP0057039B1 (de)
AT (1) ATE7368T1 (de)
DE (1) DE3260137D1 (de)
NL (1) NL8100304A (de)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0150518A1 (de) * 1984-01-30 1985-08-07 Flowdrill B.V. Fliessbohrwerkzeug, insbesondere zur Verwendung in einer Handbohrmaschine
GB2227536A (en) * 1988-11-22 1990-08-01 Stott Benham Limited Gas distribution tube
EP0740035A1 (de) * 1995-04-26 1996-10-30 N.V. Bekaert S.A. Hohler Pfosten und dazugehörigens Befestigungselement
EP0913493A1 (de) * 1996-04-15 1999-05-06 BOEING NORTH AMERICAN, Inc. Reibbohrverfahren für Aluminium-Legierungen
FR2850889A1 (fr) * 2003-02-07 2004-08-13 Inter Meca Dispositif utilise pour l'ogivage, le fluotournage, ou le fluopercage de pieces metalliques de section ronde et/ou ovoide
DE102004045265B4 (de) * 2004-09-11 2006-08-31 Institut für Füge- und Oberflächentechnik GmbH Verfahren und Vorrichtung zur Verbindung mindestens zweier flächiger Werkstücke
DE102006034585A1 (de) * 2006-07-26 2008-01-31 Ejot Gmbh & Co. Kg Loch- und gewindeformende Schraube
JP2008229721A (ja) * 2007-03-21 2008-10-02 Kofukin Seimitsu Kogyo (Shenzhen) Yugenkoshi 穴部を具備する成型品、及びそのバーリング加工方法
RU2335370C2 (ru) * 2006-10-30 2008-10-10 Государственное образовательное учреждение высшего профессионального образования "Алтайский государственный технический университет им. И.И. Ползунова" (АлтГТУ) Инструмент для пластического сверления
RU2492972C2 (ru) * 2010-11-09 2013-09-20 Государственное образовательное учреждение высшего профессионального образования Самарский государственный технический университет Инструмент для формирования отверстий методом пластического сверления
US12415192B2 (en) 2021-04-20 2025-09-16 Texas Transland LLC Stainless steel spray boom for aerial spraying

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL160499C (nl) * Geffen Tech Adviesbureau Bv Doorn voor het maken van een door een kraag omgeven gat in een metalen plaat of wand van een metalen buis.
FR1189384A (fr) * 1957-12-31 1959-10-02 Houilleres Bassin Du Nord Procédé et outil de formation de collets, et collets résultant de ce procédé
US3195156A (en) * 1961-06-27 1965-07-20 Res Engineering And Mfg Inc Method of producing thread swaging devices
DE2552665B2 (de) * 1974-11-28 1979-03-01 Technisch Handels- En Adviesbureau Van Geffen B.V., Apeldoorn (Niederlande) Schnell um seine Achse drehbarer Dorn zum Bilden eines Loches in einer metallenen Ratte oder der Wand eines metallenen Rohres

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL160499C (nl) * Geffen Tech Adviesbureau Bv Doorn voor het maken van een door een kraag omgeven gat in een metalen plaat of wand van een metalen buis.
FR1189384A (fr) * 1957-12-31 1959-10-02 Houilleres Bassin Du Nord Procédé et outil de formation de collets, et collets résultant de ce procédé
US3195156A (en) * 1961-06-27 1965-07-20 Res Engineering And Mfg Inc Method of producing thread swaging devices
DE2552665B2 (de) * 1974-11-28 1979-03-01 Technisch Handels- En Adviesbureau Van Geffen B.V., Apeldoorn (Niederlande) Schnell um seine Achse drehbarer Dorn zum Bilden eines Loches in einer metallenen Ratte oder der Wand eines metallenen Rohres

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0150518A1 (de) * 1984-01-30 1985-08-07 Flowdrill B.V. Fliessbohrwerkzeug, insbesondere zur Verwendung in einer Handbohrmaschine
GB2227536A (en) * 1988-11-22 1990-08-01 Stott Benham Limited Gas distribution tube
EP0740035A1 (de) * 1995-04-26 1996-10-30 N.V. Bekaert S.A. Hohler Pfosten und dazugehörigens Befestigungselement
BE1009332A3 (nl) * 1995-04-26 1997-02-04 Bekaert Sa Nv Holle paal met daarbijbehorend bevestigingselement.
EP0913493A1 (de) * 1996-04-15 1999-05-06 BOEING NORTH AMERICAN, Inc. Reibbohrverfahren für Aluminium-Legierungen
EP1447152A1 (de) * 2003-02-07 2004-08-18 Inter Meca (Société à responsabilité limitée) Vorrichtung zum spitzbogenförmig Formen ,zum Fliessdrehen, oder zum Fliessstanzen von metallischen Werkstücken mit kreisförmigem oder eiförmigem Querschnitt
FR2850889A1 (fr) * 2003-02-07 2004-08-13 Inter Meca Dispositif utilise pour l'ogivage, le fluotournage, ou le fluopercage de pieces metalliques de section ronde et/ou ovoide
DE102004045265B4 (de) * 2004-09-11 2006-08-31 Institut für Füge- und Oberflächentechnik GmbH Verfahren und Vorrichtung zur Verbindung mindestens zweier flächiger Werkstücke
DE102006034585A1 (de) * 2006-07-26 2008-01-31 Ejot Gmbh & Co. Kg Loch- und gewindeformende Schraube
RU2335370C2 (ru) * 2006-10-30 2008-10-10 Государственное образовательное учреждение высшего профессионального образования "Алтайский государственный технический университет им. И.И. Ползунова" (АлтГТУ) Инструмент для пластического сверления
JP2008229721A (ja) * 2007-03-21 2008-10-02 Kofukin Seimitsu Kogyo (Shenzhen) Yugenkoshi 穴部を具備する成型品、及びそのバーリング加工方法
RU2492972C2 (ru) * 2010-11-09 2013-09-20 Государственное образовательное учреждение высшего профессионального образования Самарский государственный технический университет Инструмент для формирования отверстий методом пластического сверления
US12415192B2 (en) 2021-04-20 2025-09-16 Texas Transland LLC Stainless steel spray boom for aerial spraying

Also Published As

Publication number Publication date
ATE7368T1 (de) 1984-05-15
DE3260137D1 (en) 1984-06-14
NL8100304A (nl) 1982-08-16
EP0057039B1 (de) 1984-05-09

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