US3884060A - Automatic flanging drill apparatus - Google Patents

Automatic flanging drill apparatus Download PDF

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Publication number
US3884060A
US3884060A US474659A US47465974A US3884060A US 3884060 A US3884060 A US 3884060A US 474659 A US474659 A US 474659A US 47465974 A US47465974 A US 47465974A US 3884060 A US3884060 A US 3884060A
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US
United States
Prior art keywords
flanging
drill bit
hole
drill
control valve
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
US474659A
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English (en)
Inventor
Leo Larikka
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Individual
Original Assignee
Individual
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Publication date
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Publication of US3884060A publication Critical patent/US3884060A/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, 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
    • B21C37/15—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
    • B21C37/292—Forming collars by drawing or pushing a rigid forming tool through an opening in the tube wall
    • 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
    • B21D19/00—Flanging or other edge treatment, e.g. of tubes
    • B21D19/08—Flanging or other edge treatment, e.g. of tubes by single or successive action of pressing tools, e.g. vice jaws
    • B21D19/088—Flanging or other edge treatment, e.g. of tubes by single or successive action of pressing tools, e.g. vice jaws for flanging holes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B51/00—Tools for drilling machines
    • B23B51/08—Drills combined with tool parts or tools for performing additional working
    • 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

  • Pins for forming the flange are movable in bores passing crosswise through the drill bit. When the rotating tip portion of the drill bit is withdrawn from the hole, the pins project from the drill bit to cause a flange encircling the hole to be formed.
  • the present invention concerns an automatic flanging drill apparatus for drilling a hole in the side of a tube and raising a flange encircling the hole, the apparatus comprising a drill bit and flanging means associated with this bit, which can be made, with the aid of an adjusting means, to protrude from the drill bit below the edges of the hole after the hole has been drilled, and means for withdrawing the flanging means from the hole while they are rotating.
  • a manually operated flanging drill apparatus of the type described is previously known from the same applicants US. Pat. No. 3,592,038.
  • the apparatus has proved highly useful and as a consequence there has arisen a need to automate the operation of the apparatus so that it becomes possible to make flanged holes in the sides of tubes with great speed in series production.
  • the first object of the invention is to accomplish an automatically and swiftly operating flanging drill apparatus.
  • FIG. 1 presents the drill bit portion of the apparatus in a vertical section
  • FIG. 2 shows the drill bit portion of the apparatus seen from above.
  • FIG. 3 shows a flanging drill apparatus according to the invention in elevational view.
  • FIG. 4 shows the section along the line lV-IV in FIG. 3,
  • FIG. 5 shows the section along the line VV in FIG. 3.
  • FIG. 6 shows schematically a double-acting pistonand-cylinder means belonging to the flanging drill apparatus.
  • the drill bit portion of the drill apparatus comprises a drill bit 1 and the flanging means 2.
  • the flanging means 2 consists of pins movable in bores passing crosswise through the drill bit. With the flanging means 2 retracted in the drill bit 1, a hole is drilled into the side of the tube until the stop enlargement 4 meets the edges of the hole. By subsequently turning the adjustment means 6 of the flanging means 2 about the drill shank 5, the flanging means 2 can be made to project from the drill bit, whereby when the rotating tip portion of the drill is withdrawn from the hole a flange 3 raised by the pins 2 and encircling the hole will be formed.
  • the adjustment means 6 has in its conical surface he- Iical grooves 7, in which the projections 8 of the flanging pins 2 engage. If follows that rotation of the adjustment means 6 about the drill shank 5 causes a move ment of the flanging pins 2 in their axial direction. At the same time the angle of rotation of the adjustment means 6 determines the amount by which the flanging pins 2 project.
  • the adjustment means 6 is normally held in a position in which the flanging pins 2 are retracted into the drill bit 1.
  • a stop 12 affixed to the drill bit shank 5 rests against a stop 10 affixed to the adjustment means 6 (FIG. 2).
  • the adjustment means 6 will rotate with reference to the drill bit 1,5 against the force of the spring 9 until the stop 12 meets the second stop 11 of the apparatus.
  • the adjustment screw 13 the angle may be accurately set through which the adjustment means 6 will rotate with reference to the drill bit 1,5. This enables the tolerance of the flange 3 to be accurately fixed.
  • the drill bit portion described above is mounted in the drill apparatus illustrated by FIG. 3.
  • an ancillary attachment 15 has been added, by the aid of which the rotational motion of the drill press is also translated into a feed motion of supporting legs 16, which are movable with reference to the frame of the apparatus. This is necessary so that after the hole has been drilled the drill apparatus can be pulled up from the hole, together with its expanded flanging means 2.
  • the feed motion of the supporting legs 16 has been accomplished in the manner illustrated in FIG. 4 so that a nut member 17, split to be bipartite, can be engaged with the rotating stem 18, which carries a left-handed thread.
  • the nut components 17 are guided in slideways l9 integrally connected with the supporting legs 16.
  • the spring 20 keeps the nut components 17 disengaged from the thread on the stem 18. This enables the legs 16 to move freely in their axial direction in their slideways in the frame of the apparatus 15.
  • the linkage mechanism moving the nut components 17 is in the position illustrated by dot-and-dash lines.
  • the feed motion of the legs 16 is engaged by pulling the wire 21, whereby the linkage mechanism seen in FIG. 4 causes the pins 22 to be pushed towards each other and the nut components 17 to be pressed around the threaded stem 18.
  • the pins 22 have been attached by threads to pins 23 turnable about a vertical axis, whereby the position of the nut components 17 can be accurately adjusted.
  • the path of motion of the fixing pins 23 deviates from the axial path of the pins 22, this has no practical significance because the movement of the pin 22 is minimal (for instance, 1 mm).
  • FIG. 5 a U-shaped friction brake 24 can be seen, by the aid of which a braking of the adjustment means 6 is affected for the purpose of expanding the flanging means 2 from the drill bit.
  • a pull exerted on the wire 25 the friction brake 24 is made to press against the periphery of the adjustment means 6.
  • FIG. 6 shows a hydraulically or pneumatically operating, double-acting piston-and-cylinder means, with the piston rod 26 of which the wires 21 and 25 are connected.
  • pressurised fluid is conducted into the part of the cylinder 27 on the side of the piston rod, the piston rod 26 will pull the wires 21 and 25, with the consequence that with the friction brake 24 operating the flanging pins 2 are expanded, immediately followed by the engagement of the feed motion of the supporting legs 16.
  • the control of the piston-and-cylinder means 26,27 takes place automatically by means of a two-position control valve 28, by the aid of which pressure can be alternatingly applied to both sides of the piston.
  • a two-position control valve 28 To the lower knob 31 of the control valve 28 an actuating rod 33 is connected over an adjusting screw 32, this rod being so dimensioned that when the drill bit is inserted to a sufficient depth enabling the flanging means 2 to be pushed in under the edges of the hole, the actuating rod 33 moves the valve 28 into a position in which pressure is applied to the connector 29 on the piston, rod side of the piston-and-cylinder means. It is advantageous in view of fast operation to use a pneumatic piston-and-cylinder means operated with compressed air, whereby a very rapid movement of the wires 21 and 25 is achieved.
  • Automatic flanging drill apparatus for drilling a hole in the side ofa tube and raising a flange (3) encircling the hole, said apparatus comprising a drill bit (1) and flanging means (2) connected with same, which can be made, with the aid of an adjustment means (6), to protrude from the drill bit, after the hole has been drilled, under the edges of the hole, and means (16,17,18) for withdrawing the drill bit and the flanging means (2) from the holewhile they are rotating, characterized in that the apparatus comprises a sensing means (33), which observes the position of the drill bit (1) when the flanging means can be pushed in under the edges of the hole, that said sensing means (33) ac tuates a control valve (28), which on the one hand controls the said adjustment means (24) for causing the flanging means (2) to protrude from the drill bit (1) and which on the other hand engages the action of the said means (16,17,18) for withdrawing the drill bit and the flanging means (2) from
  • a second sensing means 34
  • the apparatus comprises a second sensing means (34), which observes the position of the flanging means (2) and of the drill bit (1) with reference to the work piece when they have moved far enough for the performing of the flanging and which returns the control valve (28)'into a position which causes the feed motion of the supporting legs (16) to stop and causes retraction of the flanging means (2).
  • the flanging means (2) consist of pins moving in bores passing crosswise through the drill bit (1) and the motion of which is controlled by an adjustment means (6) rotatable about the drill shank within certain limits against the force of a spring (9) and in grooves (7) on the conical surface of which projections (8) of the flanging means engage, and that with the adjustment means (6) a friction brake (24) controlled by said control valve (28) is connected, by the aid of which friction brake the adjustment means (6) can be rotated with reference to the drill bit (1,5) against the force of the spring (9) in order to expand the flanging means (2) from the drill bit (1).
  • Apparatus according to claim 3 characterized in that the spring (9) is a spiral spring, one end of which is attached to the adjustment means (6) and the other end to the drill shank (5).
  • a first control means (3) is an actuating rod moving along with the frame (14,15) of the drill apparatus and which when it meets the surface of the work piece delivers an actuating pulse to the control valve (28).
  • Apparatus according to claim 1 characterized in that a second control means (34) has been attached to the movable supporting legs (16) and arranged to deliver to the control valve (28) a return pulse.
  • control valve (28) controls a double-acting piston-and-cylinder means, to the piston rod (26) of which wires (21,25) have been attached, one of which (21) connects with a linkage mechanism opening and closing a bipartite feed nut (17) and the other (25) connects with the friction brake (24) of the adjustment means(6).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Drilling And Boring (AREA)
  • Earth Drilling (AREA)
  • Punching Or Piercing (AREA)
US474659A 1973-05-30 1974-05-30 Automatic flanging drill apparatus Expired - Lifetime US3884060A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI1749/73A FI58879C (fi) 1973-05-30 1973-05-30 Automatisk flaensborranordning

Publications (1)

Publication Number Publication Date
US3884060A true US3884060A (en) 1975-05-20

Family

ID=8506108

Family Applications (1)

Application Number Title Priority Date Filing Date
US474659A Expired - Lifetime US3884060A (en) 1973-05-30 1974-05-30 Automatic flanging drill apparatus

Country Status (4)

Country Link
US (1) US3884060A (enrdf_load_stackoverflow)
JP (1) JPS5641334B2 (enrdf_load_stackoverflow)
DE (1) DE2426072C2 (enrdf_load_stackoverflow)
FI (1) FI58879C (enrdf_load_stackoverflow)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4413485A (en) * 1980-01-30 1983-11-08 G. A. Serlachius Oy Flange forming drill means
US4414835A (en) * 1980-01-30 1983-11-15 G. A. Serlachius Oy Flange forming drill apparatus
US4503693A (en) * 1981-03-10 1985-03-12 G.A. Serlachius Oy Apparatus for making a hole and a hole-surrounding collar in the side of a pipe
DE3621403A1 (de) * 1985-10-04 1987-04-09 Serlachius Oy Werkzeugeinsatz, werkzeug und arbeitsverfahren zur herstellung und zum flanschartigen anboerdeln einer lochung
EP1099492A3 (en) * 1999-11-12 2002-02-06 T-Drill Oy Automated collar-forming drill mechanism
US20080083315A1 (en) * 2006-10-05 2008-04-10 Steven Wasser Musical instrument tone hole forming tool and method
CN103611971A (zh) * 2013-11-13 2014-03-05 上海三达汽车配件有限公司 钻孔翻边一体化刀具
CN113182426A (zh) * 2021-05-13 2021-07-30 绍兴市荣迪机械有限公司 一种自动对位的三通管加工设备
US11192196B2 (en) * 2019-02-04 2021-12-07 EMUGE-Werk Richard Glimpel GmbH & Co. KG Fabrik für Präzisionswerkzeuge Drilling tool and method for producing a drilled hole
US11415031B2 (en) 2017-07-21 2022-08-16 Bosal Emission Control Systems Nv Method for forming a collar in a muffler housing
IT202200012752A1 (it) * 2022-06-16 2023-12-16 Simat S R L Macchina e procedimento per la produzione di prodotti tubolari piegati

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55145537A (en) * 1979-04-27 1980-11-13 Suzuki Motor Co Ltd Metal carrier catalyst
JPS57501833A (enrdf_load_stackoverflow) * 1980-10-22 1982-10-14
CN104476199B (zh) * 2014-12-11 2017-01-25 珠海市科箭自动化设备有限公司 一种钻孔拉边装置及自动钻孔拉边机

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3817071A (en) * 1972-03-20 1974-06-18 Virax Sa Device for fashioning a flange on a wall, and more particularly on a pipe wall

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3817071A (en) * 1972-03-20 1974-06-18 Virax Sa Device for fashioning a flange on a wall, and more particularly on a pipe wall

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4413485A (en) * 1980-01-30 1983-11-08 G. A. Serlachius Oy Flange forming drill means
US4414835A (en) * 1980-01-30 1983-11-15 G. A. Serlachius Oy Flange forming drill apparatus
US4503693A (en) * 1981-03-10 1985-03-12 G.A. Serlachius Oy Apparatus for making a hole and a hole-surrounding collar in the side of a pipe
DE3621403A1 (de) * 1985-10-04 1987-04-09 Serlachius Oy Werkzeugeinsatz, werkzeug und arbeitsverfahren zur herstellung und zum flanschartigen anboerdeln einer lochung
DE3621403C2 (de) * 1985-10-04 1999-09-02 T Drill Oy Werkzeugeinsatz, Werkzeug und Arbeitsverfahren zur Herstellung und zum flanschartigen Anbördeln einer Lochung
EP1099492A3 (en) * 1999-11-12 2002-02-06 T-Drill Oy Automated collar-forming drill mechanism
US6427508B1 (en) * 1999-11-12 2002-08-06 T-Drill Oy Automated collar-forming drill mechanism
US7420109B2 (en) * 2006-10-05 2008-09-02 Verne Q. Powell Flutes, Inc. Musical instrument tone hole forming tool and method
US20080083315A1 (en) * 2006-10-05 2008-04-10 Steven Wasser Musical instrument tone hole forming tool and method
WO2008045221A3 (en) * 2006-10-05 2008-09-25 Verne Q Powell Flutes Inc Musical instrument tone hole forming tool and method
CN103611971A (zh) * 2013-11-13 2014-03-05 上海三达汽车配件有限公司 钻孔翻边一体化刀具
US11415031B2 (en) 2017-07-21 2022-08-16 Bosal Emission Control Systems Nv Method for forming a collar in a muffler housing
US11192196B2 (en) * 2019-02-04 2021-12-07 EMUGE-Werk Richard Glimpel GmbH & Co. KG Fabrik für Präzisionswerkzeuge Drilling tool and method for producing a drilled hole
CN113182426A (zh) * 2021-05-13 2021-07-30 绍兴市荣迪机械有限公司 一种自动对位的三通管加工设备
CN113182426B (zh) * 2021-05-13 2022-01-14 绍兴市荣迪机械有限公司 一种自动对位的三通管加工设备
IT202200012752A1 (it) * 2022-06-16 2023-12-16 Simat S R L Macchina e procedimento per la produzione di prodotti tubolari piegati

Also Published As

Publication number Publication date
DE2426072A1 (de) 1974-12-19
DE2426072C2 (de) 1982-09-16
FI58879C (fi) 1981-05-11
FI174973A7 (enrdf_load_stackoverflow) 1974-12-01
JPS5641334B2 (enrdf_load_stackoverflow) 1981-09-28
JPS5068953A (enrdf_load_stackoverflow) 1975-06-09
FI58879B (fi) 1981-01-30

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