WO2019049078A1 - Outil multi-opérations de perforation par friction - Google Patents

Outil multi-opérations de perforation par friction Download PDF

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Publication number
WO2019049078A1
WO2019049078A1 PCT/IB2018/056842 IB2018056842W WO2019049078A1 WO 2019049078 A1 WO2019049078 A1 WO 2019049078A1 IB 2018056842 W IB2018056842 W IB 2018056842W WO 2019049078 A1 WO2019049078 A1 WO 2019049078A1
Authority
WO
WIPO (PCT)
Prior art keywords
segment
drilling
friction
calibration
tool according
Prior art date
Application number
PCT/IB2018/056842
Other languages
English (en)
Portuguese (pt)
Inventor
João Paulo DAVIM TAVARES DA SILVA
Carlos Henrique LAURO
António José FONSECA FESTAS
Original Assignee
Universidade De Aveiro
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 Universidade De Aveiro filed Critical Universidade De Aveiro
Priority to ES18789472T priority Critical patent/ES2923109T3/es
Priority to EP18789472.0A priority patent/EP3680040B1/fr
Publication of WO2019049078A1 publication Critical patent/WO2019049078A1/fr

Links

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

Definitions

  • the present disclosure relates to a multi-operation tool of drilling by friction that allows to perform, in the same drilling, three different final operations: drilling, calibrating and threading.
  • the friction drilling tool of the present disclosure has, in one embodiment, a drilling or self-drilling segment, a calibration segment, a thread-opening segment and a stop segment.
  • the calibration segment allows calibrated holes to be obtained, if this is the final objective, or to prepare the hole for a thread-opening operation in the material drained on the walls of the already calibrated hole, depending on the user's choice.
  • CN265257 discloses a friction drilling tool, however it is limited to drilling holes.
  • US2017106430 discloses a friction drilling tool in which it is a screw using the friction drilling method for drilling and threading. In general, existing tools only stick and / or thread.
  • Friction drilling is a method which utilizes a hardened conical tipped cylindrical tool which when pressed in rotation against the workpiece, the friction generated between the workpiece and the tool allows generating the necessary heat to reduce the mechanical strength of the metal material, allowing its conformation by flow.
  • the present disclosure relates to a friction drilling method which utilizes a cylindrical hardened conical tip tool pressed in rotation against the workpiece.
  • the friction generated between the part and the tool allows to generate the necessary heat to reduce the mechanical resistance of the metallic material, allowing its conformation by flow.
  • the present disclosure features a cylindrical friction drilling tool which contains a friction or self-drilling segment, a calibration segment, a thread-opening segment and optionally a stop segment.
  • the friction drilling is applied to thin plates, tubes or parts of reduced thickness mainly of aluminum and steel.
  • This technology allows to substantially reduce the time of manufacture in an ecological way because it does not produce shavings.
  • This technology can be applied to CNC machines, with appropriate adaptations.
  • the present description relates to a multi-operations friction drilling tool characterized in that it can use three active functions, drilling, calibration and threading.
  • the calibration segment allows to obtain calibrated holes if this is the final objective or to prepare the hole for a final threading operation in the material drained on the walls of the already calibrated hole, depending on the user's choice of the depth of operation of the tool, respectively the depth corresponding to the calibration and drilling segments and the depth corresponding to the threads, calibration and drilling segments.
  • a multi-operating friction drilling tool which sequentially comprises a support body or segment, a thread aperture segment, a calibration segment of predetermined diameter and a friction or self-drilling segment perforating
  • One embodiment comprises a cylindrically shaped stop-spacer segment having a larger diameter than the remaining segments.
  • the friction-drilling or self-drilling segment has a pointed shape, in particular a tip with a particularly doubly conical configuration.
  • the friction self-piercing segment has a conical tip or a rounded crown-shaped tip.
  • the friction self-piercing segment has a tip and, adjacent to said tip, a substantially frustoconical shaped subsegment, substantially hyperboloid or substantially trumpet shaped shape.
  • said subsegment is substantially hyperboloid in shape.
  • the calibration segment has a length of at least two times the calibration diameter.
  • the length of the drilling segment or self-drilling segment is identical to the length of the calibration segment.
  • the length of the thread aperture segment is identical to the length of the calibration segment.
  • One embodiment comprises immediately following one another, i.e. adjacent and sequentially, the thread aperture segment, the calibration segment and the friction (or self-drilling) segment.
  • One embodiment comprises immediately following one another, i.e. adjacent and sequentially, the stop-spacer segment, the thread-opening segment, the calibration segment and the friction-drilling segment.
  • Figure 1 shows the schematic representation of a multi-operations friction drilling tool, wherein:
  • Figure 2 shows the representation of a multi-operations friction drilling tool application.
  • the present disclosure relates to a multi-operations friction drilling tool which allows three different final operations to be performed in the same drilling: drilling, calibrating and threading.
  • the friction drilling tool of the present disclosure has a drilling segment, a calibration segment, a thread-opening segment and a stop segment.
  • the calibration segment allows calibrated holes to be obtained if this is the final objective or to prepare the hole for a thread-opening operation in the material drained on the walls of the already calibrated hole.
  • Figure 1 shows the schematic representation of the multi-operating friction drilling tool constituted by a cylindrical shaped body or support segment 1, by a drill segment 5 pointedly with the double-tapered hardened tip which when pressed in rotation against the material in question creates sufficient friction for drilling a calibration segment 4 of cylindrical shape containing a specific diameter to ensure calibration of the hole, a segment for opening thread 3 in the specific shape for threaded aperture in pre-punched and calibrated material and a cylindrically shaped stopper or spacer 2 having a larger diameter relative to the remaining segments.
  • Figure 2 illustrates the sequential representation of a possible application of a multi-operations friction drilling tool, where the beginning of the frictional drilling by the drilling segment (A), (B) and (C). Subsequently and due to the existence of the calibration segment, the calibration of the hole (D) is given. If desired at this stage, we can remove the tool to have a threaded bore without thread as shown (E). If a calibrated and threaded bore (G) is desired, continue the tool until it reaches the threaded thread segment (F). The stop segment or spacer limits the stroke of the tool (F).
  • the calibration zone allows calibrated holes to be obtained, if that is the ultimate goal, or to prepare the bore for a final tapping operation.
  • the multi-friction drilling tool begins to drill the hole using the special double-tapered tip.
  • the friction generated between the workpiece and the tool allows to generate the necessary heat to reduce the mechanical resistance of the material, allowing the conformation to flow out of the hole.
  • the calibration segment is then operated to obtain calibrated holes, if that is the final objective, or to prepare the bore for an operation 4, and thereafter, if desired, operates the final threading segment 3 in the material drained on the walls of the hole already calibrated.
  • the operation can continue until the stop-gap segment 2 is reached.
  • the drilling tool described in the present disclosure can be used for drilling / calibration / threading of thin sheets, pipes, thin-walled parts of metals (aluminum, steels, etc.), in particular drilling / calibration / Threading of thin sheets of aluminum.
  • the drilling tool described in the present disclosure has advantages both at the time of manufacture and at an ecological level, as it does not produce chips or outer burr, allowing a more efficient calibrated or threaded bore to be executed.
  • An embodiment of the friction drilling multi-operation tool sequentially comprises a plurality of distinct axial segments: a support segment 1, a thread aperture segment 3, a predetermined diameter calibration segment 4 and a self- friction drilling 5.
  • One embodiment comprises a cylindrical stop-gap segment 2 having a larger diameter than the remaining tool segments 3, 4, 5.
  • the friction self-drilling segment 5 has a conical tip or a rounded crown-shaped tip.
  • the friction self-piercing segment 5 has a tip and, adjacent to said tip, a substantially frustoconical shaped subsegment, substantially hyperboloid or substantially trumpet shaped shape.
  • said subsegment is substantially hyperboloid in shape.
  • the calibration segment 4 has a length of at least two times the diameter of the calibration segment.
  • the length of the friction self-drilling segment 5 is identical to the length of the calibration segment 4. In one embodiment, the length of the thread aperture segment 3 is identical to the length of the calibration segment 4.
  • One embodiment comprises, sequentially adjacent: the thread aperture segment 3, the calibration segment 4 and the friction self-drilling segment 5.
  • An embodiment comprises, adjacently and sequentially: the stop-spacer segment 2, the thread-opening segment 3, the calibration segment 4 and the friction self-drilling segment 5.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Drilling Tools (AREA)
  • Drilling And Boring (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)

Abstract

L'invention concerne un outil de perforation par friction multi-opérations, permettant d'effectuer, dans une même perforation, trois opérations finales différentes : perçage, calibrage et vissage. L'outil de perforation par friction de la présente invention présente un segment auto-perforant par friction, un segment de calibrage, un segment d'ouverture de filet et un segment de garniture. Le segment de calibrage permet d'obtenir des trous calibrés, si tel est l'objectif final, ou de préparer un trou pour une opération d'ouverture de filet dans le matériau drainé sur les parois du trou déjà calibré, selon le souhait de d'utilisateur. Un mode de réalisation de cet outil multi-opérations de perforation par friction comprend, séquentiellement, une pluralité de segments axiaux distincts : un segment de support, un segment d'ouverture de filet, un segment de calibrage de diamètre prédéterminé et un segment auto-perforant par friction, pouvant comporter un segment garniture-espaceur de forme cylindrique.
PCT/IB2018/056842 2017-09-07 2018-09-07 Outil multi-opérations de perforation par friction WO2019049078A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
ES18789472T ES2923109T3 (es) 2017-09-07 2018-09-07 Herramienta de taladrado por fricción multitarea
EP18789472.0A EP3680040B1 (fr) 2017-09-07 2018-09-07 Outil de fluo-percage multi-opérations

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PT110280 2017-09-07
PT11028017 2017-09-07

Publications (1)

Publication Number Publication Date
WO2019049078A1 true WO2019049078A1 (fr) 2019-03-14

Family

ID=63915073

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2018/056842 WO2019049078A1 (fr) 2017-09-07 2018-09-07 Outil multi-opérations de perforation par friction

Country Status (3)

Country Link
EP (1) EP3680040B1 (fr)
PT (1) PT2019049078B (fr)
WO (1) WO2019049078A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021129556A1 (de) 2021-02-22 2022-08-25 GM Global Technology Operations LLC Hybrid-gewindeschneider mit reibahle und gewindeschneidabschnitt
US11465221B2 (en) 2020-12-28 2022-10-11 GM Global Technology Operations LLC Hybrid threading tool with cutting portion and rolling portion

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11577331B2 (en) * 2020-12-28 2023-02-14 Gm Global Technology Operatins Llc Methods of manufacturing part with hole having cut threads

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3429171A (en) * 1965-10-21 1969-02-25 Joseph J Feher Radius spin drill
WO2005089973A1 (fr) * 2004-03-19 2005-09-29 Gühring, Jörg Procede de perçage de moule d'intrusion avec production simultanee d'un filetage et outil de perçage de moule d'intrusion destine a la mise en oeuvre de ce procede
DE102012216302A1 (de) * 2012-09-13 2014-03-13 Federal-Mogul Sealing Systems Gmbh Herstellungsverfahren für einen Stopper und Flachdichtung mit Stopper

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3909725C1 (en) * 1989-03-23 1990-09-06 Jaeger Eberhard Gmbh Hole- and thread-forming screw

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3429171A (en) * 1965-10-21 1969-02-25 Joseph J Feher Radius spin drill
WO2005089973A1 (fr) * 2004-03-19 2005-09-29 Gühring, Jörg Procede de perçage de moule d'intrusion avec production simultanee d'un filetage et outil de perçage de moule d'intrusion destine a la mise en oeuvre de ce procede
DE102012216302A1 (de) * 2012-09-13 2014-03-13 Federal-Mogul Sealing Systems Gmbh Herstellungsverfahren für einen Stopper und Flachdichtung mit Stopper

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11465221B2 (en) 2020-12-28 2022-10-11 GM Global Technology Operations LLC Hybrid threading tool with cutting portion and rolling portion
DE102021129556A1 (de) 2021-02-22 2022-08-25 GM Global Technology Operations LLC Hybrid-gewindeschneider mit reibahle und gewindeschneidabschnitt
CN114951850A (zh) * 2021-02-22 2022-08-30 通用汽车环球科技运作有限责任公司 带有扩孔器部分和螺纹切割部分的混合螺纹丝锥
US11597023B2 (en) 2021-02-22 2023-03-07 Gm Global Technology Operatins Llc Hybrid threading tap with reamer portion and thread cutting portion
CN114951850B (zh) * 2021-02-22 2024-01-19 通用汽车环球科技运作有限责任公司 带有扩孔器部分和螺纹切割部分的混合螺纹丝锥

Also Published As

Publication number Publication date
PT2019049078B (pt) 2023-08-02
EP3680040B1 (fr) 2022-04-27
EP3680040A1 (fr) 2020-07-15

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