WO2019049078A1 - Multi-operation friction drilling tool - Google Patents

Multi-operation friction drilling tool 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
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WO
WIPO (PCT)
Prior art keywords
segment
drilling
friction
calibration
tool according
Prior art date
Application number
PCT/IB2018/056842
Other languages
French (fr)
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/en
Priority to EP18789472.0A priority patent/EP3680040B1/en
Publication of WO2019049078A1 publication Critical patent/WO2019049078A1/en

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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

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.

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

Abstract

A multi-operation friction drilling tool allows three different final operations to be performed during the same drilling: drilling, calibrating and threading. The friction drilling tool of the present disclosure has a friction self-piercing segment, a calibration segment, a thread cutting segment and a stop segment. The calibration segment allows calibrated holes to be obtained, if that is the final objective, or a hole to be prepared for a thread cutting operation in the material deformed by yielding on the walls of the already calibrated hole, depending on the user's choice. An embodiment of the multi-operation friction drilling tool sequentially comprises a plurality of distinct axial segments: a support segment, a thread cutting segment, a calibration segment of predetermined diameter and a friction self-piercing segment, and may comprise a cylindrical stop-spacer segment.

Description

D E S C R I Ç Ã O  DESCRIPTION
FERRAMENTA MULTI-OPERAÇÃO DE FURAÇÃO POR ATRITO MULTI-DRILLING TOOL FOR TRANSPORTATION
Domínio técnico Technical domain
[0001] A presente divulgação refere-se a uma ferramenta multi-operação de furação por atrito que permite efetuar, numa mesma furação, três operações finais diferentes: furar, calibrar e roscar. 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.
[0002] A ferramenta de furação por atrito da presente divulgação tem, numa realização, um segmento de furação ou auto-perfurante, um segmento de calibração, um segmento para abrir rosca e um segmento de batente. O segmento de calibração permite obter furos calibrados, caso seja esse o objetivo final, ou preparar o furo para uma operação de abertura de rosca no material escoado nas paredes do furo já calibrado, consoante escolha do utilizador. 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.
Antecedentes Background
[0003] O documento CN265257 divulga uma ferramenta de furar por atrito, no entanto está limitada a fazer furos por atrito. O documento US2017106430 divulga uma ferramenta de furar por atrito em que se trata de um parafuso que utiliza o método da furação por atrito para abrir furo e roscar. De modo geral, as ferramentas já existentes apenas furam e/ou roscam. 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.
[0004] A furação por atrito é um método que utiliza uma ferramenta cilíndrica de ponta cónica endurecida que quando pressionada em rotação contra a peça, o atrito gerado entre a peça e a ferramenta permite gerar calor necessário para reduzir a resistência mecânica do material metálico, permitindo a sua conformação por escoamento. 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.
[0005] A furação por atrito aplica-se em chapas finas, tubos ou peças de reduzida espessura sobretudo de alumínio e aço. Esta tecnologia permite diminuir substancialmente o tempo de fabrico de um modo ecológico pois não produz aparas. [0006] Estes factos são descritos de forma a ilustrar o problema técnico resolvido pelas realizações do presente documento. [0005] The friction drilling is applied to thin plates, pipes 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. These facts are described in order to illustrate the technical problem solved by the embodiments of the present document.
Descrição Geral General description
[0007] A presente descrição refere-se a um método de furação por atrito que utiliza uma ferramenta cilíndrica de ponta cónica endurecida pressionada em rotação contra a peça. O atrito gerado entre a peça e a ferramenta permite gerar o calor necessário para reduzir a resistência mecânica do material metálico, permitindo a sua conformação por escoamento. A presente descrição apresenta uma ferramenta cilíndrica de furação por atrito que contém um segmento de furação por atrito ou auto-perfurante, um segmento de calibração, um segmento de abrir rosca e, opcionalmente, um segmento de batente. 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.
[0008] A furação por atrito aplica-se em chapas finas, tubos ou peças de reduzida espessura sobretudo de alumínio e aço. Esta tecnologia permite diminuir substancialmente o tempo de fabrico de um modo ecológico pois não produz aparas. Esta tecnologia pode ser aplicada em máquinas CNC, eventualmente com as devidas adaptações. [0008] 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.
[0009] A presente descrição diz respeito a uma ferramenta de furar por atrito multi- operações caracterizada por poder utilizar três funções ativas, furação, calibração e roscagem. O segmento de calibração permite obter furos calibrados, caso seja esse o objetivo final ou preparar o furo para uma operação de roscagem final no material escoado nas paredes do furo já calibrado, consoante opção do utilizador pela profundidade utilizada de operação da ferramenta, respectivamente a profundidade correspondente aos segmentos de calibração e de furação e a profundidade correspondente aos segmentos de abertura de rosca, calibração e de furação. 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.
[0010] Com a presente ferramenta acaba a necessidade de mudar de ferramenta para calibrar ou roscar o furo - se for para calibrar, basta terminar a operação depois de calibrar e antes de atingir o segmento de roscagem; se for para roscagem, terminar a operação depois calibrar e roscar nos respetivos segmentos. [0011] Descreve-se uma ferramenta de furar por atrito multi-operações que compreende, sequencialmente, um corpo ou segmento de suporte, um segmento de abertura de rosca, um segmento de calibração com diâmetro predeterminado e um segmento de furação por atrito ou auto perfurante. With the present tool, the need to change tools to calibrate or tap the hole ends - if it is to calibrate, it is enough to finish the operation after calibrating and before reaching the threading segment; if it is for threading, terminate the operation after calibrating and threading in the respective segments. A multi-operating friction drilling tool is described 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
[0012] Uma realização compreende um segmento batente-espaçador de forma cilíndrica que tem um diâmetro maior do que os restantes segmentos. One embodiment comprises a cylindrically shaped stop-spacer segment having a larger diameter than the remaining segments.
[0013] Numa realização, o segmento de furação por atrito ou auto-perfurante tem forma pontiaguda, em particular uma ponta com uma configuração particular duplamente cónica. In one embodiment, the friction-drilling or self-drilling segment has a pointed shape, in particular a tip with a particularly doubly conical configuration.
[0014] Numa realização, o segmento auto-perfurante por atrito tem uma ponta cónica ou uma ponta em forma de coroa arredondada. In one embodiment, the friction self-piercing segment has a conical tip or a rounded crown-shaped tip.
[0015] Numa realização, o segmento auto-perfurante por atrito tem uma ponta e, adjacente à referida ponta, um subsegmento de forma substancialmente frusto- cónica, de forma substancialmente hiperboloide ou substancialmente de forma de uma trompeta. In one embodiment, 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.
[0016] Numa realização, o referido subsegmento tem forma substancialmente hiperboloide. In one embodiment, said subsegment is substantially hyperboloid in shape.
[0017] Numa realização, o segmento de calibração tem um comprimento de pelo menos de duas vezes o diâmetro de calibração. In one embodiment, the calibration segment has a length of at least two times the calibration diameter.
[0018] Numa realização, o comprimento do segmento de furação ou auto-perfurante é idêntico ao comprimento do segmento de calibração. In one embodiment, the length of the drilling segment or self-drilling segment is identical to the length of the calibration segment.
[0019] Numa realização, o comprimento do segmento de abertura de rosca é idêntico ao comprimento do segmento de calibração. In one embodiment, the length of the thread aperture segment is identical to the length of the calibration segment.
[0020] Uma realização compreende, imediatamente um após o outro, ou seja adjacentes e sequencialmente, o segmento de abertura de rosca, o segmento de calibração e o segmento de furação por atrito (ou auto-perfurante). [0021] Uma realização compreende, imediatamente um após o outro, ou seja adjacentes e sequencialmente, o segmento batente-espaçador, o segmento de abertura de rosca, o segmento de calibração e o segmento de furação por atrito. 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.
Breve descrição das figuras Brief description of the figures
[0022] Para uma mais fácil compreensão, juntam-se em anexo as figuras, às quais representam realizações preferenciais que não pretendem limitar o objeto da presente descrição. [0022] For ease of understanding, the figures are attached, to which they represent preferred embodiments which are not intended to limit the object of the present disclosure.
[0023] A figura 1 ilustra a representação esquemática de uma ferramenta de furar por atrito multi-operações, em que: Figure 1 shows the schematic representation of a multi-operations friction drilling tool, wherein:
1. representa o corpo ou segmento de suporte ou haste;  1. represents the body or support segment or rod;
2. representa o segmento do batente (espaçador);  2. represents the stop segment (spacer);
3. representa o segmento para abrir rosca;  3. represents the segment to open thread;
4. representa o segmento de calibração;  4. represents the calibration segment;
5. representa o segmento de furação (ponta), ou auto-perfurante.  5. represents the drilling segment (tip), or self-drilling.
[0024] A figura 2 ilustra a representação de uma aplicação da ferramenta de furar por atrito multi-operações. Figure 2 shows the representation of a multi-operations friction drilling tool application.
Descrição detalhada Detailed Description
[0025] A presente divulgação refere-se a uma ferramenta de furar por atrito multi- operações que permite efetuar, numa mesma furação, três operações finais diferentes: furar, calibrar e roscar. 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.
[0026] A ferramenta de furar por atrito da presente divulgação tem um segmento de furação, um segmento de calibração, um segmento para abrir rosca e um segmento de batente. O segmento de calibração permite obter furos calibrados caso seja esse o objetivo final ou preparar o furo para uma operação de abertura de rosca no material escoado nas paredes do furo já calibrado. [0027] Numa realização, a Figura 1 ilustra a representação esquemática da ferramenta de furação por atrito multi-operações constituída por um corpo ou segmento de suporte 1 de forma cilíndrica, por um segmento de furação 5 de forma pontiaguda com a ponta duplamente cónica endurecida que quando pressionada em rotação contra o material em questão cria atrito suficiente para efetuar a furação, um segmento de calibração 4 com a forma cilíndrica que contém um diâmetro específico para assegurar a calibração do furo, um segmento para abrir rosca 3 com a forma especifica para abertura de rosca no material previamente furado e calibrado e um segmento com batente ou espaçador 2 de forma cilíndrica que tem um diâmetro maior em relação aos restantes segmentos. 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. In one embodiment, 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.
[0028] Numa realização, a Figura 2 ilustra a representação sequencial de uma possível aplicação de uma ferramenta de furar por atrito multi-operações, onde se verifica o inicio da furação por atrito por parte do segmento de furação (A), (B) e (C). Posteriormente e devido à existência do segmento de calibração, dá-se a calibração do furo (D). Caso seja pretendido nesta fase, podemos retirar a ferramenta para ficar com um furo calibrado sem rosca como o apresentado (E). Caso seja pretendido um furo calibrado e roscado (G), continua-se com a ferramenta até atingir o segmento de abertura de rosca (F). O segmento de batente ou espaçador limita o curso da ferramenta (F). In one embodiment, 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).
[0029] A zona de calibração permite obter furos calibrados, caso seja esse o objetivo final, ou preparar o furo para uma operação de roscagem final. 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.
[0030] Numa realização, a ferramenta de furar por atrito multi-operações começa a executar o furo com recurso à ponta especial duplamente cónica. O atrito gerado entre a peça e a ferramenta permite gerar o calor necessário para reduzir a resistência mecânica do material, permitindo a conformação por escoamento do furo. De seguida opera o segmento de calibração que permite obter furos calibrados, caso seja esse o objetivo final, ou preparar o furo para uma operação 4, e posteriormente, se assim se pretender, opera o segmento de roscagem 3 final no material escoado nas paredes do furo já calibrado. Opcionalmente, a operação pode continuar até se atingir o segmento batente-espaçador 2. [0031] A ferramenta para furar descrita na presente divulgação pode servir para em furação/calibração/roscagem de chapas finas, tubos, peças de reduzida espessura de materiais metálicos (alumínios, aços, etc), em particular, em operações de furação/calibração/roscagem de chapas finas de alumínio. In one embodiment, 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. Optionally, 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.
[0032] Numa realização, a ferramenta para furar descrita na presente divulgação apresenta vantagens tanto a nível tempo de fabrico como a nível ecológico, pois não produz aparas ou rebarba exterior, permitindo uma execução do furo calibrado ou roscado, mais eficiente. In one embodiment, 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.
[0033] Uma realização da ferramenta multi-operação de furação por atrito compreende sequencialmente uma pluralidade de segmentos axiais distintos: um segmento de suporte 1, um segmento de abertura de rosca 3, um segmento de calibração 4 de diâmetro predeterminado e um segmento auto-perfurante por atrito 5. 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.
[0034] Uma realização compreende um segmento batente-espaçador 2 de forma cilíndrica que tem um diâmetro maior do que os restantes segmentos 3, 4, 5 da ferramenta. One embodiment comprises a cylindrical stop-gap segment 2 having a larger diameter than the remaining tool segments 3, 4, 5.
[0035] Numa realização, o segmento auto-perfurante por atrito 5 tem uma ponta cónica ou uma ponta em forma de coroa arredondada. In one embodiment, the friction self-drilling segment 5 has a conical tip or a rounded crown-shaped tip.
[0036] Numa realização, o segmento auto-perfurante por atrito 5 tem uma ponta e, adjacente à referida ponta, um subsegmento de forma substancialmente frusto- cónica, de forma substancialmente hiperboloide ou substancialmente de forma de uma trompeta. In one embodiment, 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.
[0037] Numa realização, o referido subsegmento tem forma substancialmente hiperboloide. In one embodiment, said subsegment is substantially hyperboloid in shape.
[0038] Numa realização, o segmento de calibração 4 tem um comprimento de pelo menos de duas vezes o diâmetro do segmento de calibração. In one embodiment, the calibration segment 4 has a length of at least two times the diameter of the calibration segment.
[0039] Numa realização, o comprimento do segmento auto-perfurante por atrito 5 é idêntico ao comprimento do segmento de calibração 4. [0040] Numa realização, o comprimento do segmento de abertura de rosca 3 é idêntico ao comprimento do segmento de calibração 4. In one embodiment, 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.
[0041] Uma realização compreende, adjacentes e sequencialmente: o segmento de abertura de rosca 3, o segmento de calibração 4 e o segmento auto-perfurante por atrito 5. One embodiment comprises, sequentially adjacent: the thread aperture segment 3, the calibration segment 4 and the friction self-drilling segment 5.
[0042] Uma realização compreende, adjacentes e sequencialmente: o segmento batente-espaçador 2, o segmento de abertura de rosca 3, o segmento de calibração 4 e o segmento auto-perfurante por atrito 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.
[0043] A presente divulgação não é, naturalmente, de modo algum restrita às realizações descritas neste documento e uma pessoa com conhecimentos médios da área poderá prever muitas possibilidades de modificação da mesma e de substituições de características técnicas por outros equivalentes. As seguintes reivindicações definem realizações adicionais da presente descrição. The present disclosure is of course not in any way restricted to the embodiments described herein and a person having ordinary skill in the art may foresee many possibilities of modifying it and replacing technical features with other equivalent ones. The following claims define additional embodiments of the present disclosure.

Claims

R E I V I N D I C A Ç Õ E S
1. Ferramenta multi-operação de furação por atrito que compreende sequencialmente uma pluralidade de segmentos axiais distintos: um segmento de suporte, um segmento de abertura de rosca, um segmento de calibração de diâmetro predeterminado e um segmento auto-perfurante por atrito. A multi-operating friction drilling tool which sequentially comprises a plurality of distinct axial segments: a support segment, a thread aperture segment, a predetermined diameter calibration segment and a friction self-drilling segment.
2. Ferramenta multi-operação de furação por atrito de acordo com a reivindicação anterior que compreende um segmento batente-espaçador de forma cilíndrica que tem um diâmetro maior do que os restantes segmentos da ferramenta. A friction drilling multi-operation tool according to the preceding claim comprising a cylindrically shaped stop-spacer segment having a larger diameter than the remaining tool segments.
3. Ferramenta multi-operação de furação por atrito de acordo com qualquer uma das reivindicações anteriores em que o segmento auto-perfurante por atrito tem uma ponta cónica. A multi-operation friction drilling tool according to any one of the preceding claims wherein the friction self-drilling segment has a conical tip.
4. Ferramenta multi-operação de furação por atrito de acordo com qualquer uma das reivindicações anteriores em que o segmento auto-perfurante por atrito tem uma ponta e, adjacente à referida ponta, um subsegmento de forma substancialmente frusto-cónica, de forma substancialmente hiperboloide ou de forma substancialmente de trompeta. A friction drilling multi-operation tool according to any one of the preceding claims wherein the friction self-drilling segment has a tip and, adjacent said tip, a substantially frusto-conical, substantially hyperboloid subsegment or substantially trumpet shape.
5. Ferramenta multi-operação de furação por atrito de acordo com a reivindicação anterior em que o referido subsegmento tem forma substancialmente hiperboloide. A friction drilling multi-operation tool according to the preceding claim wherein said subsegment is substantially hyperboloid shaped.
6. Ferramenta multi-operação de furação por atrito de acordo com qualquer uma das reivindicações anteriores, em que o segmento de calibração tem um comprimento de pelo menos duas vezes o diâmetro do segmento de calibração. A multi-operating friction drilling tool according to any one of the preceding claims, wherein the calibration segment has a length of at least two times the diameter of the calibration segment.
7. Ferramenta multi-operação de furação por atrito de acordo com qualquer uma das reivindicações anteriores, em que o comprimento do segmento auto- perfurante por atrito é idêntico ao comprimento do segmento de calibração. A friction drilling multi-operation tool according to any one of the preceding claims, wherein the length of the friction self-drilling segment is identical to the length of the calibration segment.
8. Ferramenta multi-operação de furação por atrito de acordo com qualquer uma das reivindicações anteriores, em que o comprimento do segmento de abertura de rosca é idêntico ao comprimento do segmento de calibração. A multi-operating friction drilling tool according to any one of the preceding claims, wherein the length of the thread aperture segment is identical to the length of the calibration segment.
9. Ferramenta multi-operação de furação por atrito de acordo com qualquer uma das reivindicações anteriores, que compreende, adjacentes e sequencialmente: o segmento de abertura de rosca, o segmento de calibração e o segmento auto- perfurante por atrito. A friction drilling multi-operation tool according to any one of the preceding claims, comprising, sequentially adjacent: the thread-opening segment, the calibration segment and the friction self-drilling segment.
10. Ferramenta multi-operação de furação por atrito de acordo com a reivindicação anterior, que compreende, adjacentes e sequencialmente: o segmento batente- espaçador, o segmento de abertura de rosca, o segmento de calibração e o segmento auto-perfurante por atrito. A friction drilling multi-operation tool according to the preceding claim, comprising adjacent and sequentially: the stop-gap segment, the thread-opening segment, the calibration segment and the friction self-drilling segment.
PCT/IB2018/056842 2017-09-07 2018-09-07 Multi-operation friction drilling tool WO2019049078A1 (en)

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