WO2017187329A1 - Outil combiné de forage et de taraudage sans enlèvement de copeaux - Google Patents

Outil combiné de forage et de taraudage sans enlèvement de copeaux Download PDF

Info

Publication number
WO2017187329A1
WO2017187329A1 PCT/IB2017/052357 IB2017052357W WO2017187329A1 WO 2017187329 A1 WO2017187329 A1 WO 2017187329A1 IB 2017052357 W IB2017052357 W IB 2017052357W WO 2017187329 A1 WO2017187329 A1 WO 2017187329A1
Authority
WO
WIPO (PCT)
Prior art keywords
tool
tapping
hole
forming
thread
Prior art date
Application number
PCT/IB2017/052357
Other languages
English (en)
Inventor
Povilas KRASAUSKAS
Sigitas KILIKEVICIUS
Ramunas CESNAVICIUS
Original Assignee
Kauno technologijos universitetas
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 Kauno technologijos universitetas filed Critical Kauno technologijos universitetas
Publication of WO2017187329A1 publication Critical patent/WO2017187329A1/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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23G—THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
    • B23G7/00—Forming thread by means of tools similar both in form and in manner of use to thread-cutting tools, but without removing any material
    • B23G7/02—Tools for this purpose

Definitions

  • This invention is attributed to manufacturing engineering and may be used in the metalworking, furniture, automotive, construction and consumer goods industries for hole forming and tapping in thin metal sheets, hollow pipes of various cross-sections and other thin walled parts.
  • a method and a tool are known for hole forming an tapping in a thin walled part using a special tool and device.
  • the device is placed at a predetermined position by a robot, thread portion processing position is formed with a weld overlay by generating an arc by the filler and melting the filler, and then a threaded hole is formed by the special tool.
  • the tool is comprised of a pilot hole forming portion having a tapered shape, the pilot hole forming portion having a first spiral groove, and a thread forming portion having a second spiral groove.
  • the main disadvantages of the method and the tool limited usability, the complex and expensive design of the device, separate drives for rotating and transition the tool, a mechanism for feeding the filler as well as a device for arc generation are needed.
  • the proposed tool is not versatile, it is intended to use only with the proposed device, besides it does not compress the sharp-edged collar, therefore an additional machining operation is required to remove the metal excess from the upper surface of the hole.
  • the main disadvantages of the method and the tool limited usability, the complex and expensive design of the device, devices for heating the workpiece and cooling the tool are needed.
  • the proposed tool is not versatile, it is intended to use only with the proposed device, besides it does not compress the sharp-edged collar, therefore an additional machining operation is required to remove the metal excess from the upper surface of the hole.
  • the tool comprises of three phases.
  • the first phase comprises of a conical shaping tip, with a polygonal shaped cross- section.
  • the second phase comprises of a following cylindrical transition piece with a polygonal shaped cross-section and a groove at the rise of the thread being cut.
  • the third phase comprises of a thread a non-cylindrical polygonal shaped cross- section.
  • the main disadvantages of the tool is that it does not contain a part for hole calibration which is required to form a neck for threading completely at the bottom surface of the hole, besides, a sharp-edged collar is formed after the operation of hole forming and tapping, therefore an additional machining operation is required to remove the sharp-edged collar.
  • the aim of the invention is to form a hole with a neck, calibrate and the hole and neck, tap a thread and achieve an economic effect due to an increase in the efficiency of manufacturing, as an additional machining operation is not required to remove the metal excess from the upper surface of the hole.
  • the aim of the invention is achieved by using the proposed combined tool comprising of 7 parts, which gradually transit from one to another.
  • the tool forms and calibrates a hole with a neck, taps and calibrates a thread, furthermore, at the end of the operation, compresses the sharp-edged collar, which occurs on the top of the hole.
  • Fig. 1 shows the design of the combined drilling-taping tool comprising of seven parts.
  • Fig. 2 shows the cross-section shapes of the first, the second and the third part of the tool.
  • Fig. 3 shows the cross-section shapes of the fourth and the fifth part of the tool.
  • the essence of the invention consists of the created combined drilling-taping tool for chipless thermoplastic forming, calibration and tapping of a hole with a neck in thin metal sheets, hollow pipes of various cross-sections and other thin walled parts and compression of the sharp-edged collar, which forms on the top of the workpiece after the drilling due to the excess of the metal.
  • the tool (Fig. 1) comprises of 7 parts, which gradually transit from one to another: the first part is a cone 1 of a rounded polygonal cross-section for forming a centring hole in the workpiece; the second part is a conical frustum 2 of a rounded polygonal cross-section for hole forming by gradually penetrating the metal and pushing the excess of the metal downwards and, in this manner, forming an additional molten flange (a neck) on the underneath side of the workpiece; the third part is a cylinder 3 of a rounded polygonal cross-section for hole and neck calibration until the required diameter for tapping is achieved; the fourth part is a conical tap 4 of a rounded polygonal cross-section and having not less than 2-3 turns for gradual pilot tapping until the nominal thread diameter is achieved; the fifth part is a cylindrical thread 5 of a polygonal cross-section for finishing the thread; the sixth part is a cylindrical shoulder 6 of a circular cross-section with a diameter not less than the compressed sharp-edged collar for compress
  • the combined drilling-taping tool operates as follows: due to the friction between the tool and the workpiece, the temperature in the contact zone rises over 600 °C, the first part of the tool 1 forms a centring hole in the workpiece, the second part 2 penetrates the metal and pushes the metal excess downwards and, in this manner, a neck is formed on the underneath side of the workpiece.
  • the third part forms and calibrates the hole with the neck until the required diameter for tapping is achieved.
  • the thickness of the workpiece at the hole zone is increased about 3-4 times compared to the initial thickness, however, during the tool plunging into the workpiece, some portion of the metal is pushed upwards, thus on the top of the workpiece a sharp- edged collar is formed.
  • the fourth part 4 gradually performs pilot tapping until the nominal thread diameter is achieved and, after that, the fifth part 5 completely forms the thread of the required shape and dimensions.
  • the shoulder 6 compresses the sharp-edged collar and the tapping feed is turned off. After that, the spindle speed is reversed and the tool is withdrawn from the hole.
  • the third part of the tool enables to form the size and shape of the neck as well as the hole dimension more precisely for the tapping operation and, at the end of the tapping, the shoulder compresses the sharp-edged collar formed around the hole on the top of the workpiece, therefore, an additional mechanical operation for its removal is not required.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

Abstract

La présente invention porte sur un outil combiné de forage-taraudage pour formation par extrusion thermoplastique, étalonnage et taraudage sans enlèvement de copeaux d'un trou ayant un col dans des feuilles métalliques minces. Un effet économique est obtenu par formation et taraudage de trous à l'aide de l'outil combiné proposé, du fait que le temps inter-opérationnel relié à l'outil changeant et définissant de nouveaux régimes de formation, en outre, après le taraudage, le collier à arêtes vives, qui se produit sur le sommet de la pièce après le forage, est comprimé, ce qui permet d'éviter une opération mécanique supplémentaire permettant son retrait. L'outil combiné de forage et de taraudage comprend sept parties dont les cinq ont une section transversale polygonale arrondie, qui passe progressivement de l'une à l'autre : le cône (1) pour former un trou de centrage dans la pièce; le cône (2) pour former un trou en pénétrant progressivement dans le métal; le cylindre (3) pour l'étalonnage du trou et du cou jusqu'à ce que le diamètre requis pour le taraudage soit obtenu; le filetage conique (4) ayant au moins 2-3 spires pour un taraudage pilote progressif graduel jusqu'à ce que le diamètre nominal de filetage soit obtenu; le filetage cylindrique (5) pour finir le taraudage sans enlèvement de copeaux du filetage; l'épaulement cylindrique (6) d'une section transversale circulaire ayant un diamètre non inférieur au collier à bord tranchant comprimé pour comprimer le collier à arêtes vives, la tige (7) pour monter l'outil dans un collet.
PCT/IB2017/052357 2016-04-29 2017-04-25 Outil combiné de forage et de taraudage sans enlèvement de copeaux WO2017187329A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
LT2016-058 2016-04-29
LT2016058A LT6488B (lt) 2016-04-29 2016-04-29 Kombinuotas įrankis skylėms su sriegiu plonasienėse detalėse formuoti

Publications (1)

Publication Number Publication Date
WO2017187329A1 true WO2017187329A1 (fr) 2017-11-02

Family

ID=59067707

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2017/052357 WO2017187329A1 (fr) 2016-04-29 2017-04-25 Outil combiné de forage et de taraudage sans enlèvement de copeaux

Country Status (2)

Country Link
LT (1) LT6488B (fr)
WO (1) WO2017187329A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108188507A (zh) * 2018-03-09 2018-06-22 陕西理工大学 一种快速进给滚珠丝杠副的螺母加工刀具及成形方法
EP3628831A1 (fr) * 2018-09-25 2020-04-01 Federal-Mogul Valvetrain GmbH Poussoir à coupelle à blocage de rotation et son procédé de fabrication

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19653394A1 (de) 1996-12-20 1998-06-25 Franz Prof Dr Ing Tikal Werkzeug zum spanlosen Erzeugen eines Durchzuges mit Innengewinde in einem Arbeitsgang
JP4572157B2 (ja) 2005-11-01 2010-10-27 本田技研工業株式会社 ねじ成形方法及びねじ成形装置
US8419556B2 (en) 2008-08-27 2013-04-16 Honda Motor Co., Ltd. Nut, female thread machining device and female thread machining method

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108188507A (zh) * 2018-03-09 2018-06-22 陕西理工大学 一种快速进给滚珠丝杠副的螺母加工刀具及成形方法
EP3628831A1 (fr) * 2018-09-25 2020-04-01 Federal-Mogul Valvetrain GmbH Poussoir à coupelle à blocage de rotation et son procédé de fabrication

Also Published As

Publication number Publication date
LT2016058A (lt) 2017-11-10
LT6488B (lt) 2018-01-25

Similar Documents

Publication Publication Date Title
US2927332A (en) Method of making a setscrew
JP2020097056A (ja) リベッティング方法
US7354350B2 (en) Tools and methods for finishing a previously created thread without cutting
WO2017187329A1 (fr) Outil combiné de forage et de taraudage sans enlèvement de copeaux
US10330231B2 (en) Arrangement for producing a pipe connection and holding element for such an arrangement
KR102155519B1 (ko) 시트 금속 블랭크 및 이에 의해 제조되는 워크피스를 형성하기 위한 장치, 설비 및 방법
CN108374824B (zh) 材料的盲流螺旋结合
CN103909386B (zh) 一种钛合金油管接头的加工方法
JP6013656B1 (ja) ねじの加工方法
US20100008737A1 (en) Tool for and method of forming at tapped hole in a single pass
US20160354834A1 (en) Thread rolling tool
CN103600135A (zh) 一种双头螺纹的加工方法
CN205032617U (zh) 四角法兰定向翻铆螺母的冷镦装置
EP0858373A1 (fr) Appareil et procede permettant de forger un pignon presque a la cote desiree
CN206104924U (zh) 一种具有多个支撑部位的外涨芯轴
JP2008296349A (ja) ねじの加工方法
JP6467184B2 (ja) ねじの製造方法およびねじ
CN205008812U (zh) 一种超大螺距的内螺纹加工工具
CN109648022B (zh) 一种无缝无毛刺挤压丝锥及其制作的内螺纹
CN107225363A (zh) 一种膨胀套生产工艺
CN107803628B (zh) 一种发泡器发泡盖的加工工艺
MX2022003087A (es) Metodo y herramienta para creacion de una rosca de paso.
KR20190072841A (ko) 냉간단조 공법을 이용한 인서트 스크류 제조방법
US20140353292A1 (en) Systems and methods for spot welding using electrode tips
JP5987856B2 (ja) 溶接装置及び溶接方法

Legal Events

Date Code Title Description
NENP Non-entry into the national phase

Ref country code: DE

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 17730567

Country of ref document: EP

Kind code of ref document: A1

122 Ep: pct application non-entry in european phase

Ref document number: 17730567

Country of ref document: EP

Kind code of ref document: A1