EP3752745A1 - Vis autotaraudeuse et sa fabrication - Google Patents

Vis autotaraudeuse et sa fabrication

Info

Publication number
EP3752745A1
EP3752745A1 EP19708948.5A EP19708948A EP3752745A1 EP 3752745 A1 EP3752745 A1 EP 3752745A1 EP 19708948 A EP19708948 A EP 19708948A EP 3752745 A1 EP3752745 A1 EP 3752745A1
Authority
EP
European Patent Office
Prior art keywords
thread
screw
application material
application
forming screw
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.)
Withdrawn
Application number
EP19708948.5A
Other languages
German (de)
English (en)
Inventor
Michael Achenbach
Eberhard Christ
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.)
Ejot GmbH and Co KG
Original Assignee
Ejot GmbH and Co KG
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 Ejot GmbH and Co KG filed Critical Ejot GmbH and Co KG
Publication of EP3752745A1 publication Critical patent/EP3752745A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B25/00—Screws that cut thread in the body into which they are screwed, e.g. wood screws
    • F16B25/0036—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw
    • F16B25/0094—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw the screw being assembled or manufactured from several components, e.g. a tip out of a first material welded to shaft of a second material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H3/00—Making helical bodies or bodies having parts of helical shape
    • B21H3/02—Making helical bodies or bodies having parts of helical shape external screw-threads ; Making dies for thread rolling
    • B21H3/04—Making by means of profiled-rolls or die rolls
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B25/00—Screws that cut thread in the body into which they are screwed, e.g. wood screws
    • F16B25/001—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by the material of the body into which the screw is screwed
    • F16B25/0021—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by the material of the body into which the screw is screwed the material being metal, e.g. sheet-metal or aluminium
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B25/00—Screws that cut thread in the body into which they are screwed, e.g. wood screws
    • F16B25/001—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by the material of the body into which the screw is screwed
    • F16B25/0026—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by the material of the body into which the screw is screwed the material being a hard non-organic material, e.g. stone, concrete or drywall
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B25/00—Screws that cut thread in the body into which they are screwed, e.g. wood screws
    • F16B25/0036—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw
    • F16B25/0042—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw characterised by the geometry of the thread, the thread being a ridge wrapped around the shaft of the screw
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B25/00—Screws that cut thread in the body into which they are screwed, e.g. wood screws
    • F16B25/0036—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw
    • F16B25/0042—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw characterised by the geometry of the thread, the thread being a ridge wrapped around the shaft of the screw
    • F16B25/0047—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw characterised by the geometry of the thread, the thread being a ridge wrapped around the shaft of the screw the ridge being characterised by its cross-section in the plane of the shaft axis

Definitions

  • the invention relates to a thread-forming screw according to the preamble of claim 1 and to a method for the production thereof according to claim 13.
  • Such a screw is known for example from DE 20 2006 000 606 U1
  • a thread-forming screw comprises a base body comprising a drive and a screw shaft, wherein the screw shaft carries a thread.
  • the thread has a furrow region and a bearing region, wherein the furrow region serves to furrow a thread in the material of the component, in which then engages in the course of the thread of the bearing portion.
  • the main body which comprises the screw shank, is formed from a base material which preferably has non-corrosive properties, that is to say in particular a rust- and acid-resistant steel, referred to below as stainless steel.
  • a base material which preferably has non-corrosive properties, that is to say in particular a rust- and acid-resistant steel, referred to below as stainless steel.
  • material and material are used synonymously.
  • the thread in the furrow region is formed by a different material to the base material application material, wherein the application material is harder than the base material in particular.
  • the application material may also be a hardenable material which is subjected to a flanging process during build-up welding or subsequently for build-up welding.
  • This design has the advantage that by applying the thread in the furrow area, no recesses must be introduced into the prefabricated threads when the thread is formed in the furrow region of application material.
  • a screw can be provided whose thread in the furrow region has a greater hardness than the base material.
  • the application material is in particular in the screw according to the invention
  • Cladding or thermal spraying applied to the basic body formed from base material Cladding or thermal spraying applied to the basic body formed from base material.
  • volume is built up by introducing only filler metal into the welded joint, which then constitutes the application material.
  • the furrow region ends, starting from the screw tip, where the female thread is completely made.
  • the length of the furrow is at least half a turn.
  • the base body can also consist of a light metal alloy, for example aluminum alloy, and the coating material can be a different metal alloy or an alloy mixture.
  • the base material may preferably be an austenitic stainless steel, for example 1 .4301 or 1 .4401.
  • the application material is preferably formed as a martensitic hardenable steel.
  • the application material can also be a material mixture, for example comprising stainless steel,
  • Hard materials such as carbides or ceramics and other components with specific properties.
  • the application materials can preferably be mixed during the welding process.
  • different compositions of the order material may be present.
  • a bearing portion of the thread can be produced by build-up welding, wherein the bearing portion has a different composition than the groove portion.
  • the furrow area may be made of a non-corrosion resistant
  • carbon-rich and hardenable steel in particular with a carbon content of more than 0.4%, wherein the supporting region is at least partially formed by a corrosion-resistant material, in order to prevent corrosion in case either moisture penetrates or condenses.
  • the proportion of hard material in the furrow region can be greater than in the load-bearing region of the thread.
  • a material with a high proportion of hard material naturally has a low toughness but a high degree of toughness
  • the layer thickness namely the build-up thickness of the application material is preferably at least 5% of the shaft diameter.
  • the layer thickness is produced with a coating layer.
  • the invention relates to a method for producing a screw as described above, which has a drive and a screw shank with a thread.
  • the thread has a load-bearing area and a ridge area.
  • the screw shaft consists of a base material.
  • the main body is first pressed from the base material, which is coated in the region of the furrow portion of the thread with a coating material by application welded to the base material.
  • the thread in the furrow area is at least at the edge by the
  • the shape of the base body may be cylindrical or non-circular, in particular equal-thick, elliptical or profiled.
  • the thread can be applied directly to the base material. This is done, in particular, by welding a bead around the shank in a helix shape that is customary for screws.
  • a self-tapping thread can be produced directly by welding the thread. This allows threads in particular with a blunt flank angle or rounded
  • Thread flanks are generated.
  • the thread applied solely by build-up welding on the screw shaft has a rough structure on its surface, so that the thread flank has abrasive properties for generating the counter-thread.
  • the thread can preferably be produced by pressing the screw blank so that it has a smaller radial extent in the area to be coated than in the area not to be coated.
  • the application material is welded onto the base material, whereby the base body made of base material is coated with application-welded application material.
  • the coating takes place in such a way that the screw shank has the same outer diameter throughout.
  • the coated with the application material screw blank is then rolled so that it receives its self-tapping thread.
  • a thread-forming screw which has a high toughness in the region of the thread, besides good corrosion properties in the bearing portion of the thread and the head has and yet hard thread flanks to be able to be self-tapping screwed into components of great hardness.
  • the application material in points, beads or surface, in particular full-surface, enveloping applied to the base body formed from the base material.
  • the caterpillars can be helical, annular or linear, in particular parallel to the screw axis, applied.
  • a twisting of the screw shank, in particular of the furrow region can preferably take place in order to produce a thread structure.
  • the order of the order material can be made such that only in Furch Scheme the application material is welded. This results in a two-bolt, the Furch Handbook a Furchgewinde made of tempered steel and in the bearing area has a thread made of stainless steel.
  • a screw can be provided, the thread of which is rolled both in the job-welded Furch Scheme, as well as in the holding area.
  • a screw may also be produced whose thread is rolled in the holding region and is formed in the region of the ridge only by the mechanically untreated, application-welded application material.
  • the order material may be in the form of wire, powder or as a molded part.
  • the application material can also be applied in such a way that the thread in the furrow region is formed from a first application material and the thread in the bearing region is at least partially formed from a second application material.
  • the first application material has a greater hardness than the second application material.
  • Fig. 1a is a side view of a screw blank
  • Figure 1 b is a sectional view of a screw blank with application material in the furrow region.
  • Fig. 1 c is a sectional view of a thread-forming screw according to the invention.
  • Fig. 2a is a partial side view of an inventive coated screw blank
  • FIG. 2b shows a cross section of a screw blank coated according to the invention
  • FIG. 3a shows a partial sectional view of a screw blank according to the invention
  • FIG. 3b shows a cross section of a coated screw blank according to FIG. 3a
  • Fig. 4 shows a schematic sectional view of a screw according to the invention
  • Fig. 5 shows a schematic sectional view of a screw according to the invention
  • Fig. 6 shows a schematic sectional view of a screw according to the invention
  • FIG. 1 a shows a base body 12 pressed from the base material stainless steel with a drive 15, in which the diameter in the ridge area 14 is smaller than in the uncoated area 16.
  • the furrow area 14 to be coated is by hardfacing a harder material than the base material or by a final heat treatment curable material applied as a coating material 18. This is done according to the invention by
  • Fig. 2a shows a detail of a side view of another embodiment with a coating variant, in softer on a, as shown in Fig. 1 a base body 20 with reduced diameter in the furrow 16, parallel to the screw axis running, beads 26 are welded from application material.
  • FIG. 2b shows the cross section through the furrow region of the main body 20.
  • Fig. 3a shows a detail of a side view of another embodiment with a base body 20.
  • the main body 20 has in the ridge portion 22 axial grooves 24. In the grooves, the application material 26 is welded.
  • FIG. 3b shows a sectional view of a base body 20 coated with a coating material 26 according to FIG. 3a.
  • Fig. 4 shows a thread-forming screw 30 according to the invention, in which a threaded bead 34 is welded in helical form on a shaft 32, which consists of a stainless and acid-resistant steel.
  • the screw 30 is designed as a concrete screw.
  • Fig. 5 shows a schematic sectional view of a cap 50 according to the invention with a
  • Threaded bead 34 in which the thread in the furrow 36 by an order-welded
  • Threaded bead is formed from a coating material, wherein the supporting portion is at least partially formed from a rolled thread 38.
  • FIG. 6 shows a schematic sectional view of a further embodiment of a screw 60 according to the invention with the thread bead 34, formed in the ridge area 36 by a first application material, and in the supporting area at least partially by a second application material 40, which is different from the first application material.
  • the furrow region of the thread has a greater hardness than the bearing region.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Connection Of Plates (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)
  • Transmission Devices (AREA)

Abstract

L'invention concerne une vis autotaraudeuse (10) comprenant un corps de base (12, 20) qui présente un entraînement et une tige de vis, ladite tige de vis portant un filet (13) qui présente une zone sillon (14) et une zone porteuse, le corps de base (12, 20) étant composé d'un matériau de base. L'invention se caractérise en ce que le filet (13) se compose, au moins dans la zone sillon, d'un matériau appliqué qui est différent du matériau de base et est appliqué par soudage par apport de matière.
EP19708948.5A 2018-02-14 2019-02-14 Vis autotaraudeuse et sa fabrication Withdrawn EP3752745A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018103325.7A DE102018103325A1 (de) 2018-02-14 2018-02-14 Gewindefurchende Schraube und Herstellung derselben
PCT/EP2019/053730 WO2019158659A1 (fr) 2018-02-14 2019-02-14 Vis autotaraudeuse et sa fabrication

Publications (1)

Publication Number Publication Date
EP3752745A1 true EP3752745A1 (fr) 2020-12-23

Family

ID=65685289

Family Applications (2)

Application Number Title Priority Date Filing Date
EP19708948.5A Withdrawn EP3752745A1 (fr) 2018-02-14 2019-02-14 Vis autotaraudeuse et sa fabrication
EP19708949.3A Withdrawn EP3752746A1 (fr) 2018-02-14 2019-02-14 Vis autotaraudeuse et sa fabrication

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP19708949.3A Withdrawn EP3752746A1 (fr) 2018-02-14 2019-02-14 Vis autotaraudeuse et sa fabrication

Country Status (4)

Country Link
US (2) US20210033135A1 (fr)
EP (2) EP3752745A1 (fr)
DE (1) DE102018103325A1 (fr)
WO (2) WO2019158660A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3910126A1 (fr) * 2020-05-12 2021-11-17 Brinkhus Kunststoffverarbeitung GmbH Espaceur destiné au montage de panneaux profilés en plastique à surface de frottement

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2263527A (en) * 1940-02-09 1941-11-18 Reed & Prince Mfg Company Fastening device and process
US3769103A (en) * 1971-03-25 1973-10-30 Res Eng & Mfg Method of heat treating articles
US4350464A (en) * 1980-09-15 1982-09-21 Brothers Richard L Anchor bolt for concrete
US5193958A (en) * 1989-08-08 1993-03-16 Itw Ltd. Coating of screws
US5419948A (en) * 1990-02-12 1995-05-30 Daidousanso Co., Ltd. Hard austenitic stainless steel screw and a method for manufacturing the same
US5460875A (en) * 1990-10-04 1995-10-24 Daidousanso Co., Ltd. Hard austenitic stainless steel screw and a method for manufacturing the same
JP2004036733A (ja) * 2002-07-02 2004-02-05 Nitto Seiko Co Ltd 雌ねじ成形屑吸着ねじ
AU2003239788A1 (en) * 2003-02-18 2004-09-09 Toge-Dubel A. Gerhard Kg Thread-cutting screw
EP1455101A1 (fr) * 2003-03-06 2004-09-08 Siemens Aktiengesellschaft Vis avec un revetement de protection et son procède de fabrication
DE102004053803B4 (de) 2004-11-08 2006-10-26 Hilti Ag Gewindefurchende Schraube
DE202006000606U1 (de) 2006-01-12 2006-03-16 Textron Verbindungstechnik Gmbh & Co. Ohg Schrauben oder Bolzen
DE102007010221A1 (de) * 2007-02-28 2008-09-04 Baier & Michels Gmbh & Co. Kg Schraube mit einem gewindeformenden Gewinde, Rohling zur Herstellung der Schraube und Schraubverbindung
DE102007000154B4 (de) * 2007-03-15 2023-12-07 Hilti Aktiengesellschaft Spanlos gewindeformende Schraube
JP2009121616A (ja) * 2007-11-15 2009-06-04 Toshiba Corp ボルトおよびボルトの製造方法、原子炉炉内構造物
JP4787295B2 (ja) * 2008-07-14 2011-10-05 株式会社トープラ 高強度セルフフォーミングねじによるねじ締結構造体
US8430619B2 (en) * 2010-01-19 2013-04-30 Black & Decker Inc. Concrete and masonry screw anchor
DE102011078686A1 (de) * 2011-07-05 2012-04-05 Baier & Michels Gmbh & Co. Kg Gewindeformende Schraube und Schraubverbindung sowie Rohling zur Herstellung der Schraube
DE102012009400B4 (de) * 2012-05-10 2014-02-13 Sfs Intec Holding Ag Bohrschraube und deren verwendung
US10561456B2 (en) * 2014-07-24 2020-02-18 KYOCERA Medical Technologies, Inc. Bone screw incorporating a porous surface formed by an additive manufacturing process
DE102016114180A1 (de) * 2016-05-12 2017-11-16 Fischerwerke Gmbh & Co. Kg Selbstschneidende Betonschraube

Also Published As

Publication number Publication date
DE102018103325A1 (de) 2019-08-14
WO2019158660A1 (fr) 2019-08-22
WO2019158659A1 (fr) 2019-08-22
US20210003162A1 (en) 2021-01-07
EP3752746A1 (fr) 2020-12-23
US20210033135A1 (en) 2021-02-04

Similar Documents

Publication Publication Date Title
EP2257714B1 (fr) Vis taraudeuse
EP1109637A1 (fr) Vis autotaraudeuse en alliage leger et son procede de production
DE4310938A1 (de) Herstellung einer selbstschneidenden und gegebenenfalls selbstbohrenden Schraube mit austenitischem rostfreiem Stahl
EP2847473B1 (fr) Vis auto-taraudeuse et son utilisation
DE2549147A1 (de) Schraube
EP2857699B1 (fr) Douille taraudée à visser
EP0861379B1 (fr) Vis et son procede de production
DE10014078A1 (de) Verfahren zur Herstellung eines Schweißbolzens
DE102004053803A1 (de) Gewindefurchende Schraube
DE3050448A1 (en) Method of obtaining on a workpiece a resilient screw thread with closed helical cavity inside its profile and thread-forming tool therefor
EP3752745A1 (fr) Vis autotaraudeuse et sa fabrication
WO2020239164A1 (fr) Écrou profilé d'un mécanisme de vis-écrou, en particulier vis-écrou à billes d'un mécanisme de vis-écrou à billes et procédé pour la fabrication de celui-ci
DE3050319C2 (fr)
EP3620673A1 (fr) Vis à béton
EP3620672A1 (fr) Vis à béton
WO2019158661A1 (fr) Élément de liaison
DE102012102019B3 (de) Bolzenartiges Befestigungselement, insbesondere Bohrschraube, und damit hergestellte Verbindung
DE102019120812A1 (de) Verfahren zum Herstellen einer Gewindemutter eines Gewindetriebes, insbesondere Kugelgewindemutter eines Kugelgewindetriebes
EP2168697A1 (fr) Procédé de fabrication de vis de forage
DE102014216790A1 (de) Verfahren zur Herstellung eines Verbindungselements sowie Verbindungselement und CFK-Bauteil mit einem derartigen Verbindungselement
DE2307271A1 (de) Schraubenbolzen und verfahren zu dessen herstellung
DE102016105622B4 (de) Verfahren zur Herstellung eines Schraubankers mit einem metrischen Anschlussgewinde
EP4336057A1 (fr) Procédé de fabrication d'une vis bimétallique, corps de base d'une vis bimétallique et vis bimétallique
EP3438475A1 (fr) Vis à béton
EP3428307A1 (fr) Vis

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: UNKNOWN

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20200904

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20220901