EP3752744A1 - Élément de liaison - Google Patents

Élément de liaison

Info

Publication number
EP3752744A1
EP3752744A1 EP19708784.4A EP19708784A EP3752744A1 EP 3752744 A1 EP3752744 A1 EP 3752744A1 EP 19708784 A EP19708784 A EP 19708784A EP 3752744 A1 EP3752744 A1 EP 3752744A1
Authority
EP
European Patent Office
Prior art keywords
connecting element
thread
tip
shaft
base material
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Withdrawn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
EP19708784.4A
Other languages
German (de)
English (en)
Inventor
Eberhard Christ
Michael Achenbach
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 EP3752744A1 publication Critical patent/EP3752744A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • B21H3/027—Rolling of self-tapping screws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
    • B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
    • B23K20/129—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding specially adapted for particular articles or workpieces
    • B23K20/1295—Welding studs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/04—Welding for other purposes than joining, e.g. built-up welding
    • B23K9/044—Built-up welding on three-dimensional surfaces
    • B23K9/046—Built-up welding on three-dimensional surfaces on surfaces of revolution
    • B23K9/048—Built-up welding on three-dimensional surfaces on surfaces of revolution on cylindrical surfaces
    • 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
    • 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
    • F16B25/10—Screws performing an additional function to thread-forming, e.g. drill screws or self-piercing screws
    • F16B25/103—Screws performing an additional function to thread-forming, e.g. drill screws or self-piercing screws by means of a drilling screw-point, i.e. with a cutting and material removing action
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K10/00—Welding or cutting by means of a plasma
    • B23K10/02—Plasma welding
    • B23K10/027—Welding for purposes other than joining, e.g. build-up welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/34—Laser welding for purposes other than joining
    • B23K26/342—Build-up welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/04—Welding for other purposes than joining, e.g. built-up welding
    • 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
    • F16B19/00—Bolts without screw-thread; Pins, including deformable elements; Rivets
    • F16B19/14—Bolts or the like for shooting into concrete constructions, metal walls or the like by means of detonation-operated nailing tools
    • 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
    • F16B25/10—Screws performing an additional function to thread-forming, e.g. drill screws or self-piercing screws
    • F16B25/106—Screws performing an additional function to thread-forming, e.g. drill screws or self-piercing screws by means of a self-piercing screw-point, i.e. without removing material

Definitions

  • the invention relates to a connecting element according to the preamble of claim 1 and a method for the production thereof according to claim 11.
  • Such a screw is known for example from DE 20 2006 000 606 U1.
  • a connecting element for connecting at least two superimposed components a shaft and a head provided with a drive.
  • the shaft is formed of a base material and terminates at its free end opposite the head.
  • a tip region of application material adjoins the free shaft end of base material, which was applied in particular by build-up welding.
  • the tip area is applied to the front of the shaft.
  • volume is built up by the exclusive introduction of a welding additive.
  • the application material may be a harder or a hardenable material compared to the base material. This allows penetration of components whose hardness is greater than that of the base material.
  • Advantageous properties of the base material in particular with regard to corrosion properties can be used without having to take into account the hardness requirements necessary for the retention properties.
  • the base material can be a non-rusting and acid-resistant steel or a
  • the application material is preferably formed as martensitic hardenable steel.
  • the application material can also be a material mixture.
  • a material mixture for example, consisting of stainless steel, carbide and other components with specific properties such. B. under the
  • the application material can form a tip in the tip region. This can be made in particular by rolling or pinching or other manufacturing processes.
  • the connecting element next to the tip further functional areas between the tip and the head have.
  • This may be, for example, a screw thread, which is designed in particular as Furchgewinde.
  • the furrow region of the screw thread according to the invention may also have a thread made of material which is welded onto the workpiece.
  • the connecting element may be a Reibsch spallselement.
  • the tip of the connecting element according to the invention does not necessarily have to be acute-angled. It can also be rounded or obtuse-angled.
  • this relates to a method for Fiergna a connecting element described above.
  • a shank produced from a base material in particular a bare shank, is coated with a coating material at least at its free shank end, so that a tip can be produced from the sheath material.
  • the application material is applied to the front of the shaft.
  • a tip of the connecting element can be produced there in the tip region by further processing of the application material.
  • the application material by means of build-up welding, in particular by means of
  • Laser deposition welding laser powder deposition welding, arc welding or
  • Plasma powder deposition welding or by other generative methods Plasma powder deposition welding or by other generative methods.
  • the free shaft end of base material can end cylindrically. This provides the largest possible contact surface for connecting the stem of base material with the applied application material available.
  • the tip region may extend from a front tapered end of the connecting element up to, full shaft diameter or only partially extend in the front region.
  • the front end may be designed in particular punctiform, spherical or flattened.
  • the tip portion is mechanically deformed or machined after being purpose-welded to the free shaft end. In this way, if necessary, different
  • the functional structure may be a self-tapping screw thread.
  • the application material can be applied in particular in the furrow region of the screw thread.
  • a nut thread can be produced in a component whose hardness is greater than the hardness of the base material of the connecting element, which is formed in this case as a thread-forming, and / or hole-forming screw.
  • the layer thickness of the application material is preferably at least 3% of the shaft diameter.
  • 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 formed by the application material.
  • 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. As a result, 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 exclusively by build-up welding on the screw shaft has a rough structure on its surface, so that the thread flank has abrasive properties.
  • 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, after which the
  • Base body of base material is coated with job-welded job material.
  • the coating takes place in such a way that the screw shank has the same outer diameter throughout.
  • the screw-blank coated with the coating material is then rolled so that the wound-applied area and parts of the base material are formed into a thread by rolling.
  • 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 self-tapping screwed even in components of high hardness.
  • the application material can be applied to the base material in beads or in a planar manner, in particular over the whole area.
  • the order of the order material can be made such that only in Furch Scheme the application material is welded. This results, for example, a two-bolt, which has a thread of hardened steel in the front Furch Scheme and in the bearing region of a thread made of stainless steel, in particular of non-latching and acid-resistant steel.
  • a screw can be provided, the thread of which is rolled both in the job-welded Furch Scheme, as well as in Haltebreich.
  • 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.
  • grooves can be introduced into the base material of the screw shank prior to the build-up welding of the application material, in which case the build-up welding takes place.
  • the build-up welding can be done by means of laser deposition welding, arc welding or
  • Plasmapulverrelatess are wellen done.
  • Fig. 1 is a schematic sectional view of a Reibnagels invention
  • Fig. 2a to 2c is a schematic sectional view of a thread-forming according to the invention
  • Fig. 3 is a schematic sectional view of a thread-forming and hole-drilling screw according to the invention.
  • Fig. 1 shows a connecting element 10 for penetrating plate materials, comprising a head 12 and a shaft 14.
  • the head 12 has a drive.
  • a tip 16 formed by build-up welding, in particular laser deposition welding.
  • the job-welded tip is made of a harder material than the shaft 14 and also the head 12, which are preferably made of the same first material.
  • the illustrated connecting element 10 can also penetrate component layers under pressure and rotation which are harder than the first material.
  • the shaft 14 and the head 12 can be ideally designed from a corrosion point of view, the tip can be configured only under hardness considerations.
  • FIGS. 2a to 2c show in a schematic sectional view the production of a thread-forming screw 30 with a hole-forming tip 40.
  • the tip 40 and the thread 42 are different by one of the base material of the shank 34 and the head 32 of the screw
  • Fig. 2a shows the base 35 of the screw comprising the head 32 and the shank 34, both made from the base material.
  • a drive 38 introduced into the head 32 serves to transmit a rotational movement to the connecting element 30.
  • the base element 35 produced in this way is coated with a coating material in a further working step, as shown in FIG. 2b.
  • the application material is a harder material than the base material.
  • the base material in the present case is a stainless steel, whereas the application material is a tempering steel. This is additionally curable.
  • Another hardening process may include, for example, a targeted heating of the tip and the thread.
  • the application material is preferably applied by means of powder coating welding.
  • the application material 36 is applied both in the region of the thread 42 and in the tip region.
  • the connecting element is then subjected to a rolling process in which both the tip and the thread are formed.
  • the finished rolled screw 30 is shown in Fig. 2c.
  • a connecting element can be equipped with a hole-forming tip and also with a thread which are formed of a harder material than is the case for the shank.
  • the material properties of the individual areas can thus have a complementary effect.
  • Fig. 3 shows a further embodiment of a screw 50 according to the invention in a schematic representation.
  • the screw 50 has a drill bit 52 which produces a hole in a component by machining. The production takes place essentially analogously to the description according to FIGS. 2a, 2b.
  • the drill bit 52 is manufactured such that a coating material 54 is applied in the tip region at the free end of the basic material consisting of base member 56, by build-up welding.
  • the application material 54 in the tip region of the screw 50 is not rolled but
  • the thread 58 can also be formed at least partially by application material 54.
  • the application material 54 can take place in one step with the build-up welding of the application material in the tip region, wherein the final formation of the thread is effected by the rolling process after the production of the drill bit 52.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Plasma & Fusion (AREA)
  • Connection Of Plates (AREA)

Abstract

L'invention concerne un élément de liaison 10, 30 destiné à relier au moins deux éléments structuraux superposés, ledit élément de liaison comportant une tige 14, 34 et une tête 12, 32 dotée d'un entraînement 38, la tige 14, 34 se composant d'un matériau de base et se terminant au niveau de son extrémité de tige libre située à l'opposé de la tête 12, 32. L'invention se caractérise en ce qu'une pointe 16, 40 en matériau appliqué est montée à l'extrémité de tige libre, le matériau appliqué étant différent du matériau de base.
EP19708784.4A 2018-02-14 2019-02-14 Élément de liaison Withdrawn EP3752744A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018103326.5A DE102018103326A1 (de) 2018-02-14 2018-02-14 Verbindungselement
PCT/EP2019/053732 WO2019158661A1 (fr) 2018-02-14 2019-02-14 Élément de liaison

Publications (1)

Publication Number Publication Date
EP3752744A1 true EP3752744A1 (fr) 2020-12-23

Family

ID=65657428

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19708784.4A Withdrawn EP3752744A1 (fr) 2018-02-14 2019-02-14 Élément de liaison

Country Status (4)

Country Link
US (1) US20210086254A1 (fr)
EP (1) EP3752744A1 (fr)
DE (1) DE102018103326A1 (fr)
WO (1) WO2019158661A1 (fr)

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Also Published As

Publication number Publication date
DE102018103326A1 (de) 2019-08-14
US20210086254A1 (en) 2021-03-25
WO2019158661A1 (fr) 2019-08-22

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