DE1938944U - TIN DRILLING SCREW. - Google Patents

TIN DRILLING SCREW.

Info

Publication number
DE1938944U
DE1938944U DE1966L0041428 DEL0041428U DE1938944U DE 1938944 U DE1938944 U DE 1938944U DE 1966L0041428 DE1966L0041428 DE 1966L0041428 DE L0041428 U DEL0041428 U DE L0041428U DE 1938944 U DE1938944 U DE 1938944U
Authority
DE
Germany
Prior art keywords
tin
drilling screw
subsequent
screw
thread
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.)
Expired
Application number
DE1966L0041428
Other languages
German (de)
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.)
Lennewerk Altena Schra GmbH
Original Assignee
Lennewerk Altena Schra GmbH
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 Lennewerk Altena Schra GmbH filed Critical Lennewerk Altena Schra GmbH
Priority to DE1966L0041428 priority Critical patent/DE1938944U/en
Publication of DE1938944U publication Critical patent/DE1938944U/en
Expired 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
    • F16B25/001—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
    • F16B25/0036—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw
    • F16B25/0084—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 geometric details of the tip
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Drilling Tools (AREA)

Description

Postfach 77 3. Februar I966P.O. Box 77 February 3, 1966

BlechbohrtrelbschraubeSelf-tapping screw

Die Neuerung betrifft eine Blechbohrtreibschraube zum Befestigen von Gegenständen an Blech, beispielsweise eines Bleches an einem anderen. Solche Schrauben besitzen eine Bohrspitze, durch die in dem Blech zunächst ein Loch und anschließend in dem Loch Gewindegänge erzeugt werden.The innovation relates to a sheet metal drilling drive screw for fastening objects to sheet metal, for example one sheet on another. Such screws have a drill bit through which in the sheet metal initially a hole and then threads are created in the hole.

Es sind bereits solche Blechbohrtrelbschrauben bekannt, die einen üblichen Gewindeteil konstanter Höhe, einen daran anschließenden Gewindeteil abnehmender Gewindehö'he, einen folgenden gewindelosen Schaft und eine anschließende, durch Kaltschlagen erzeugte, mit Spannuten versehene Bohrspitze aufweisen.There are already such Blechbohrtrelb screws known, which have a conventional threaded part of constant height, a adjoining thread part of decreasing thread height, a subsequent threadless shank and a subsequent one, produced by cold hammering, with flutes have provided drill bit.

Diese Bohrspitzen dieser bekannten Blechbohrtreibschrauben haben einen verhältnismäßig kleinen Spitzenwinkel. Gemäß der Erfindung besitzt die Bohrspitze einer solchen Blechbohrtreibschraube einen Spitzenwinkel von etwa 12o°. Ein solcher Spitzenwinkel hat insbesondere den Vorteil, daß die Schneidkante bei der Einsatzhärtung nicht mehr so tief durchgekohlt wird wie bisher undThese drill bits of these known sheet metal drilling drive screws have a relatively small point angle. According to the invention, the drill point of such a sheet metal drill drive screw has a point angle of about 12o °. Such a point angle has the particular advantage that the cutting edge during the case hardening is no longer as deeply charred as before and

66/3701 daß daher die Schneidkanten weniger leicht ausbrechen.66/3701 that therefore the cutting edges break out less easily.

„ 2 -"2 -

— p —- p -

In der Zeichnung ist die Neuerung an einem Ausfuhrungsbeispiel erläutert. Es zeigt:The drawing shows the innovation in an exemplary embodiment explained. It shows:

Pig. 1 in stark vergrößertem Maßstab eine Schraube gemäß der Neuerung in Seitenansicht;Pig. 1 on a greatly enlarged scale, a screw according to the innovation in side view;

Pig. 2 eine Ansicht von unten nach Pfeil "A" der Fig. 1;Pig. FIG. 2 is a view from below, looking at arrow "A" in FIG. 1;

Pig, 3 eine Seitenansicht der Flg. 1.Pig, 3 a side view of Flg. 1.

Die dargestellte Schraube besitzt einen Kopf 1 mit einem Kreuzschlitz und einem zylindrischen Schaft 2. Das an den Kopf anschließende Teil 2a des Schaftes ist mit einem Gewinde konstanter Gewindehöhe versehen. An dem Teil 2a schließt sich ein Teil 2b an, dessen Gewinde die gleiche Steigung wie das Gewinde des Teils 2a, aber, zur Schraubenspitze hin abnehmende Gewindehöhe aufweist. Anschließend ist ein glatter Schaftteil 2c vorgesehen, an dem eine mit zwei Längsnuten J versehene Spitze sitzt. Die Bohrspitze 4 besitzt einen Spitzen-Winkel von 12o°.The screw shown has a head 1 with a cross recess and a cylindrical shaft 2. The part 2a of the shaft adjoining the head is provided with a thread of constant thread height. At the part 2a is followed by a part 2b, the The thread has the same pitch as the thread of part 2a, but the thread height decreases towards the screw tip having. A smooth shaft part 2c is then provided, on which one is provided with two longitudinal grooves J. Tip sits. The drill point 4 has a point angle of 12o °.

Derartige Schrauben sind besonders geeignet für Bleche aus weichen Werkstoffen, z.B. aus Leichtmetall.Such screws are particularly suitable for sheets made of soft materials, e.g. made of light metal.

Schutzanspruch:Protection claim:

Claims (1)

RA.066 8W-5.2.66RA.066 8W-5.2.66 Schutzanspruch:Protection claim: Blechbohrtreibschraube mit einem Gewindeteil konstanter Höhe, einem daran anschließenden Gewindeteil abnehmender Gewindehöhe, einem folgenden gewindelosen Schaft und einer anschließenden, durch Kaltschlagen erzeugten, mit Spannuten versehenen Bohrspitze, dadurch gekennzeichnet, daß die Bohrspitze einen Spitzenwinkel von etwa 12o° aufweist.Tapping screw with a threaded part of constant height and an adjoining threaded part decreasing thread height, a subsequent threadless shaft and a subsequent one by cold hammering produced drill point provided with flutes, characterized in that the drill point has a point angle of about 12o °.
DE1966L0041428 1966-02-05 1966-02-05 TIN DRILLING SCREW. Expired DE1938944U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1966L0041428 DE1938944U (en) 1966-02-05 1966-02-05 TIN DRILLING SCREW.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1966L0041428 DE1938944U (en) 1966-02-05 1966-02-05 TIN DRILLING SCREW.

Publications (1)

Publication Number Publication Date
DE1938944U true DE1938944U (en) 1966-05-18

Family

ID=33355752

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1966L0041428 Expired DE1938944U (en) 1966-02-05 1966-02-05 TIN DRILLING SCREW.

Country Status (1)

Country Link
DE (1) DE1938944U (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2811567A1 (en) * 1977-03-16 1978-09-21 Nl Industries Inc DRILLING SCREW AND METHOD AND DEVICE FOR THEIR PRODUCTION
FR2586275A1 (en) * 1985-08-14 1987-02-20 Usm Corp SELF-DRILLING AND SELF-TAPPING ASSEMBLY
DE4112591C1 (en) * 1991-04-17 1992-08-27 Sfs Stadler Holding Ag, Heerbrugg, Ch
EP1764519A1 (en) * 2005-09-20 2007-03-21 Taiwan Shan Yin International Co., Ltd. Screw with multiple cutting ridges in end section

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2811567A1 (en) * 1977-03-16 1978-09-21 Nl Industries Inc DRILLING SCREW AND METHOD AND DEVICE FOR THEIR PRODUCTION
FR2586275A1 (en) * 1985-08-14 1987-02-20 Usm Corp SELF-DRILLING AND SELF-TAPPING ASSEMBLY
DE4112591C1 (en) * 1991-04-17 1992-08-27 Sfs Stadler Holding Ag, Heerbrugg, Ch
EP1764519A1 (en) * 2005-09-20 2007-03-21 Taiwan Shan Yin International Co., Ltd. Screw with multiple cutting ridges in end section

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