DE497231C - Rock drill for impact drills, the cutting head of which is provided with a nut thread and is screwed directly onto the end part of the drill rod provided with a screw thread - Google Patents

Rock drill for impact drills, the cutting head of which is provided with a nut thread and is screwed directly onto the end part of the drill rod provided with a screw thread

Info

Publication number
DE497231C
DE497231C DEW77228D DEW0077228D DE497231C DE 497231 C DE497231 C DE 497231C DE W77228 D DEW77228 D DE W77228D DE W0077228 D DEW0077228 D DE W0077228D DE 497231 C DE497231 C DE 497231C
Authority
DE
Germany
Prior art keywords
cutting head
thread
end part
drill
directly onto
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
DEW77228D
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.)
Individual
Original Assignee
Individual
Publication date
Priority to DEW77228D priority Critical patent/DE497231C/en
Application granted granted Critical
Publication of DE497231C publication Critical patent/DE497231C/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/02—Couplings; joints
    • E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
    • E21B17/042—Threaded

Description

Gesteinsbohrer für Schlagbohrmaschinen, dessen mit Muttergewinde versehener Schneidkopf unmittelbar auf den mit Schraubengewinde versehenen Endteil der Bohrstange aufgeschraubt ist Gegenstand vorliegender Erfindung ist ein Gesteinsbohrer für Schlagbohrmaschinen, dessen mit Muttergewinde versehener Schneidkopf unmittelbar auf den mit Schraubengewinde versehenen Endteil der Bohrstange aufgeschraubt ist.Rock drill bits for impact drills, the one provided with a nut thread Cutting head directly onto the screw-threaded end of the boring bar The subject of the present invention is a rock drill for impact drills, whose cutting head provided with nut thread directly on the one with screw thread provided end part of the drill rod is screwed.

Bisher vorgeschlagene Bohrer und Werkzeuge ähnlicher Art hatten den Nachteil, daß die Verbindung zwischen Schneidkopf und Bohrstange lediglich mittels des Gewindes erzielt wurde, so daß das Gewinde durch die Stöße beim Bohren rasch abgenutzt und zusammengedrückt wurde, wodurch der Schneidkopf sich auf der Bohrstange lockerte oder ganz abfiel.Previously proposed drills and tools of a similar type had the Disadvantage that the connection between the cutting head and boring bar only by means of of the thread was achieved, so that the thread through the impacts when drilling quickly It was worn out and compressed causing the cutting head to rest on the boring bar loosened or fell off completely.

Dieser Nachteil soll nun durch den Gesteinsbohrer nach vorliegender Erfindung beseitigt werden.This disadvantage is now said to be due to the rock drill according to the present Invention to be eliminated.

Dies wird beim Gesteinsbohrer gemäß der Erfindung dadurch erreicht, daß der Schneidkopf mit einer zentralen, kegelförmigen Vertiefung auf dem kongruent kegelförmigen Ende der Bohrstange aufsitzt.In the rock drill according to the invention, this is achieved by that the cutting head with a central, conical recess on the congruent tapered end of the boring bar is seated.

Dank dieser Ausbildung kann der Schneidkopf auf der Bohrstange fest angezogen werden und stützt sich beim Bohren mittels seiner kegeligen Vertiefung auf dem eingepaßten Ende der Bohrstange ab, so daß diese Kegelfläche alle Stöße der Schlagbewegung, d. h. den Vorschubdruck, aufnimmt und das Gewinde sozusagen entlastet ist. Hierdurch tritt auch kein Verschleiß des Gewindes ein.Thanks to this training, the cutting head can be firmly attached to the boring bar be tightened and is supported during drilling by means of its conical recess on the fitted end of the boring bar, so that this conical surface all joints the stroke movement, d. H. the feed pressure, absorbs and the thread so to speak is relieved. As a result, there is also no wear on the thread.

Ein Ausführungsbeispiel des Erfindungsgegenstandes ist in der Zeichnung dargestellt, und zwar zeigt: Abb. i das Kopfende eines Bohrers in Längsansicht; Abb. 2 ist eine Stirnansicht desselben; Abb. 3 ist - ein Längsschnitt nach Linie III-III in Abb. 2 und Abb. d. nach Linie IV-IV in Abb. 2.An embodiment of the subject matter of the invention is shown in the drawing shown, namely: Fig. i the head end of a drill in a longitudinal view; Fig. 2 is an end view of the same; Fig. 3 is a longitudinal section along the line III-III in Fig. 2 and Fig. D. according to line IV-IV in Fig. 2.

i ist die am Ende mit Gewinde 2 versehene Bohrstange, auf welcher der Schneidkopf 3 angeschraubt ist. Letzterer ist von gedrungener Form, kegelstumpfförmig gegen das Schneidende hin leicht verdickt und hat zwei geschliffene, parallele Schneidkanten 4. nebst einer kleinen zentralen Bohrung ä. Das gezeichnete Gewinde ist Rechtsgewinde. der Bohrer ist somit für Rechtsdrehung.i is the threaded 2 end boring bar on which the cutting head 3 is screwed on. The latter is compact in shape, frustoconical slightly thickened towards the cutting end and has two ground, parallel cutting edges 4. in addition to a small central hole. The drawn thread is right-hand thread. the drill is thus for clockwise rotation.

Claims (1)

PATENTANSPRUCH: Gesteinsbohrer für Schlagbohrmaschinen, dessen mit Muttergewinde versehener Schneidkopf unmittelbar auf den mit Schraubengewinde versehenen Endteil der Bohrstange aufgeschraubt ist, dadurch gekennzeichnet, daß der Schneidkopf mit einer zentralen, kegelförmigen Vertiefung auf dem kongruent kegelförmigen Ende der Bohrstange aufsitzt.PATENT CLAIM: Rock drill bits for impact drills, whose with Nut thread provided cutting head directly on the provided with screw thread End part of the boring bar is screwed on, characterized in that the cutting head with a central, conical recess on the congruent conical end the boring bar is seated.
DEW77228D Rock drill for impact drills, the cutting head of which is provided with a nut thread and is screwed directly onto the end part of the drill rod provided with a screw thread Expired DE497231C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEW77228D DE497231C (en) Rock drill for impact drills, the cutting head of which is provided with a nut thread and is screwed directly onto the end part of the drill rod provided with a screw thread

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEW77228D DE497231C (en) Rock drill for impact drills, the cutting head of which is provided with a nut thread and is screwed directly onto the end part of the drill rod provided with a screw thread

Publications (1)

Publication Number Publication Date
DE497231C true DE497231C (en) 1930-05-05

Family

ID=7610302

Family Applications (1)

Application Number Title Priority Date Filing Date
DEW77228D Expired DE497231C (en) Rock drill for impact drills, the cutting head of which is provided with a nut thread and is screwed directly onto the end part of the drill rod provided with a screw thread

Country Status (1)

Country Link
DE (1) DE497231C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4314868A1 (en) * 1993-05-05 1994-11-10 Hawera Probst Kg Hartmetall Drilling tool

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4314868A1 (en) * 1993-05-05 1994-11-10 Hawera Probst Kg Hartmetall Drilling tool
US5462130A (en) * 1993-05-05 1995-10-31 Hawera Probst Gmbh Drilling tool
DE4314868C2 (en) * 1993-05-05 2002-05-16 Hawera Probst Kg Hartmetall drilling

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