DE373642C - Auger bit with breaking tooth between the outer teeth - Google Patents

Auger bit with breaking tooth between the outer teeth

Info

Publication number
DE373642C
DE373642C DEB97354D DEB0097354D DE373642C DE 373642 C DE373642 C DE 373642C DE B97354 D DEB97354 D DE B97354D DE B0097354 D DEB0097354 D DE B0097354D DE 373642 C DE373642 C DE 373642C
Authority
DE
Germany
Prior art keywords
outer teeth
auger bit
drill
blade
breaking tooth
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
DEB97354D
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.)
BERLIN ANHALTISCHE MASCHB ACT
Original Assignee
BERLIN ANHALTISCHE MASCHB ACT
Publication date
Priority to DEB97354D priority Critical patent/DE373642C/en
Application granted granted Critical
Publication of DE373642C publication Critical patent/DE373642C/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
    • E21B17/046—Couplings; joints between rod or the like and bit or between rod and rod or the like with ribs, pins, or jaws, and complementary grooves or the like, e.g. bayonet catches
    • 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
    • E21B10/00—Drill bits
    • E21B10/44—Bits with helical conveying portion, e.g. screw type bits; Augers with leading portion or with detachable parts
    • 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
    • E21B10/00—Drill bits
    • E21B10/62—Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable
    • E21B10/627—Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable with plural detachable cutting elements

Description

Die Erfindung betrifft eine Verbesserung an einem Gesteinbohrer, dessen Bohrkrone einen abgeschrägten Mittelzafan, Brechkanten nach Patent 303030 und Außenzähne mit radial gestellten Schneiden besitzt. Dieselbe besteht darin, daß die in an sich bekannter Weise aus Flachmaterial bestehende Bohrklinge so gestellt ist, daß ihre zu beiden Seiten des Mittelzahnes befindlichen Außenzähne entsprechend dem Windungsverlauf des Bohrschaftes entgegengesetzt zueinander gerichtet sind. Hierdurch wird nicht nur eine äußerst stabile, sondern auch eine für die Abführung der gelösten Gesteinsmassen vorteilhafte Klinge erzielt, die ein vielmaliges Nachschleifen ohne merkliche Veränderung ihrer Gestalt und Wirkung zuläßt.The invention relates to an improvement to a rock drill, its drill bit a beveled central zafan, breaking edges according to patent 303030 and external teeth with Has radially placed cutting edges. The same thing consists in the fact that the in itself is known Way made of flat material drill blade is placed so that its on both sides of the central tooth located outer teeth according to the course of the winding of the drill shaft are directed opposite to each other. This not only does an extremely stable one, but also one for the removal of the loosened rock masses A beneficial blade that can be re-sharpened many times without any noticeable change their shape and effect.

Auf der Zeichnung ist der neue Bohrer veranschaulicht.The drawing shows the new drill.

Abb. ι zeigt einen Aufriß, Abb. 2 einen Grundriß und Abb. 3 eine Seitenansicht. An den in bekannter Weise schraubenförmig gewundenen Bohrerschaft α ist die 2S Klinge leicht lösbar befestigt. Die Klinge besteht aus Flachmaterial und sind die Außenzähne c1 entsprechend dem Windungs- j verlauf des Bohrerschaftes entgegengesetzt zueinander gerichtet. Durch diese Formgebung der Klinge wird den starker Beanspruchung unterliegenden Außenzähnett eine wesentlich größere Stabilität verliehen, außerdem aber auch eine bessere Schneid- und Förderwirkung erzielt, weil durch die Schrägrichtung der Zähne der Brustwinkel der Schneiden wesentlich vergrößert wird. Die Außenzähne c1 besitzen· in ihrer ganzen Ausdehnung die gleiche Dicke wie die Klinge selbst, so daß selbst bei häufiger Nachschleifung keinerlei Veränderungen in bezug auf Festigkeit und Wirkung zu befürchten sind. Zur Lagerung der Klinge ist in der Schaftstirnseite eine, in Richtung des größten Durchmessers verlaufende Nut d? mit Haltebacken a3 vorgesehen. Die aus der Nut a? 45 hervorragenden Ecken der Klinge sind weggeschnitten und durch entsprechende Abschrägungen &* dem Schaftgewinde angepaßt, so daß ein ungehinderter Abfluß der gelösten Gesteinsunasse gewährleistet ist. Die leicht lösbare Verbindung der Klinge mit dem Schaft ist durch ein Splinte herbeigeführt.Fig. Ι shows an elevation, Fig. 2 is a plan and Fig. 3 is a side view. The 2 S blade is easily detachably attached to the drill shaft α , which is helically wound in a known manner. The blade consists of flat material and the outer teeth c 1 are directed opposite to one another in accordance with the course of the turns of the drill shank. This shape of the blade gives the external teeth, which are subject to heavy loads, a much greater stability, but also a better cutting and conveying effect, because the oblique direction of the teeth significantly increases the chest angle of the cutting edges. The outer teeth c 1 have the same thickness in their entire extent as the blade itself, so that even with frequent regrinding there is no need to fear any changes in terms of strength and effectiveness. To support the blade, a groove d? provided with holding jaws a 3 . The out of the groove a? 45 protruding corners of the blade have been cut away and adapted to the shaft thread with appropriate bevels & *, so that an unhindered drainage of the loosened rock soil is guaranteed. The easily detachable connection between the blade and the shaft is brought about by a split pin.

Claims (1)

Patent-Anspruch:Patent claim: Schlangenbohrer, dessen Bohrklinge einen abgeschrägten Mittelzahn, Brechkanten nach Patent 303030 und Außenzähne mit radial gestellten Schneiden besitzt, gemäß Patent 373641, dadurch gekennzeichnet, daß die Außenzähne der in an sich bekannter Weise aus Flachmaterial bestehenden Bohrklinge entsprechend dem Windungsverlauf des Bohrerschaftes gebogen sind.Auger bit, the drill blade of which has a beveled central tooth, breaking edges according to patent 303030 and has external teeth with radially positioned cutting edges, according to patent 373641, characterized in that the external teeth of the in drill blade made of flat material in a known manner accordingly are bent along the course of the winding of the drill shaft. Hierzu 1 Blatt Zeichnungen.1 sheet of drawings.
DEB97354D Auger bit with breaking tooth between the outer teeth Expired DE373642C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEB97354D DE373642C (en) Auger bit with breaking tooth between the outer teeth

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB97354D DE373642C (en) Auger bit with breaking tooth between the outer teeth

Publications (1)

Publication Number Publication Date
DE373642C true DE373642C (en) 1923-04-14

Family

ID=6989184

Family Applications (1)

Application Number Title Priority Date Filing Date
DEB97354D Expired DE373642C (en) Auger bit with breaking tooth between the outer teeth

Country Status (1)

Country Link
DE (1) DE373642C (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2639122A (en) * 1949-11-01 1953-05-19 Gerald A Petersen Pilot bit for earth augers
DE2216760A1 (en) * 1972-04-07 1973-10-18 Hawera Probst Kg Hartmetall ROCK DRILLS
US5915485A (en) * 1997-01-13 1999-06-29 Mcatavey; Dennis B. Ski post hole auger bit

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2639122A (en) * 1949-11-01 1953-05-19 Gerald A Petersen Pilot bit for earth augers
DE2216760A1 (en) * 1972-04-07 1973-10-18 Hawera Probst Kg Hartmetall ROCK DRILLS
US5915485A (en) * 1997-01-13 1999-06-29 Mcatavey; Dennis B. Ski post hole auger bit

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