DE423467C - Rock drill with spiral grooves - Google Patents

Rock drill with spiral grooves

Info

Publication number
DE423467C
DE423467C DEL62577D DEL0062577D DE423467C DE 423467 C DE423467 C DE 423467C DE L62577 D DEL62577 D DE L62577D DE L0062577 D DEL0062577 D DE L0062577D DE 423467 C DE423467 C DE 423467C
Authority
DE
Germany
Prior art keywords
drill
rock drill
spiral grooves
cutting edges
grooves
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
DEL62577D
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
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 Individual filed Critical Individual
Priority to DEL62577D priority Critical patent/DE423467C/en
Application granted granted Critical
Publication of DE423467C publication Critical patent/DE423467C/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK 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
    • E21B10/445—Bits with helical conveying portion, e.g. screw type bits; Augers with leading portion or with detachable parts percussion type, e.g. for masonry

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)

Description

(L(L

Den Gegenstand der vorliegenden Erfindung bildet ein Gesteinsbohrer.The subject of the present invention is a rock drill.

Bekannt sind Bohrer mit zwei Nuten und meißelartiger. Spitze. Diese schlecht unterstützten Schneiden haben den Nachteil, daß sich der Bohrer beim Arbeiten von seinem Punkt verschiebt, das Bohrloch ungenau und die benachbarte Stelle beschädigt wird.Drills with two flutes and chisel-like bits are known. Top. These poorly supported Cutting have the disadvantage that the drill shifts when working from its point, the drill hole inaccurate and the neighboring point is damaged.

Man hatte bereits vorgeschlagen, mehr als ίο zwei Nuten anzuordnen, ferner die gezahnte Ausbildung der Schneiden durch Zahnlücken zu unterbrechen. Auch das hat den gewünschten Erfolg nicht herbeigeführt, ebensowenig die Unterteilung der Schneiden durch gestaffeite Anordnung an Flachbohrern, da hier die zylindrische Bohrerführung fehlt.It had already been suggested to arrange more than ίο two grooves, also the toothed one Interrupt training of the cutting edges by tooth gaps. That too has the desired Success was not brought about, nor was the division of the cutting edges by staggered sides Arrangement on flat drills, as the cylindrical drill guide is missing here.

Zur Beseitigung dieser Nachteile ist ein neuer Bohrer erdacht, welcher zum Durchbohren von steinartigem Material, wie z. B. Mauerstein-, hartgebrannter Klinkerstein-, ao Eisenbeton-, Kachel-, Marmor-, glasierter Wand, insbesondere bei Durchlegung von Stark- und Schwachstromkabeln, Be- und Entwässerungsanlagen, Gasröhren, bei Naturfelsen zur Herstellung von Bohrlöchern für Sprengarbeiten, zu verwenden ist und durch Nachschleifen stets wieder gebrauchsfertig wird.To eliminate these disadvantages, a new drill has been devised, which for drilling through of stone-like material, such as. B. brick, hard-fired clinker, ao Reinforced concrete, tile, marble, glazed wall, especially when laying through High and low current cables, irrigation and drainage systems, gas pipes, on natural rocks for making drill holes for blasting work and is always ready for use again by regrinding will.

Die Erfindung ist in der Zeichnung bildlich dargestellt und zeigt in Abb. 1 seine Ansicht und in Abb. 2 seine Draufsicht.The invention is illustrated in the drawing and shows its view in Fig. 1 and in Fig. 2 its top view.

Der neue Bohrer besteht aus einem Stahlzylinder a, dessen Seitenflächen mindestens drei spiralförmige Nuten b zur Abführung des ausgebohrten Materials tragen. Diese Nuten sind durch Nachfeilen oder zweckmäßigerThe new drill consists of a steel cylinder a, the side surfaces of which have at least three spiral-shaped grooves b for the removal of the drilled material. These grooves are more appropriate by filing or

durch eine nach der Nutsohle zu entsprechend zugespitzte Kehlform so weit ausgebildet, daß sie in den Bereich der Spitzenschneide herani eichen. Um ein leichtes und gleichmäßiges Arbeiten des Bohrers zu erzielen, sind die Schneiden c, c, c" usw., wie an sich bereits bekannt, staffelförrnig unterteilt, so daß sie bis zur Spitze symmetrisch stufenartig verlaufen Der Zweck der Absetzung des Kernesformed so far by a throat shape correspondingly tapered to the groove sole that they calibrate into the area of the tip cutting edge. In order to achieve an easy and even working of the drill, the cutting edges c, c, c " etc., as already known, are subdivided in a staggered manner, so that they run symmetrically step-like up to the tip. The purpose of the removal of the core

ίο liegt in der Schaffung eines kleinen Vorbohrers als Führung für das später herzustellende große Bohrloch. Der mit derselben Nutenzahl versehene Schaft verläuft in drei Schneidekanten d, die in einer Spitze ο enden. Jede schneidetragende Stufe am Ende des Bohrers ist derart geschliffen, daß die schneidebildende Fläche einen für die Härte des zu bohrenden Materials notwendigen Winkel L bildet und dachartig verläuft. Die stufenartige Form hat den Vorteil, daß durch sie das Bohren erheblich erleichtert und schneller ausgeführt wird. Das obere Ende des Bohrers trägt einen Kopf e, um Hammerschläge zu empfangen. Durch diesen Kopf führt ein Bolzen /, um notwendige Drehbewegungen des Bohrers zu ermöglichen.ίο lies in the creation of a small pilot drill as a guide for the large drill hole to be made later. The shaft, which is provided with the same number of grooves, runs in three cutting edges d, which end in a point ο . Each cutting step at the end of the drill is ground in such a way that the cutting surface forms an angle L necessary for the hardness of the material to be drilled and runs like a roof. The step-like shape has the advantage that it makes drilling much easier and quicker. The top end of the drill carries a head e to receive hammer blows. A bolt / passes through this head to enable the drill to rotate as required.

Claims (1)

Patent- Anspruch:Patent claim: Mit spiralförmigen Nuten versehener Gesteinsbohrer mit aus der Schaftform durch Nachschleifen stetig zu erneuernden Schneiden, dadurch gekennzeichnet, daß zur Bildung eines der Herstellung des großen Bohrloches stetig vorangehenden kleinen Zentrierloches, zur Vermeidung des Verlaufens des Bohrloches und zur genauen Einhaltung der bestimmten Lochlage, die zwischen den mindestens dreifach angeordneten, nach der Sohle· zu zugespitzten Nuten verbleibenden Rippen, an denen die Schneiden durch symmetrische (dachartige) Abschrägung gebildet sind, von der Spitze aus stufenartig abgesetzt und damit jede Schneide, wie an sich bekannt, staffeiförmig unterteilt ist.Rock drill provided with spiral grooves with out of the shank shape cutting edges to be continuously renewed by regrinding, characterized in that to form a small centering hole that continuously precedes the production of the large borehole, to avoid it the progression of the borehole and the exact compliance with the specific hole position, those between the at least three-fold, pointed towards the sole Grooves remaining ribs on which the cutting edges are formed by symmetrical (roof-like) chamfering are stepped off from the tip and thus each cutting edge, as is known per se, is divided into a staggered shape. Abb. i.Fig.i.
DEL62577D 1925-02-21 1925-02-21 Rock drill with spiral grooves Expired DE423467C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEL62577D DE423467C (en) 1925-02-21 1925-02-21 Rock drill with spiral grooves

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEL62577D DE423467C (en) 1925-02-21 1925-02-21 Rock drill with spiral grooves

Publications (1)

Publication Number Publication Date
DE423467C true DE423467C (en) 1926-01-05

Family

ID=7280639

Family Applications (1)

Application Number Title Priority Date Filing Date
DEL62577D Expired DE423467C (en) 1925-02-21 1925-02-21 Rock drill with spiral grooves

Country Status (1)

Country Link
DE (1) DE423467C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5836064A (en) * 1996-03-01 1998-11-17 Chiron-Werke Gmbh & Co. Kg Machining center

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5836064A (en) * 1996-03-01 1998-11-17 Chiron-Werke Gmbh & Co. Kg Machining center

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