DE1217903B - Drill head - Google Patents

Drill head

Info

Publication number
DE1217903B
DE1217903B DEB81274A DEB0081274A DE1217903B DE 1217903 B DE1217903 B DE 1217903B DE B81274 A DEB81274 A DE B81274A DE B0081274 A DEB0081274 A DE B0081274A DE 1217903 B DE1217903 B DE 1217903B
Authority
DE
Germany
Prior art keywords
drill head
metal plate
cuttings
central
hard metal
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.)
Pending
Application number
DEB81274A
Other languages
German (de)
Inventor
Martin Stoll
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.)
Beteiligungs und Patentverwaltungs GmbH
Original Assignee
Beteiligungs und Patentverwaltungs 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 Beteiligungs und Patentverwaltungs GmbH filed Critical Beteiligungs und Patentverwaltungs GmbH
Priority to DEB81274A priority Critical patent/DE1217903B/en
Priority to CH444466A priority patent/CH454064A/en
Priority to NL6604364A priority patent/NL6604364A/xx
Publication of DE1217903B publication Critical patent/DE1217903B/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/26—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by impact tools, e.g. by chisels or other tools having a cutting edge
    • 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
    • E21B10/36—Percussion drill bits
    • E21B10/38—Percussion drill bits characterised by conduits or nozzles for drilling fluids

Landscapes

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

Description

Bohrkopf Die Erfindung betrifft einen Bohrkopf mit zentraler Bohrkleinabsaugung für Bohrhämmer, in dem parallel zu seiner Achse eine Hartmetallplatte angeordnet ist.Drilling head The invention relates to a drilling head with a central suction for drilling cuttings for rotary hammers, in which a hard metal plate is arranged parallel to its axis is.

Bekannt sind bereits Schlagbohrköpfe, bei denen zur Absaugung des Bohrkleins nach innen konisch verlaufende Bohrungen angeordnet sind. Nachteilig bei diesen bekannten Schlagbohrköpfen ist, daß das Anbringen der Bohrungen und insbesondere das konische Aufreiben der Bohrungen von innen verhältnismäßig teuer ist. Ferner wird bei diesen bekannten Schlagbohrköpfen ein etwa kreisförmiger Bereich der Bohrlochsohle um die Werkzeugspitze herum nicht einwandfrei sauber abgesaugt, so daß sich ein Bohrkleinpolster bildet, durch das der Bohrfortschritt gehemmt und ein starker Verschleiß des Schaftmaterials im Bereich der Schneidenspitze hervorgerufen wird.Percussion drill heads are already known, where the suction of the Drill cuttings are arranged inwardly conical holes. Disadvantageous in these known percussion drill heads that the drilling of the holes and in particular the conical reaming of the holes from the inside is relatively expensive. Further is an approximately circular area of the borehole bottom in these known percussion drill heads around the tool tip is not properly vacuumed, so that a Cushions of drilling cuttings are formed, which inhibit drilling progress and cause heavy wear of the shaft material in the area of the cutting tip.

Der Zweck der vorliegenden Erfindung ist es, diese Nachteile zu vermeiden. Dieser Zweck wird gemäß der Erfindung dadurch erreicht, daß der Bohrkopf mit äußeren Aussparungen zur Frischluftzufuhr sowie mit einem zentralen, nach innen aufgeweiteten Kanal mit elliptischem Querschnitt für die Bohrkleinabsaugung versehen ist, der durch die Hartmetallplatte senkrecht zur längeren Querschnittachse mittig geteilt ist.The purpose of the present invention is to avoid these drawbacks. This purpose is achieved according to the invention in that the drill head with external Recesses for fresh air supply as well as with a central, inwardly widened Channel is provided with an elliptical cross-section for the suction of cuttings, the divided in the middle by the hard metal plate perpendicular to the longer cross-sectional axis is.

In der Zeichnung ist der der Erfindung zugrunde liegende Schlagbohrkopf in Form eines Ausführungsbeispieles schematisch dargestellt. Es zeigt F i g. 1 eine Seitenansicht, F i g. 2 eine Draufsicht.In the drawing, the hammer drill head on which the invention is based is shown schematically in the form of an exemplary embodiment. It shows F i g. 1 is a side view, FIG. 2 is a plan view.

Wie aus den F i g. 1 und 2 hervorgeht, ist der Schlagbohrkopf mit äußeren Aussparungen 1 versehen, die der Zufuhr von Frischluft in das Bohrloch dienen. Die F i g. 1 und 2 zeigen ferner einen zentralen, nach innen aufgeweiteten Kanal mit einem elliptischen Querschnitt 2. Durch diesen Kanal, der durch eine Hartmetallplatte 3 senkrecht zur längeren Querschnittachse mittig geteilt ist, wird das Bohrklein abgesaugt.As shown in FIGS. 1 and 2, the hammer drill head is provided with external recesses 1 which are used to supply fresh air into the borehole. The F i g. 1 and 2 also show a central, inwardly widened channel with an elliptical cross-section 2. The drill cuttings are sucked off through this channel, which is divided in the middle by a hard metal plate 3 perpendicular to the longer cross-sectional axis.

Durch den einfachen Aufbau des Bohrkopfes ist es vorteilhafterweise möglich, sowohl die innere als auch die äußere Form in einem Arbeitsgang durch Schmieden, Gießen, Spritzen usw. herzustellen. Eine weitere Bearbeitung des Körpers erübrigt sich.It is advantageous due to the simple structure of the drill head possible, both the inner and the outer shape in one operation by forging, To manufacture pouring, spraying, etc. No further processing of the body is necessary themselves.

Abgesehen von der wesentlich einfacheren und damit mit geringeren Kosten verbundenen Herstellung der neuen Schlagbohrköpfe, werden durch diese eine einwandfreie Absaugung des Bohrkleins aus dem Bohrloch erreicht und Verstopfungen des Bohrers verhindert. Darüber hinaus ist der Bohrfortschritt wesentlich höher, und der bei den bekannten Schlagbohrköpfen auftretende Verschleiß des Schaftmaterials im Bereich der Schneidenspitze wird verhindert.Apart from the much simpler one and thus with less Cost-related manufacturing of the new percussion drill bits are made possible by this one Perfect suction of the cuttings from the borehole and blockages achieved of the drill prevented. In addition, the drilling progress is much higher, and the wear of the shaft material that occurs with the known percussion drill heads in the area of the cutting edge is prevented.

Claims (1)

Patentanspruch: Bohrkopf mit zentraler Bohrkleinabsaugung für Bohrhämmer, in dem parallel zu seiner Achse eine Hartmetallplatte angeordnet ist, d a d u r c h g c -k e n n z e i c h n e t, daß der Bohrkopf mit äußeren Aussparungen (1) sowie mit einem zentralen, nach innen aufgeweiteten Kanal mit elliptischem Querschnitt (2) für die Bohrkleinabsaugung versehen ist, der durch die Hartmetallplatte (3) senkrecht zur längeren Que-rschnittsachse mittig geteilt ist. In Betracht gezogene Druckschriften: USA.-Patentschrift Nr. 2 507 221.Patent claim: drilling head with a central Bohrkleinabsaugung for rotary hammers, a hard metal plate is in the parallel to its axis arranged d a d u rch gc -kennzeichnet that the drill head with outer recesses (1) and with a central, inwardly widened channel with an elliptical cross-section ( 2) is provided for the extraction of cuttings, which is divided in the middle by the hard metal plate (3) perpendicular to the longer cross-sectional axis. Contemplated publications: USA. Patent No. 2,507,221..
DEB81274A 1965-04-02 1965-04-02 Drill head Pending DE1217903B (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DEB81274A DE1217903B (en) 1965-04-02 1965-04-02 Drill head
CH444466A CH454064A (en) 1965-04-02 1966-03-28 Drill head
NL6604364A NL6604364A (en) 1965-04-02 1966-04-01

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB81274A DE1217903B (en) 1965-04-02 1965-04-02 Drill head

Publications (1)

Publication Number Publication Date
DE1217903B true DE1217903B (en) 1966-06-02

Family

ID=6981029

Family Applications (1)

Application Number Title Priority Date Filing Date
DEB81274A Pending DE1217903B (en) 1965-04-02 1965-04-02 Drill head

Country Status (3)

Country Link
CH (1) CH454064A (en)
DE (1) DE1217903B (en)
NL (1) NL6604364A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1255065B (en) * 1966-07-30 1967-11-30 Richard Karnebogen Impact drill head for compressed air operated retractable hammers
EP0048908A1 (en) * 1980-09-26 1982-04-07 Hawera Probst GmbH + Co. Drill, particularly for rotary percussion drilling

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4165790A (en) * 1976-12-10 1979-08-28 Fansteel Inc. Roof drill bit

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2507221A (en) * 1946-08-19 1950-05-09 Phipps Orville Single edge percussion bit

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2507221A (en) * 1946-08-19 1950-05-09 Phipps Orville Single edge percussion bit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1255065B (en) * 1966-07-30 1967-11-30 Richard Karnebogen Impact drill head for compressed air operated retractable hammers
EP0048908A1 (en) * 1980-09-26 1982-04-07 Hawera Probst GmbH + Co. Drill, particularly for rotary percussion drilling

Also Published As

Publication number Publication date
NL6604364A (en) 1966-10-03
CH454064A (en) 1968-04-15

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