EP0516581B1 - Bohr- und Meisselwerkzeug mit Grundkörper und Schneidkörper - Google Patents

Bohr- und Meisselwerkzeug mit Grundkörper und Schneidkörper Download PDF

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Publication number
EP0516581B1
EP0516581B1 EP92810283A EP92810283A EP0516581B1 EP 0516581 B1 EP0516581 B1 EP 0516581B1 EP 92810283 A EP92810283 A EP 92810283A EP 92810283 A EP92810283 A EP 92810283A EP 0516581 B1 EP0516581 B1 EP 0516581B1
Authority
EP
European Patent Office
Prior art keywords
recess
main body
tool
reliefs
tool according
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 - Lifetime
Application number
EP92810283A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0516581A2 (de
EP0516581A3 (en
Inventor
Maximilian Stöck
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.)
Hilti AG
Original Assignee
Hilti AG
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 Hilti AG filed Critical Hilti AG
Publication of EP0516581A2 publication Critical patent/EP0516581A2/de
Publication of EP0516581A3 publication Critical patent/EP0516581A3/de
Application granted granted Critical
Publication of EP0516581B1 publication Critical patent/EP0516581B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
    • E21B10/58—Chisel-type inserts
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T408/00—Cutting by use of rotating axially moving tool
    • Y10T408/89—Tool or Tool with support
    • Y10T408/909—Having peripherally spaced cutting edges

Definitions

  • the invention relates to a drilling and chiseling tool according to the generic term of claim 1.
  • Drilling and chiseling tools of the type mentioned have been around for many Years and have been used accordingly also proven. However, due to the extremely different material properties between the steel used as the base body and that as the cutting body used carbide problems. On the one hand, these problems can during production and on the other hand only during use of the tools arise.
  • FR-A-1.05.105 there are different cross-sectional shapes for Recesses for hard metal inserts and for hard metal inserts in rock drills described.
  • the recesses have an essentially U-shaped axial section Profile on and can expand or to the free front end of the body narrow.
  • the gap between the hard metal insert and the boundary walls the recess in the base body is completely filled with solder.
  • a rock drill is known, the main body of which Has recess for a hard metal insert, the one in axial section has a substantially U-shaped shape.
  • the base of the recess is designed in this way and the hard metal insert is soldered in such a way that the thickness of the solder layer on the Sides of the carbide insert is greater than its thickness between the base of the Carbide insert and the recess.
  • the gap between the carbide insert and the boundary walls of the recess are filled with solder.
  • the solder seeps into the area below the base of the hard metal insert by capillary action. This range is depending on the flow behavior of the solder, gap width and capillary action more or less completely filled with solder.
  • the invention has for its object a drilling and chiseling tool to create, with the resulting stresses in use of the individual parts can be avoided so that this increases the overall service life of the tool.
  • the object is achieved in that additional cutouts are provided, being such Recesses are provided in the area of the longitudinal ends of the side walls of the recess and expediently normal to the main axis and extend parallel to the side walls of the recess and are free of solder.
  • the effect of such cutouts essentially exists in that a certain flexibility of the basic body in the critical areas, ie in the area of the longitudinal ends of the Recess is achieved.
  • the measure according to the invention on a drilling and chiseling tool builds shear stress peaks in the area of the longitudinal ends the recess. This creates about the parallel length extending to the main axis even distribution of the shear stresses in the the connection between Basic body and cutting body creating solder seam. Overuse, those to destroy the solder seam as well as the neighboring one Lead areas of base body and cutting body, are avoided.
  • the variation the thickness of the solder seam is expediently such that that the thickness increases towards both longitudinal ends.
  • the solder seam is thus in those areas where the highest shear stresses occur, formed thicker. As a result, in there is more material available in those areas, so that these areas are able to handle the shear stresses to better balance and thus reduce peaks.
  • the recesses can, for example, as bores be formed, which the base body in the area of the Machining end of the tool facing away from the longitudinal end of the side walls. Through such holes the base body in the bottom area of the recess a certain Compliance. This allows shear stress peaks be dismantled and above all one if necessary in the floor area relieves the existing solder seam in such a way that breaks no longer occur here.
  • the recesses For reducing the shear stress peaks in the area of the machining side
  • the recesses In the end it is suggested the recesses to be designed as open grooves. These preferably run Grooves parallel to the cutting body over the entire front Cross section of the tool.
  • the greater the ratio between thickness of the Cutting body and thickness of the surrounding the cutting body Area of the base body is between the recess and grooves remaining wall thickness of the base body preferably 0.1 to 0.8 times the width of the recess. It is therefore also the one in this area of the recess Reduction of the shear stress peaks serving compliance Basic body achieved.
  • Fig. 1 shows the machining end of a drilling and Chisel tool with base body 1 and cutting body 2.
  • the base body 1 has a receptacle for the cutting body 2 Recess 3 on. Between the recess 3 and the cutting body 2 is the solder seam 4.
  • the solder seam 4 along the length parallel to the main axis different thickness so that the thickness at the is greatest at both longitudinal ends.
  • the different The thickness of the solder seam 4 comes in the example shown that the side walls of the recess 3 are light are convexly curved.
  • Fig. 2 is a machining end of a drilling and Chisel tool can be seen that a body 5 with has a recess 7, wherein in the recess 7 Cutting body 6 is arranged. Between cutting body 6 and Recess 7 is a solder seam 8. The base body 5 is penetrated by holes 9, which the function of relief notches comes to.
  • a machining end of another drilling and chiseling tool 3 again shows a base body 10 and a cutting body 11 within a recess 12.
  • a solder seam 13 is between the cutting body 11 and the recess 12 arranged.
  • a recess 14 is provided in the recess 12, which penetrates the base body 10. Because of this recess 14 the solder seam 13 is interrupted at the bottom of the recess 12.
  • the machinable end of FIG. 4 of a The drilling and chiseling tool has a base body 15 Recess 17 and the cutting body 16 arranged therein. There is between the cutting body 16 and the recess 17 an emergency seam 18.
  • the base body 15 points in the area of the machining side End grooves 19 on which the base body 15 enforce and open towards the machining end are.
  • the between the recess 17 and the grooves 19th remaining wall thickness w is less than the width b of the Recess 17, ie the wall thickness w is 0.1 to 0.8 times the width b of the recess 17.

Landscapes

  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Drilling Tools (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Earth Drilling (AREA)
EP92810283A 1991-05-02 1992-04-16 Bohr- und Meisselwerkzeug mit Grundkörper und Schneidkörper Expired - Lifetime EP0516581B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4114271A DE4114271A1 (de) 1991-05-02 1991-05-02 Bohr- und meisselwerkzeug mit grundkoerper und schneidkoerper
DE4114271 1991-05-02

Publications (3)

Publication Number Publication Date
EP0516581A2 EP0516581A2 (de) 1992-12-02
EP0516581A3 EP0516581A3 (en) 1993-07-07
EP0516581B1 true EP0516581B1 (de) 1998-07-15

Family

ID=6430780

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92810283A Expired - Lifetime EP0516581B1 (de) 1991-05-02 1992-04-16 Bohr- und Meisselwerkzeug mit Grundkörper und Schneidkörper

Country Status (5)

Country Link
US (1) US5265989A (ja)
EP (1) EP0516581B1 (ja)
JP (1) JP3426614B2 (ja)
DE (2) DE4114271A1 (ja)
DK (1) DK0516581T3 (ja)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4442266A1 (de) * 1994-11-28 1996-05-30 Hilti Ag Werkzeug mit Trägerkörper und Schneidkörper
US5918105A (en) * 1994-12-12 1999-06-29 Black & Decker Inc. Cutting tools for drilling concrete, aggregate, masonry or the like materials
TW299385B (en) 1994-12-12 1997-03-01 Black & Decker Inc Cutting tools for drilling concrete, aggregate, masonry or the like materials
SE507542C2 (sv) * 1996-12-04 1998-06-22 Seco Tools Ab Fräsverktyg samt skärdel till verktyget
US6250404B1 (en) 1999-06-08 2001-06-26 The Charles Machine Works, Inc. Directional boring head
DE102013108233A1 (de) * 2013-07-31 2015-02-05 Drebo Werkzeugfabrik Gmbh Bohrer

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2101376A (en) * 1934-10-09 1937-12-07 Wallramit Handel Mij Nv Percussive boring tool
DE671959C (de) * 1937-08-25 1939-02-17 Meutsch Voigtlaender & Co Vorm Mit Hartmetallschneiden versehenes Werkzeug, insbesondere Gesteinsschlagbohrer
CH272188A (de) * 1948-01-14 1950-12-15 Sandvikens Jernverks Ab Stossbohrkrone mit mindestens zwei Hartmetallschneideinsätzen.
FR981182A (fr) * 1948-02-28 1951-05-23 Sandvikens Jernverks Ab Couronne de trépan pour forage à percussion
FR1006219A (fr) * 1947-12-05 1952-04-21 Taillant de mine à plaquette extra-dure
DE765003C (de) * 1941-10-19 1953-10-26 Hartmetallwerkzeugfabrik Meuts Werkzeug mit Hartmetallein- bzw. -auflagen
FR1414023A (fr) * 1964-09-03 1965-10-15 Forges & Ateliers Du Saut Du T Outil constitué par un support et des plaquettes rapportées maintenues élastiquement dans ledit support
DE2802119A1 (de) * 1977-01-20 1978-08-03 Boart Int Ltd Loeteinsatz und verfahren zu seiner anbringung
US4181187A (en) * 1977-03-03 1980-01-01 Sandvik Aktiebolag Rock drill bit with stress relief insert sockets

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA631619A (en) * 1961-11-28 B. Baker John Rock drill bit with inserts
US2614813A (en) * 1949-07-08 1952-10-21 Ingersoll Rand Co Rock drilling tool
US2628072A (en) * 1949-09-01 1953-02-10 Timken Roller Bearing Co Drill bit having groove with hard metal cutter insert brazed therein
FR1051105A (fr) * 1951-03-01 1954-01-13 Skf Svenska Kullagerfab Ab Perforatrice pour la roche avec pointe en métal dur
GB707021A (en) * 1951-03-01 1954-04-07 Skf Svenska Kullagerfab Ab Improvements relating to rock drills
US2784943A (en) * 1952-11-03 1957-03-12 Sandvikens Jernverks Ab Rock drill bit with cutting insert
CH357692A (fr) * 1959-10-13 1961-10-31 Dionisotti Joseph Outil de perforation de roches
DE3426977A1 (de) * 1984-07-21 1986-01-30 Hawera Probst Gmbh + Co, 7980 Ravensburg Gesteinsbohrer

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2101376A (en) * 1934-10-09 1937-12-07 Wallramit Handel Mij Nv Percussive boring tool
DE671959C (de) * 1937-08-25 1939-02-17 Meutsch Voigtlaender & Co Vorm Mit Hartmetallschneiden versehenes Werkzeug, insbesondere Gesteinsschlagbohrer
DE765003C (de) * 1941-10-19 1953-10-26 Hartmetallwerkzeugfabrik Meuts Werkzeug mit Hartmetallein- bzw. -auflagen
FR1006219A (fr) * 1947-12-05 1952-04-21 Taillant de mine à plaquette extra-dure
CH272188A (de) * 1948-01-14 1950-12-15 Sandvikens Jernverks Ab Stossbohrkrone mit mindestens zwei Hartmetallschneideinsätzen.
FR981182A (fr) * 1948-02-28 1951-05-23 Sandvikens Jernverks Ab Couronne de trépan pour forage à percussion
FR1414023A (fr) * 1964-09-03 1965-10-15 Forges & Ateliers Du Saut Du T Outil constitué par un support et des plaquettes rapportées maintenues élastiquement dans ledit support
DE2802119A1 (de) * 1977-01-20 1978-08-03 Boart Int Ltd Loeteinsatz und verfahren zu seiner anbringung
US4181187A (en) * 1977-03-03 1980-01-01 Sandvik Aktiebolag Rock drill bit with stress relief insert sockets

Also Published As

Publication number Publication date
DE59209416D1 (de) 1998-08-20
DK0516581T3 (da) 1999-04-19
JPH05124027A (ja) 1993-05-21
EP0516581A2 (de) 1992-12-02
DE4114271A1 (de) 1992-11-05
JP3426614B2 (ja) 2003-07-14
US5265989A (en) 1993-11-30
EP0516581A3 (en) 1993-07-07

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