EP0516581B1 - Outil de forage et de burinage avec corps de base et élément de coupe - Google Patents
Outil de forage et de burinage avec corps de base et élément de coupe Download PDFInfo
- 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
Links
- 238000005520 cutting process Methods 0.000 title claims description 21
- 238000005553 drilling Methods 0.000 title claims description 11
- 229910000679 solder Inorganic materials 0.000 claims description 24
- 238000003754 machining Methods 0.000 claims description 17
- 239000002184 metal Substances 0.000 claims description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 230000035882 stress Effects 0.000 description 12
- 239000000463 material Substances 0.000 description 4
- 239000011435 rock Substances 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000763 evoking effect Effects 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
Images
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)
- Earth Drilling (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
- Drilling Tools (AREA)
Claims (6)
- Outil de forage et de burinage comprenant un corps de base (1, 5, 10, 15) en acier qui comporte un évidement (3, 7, 12, 17) qui est ouvert en direction de l'extrémité de travail de l'outil et qui comporte des parois latérales qui s'étendent pour l'essentiel dans la direction axiale et traversent une section formée perpendiculairement à l'axe principal du corps de base, et comprenant un corps de coupe (2, 6, 11, 16) en métal dur qui est fixé dans l'évidement (3, 7, 12, 17) du corps de base (1, 5, 10, 15) à l'aide d'une brasure (4, 8, 13, 18) dont l'épaisseur varie sur la longueur s'étendant parallèlement à l'axe principal, caractérisé en ce que, dans la zone des extrémités longitudinales des parois latérales de l'évidement (7, 12, 17), il est prévu pour le corps de coupe (6, 11, 16), dans le corps de base (5, 10, 15), des cavités supplémentaires (9, 14, 19) qui s'étendent perpendiculairement à l'axe principal et parallèlement aux parois latérales et qui sont dépourvues de brasure.
- Outil selon la revendication 1, caractérisé en ce que, sur la longueur s'étendant parallèlement à l'axe principal, l'épaisseur de la brasure (4) augmente en direction des deux extrémités longitudinales.
- Outil selon la revendication 1 ou 2, caractérisé en ce que les cavités sont des trous (9) qui traversent le corps de base (5) dans la zone de l'extrémité longitudinale des parois latérales située à l'opposé de l'extrémité de travail.
- Outil selon la revendication 1 ou 2, caractérisé en ce que les cavités (14) sont contiguës à l'extrémité longitudinale de l'évidement (12) située à l'opposé de l'extrémité de travail et traversent le corps de base (10).
- Outil selon la revendication 1 ou 2, caractérisé en ce que les cavités sont des rainures ouvertes (19) qui traversent le corps de base (15) dans la zone de l'extrémité de travail.
- Outil selon la revendication 5, caractérisé en ce que l'épaisseur de paroi (w) du corps de base (15) subsistant entre l'évidement (17) et les rainures (19) est égale à 0,1 à 0,8 fois la largeur (b) de l'évidement (17).
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 (fr) | 1992-12-02 |
EP0516581A3 EP0516581A3 (en) | 1993-07-07 |
EP0516581B1 true EP0516581B1 (fr) | 1998-07-15 |
Family
ID=6430780
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP92810283A Expired - Lifetime EP0516581B1 (fr) | 1991-05-02 | 1992-04-16 | Outil de forage et de burinage avec corps de base et élément de coupe |
Country Status (5)
Country | Link |
---|---|
US (1) | US5265989A (fr) |
EP (1) | EP0516581B1 (fr) |
JP (1) | JP3426614B2 (fr) |
DE (2) | DE4114271A1 (fr) |
DK (1) | DK0516581T3 (fr) |
Families Citing this family (6)
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)
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)
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 |
GB707021A (en) * | 1951-03-01 | 1954-04-07 | Skf Svenska Kullagerfab Ab | Improvements relating to rock drills |
FR1051105A (fr) * | 1951-03-01 | 1954-01-13 | Skf Svenska Kullagerfab Ab | Perforatrice pour la roche avec pointe en métal dur |
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 |
-
1991
- 1991-05-02 DE DE4114271A patent/DE4114271A1/de not_active Withdrawn
-
1992
- 1992-04-16 DK DK92810283T patent/DK0516581T3/da active
- 1992-04-16 DE DE59209416T patent/DE59209416D1/de not_active Expired - Fee Related
- 1992-04-16 EP EP92810283A patent/EP0516581B1/fr not_active Expired - Lifetime
- 1992-04-28 US US07/875,065 patent/US5265989A/en not_active Expired - Fee Related
- 1992-05-01 JP JP11283492A patent/JP3426614B2/ja not_active Expired - Fee Related
Patent Citations (9)
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 |
---|---|
US5265989A (en) | 1993-11-30 |
EP0516581A3 (en) | 1993-07-07 |
DK0516581T3 (da) | 1999-04-19 |
JPH05124027A (ja) | 1993-05-21 |
EP0516581A2 (fr) | 1992-12-02 |
JP3426614B2 (ja) | 2003-07-14 |
DE59209416D1 (de) | 1998-08-20 |
DE4114271A1 (de) | 1992-11-05 |
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