US20100155144A1 - Drilling tool for rock - Google Patents
Drilling tool for rock Download PDFInfo
- Publication number
- US20100155144A1 US20100155144A1 US12/640,580 US64058009A US2010155144A1 US 20100155144 A1 US20100155144 A1 US 20100155144A1 US 64058009 A US64058009 A US 64058009A US 2010155144 A1 US2010155144 A1 US 2010155144A1
- Authority
- US
- United States
- Prior art keywords
- rotary lock
- lock
- drilling tool
- slot
- drill head
- 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.)
- Abandoned
Links
- 238000005553 drilling Methods 0.000 title claims abstract description 27
- 239000011435 rock Substances 0.000 title claims abstract description 6
- 230000008878 coupling Effects 0.000 abstract description 7
- 238000010168 coupling process Methods 0.000 abstract description 7
- 238000005859 coupling reaction Methods 0.000 abstract description 7
- 238000011010 flushing procedure Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001141 propulsive effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B51/00—Tools for drilling machines
-
- 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
- B28D1/14—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by boring or drilling
- B28D1/146—Tools therefor
-
- 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
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/18—Connecting or disconnecting drill bit and drilling pipe
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2226/00—Materials of tools or workpieces not comprising a metal
- B23B2226/75—Stone, rock or concrete
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2251/00—Details of tools for drilling machines
- B23B2251/02—Connections between shanks and removable cutting heads
Definitions
- the present invention relates to a drilling tool for rock.
- Drilling tools for rock feature an at least partially hollow drill rod having a flushing channel, a drive-side shank for accommodation in the tool receptacle of a propulsive drilling tool device and an output-side coupling means as well as a drill head having flushing openings and cutting edges made of hard material, which drill head is connected to this in a rotationally secured manner and detachably by means of a catch means.
- a drilling tool for rock having an at least partially rotating and percussively loaded drill rod and having a drill head studded with hard material is known from European Patent Document No. EP 1 267 033 A1.
- the drill rod and the drill head are detachably connected to one another via a coupling means such that they are, to a limited extent, axially mobile with rotary form-locking, and also connected to each other via a catch means, wherein at least one radially projecting rotary lock-in bar is attached on a front end of the drill rod.
- the rotary lock-in bar in this case engages in at least one rotary lock-in slot of a rotary lock-in surface of a cup-shaped drill head, which slot runs along the tool axis.
- the object of the present invention is further improving the known drilling tool and in particular simplifying the assembly and disassembly of the drill head on the drill rod.
- a coupling mechanism has an elastic lock for holding the rotary lock-in bar in the rotary lock-in slot.
- the elastic lock is advantageously arranged on the drill rod, whereby additional costs from manufacturing the drill heads are avoided and any additional costs that are incurred for the drill rod have only a negligible impact on the total cost, due to the longer service life of the drill rod.
- the elastic lock may also be arranged on the drill head, thereby reducing the noise radiation of the drilling tool. This variant is particularly advantageous for manufacturing in the case of smaller drill diameters.
- the elastic lock is a spring element arranged on the rotary lock-in bar, which can be moved spring-elastically in a circumferential direction of the drill rod.
- the elastic lock is a spring element arranged on the drill head, which can be moved spring-elastically in a circumferential direction of the drill head.
- the elastic lock includes at least one elastic wall section of the drill head.
- the width of the rotary lock-in slot in the region of the opening is smaller than the greatest width of the rotary lock-in bar.
- a constricting of the rotary lock-in slot is advantageously achieved in that a projection narrowing the opening is arranged on the wall section in the region of the axial opening of the rotary lock-in slot.
- a further slot is arranged in the wall section in a region lying in a working rotational direction behind the projection.
- the elastic widening of the opening or the constricted location is hereby facilitated when inserting and extracting the rotary lock-in bar from the rotary lock-in slot.
- the rotary lock-in slot advantageously has at least one beveling in the region of its opening, wherein the widening of the opening or the narrow point of the rotary lock-in slot by the rotary lock-in bar is facilitated.
- FIGS. 1A to 1C are side views of the drilling tool according to the invention in three different stages of assembly
- FIGS. 2A to 2C are side views of another drilling tool in three different stages of assembly.
- FIG. 3 is a side view of another drilling tool where the drill head is not yet mounted on the drill rod.
- FIGS. 1A to 1C depict a first drilling tool 10 according to the invention, which extends along a tool axis A.
- This drilling tool 10 has a drill head 21 , which bears a cutting body 29 made of hard metal, and an elongated drill rod 11 .
- the drill head 21 and the drill rod 11 are connected via a coupling mechanism, which has four rotary lock-in slots 22 on the drill head 21 miming along the tool axis A and four rotary lock-in bars 12 arranged on a front end of the drill rod 11 .
- Running lengthwise with or along a tool axis in this case also means a progression of the rotary lock-in slots 22 that is inclined at an angle of up to 25° from the tool axis A.
- the rotary lock-in bars 12 can each be inserted via axial openings 28 of the rotary lock-in slots 22 into the associated rotary lock-in slots 22 in order to arrange the drill head 21 detachably but rotationally secured on the drill rod 11 .
- the openings 28 each have a beveling 27 as an insertion facilitator for the rotary lock-in bars 12 on at least one side of the openings 28 .
- the rotary lock-in bars 12 are preferably conically tapered on their ends facing the drill head 21 in order to facilitate insertion into the rotary lock-in slots.
- a locking nose 30 projects respectively into the rotary lock-in slots 22 on the ends of the rotary lock-in slots 22 lying in the working rotational direction R and according to a type of bayonet lock prevents the disengaging of the rotary lock-in bars 12 during drilling operation.
- a spring element 13 embodied as a spring bridge, which acts as an elastic lock and via which the drill head. 21 , if it is attached to the drill rod 11 as FIG. 1C shows, is acted upon elastically against the working rotational direction R.
- the rotary lock-in bars 12 are thereby held in the regions of the rotary lock-in slots 22 that are partially axially closed via the locking nose 30 .
- the spring element 13 in this case can move at least to a limited extent spring-elastically in a circumferential direction of the drill rod 11 .
- the drill head 21 is held securely and captively on the drill rod 11 via the coupling mechanism in combination with the elastic lock.
- the drilling tool 10 depicted in FIGS. 2A to 2C differs from the drilling tool depicted in FIGS. 1A to 1C in that, in this case, instead of the spring element 13 on the rotary lock-in bar 12 , a spring element 23 embodied as a spring tongue is arranged as an elastic lock in at least one of the rotary lock-in slots 22 , which spring element can be moved spring-elastically in a circumferential direction of the drill head 21 .
- the function of the spring element 23 corresponds in this case to what was described in the foregoing with respect to FIGS. 1A to 1C , which is why in this regard and because of reference numbers not mentioned here, reference is made fully to the description of FIGS. 1A to 1C .
- the drilling tool 10 depicted in FIG. 3 differs from the drilling tool depicted in FIGS. 1A to 1C in that, instead of the spring element 13 on the rotary lock-in bar 12 , the elastic lock in this case includes at least one elastic wall section 24 of the drill head 21 and at least one projection 25 projecting from the wall section 24 and narrowing the rotary lock-in slot 22 in the region of its axial opening 28 . Moreover, a further slot 26 is arranged next to the wall section 24 in a region lying in a working rotational direction R behind the projection 25 , which slot increases the elastic flexibility of the wall section 24 .
- the projection 25 in this case has the beveling 27 in the design as a curved outer contour, which facilitates the widening of the opening 28 of the rotary lock-in slot 22 by the rotary lock-in bar 12 .
- the function of the elastic wall section 24 corresponds in this case to the function of the spring elements 13 , 23 described in the foregoing with respect to FIGS. 1A to 2C , which is why in this regard and because of reference numbers not mentioned here, reference is made fully to the description of FIGS. 1A to 2C .
Abstract
A drilling tool for rock is disclosed. The tool has a drill rod and a cup-shaped drill head, where the drill head and the drill rod can be connected detachably but rotationally secured with each other via a coupling mechanism which has at least one rotary lock-in slot of the drill head running along a tool axis and at least one rotary lock-in bar that can be inserted into the rotary lock-in slot and that is arranged on the end of the drill rod. The coupling mechanism in this case has an elastic lock for holding the rotary lock-in bar in the rotary lock-in slot.
Description
- This application claims the priority of German Patent Document No. 10 2008 054 925.8-24, filed Dec. 18, 2008, the disclosure of which is expressly incorporated by reference herein.
- The present invention relates to a drilling tool for rock.
- Drilling tools for rock feature an at least partially hollow drill rod having a flushing channel, a drive-side shank for accommodation in the tool receptacle of a propulsive drilling tool device and an output-side coupling means as well as a drill head having flushing openings and cutting edges made of hard material, which drill head is connected to this in a rotationally secured manner and detachably by means of a catch means.
- A drilling tool for rock having an at least partially rotating and percussively loaded drill rod and having a drill head studded with hard material is known from European Patent Document No. EP 1 267 033 A1. The drill rod and the drill head are detachably connected to one another via a coupling means such that they are, to a limited extent, axially mobile with rotary form-locking, and also connected to each other via a catch means, wherein at least one radially projecting rotary lock-in bar is attached on a front end of the drill rod. The rotary lock-in bar in this case engages in at least one rotary lock-in slot of a rotary lock-in surface of a cup-shaped drill head, which slot runs along the tool axis.
- The object of the present invention is further improving the known drilling tool and in particular simplifying the assembly and disassembly of the drill head on the drill rod.
- According to this, a coupling mechanism has an elastic lock for holding the rotary lock-in bar in the rotary lock-in slot. A reliable connection of the drill head and the drill rod is hereby achieved in a technically simple manner, in particular the drill head and drill rod may be separated again by hand without implements. In addition, the attainment according to the invention can be manufactured very cost-effectively.
- The elastic lock is advantageously arranged on the drill rod, whereby additional costs from manufacturing the drill heads are avoided and any additional costs that are incurred for the drill rod have only a negligible impact on the total cost, due to the longer service life of the drill rod.
- Alternatively, the elastic lock may also be arranged on the drill head, thereby reducing the noise radiation of the drilling tool. This variant is particularly advantageous for manufacturing in the case of smaller drill diameters.
- In a structurally simple attainment, the elastic lock is a spring element arranged on the rotary lock-in bar, which can be moved spring-elastically in a circumferential direction of the drill rod.
- In a further structurally simple attainment, the elastic lock is a spring element arranged on the drill head, which can be moved spring-elastically in a circumferential direction of the drill head.
- In an attainment that can be realized in an especially cost-effective manner, the elastic lock includes at least one elastic wall section of the drill head. At the same time, the width of the rotary lock-in slot in the region of the opening is smaller than the greatest width of the rotary lock-in bar. The elastic deformability of the drill head or its circumferential wall is utilized hereby in an advantageous manner.
- A constricting of the rotary lock-in slot is advantageously achieved in that a projection narrowing the opening is arranged on the wall section in the region of the axial opening of the rotary lock-in slot.
- In the process, it can be beneficial if a further slot is arranged in the wall section in a region lying in a working rotational direction behind the projection. The elastic widening of the opening or the constricted location is hereby facilitated when inserting and extracting the rotary lock-in bar from the rotary lock-in slot.
- The rotary lock-in slot advantageously has at least one beveling in the region of its opening, wherein the widening of the opening or the narrow point of the rotary lock-in slot by the rotary lock-in bar is facilitated.
- The invention is depicted in the drawings in an exemplary embodiment.
-
FIGS. 1A to 1C are side views of the drilling tool according to the invention in three different stages of assembly; -
FIGS. 2A to 2C are side views of another drilling tool in three different stages of assembly; and -
FIG. 3 is a side view of another drilling tool where the drill head is not yet mounted on the drill rod. -
FIGS. 1A to 1C depict afirst drilling tool 10 according to the invention, which extends along a tool axis A. Thisdrilling tool 10 has adrill head 21, which bears acutting body 29 made of hard metal, and anelongated drill rod 11. Thedrill head 21 and thedrill rod 11 are connected via a coupling mechanism, which has four rotary lock-inslots 22 on thedrill head 21 miming along the tool axis A and four rotary lock-inbars 12 arranged on a front end of thedrill rod 11. Running lengthwise with or along a tool axis in this case also means a progression of the rotary lock-inslots 22 that is inclined at an angle of up to 25° from the tool axis A. The rotary lock-inbars 12 can each be inserted viaaxial openings 28 of the rotary lock-inslots 22 into the associated rotary lock-inslots 22 in order to arrange thedrill head 21 detachably but rotationally secured on thedrill rod 11. Theopenings 28 each have abeveling 27 as an insertion facilitator for the rotary lock-inbars 12 on at least one side of theopenings 28. The rotary lock-inbars 12 are preferably conically tapered on their ends facing thedrill head 21 in order to facilitate insertion into the rotary lock-in slots. In the region of theopenings 28, alocking nose 30 projects respectively into the rotary lock-inslots 22 on the ends of the rotary lock-inslots 22 lying in the working rotational direction R and according to a type of bayonet lock prevents the disengaging of the rotary lock-inbars 12 during drilling operation. - Arranged on at least one of the rotary lock-in
bars 21, on the side that is opposite from the working rotational direction R, is aspring element 13 embodied as a spring bridge, which acts as an elastic lock and via which the drill head. 21, if it is attached to thedrill rod 11 asFIG. 1C shows, is acted upon elastically against the working rotational direction R. The rotary lock-inbars 12 are thereby held in the regions of the rotary lock-inslots 22 that are partially axially closed via thelocking nose 30. Thespring element 13 in this case can move at least to a limited extent spring-elastically in a circumferential direction of thedrill rod 11. Thedrill head 21 is held securely and captively on thedrill rod 11 via the coupling mechanism in combination with the elastic lock. - The
drilling tool 10 depicted inFIGS. 2A to 2C differs from the drilling tool depicted inFIGS. 1A to 1C in that, in this case, instead of thespring element 13 on the rotary lock-inbar 12, aspring element 23 embodied as a spring tongue is arranged as an elastic lock in at least one of the rotary lock-inslots 22, which spring element can be moved spring-elastically in a circumferential direction of thedrill head 21. The function of thespring element 23 corresponds in this case to what was described in the foregoing with respect toFIGS. 1A to 1C , which is why in this regard and because of reference numbers not mentioned here, reference is made fully to the description ofFIGS. 1A to 1C . - The
drilling tool 10 depicted inFIG. 3 differs from the drilling tool depicted inFIGS. 1A to 1C in that, instead of thespring element 13 on the rotary lock-inbar 12, the elastic lock in this case includes at least oneelastic wall section 24 of thedrill head 21 and at least oneprojection 25 projecting from thewall section 24 and narrowing the rotary lock-inslot 22 in the region of itsaxial opening 28. Moreover, afurther slot 26 is arranged next to thewall section 24 in a region lying in a working rotational direction R behind theprojection 25, which slot increases the elastic flexibility of thewall section 24. Theprojection 25 in this case has thebeveling 27 in the design as a curved outer contour, which facilitates the widening of the opening 28 of the rotary lock-inslot 22 by the rotary lock-inbar 12. - The function of the
elastic wall section 24 corresponds in this case to the function of thespring elements FIGS. 1A to 2C , which is why in this regard and because of reference numbers not mentioned here, reference is made fully to the description ofFIGS. 1A to 2C . - The foregoing disclosure has been set forth merely to illustrate the invention and is not intended to be limiting. Since modifications of the disclosed embodiments incorporating the spirit and substance of the invention may occur to persons skilled in the art, the invention should be construed to include everything within the scope of the appended claims and equivalents thereof.
Claims (9)
1. A drilling tool for rock, comprising:
a drill rod; and
a cup-shaped drill head;
wherein the drill rod and the drill head are detachably connectable and rotationally securable with respect to each other via a rotary lock-in slot of the drill head running along a tool axis and a rotary lock-in bar arranged on an end of the drill rod that is insertable into the rotary lock-in slot, and wherein an elastic lock holds the rotary lock-in bar in the rotary lock-in slot.
2. The drilling tool according to claim 1 , wherein the elastic lock is arranged on the drill rod.
3. The drilling tool according to claim 1 , wherein the elastic lock is arranged on the drill head.
4. The drilling tool according to claim 1 , wherein the elastic lock is a spring element arranged on the rotary lock-in bar which is moveable spring-elastically in a circumferential direction of the drill rod.
5. The drilling tool according to claim 1 , wherein the elastic lock is a spring element arranged on the drill head which is moveable spring-elastically in a circumferential direction of the drill head.
6. The drilling tool according to claim 1 , wherein the elastic lock includes an elastic wall section of the drill head and wherein a width of the rotary lock-in slot in a region of an axial opening is smaller than a greatest width of the rotary lock-in bar.
7. The drilling tool according to claim 6 , wherein a projection which narrows the opening is arranged on the elastic wall section in the region of the axial opening.
8. The drilling tool according to claim 7 , wherein a slot is arranged in the elastic wall section in a region lying, in a working rotational direction, behind the projection.
9. The drilling tool according to claim 1 , wherein the rotary lock-in slot has a beveling in a region of an opening.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008054925.8 | 2008-12-18 | ||
DE102008054925A DE102008054925B4 (en) | 2008-12-18 | 2008-12-18 | Drilling tool for rock |
Publications (1)
Publication Number | Publication Date |
---|---|
US20100155144A1 true US20100155144A1 (en) | 2010-06-24 |
Family
ID=42027888
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/640,580 Abandoned US20100155144A1 (en) | 2008-12-18 | 2009-12-17 | Drilling tool for rock |
Country Status (5)
Country | Link |
---|---|
US (1) | US20100155144A1 (en) |
EP (1) | EP2199532A3 (en) |
JP (1) | JP2010142946A (en) |
CN (1) | CN101745988A (en) |
DE (1) | DE102008054925B4 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013150516A1 (en) | 2012-04-04 | 2013-10-10 | Iscar Ltd. | Cutting tool and cutting head with a resilient coupling portion |
WO2014080395A1 (en) | 2012-11-26 | 2014-05-30 | Iscar Ltd. | Cutting tool and cutting insert with a rearward resilience slit |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5983084B2 (en) * | 2012-06-24 | 2016-08-31 | 日立工機株式会社 | Nailer |
CN106555554B (en) * | 2016-11-24 | 2018-07-03 | 宜昌市燕狮科技开发有限责任公司 | A kind of bolt-type drill pipe connecting sleeve with wind spring |
CN111894565B (en) * | 2020-07-14 | 2024-03-22 | 中煤科工开采研究院有限公司 | Device for testing crack expansion in surrounding rock |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US611305A (en) * | 1898-09-27 | Pipe-lock | ||
US1526565A (en) * | 1923-06-16 | 1925-02-17 | William C Siderfin | Mining bit |
US3575446A (en) * | 1969-02-28 | 1971-04-20 | Don W Brantley | Quick-connect coupler |
US5397196A (en) * | 1992-07-24 | 1995-03-14 | Framatome Connectors International | Connector system |
US5741084A (en) * | 1995-03-27 | 1998-04-21 | Del Rio; Eddy H. | Wear compensating axial connection |
US5868533A (en) * | 1994-08-01 | 1999-02-09 | Fiala; Stanislav | Finishing tool for precision machining of holes |
WO1999019598A1 (en) * | 1997-10-15 | 1999-04-22 | 'diamant Boart', Societe Anonyme | Coupling for force-transmitting device |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB690531A (en) * | 1950-06-28 | 1953-04-22 | Sandvikens Jernverks Ab | Drill rod assembly for rock drilling operations |
DE3533929A1 (en) * | 1985-05-07 | 1986-11-13 | Geißler & Kuper GmbH Diamantwerkzeug - Wiederaufbereitung, 3100 Celle | Diamond bit with shank tube and threaded tube connection |
GB2324486B (en) * | 1997-04-24 | 2001-06-20 | Marcrist Ind Ltd | Masonry core-cutting tool |
DE10129064A1 (en) | 2001-06-15 | 2002-12-19 | Hilti Ag | rock drilling |
DE20119532U1 (en) * | 2001-12-01 | 2002-02-28 | Englert Thomas | clutch |
-
2008
- 2008-12-18 DE DE102008054925A patent/DE102008054925B4/en not_active Expired - Fee Related
-
2009
- 2009-11-23 EP EP09176741.8A patent/EP2199532A3/en not_active Withdrawn
- 2009-12-15 JP JP2009284388A patent/JP2010142946A/en active Pending
- 2009-12-17 US US12/640,580 patent/US20100155144A1/en not_active Abandoned
- 2009-12-17 CN CN200910253749A patent/CN101745988A/en active Pending
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US611305A (en) * | 1898-09-27 | Pipe-lock | ||
US1526565A (en) * | 1923-06-16 | 1925-02-17 | William C Siderfin | Mining bit |
US3575446A (en) * | 1969-02-28 | 1971-04-20 | Don W Brantley | Quick-connect coupler |
US5397196A (en) * | 1992-07-24 | 1995-03-14 | Framatome Connectors International | Connector system |
US5868533A (en) * | 1994-08-01 | 1999-02-09 | Fiala; Stanislav | Finishing tool for precision machining of holes |
US5741084A (en) * | 1995-03-27 | 1998-04-21 | Del Rio; Eddy H. | Wear compensating axial connection |
WO1999019598A1 (en) * | 1997-10-15 | 1999-04-22 | 'diamant Boart', Societe Anonyme | Coupling for force-transmitting device |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013150516A1 (en) | 2012-04-04 | 2013-10-10 | Iscar Ltd. | Cutting tool and cutting head with a resilient coupling portion |
US9028180B2 (en) | 2012-04-04 | 2015-05-12 | Iscar, Ltd. | Cutting tool and cutting head with a resilient coupling portion |
WO2014080395A1 (en) | 2012-11-26 | 2014-05-30 | Iscar Ltd. | Cutting tool and cutting insert with a rearward resilience slit |
US8882413B2 (en) | 2012-11-26 | 2014-11-11 | Iscar, Ltd. | Cutting tool and cutting insert with a rearward resilience slit |
Also Published As
Publication number | Publication date |
---|---|
EP2199532A2 (en) | 2010-06-23 |
JP2010142946A (en) | 2010-07-01 |
DE102008054925A1 (en) | 2010-07-01 |
CN101745988A (en) | 2010-06-23 |
EP2199532A3 (en) | 2016-03-09 |
DE102008054925B4 (en) | 2010-09-09 |
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Legal Events
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AS | Assignment |
Owner name: HILTI AKTIENGESELLSCHAFT,LIECHTENSTEIN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:CRAMER, TILL;KLEINE, WERNER;SIGNING DATES FROM 20091210 TO 20091214;REEL/FRAME:023670/0190 |
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STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |