CN103561894A - Rock drill - Google Patents
Rock drill Download PDFInfo
- Publication number
- CN103561894A CN103561894A CN201280024873.5A CN201280024873A CN103561894A CN 103561894 A CN103561894 A CN 103561894A CN 201280024873 A CN201280024873 A CN 201280024873A CN 103561894 A CN103561894 A CN 103561894A
- Authority
- CN
- China
- Prior art keywords
- drill bit
- rock drill
- cutting
- cutting edge
- aforementioned
- 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.)
- Granted
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Classifications
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- 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
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D77/00—Reaming tools
- B23D77/006—Reaming tools with means for lubricating or cooling
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2200/00—Details of cutting inserts
- B23B2200/20—Top or side views of the cutting edge
- B23B2200/204—Top or side views of the cutting edge with discontinuous cutting edge
-
- 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
- B23B2251/14—Configuration of the cutting part, i.e. the main cutting edges
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2251/00—Details of tools for drilling machines
- B23B2251/18—Configuration of the drill point
Abstract
There is proposed a rock drill having a rotation axis (10) about which a rotary movement can be carried out during drilling, having a cutting body (1) formed in the shape of a roof, which has at least two main cutting edges (2, 3) provided on its end side and a centring point (8), by way of which the rock drill can be positioned in relation to the axis of the drill hole to be drilled, wherein the main cutting edges are arranged on the flanks of the roof-shaped cutting body and extend radially from the circumference of the drill in the direction of the rotation axis. In order to be able to improve the drilling progress, the main cutting edges end at the foot of the centring point at a radial distance from the rotation axis.
Description
Technical field
The present invention relates to a kind of according to the rock drill bit as described in the preamble of claim 1.
Background technology
General rock drill bit prior art known commercial, it has cutting body, and perhaps described cutting body is constructed to blade or cutter head and has central tip.Described central tip time is the center of rock drill bit in boring, so it is about the virtual axis location of the boring that will bore.In addition, described central tip can accurately positioningly be extended in centre bore.
Summary of the invention
Task of the present invention is to propose a kind of rock drill bit, and it can realize boring progress faster.
The described task from the outset rock drill bit of described type is set out, and by having the feature of the characteristic of claim 1, solves.
The measure of enumerating by dependent claims obtains advantageous embodiment of the present invention and improvement project.
Correspondingly, rock drill bit according to the present invention is characterised in that, described main cutting edge with described rotation one radial spacing of distance end at described central tip root place.Rotatablely moving of described rock drill bit can be carried out around rotation.Described rock drill bit comprises a cutting body that is constructed to top shape, described cutting body comprises at least two main cutting edge and the central tip that are arranged on its end face side, and described rock drill bit can be located about the axis of the boring that will bore by described central tip.Here, described main cutting edge is arranged on the flank of cutting body of described top shape, and is configured in the direction of described rotation radially to be extended by the periphery of described drill bit.
In principle, described top has two flanks in the sense of the present invention, but also can have a plurality of, for example three.Described top flank can extend on the operative orientation with respect to rotation.By measure according to the present invention, described main cutting edge with respect to described rotation with a radial spacing end at the root place of described central tip, this has realized described main cutting edge and has almost interrupted in described central tip.This " interruption " by described cutting edge can reduce the resistance of rig in invading the material that will hole time.In addition, this can realize by each cutting edge and make respectively independently working region, and impact energy is transferred to by oneself in described working region respectively when catalase.The drilling cuttings that can also make to remove enters with other path that in conveying worm and therefore, blade, especially major cutting edge form with less blank in side direction part.
In contrast, commercial general rock drill bit has through type cutting edge, and described through type cutting edge for example also extends to described central tip top and do not interrupt.Because this commercial general rock drill bit does not carry out the classification of each working region, General Requirements bears higher intrusion resistance.
Described rock drill bit has certain direction of rotation, and when boring, described direction of rotation is arranged to described drill bit and can be invaded in the material that will hole accordingly.About cutting edge, there is the surface that is arranged in cutting edge cutting face in direction of rotation, i.e. so-called cutting face.Meanwhile, correspondingly, after the cutting edge of described end face side, about described direction of rotation, there is the scope of freedom that is arranged in there.Described drill bit is perhaps also constructed such that to exist the more than one scope of freedom in another embodiment, and wherein, the described scope of freedom is for example arranged in another angle of attack each other.
Also can imagine in principle described rock drill bit and not there is the single drilling head that is constructed to single type or cutting body, but the cutting body that is constructed to blade is installed in described drilling head.Described blade some time be also known as cutter head.In addition, correspondingly, described blade comprises again the cutting edge with cutting face and the scope of freedom.This especially tool have the following advantages: described blade or cutter head are made with respect to the remaining part of described drilling head also available another material, for example, with suitable carbide alloy, make.
In an improvement project of the present invention, described cutting face and/or the scope of freedom with described rotation one radial spacing of distance end at the root of described central tip.When described central tip has suitable width or suitable diameter, especially can there is this geometrical arrangements.If blade for example exists as inserts, described central tip extends beyond the gross thickness of described blade if desired.By correspondingly interrupting described cutting face or cutting face, its effect propety equally ad hoc adapts to described rock drill bit, for example, in order to remove drilling cuttings, change thus the described scope of freedom.
In one embodiment, described central tip also can be arranged on described rotation.This can make described bit central be positioned on described rotation and the boring that will bore on.
Also can imagine, each main cutting edge and/or cutting face and/or the scope of freedom are arranged on the not homonymy of described top flank, so that they are directly mutually not adjacent, preferably, described central tip preferred arrangements is between described top flank.This causes the directly contact hardly on different top flanks of described main cutting edge, cutting face or the scope of freedom.Preferably, the present invention proposes central tip and is arranged between them.Therefore, each operate portions section can be made in better mode, thus, can realize again better boring progress, and this is because the energy in each section can more preferably convert drilling action to.This is not only at two cutting edges, for example, when a blade, existence about central tip opposite the situation of arranging, also in setting example during as three cutting edges, about situation of arranging when end face side is observed starlikely, wherein, the in the situation that of three cutting edges, for example described cutting edge forms in the mode of the angle of 120 ° of next cutting edges of distance on each top flank.
In principle, can imagine the about taper of described central tip ground but not form sword and construct.This can make described central tip more freely in the boring as location, move in principle, there is no very large resistance.Yet in many purposes, wish that described central tip itself has central cutting sword.Therefore, described central tip is configured to again itself contribute to carry out boring progress, and its mode is that it wears out rock material equally.Especially, after this, described central tip can itself be worn out rock material thus near the peripheral region of rotation, forms to a certain extent the locating auxiliary structure that initiatively enters into the rock that will bore when the increasing boring that is about to carry out makes progress.
Particularly, when several drilling head, the described central tip with center sword is installed forward in end face side again with respect to top flank (it has main cutting edge).Thus, described central tip can strengthen about the effect of location, and this is because described central tip is cut in material on the one hand, on the other hand, with respect to all the other drilling the earth on first watch, invades in material, and can realize thus the fixed middle effect of reinforcement.
In improvement project of the present invention, so at least one main cutting edge and central cutting sword are arranged mutually non-contiguously.This means if the side at rotation moves upward along main cutting edge, not directly to arrive on described central cutting sword, but in the plane perpendicular to rotation, have deviation between the end of corresponding main cutting edge and the curve of central cutting sword trend.Especially, all main cutting edges can have corresponding deviation with respect to described central cutting cutlery.
In a particularly preferred embodiment, described central cutting sword further with the virtual extension of the subsegment of at least one main cutting edge at angle.This virtual extension correspondingly arrives being positioned on top flank or passing the straight line of central tip of main cutting edge.Therefore the virtual extension that, is positioned at the main cutting edge in central tip is automatic cutting then.The deviation that departs from rotation direction can keep with being left in the basket,, when the virtual extension of described main cutting edge and central cutting sword on the skew extend, only on the projection plane perpendicular to rotation, cuts.This measure not only can make corresponding working region be formed in the region of radially arranging with respect to rotation, and can when rotation or boring, come into operation successively equally.Therefore, described boring progress can be enhanced again.
Particularly preferably be, main cutting edge has the angle between 60 ° and 90 ° about the extension of central cutting sword or main cutting edge about central cutting cutlery, particularly the angle between 65 ° and 75 °.In described region, described angle is enough shown to identify this phase deviation greatly and is formed supporting.
In a preferred embodiment of the invention, described central tip has avette cross section in the plane perpendicular to rotation, preferably has oval-shaped cross section.Also can imagine in principle, described central tip has circular cross section, for example its taper while building.Avette cross section can be constructed on the one hand described central cutting sword certainly more longways, when it is positioned on the longer main shaft of described ellipse.If the longer longitudinal axis of described ellipse also with described main cutting edge at angle, for example become one 65 ° angle arrange or be orientated, described main cutting edge is limited in described oval-shaped side of dwindling, and therefore comparatively speaking, can construct more longways than the circular cross section with the diameter of described main shaft.So described central cutting sword and main cutting edge can be constructed more longways.The relative end of described main cutting edge can fit together.
In principle, described central tip or at least the active side end of central tip be first arranged on operative orientation.Yet, an improvement project of the present invention can be configured at least part of central cutting sword and on operative orientation, be arranged in after main cutting edge, particularly when described central cutting sword and main cutting edge are arranged at angle, described central cutting sword is deeper directed to respectively in their end segments, as a part for main cutting edge, arranges.This cause described central cutting sword also when boring exactly main cutting edge be initiatively cut in the region in material, additionally also make described central cutting sword on equal height, complete on one's own initiative a working angles.This can more preferably carry out on the one hand bore operation or more preferably boring progress and can carry out on the other hand accurately positioningly fixed in.
In several embodiment particularly advantageously, exactly when rock drilling is holed particularly advantageously, described blade and/or cutting body are made by carbide alloy, so it has about to cutting the enough hardness of effective material.But especially, blade or cutting body are also made by all-carbide.
Accompanying drawing explanation
Embodiments of the invention are shown in the drawings and illustrate in greater detail other advantages and details.
Shown in the drawings:
Fig. 1 illustrates for according to the schematic profiles figure of the blade of rock drill bit of the present invention with side view, and
Fig. 2 illustrates the schematic profiles figure of blade with top view.
The specific embodiment
Fig. 1 and Fig. 2 illustrate the blade 1 for rock drill bit, and it is installed in corresponding drilling head as inserts.Advantageously, this blade is made by carbide alloy.By carbide alloy, make and can be applicable to corresponding rock drill bit, when multiple conventional rock material, can provide especially effectively boring progress and especially effectively abrasion.
The scope of freedom 6,7 that also can be observed especially main cutting edge 2,3, cutting face separately 4,5 and arrange along direction of rotation D around rotation A.To the scope of freedom 6,7 Further Divisions respectively, the scope of freedom 6 is divided into scope of freedom 6' and 6 below " be divided into scope of freedom 7' and 7 with the scope of freedom 7 ", wherein, 6' is than 6 " become another angle, 7' is with respect to 7 equally " also become another angle.In addition, main cutting edge 2,3 shows independently as dashed region.When boring, drilling cuttings is discharged forward by cutting face 4,5 at least in part.At middle part, central tip 8 is arranged around rotation A.Central tip 8 also has a cutting edge, central cutting sword 9.This central cutting sword 9 clearly illustrates as Fig. 1, and with respect to main cutting edge, form about angle of 65 °, or rather, main cutting edge extends through the virtual extension of central tip.Main cutting edge 2,3 ends at respectively the root of central tip 8.Blade 1 rotates around rotation 10 when boring.
Embodiments of the invention modification can provide good especially boring progress.
Claims (13)
1. rock drill bit, it has rotation (10), described rock drill bit can be carried out and rotatablely move around described rotation (10) when boring, described rock drill bit has the cutting body (1) of top shape, described cutting body (1) has at least two main cutting edges (2 in the end side that is arranged on it, 3) and central tip (8), described rock drill bit can be by described central tip (8) axis location with respect to the boring that will get out, wherein, described main cutting edge (2, 3) be arranged on the flank of cutting body of described top shape and radially extend on described rotation (10) direction from the periphery of described drill bit, it is characterized in that, described main cutting edge (2, 3) in the mode that there is a radial spacing with described rotation, end at the root of described central tip (8).
2. rock drill bit according to claim 1, is characterized in that, exist a cutting face (4,5) and one in the direction of rotation of rock drill bit, be arranged in the scope of freedom after end side cutting edge (6,6', 6 "; 7,7 ', 7 ").
3. according to the rock drill bit described in aforementioned any one claim, it is characterized in that, described cutting body is configured to blade (1), wherein, described in described blade comprises again, have cutting face (4,5) and the scope of freedom (6,6', 6 "; 7,7 ', 7 " cutting edge).
4. according to the rock drill bit described in aforementioned any one claim, it is characterized in that, described cutting face (4,5) and/or the scope of freedom (6,6', 6 "; 7,7 ', 7 ") in the mode that there is a radial spacing with described rotation, end at the root of described central tip.
5. according to the rock drill bit described in aforementioned any one claim, it is characterized in that, described central tip (8) is arranged on described rotation (10).
6. according to the rock drill bit described in aforementioned any one claim, it is characterized in that, each main cutting edge and/or cutting face and/or the scope of freedom are arranged on the not homonymy of described top flank so that they are directly mutually not adjacent, and preferably, described central tip is arranged between them.
7. according to the rock drill bit described in aforementioned any one claim, it is characterized in that, described central tip (8) has central cutting sword (9).
8. according to the rock drill bit described in aforementioned any one claim, it is characterized in that, at least one in described main cutting edge and central cutting sword are arranged mutually non-contiguously.
9. according to the rock drill bit described in aforementioned any one claim, it is characterized in that, the virtual extension of at least one in the subsegment of described central cutting sword and described main cutting edge at angle.
10. according to the rock drill bit described in aforementioned any one claim, it is characterized in that, the angle between the virtual extension of at least one in described central cutting sword and main cutting edge is 60 ° to 90 °, 65 ° to 75 ° especially.
11. according to the rock drill bit described in aforementioned any one claim, it is characterized in that, described central tip has avette in the plane perpendicular to described rotation, preferred oval-shaped cross section.
12. according to the rock drill bit described in aforementioned any one claim, it is characterized in that, described central cutting sword is arranged in after described main cutting edge at least in part on useful direction.
13. according to the rock drill bit described in aforementioned any one claim, it is characterized in that, described blade and/or cutting body are by carbide alloy, and particularly all-carbide forms.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102011076365A DE102011076365A1 (en) | 2011-05-24 | 2011-05-24 | rock drill |
| DE102011076365.1 | 2011-05-24 | ||
| PCT/EP2012/057279 WO2012159831A1 (en) | 2011-05-24 | 2012-04-20 | Rock drill |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103561894A true CN103561894A (en) | 2014-02-05 |
| CN103561894B CN103561894B (en) | 2017-10-17 |
Family
ID=46001246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201280024873.5A Active CN103561894B (en) | 2011-05-24 | 2012-04-20 | Rock drill bit |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN103561894B (en) |
| DE (1) | DE102011076365A1 (en) |
| WO (1) | WO2012159831A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114929445A (en) * | 2019-11-04 | 2022-08-19 | 科尔特技术有限责任公司 | Cylinder head drilling tool, in particular a Fosbury drill bit |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117381029A (en) * | 2022-07-05 | 2024-01-12 | 博世电动工具（中国）有限公司 | Drill bit blade and drill bit |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5287937A (en) * | 1992-06-30 | 1994-02-22 | The Sollami Company | Drill bits and the blades therefor |
| CN1159383A (en) * | 1995-12-07 | 1997-09-17 | 希尔蒂股份公司 | Rotary impact type twist drill |
| CN1604829A (en) * | 2001-12-17 | 2005-04-06 | 赛拉蒂齐特股份有限公司 | Percussion or hammer drill |
| US20060118341A1 (en) * | 2002-08-06 | 2006-06-08 | Ceratizit Austria Gesellschaft M. B. H. | Drill in particular masonry drill |
| CN101748973A (en) * | 2008-12-18 | 2010-06-23 | 喜利得股份公司 | Drill head for hammer drill |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE50304839D1 (en) * | 2002-12-19 | 2006-10-12 | Bosch Gmbh Robert | rock drill |
-
2011
- 2011-05-24 DE DE102011076365A patent/DE102011076365A1/en active Pending
-
2012
- 2012-04-20 WO PCT/EP2012/057279 patent/WO2012159831A1/en active Application Filing
- 2012-04-20 CN CN201280024873.5A patent/CN103561894B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5287937A (en) * | 1992-06-30 | 1994-02-22 | The Sollami Company | Drill bits and the blades therefor |
| CN1159383A (en) * | 1995-12-07 | 1997-09-17 | 希尔蒂股份公司 | Rotary impact type twist drill |
| CN1604829A (en) * | 2001-12-17 | 2005-04-06 | 赛拉蒂齐特股份有限公司 | Percussion or hammer drill |
| US20060118341A1 (en) * | 2002-08-06 | 2006-06-08 | Ceratizit Austria Gesellschaft M. B. H. | Drill in particular masonry drill |
| CN101748973A (en) * | 2008-12-18 | 2010-06-23 | 喜利得股份公司 | Drill head for hammer drill |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114929445A (en) * | 2019-11-04 | 2022-08-19 | 科尔特技术有限责任公司 | Cylinder head drilling tool, in particular a Fosbury drill bit |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2012159831A1 (en) | 2012-11-29 |
| DE102011076365A1 (en) | 2012-11-29 |
| CN103561894B (en) | 2017-10-17 |
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