CA2886925A1 - Cutting ring for a cutting roller for quarrying and cutting roller for quarrying - Google Patents
Cutting ring for a cutting roller for quarrying and cutting roller for quarrying Download PDFInfo
- Publication number
- CA2886925A1 CA2886925A1 CA2886925A CA2886925A CA2886925A1 CA 2886925 A1 CA2886925 A1 CA 2886925A1 CA 2886925 A CA2886925 A CA 2886925A CA 2886925 A CA2886925 A CA 2886925A CA 2886925 A1 CA2886925 A1 CA 2886925A1
- Authority
- CA
- Canada
- Prior art keywords
- cutting
- ring
- quarrying
- roller
- cutting ring
- 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
- 229910000679 solder Inorganic materials 0.000 claims description 2
- 238000007789 sealing Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000969 carrier Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C25/00—Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam
- E21C25/16—Machines slitting solely by one or more rotating saws, cutting discs, or wheels
- E21C25/18—Saws; Discs; Wheels
-
- 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
- E21B10/08—Roller bits
- E21B10/12—Roller bits with discs cutters
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Earth Drilling (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
- Turning (AREA)
Abstract
The invention relates to a cutting ring (21) for quarrying, comprising a number of cutting inserts (26) which are arranged in the cutting insert grooves (28) which extend continuously in the axial direction. As a result, said cutting ring can be produced in a relatively simply manner and has a long service life. Nothing to translate
Description
. .
Transtek Document No. GE0312 Cutting ring for a cutting roller for quarrying and cutting roller for quarrying The invention relates to a cutting ring of a cutting roller for quarrying as set forth in the preamble of Claim 1 and to a cutting roller for quarrying.
Such a cutting ring is known from US 7,401,537 Bl. The prior cutting ring is equipped with circumferentially closed cutting insert seats shaped as holes formed by boring. Cutting inserts are disposed in the cutting insert seats and are held therein by a press fit.
Intermediate portions located between the cutting inserts are hardened by laser machining.
The object underlying the invention is to provide a cutting ring of the initially cited kind that is distinguished by a relatively long service life combined with relatively simple production.
This object is achieved according to the invention, in a cutting ring of the initially cited kind, by means of the characterizing features of Claim 1.
By virtue of the fact that in the inventive cutting ring the cutting insert seats are continuous in the axial direction and are formed with stop walls only in the circumferential direction, the cutting inserts can be inserted in and reliably fixed in the cutting insert seats, particularly by being slid in in the axial direction.
Further useful embodiments of the invention are the subject matter of the dependent claims.
Further useful embodiments and advantages of the invention will be emerge from the following description of exemplary embodiments, read with reference to the figures of the drawing.
Transtek Document No. GE0312 Therein:
Fig. 1 is a side view of an implementation of a cutting roller for quarrying, comprising an exemplary embodiment of a cutting ring according to the invention, Fig. 2 shows the implementation according to Fig. 1 in a front view, Fig. 3 is a side view of another implementation of a cutting roller for quarrying, comprising another exemplary embodiment of a cutting ring according to the invention, Fig. 4 shows the implementation according to Fig. 3 in a front view, Fig. 5 shows the implementation according to Fig. 1 or Fig. 3 in a side view, Fig. 6 is an enlarged detail of a front view of an exemplary embodiment of a cutting ring according to the invention, and Fig. 7 is an enlarged sectional view of the exemplary embodiment according to Fig. 6.
Figure 1 is a sectional view of an exemplary embodiment of an implementation of a cutting roller 1 for quarrying, particularly by means of a tunnel boring machine, having a fixed cutting roller shaft 2. The cutting roller shaft 2 bears a flange-side cover 3 that abuts a ring shoulder 4 formed in an end region of the cutting roller shaft 2. Disposed between the flange-side cover 3 and the ring shoulder 4 is a sealing ring 5. At a radial distance from the cutting roller shaft 2, the flange-side cover 3 bears a portion of a ring sealing unit 6 that extends around the cutting roller shaft 2 and rests by another portion radially outwardly on a first shaft bearing body 7 and bears against a first seal carrier 8 disposed radially outward from the first shaft bearing body 7. Disposed at a radial distance from the first shaft bearing body 7 is a first cutting ring bearing body 9, a number of first bearing rollers 10 being disposed between the first shaft bearing body 7 and the first cutting ring bearing body 9.
Transtek Document No. GE0312 Cutting ring for a cutting roller for quarrying and cutting roller for quarrying The invention relates to a cutting ring of a cutting roller for quarrying as set forth in the preamble of Claim 1 and to a cutting roller for quarrying.
Such a cutting ring is known from US 7,401,537 Bl. The prior cutting ring is equipped with circumferentially closed cutting insert seats shaped as holes formed by boring. Cutting inserts are disposed in the cutting insert seats and are held therein by a press fit.
Intermediate portions located between the cutting inserts are hardened by laser machining.
The object underlying the invention is to provide a cutting ring of the initially cited kind that is distinguished by a relatively long service life combined with relatively simple production.
This object is achieved according to the invention, in a cutting ring of the initially cited kind, by means of the characterizing features of Claim 1.
By virtue of the fact that in the inventive cutting ring the cutting insert seats are continuous in the axial direction and are formed with stop walls only in the circumferential direction, the cutting inserts can be inserted in and reliably fixed in the cutting insert seats, particularly by being slid in in the axial direction.
Further useful embodiments of the invention are the subject matter of the dependent claims.
Further useful embodiments and advantages of the invention will be emerge from the following description of exemplary embodiments, read with reference to the figures of the drawing.
Transtek Document No. GE0312 Therein:
Fig. 1 is a side view of an implementation of a cutting roller for quarrying, comprising an exemplary embodiment of a cutting ring according to the invention, Fig. 2 shows the implementation according to Fig. 1 in a front view, Fig. 3 is a side view of another implementation of a cutting roller for quarrying, comprising another exemplary embodiment of a cutting ring according to the invention, Fig. 4 shows the implementation according to Fig. 3 in a front view, Fig. 5 shows the implementation according to Fig. 1 or Fig. 3 in a side view, Fig. 6 is an enlarged detail of a front view of an exemplary embodiment of a cutting ring according to the invention, and Fig. 7 is an enlarged sectional view of the exemplary embodiment according to Fig. 6.
Figure 1 is a sectional view of an exemplary embodiment of an implementation of a cutting roller 1 for quarrying, particularly by means of a tunnel boring machine, having a fixed cutting roller shaft 2. The cutting roller shaft 2 bears a flange-side cover 3 that abuts a ring shoulder 4 formed in an end region of the cutting roller shaft 2. Disposed between the flange-side cover 3 and the ring shoulder 4 is a sealing ring 5. At a radial distance from the cutting roller shaft 2, the flange-side cover 3 bears a portion of a ring sealing unit 6 that extends around the cutting roller shaft 2 and rests by another portion radially outwardly on a first shaft bearing body 7 and bears against a first seal carrier 8 disposed radially outward from the first shaft bearing body 7. Disposed at a radial distance from the first shaft bearing body 7 is a first cutting ring bearing body 9, a number of first bearing rollers 10 being disposed between the first shaft bearing body 7 and the first cutting ring bearing body 9.
2 Transtek Document No. GE0312 On the side of the first shaft bearing body 7 facing away from the flange-side cover 3, the cutting roller shaft 2 is surrounded by a compression ring 11, on whose side facing away from the shaft bearing body 7 is disposed a second shaft bearing body 12, which, like the first shaft bearing body 7, surrounds the cutting roller shaft 2.
Disposed at a radial distance from the second shaft bearing body 12 is a second cutting ring bearing body 13, a number of second bearing rollers 14 being disposed between the second shaft bearing body 12 and the second cutting ring bearing body 13. Disposed on the side of the second shaft bearing body 12 facing away from the compression ring 11 is a second ring sealing unit 15, which rests by a portion on the second shaft bearing body 12 and bears against a second seal carrier 16 disposed radially outward from the second shaft bearing body 12, while another portion of the second ring sealing unit 15 engages in a thread-side cover 17 disposed on the side of the shaft bearing body 12 facing away from the compression ring 11. The thread-side cover 17 can be screwed by means of an edge shaft nut 18 onto an external thread formed on the cutting roller shaft 2, thereby fixing the aforesaid components in the axial direction.
It can also be seen from the representation according to Fig. 1 that disposed on the radially outward-facing sides of the first flange-side cover 3, of the first seal carrier 8, of the first cutting ring bearing body 9, of the second cutting ring bearing body 13, of the second seal carrier 16 and of the thread-side cover 17 is a roller base body 19, which engages between the first cutting ring bearing body 9 and the second cutting ring bearing body 13 by a centering shoulder 20 directed radially toward the cutting roller shaft 2 and is fixedly connected to the first cutting ring bearing body 9 and the second cutting ring bearing body 13. The roller base body 19 is thus able to rotate relative to the cutting roller shaft 2.
Attached to the side of the roller base body 19 facing away from the cutting roller shaft 2 in the radial direction is an exemplary embodiment of a cutting ring 21 according to the invention, which in the implementation according to Fig. 1 rests in the axial direction against a stop shoulder 22 formed circumferentially on the roller base body 19, and on the opposite side from
Disposed at a radial distance from the second shaft bearing body 12 is a second cutting ring bearing body 13, a number of second bearing rollers 14 being disposed between the second shaft bearing body 12 and the second cutting ring bearing body 13. Disposed on the side of the second shaft bearing body 12 facing away from the compression ring 11 is a second ring sealing unit 15, which rests by a portion on the second shaft bearing body 12 and bears against a second seal carrier 16 disposed radially outward from the second shaft bearing body 12, while another portion of the second ring sealing unit 15 engages in a thread-side cover 17 disposed on the side of the shaft bearing body 12 facing away from the compression ring 11. The thread-side cover 17 can be screwed by means of an edge shaft nut 18 onto an external thread formed on the cutting roller shaft 2, thereby fixing the aforesaid components in the axial direction.
It can also be seen from the representation according to Fig. 1 that disposed on the radially outward-facing sides of the first flange-side cover 3, of the first seal carrier 8, of the first cutting ring bearing body 9, of the second cutting ring bearing body 13, of the second seal carrier 16 and of the thread-side cover 17 is a roller base body 19, which engages between the first cutting ring bearing body 9 and the second cutting ring bearing body 13 by a centering shoulder 20 directed radially toward the cutting roller shaft 2 and is fixedly connected to the first cutting ring bearing body 9 and the second cutting ring bearing body 13. The roller base body 19 is thus able to rotate relative to the cutting roller shaft 2.
Attached to the side of the roller base body 19 facing away from the cutting roller shaft 2 in the radial direction is an exemplary embodiment of a cutting ring 21 according to the invention, which in the implementation according to Fig. 1 rests in the axial direction against a stop shoulder 22 formed circumferentially on the roller base body 19, and on the opposite side from
3 Transtek Document No. GE0312 the cutting ring stop shoulder 22 is fixed in the axial direction by a releasable lock ring 23, which in turn is disposed in a lock ring groove 24 formed in the roller base body 19. The lock ring 23 thus is configured to be detachable from the roller base body 19, such that after the removal of the lock ring 23, the cutting ring 21, in the exemplary embodiment of Fig. 1, can be removed from the roller base body 19 by being slid off in the axial direction and is therefore replaceable.
The cutting ring 21 carries in a radially raised outer portion 25 a number of cutting inserts 26 made of a harder material than the material of the cutting ring 21.
Figure 2 is a front view of the exemplary embodiment of a cutting roller 1 according to Fig. 1. It can be seen from the representation according to Fig. 2 that the cutting inserts 26 are arranged equidistantly apart over the entire circumference of the cutting ring 21, there being a respective intermediate web portion 27 of the cutting ring 21 between each set of adjacent cutting ring inserts 26.
It can also be seen from the representation according to Fig. 2 that the cutting ring inserts 26 are disposed [in] cutting insert grooves 28, as cutting insert seats, that extend in the axial direction all the way through the raised outer portion 25 of the cutting ring 21 and terminate axially outwardly and -- at least in new condition -- radially outwardly flush with the intermediate web portions 27 of the cutting ring 21.
Figure 3 is a cross section of another implementation of a cutting roller 1 for quarrying, particularly by means of a tunnel boring machine, it being noted that, to avoid repetition, like elements in the implementation according to Figs. 1 and 2 and the implementation according to Fig. 3 have been given the same reference numerals and will not be described in more detail below. In deviation from the implementation of the cutting roller 1 according to Fig. 1 and Fig.
2, in the cutting roller 1 according to Fig. 3 the cutting ring 21 has three raised outer portions 25, each of which bears a number of cutting inserts 26. It can also be seen from the representation according to Fig. 3 that the cutting ring 21 is embodied as solid and, similarly to the roller base
The cutting ring 21 carries in a radially raised outer portion 25 a number of cutting inserts 26 made of a harder material than the material of the cutting ring 21.
Figure 2 is a front view of the exemplary embodiment of a cutting roller 1 according to Fig. 1. It can be seen from the representation according to Fig. 2 that the cutting inserts 26 are arranged equidistantly apart over the entire circumference of the cutting ring 21, there being a respective intermediate web portion 27 of the cutting ring 21 between each set of adjacent cutting ring inserts 26.
It can also be seen from the representation according to Fig. 2 that the cutting ring inserts 26 are disposed [in] cutting insert grooves 28, as cutting insert seats, that extend in the axial direction all the way through the raised outer portion 25 of the cutting ring 21 and terminate axially outwardly and -- at least in new condition -- radially outwardly flush with the intermediate web portions 27 of the cutting ring 21.
Figure 3 is a cross section of another implementation of a cutting roller 1 for quarrying, particularly by means of a tunnel boring machine, it being noted that, to avoid repetition, like elements in the implementation according to Figs. 1 and 2 and the implementation according to Fig. 3 have been given the same reference numerals and will not be described in more detail below. In deviation from the implementation of the cutting roller 1 according to Fig. 1 and Fig.
2, in the cutting roller 1 according to Fig. 3 the cutting ring 21 has three raised outer portions 25, each of which bears a number of cutting inserts 26. It can also be seen from the representation according to Fig. 3 that the cutting ring 21 is embodied as solid and, similarly to the roller base
4 Transtek Document No. GE0312 body 19 in the implementation according to Fig. 1 and Fig. 2, is placed on the radial outer sides of the covers 3, 17, of the seal carriers 8, 18 and of the cutting ring bearing bodies 9, 13.
Figure 4 is a front view of the implementation of the cutting roller 1, from which representation according to Fig. 4 it can be seen that the cutting insert grooves 28 are arranged in the outer portions 25 in such a way that a respective three cutting insert grooves 28 in different outer portions 25 are aligned with one another in the axial direction. This alignment is useful for production reasons.
Figure 5 shows the exemplary embodiments of cutting rollers 1 according to Figs. 1 to 4 in side view. It is particularly clear from the representation according to Fig. 5 that the cutting inserts 26 are exposed on the axially outward side.
Figure 6 is a detail view of a cutting ring 21 according to the invention in the region of three cutting inserts 26, disposed in cutting insert grooves 28 that are continuous in the axial direction and are spaced apart from one another by intermediate web portions 27 of the cutting ring 21. It can be seen especially clearly from the representation according to Fig. 6 that the cutting inserts 26 terminate by their respective outer contours flush with the intermediate web portions 27, thus eliminating the risk of excessive singular stresses on the cutting inserts 26 due to protruding regions.
Figure 7 is a detailed side view of a number of cutting inserts 26 disposed in cutting insert grooves 28. It can be seen from the representation according to Fig. 7 that each cutting insert groove 28 is formed with a planar base surface 29, which is adjoined on both sides by transition surfaces 30, 31 that are rounded in the circumferential direction of the cutting roller 21. Each of the transition surfaces 30, 31 is continued on its side remote from the base surface 29 by again planar radial side surfaces 32, 33, each extending toward the center of the circle defined by the cutting ring 21.
Transtek Document No. GE0312 Formed at the ends of the radial side surfaces 32, 33 directed away from the transition surfaces 30, 31 are annular step surfaces 34, 35 that extend outward in the circumferential direction of the cutting roller 21. The ends of the annular step surfaces 34, 35 that are disposed outward in the circumferential direction are adjoined by wedge side surfaces 36, 37 that extend in the radial direction all the way to the radial outer side of the cutting ring 21. The wedge side surfaces 36, 37 of a cutting insert groove 28 are oriented so that they are inclined toward each other from radially inward to radially outward, such that a cutting insert 26 shaped complementarily to the cutting insert groove 28, when inserted in the axial direction into the cutting insert groove 28, is held in place in the radial direction of the cutting ring 21.
To secure the cutting inserts 26 in the cutting insert grooves 28 in an operationally safe manner, the cutting insert grooves 28 are lined with solder layers 38, which ensure a secure connection after suitable heating of the cutting ring 21 in the region of the cutting insert grooves 28 and cutting inserts 26.
During operation of the cutting roller 1, the invention particularly furnishes the advantage that the cutting inserts 26 are secured only by their outer sides extending in the circumferential direction, which are subject to relatively little wear and tear. Moreover, wear on the cutting ring 21 occurs essentially in the intermediate web portions 27, so the cutting inserts 26 form a tooth structure and protect the intermediate web portions 27 against additional excessive wear.
Figure 4 is a front view of the implementation of the cutting roller 1, from which representation according to Fig. 4 it can be seen that the cutting insert grooves 28 are arranged in the outer portions 25 in such a way that a respective three cutting insert grooves 28 in different outer portions 25 are aligned with one another in the axial direction. This alignment is useful for production reasons.
Figure 5 shows the exemplary embodiments of cutting rollers 1 according to Figs. 1 to 4 in side view. It is particularly clear from the representation according to Fig. 5 that the cutting inserts 26 are exposed on the axially outward side.
Figure 6 is a detail view of a cutting ring 21 according to the invention in the region of three cutting inserts 26, disposed in cutting insert grooves 28 that are continuous in the axial direction and are spaced apart from one another by intermediate web portions 27 of the cutting ring 21. It can be seen especially clearly from the representation according to Fig. 6 that the cutting inserts 26 terminate by their respective outer contours flush with the intermediate web portions 27, thus eliminating the risk of excessive singular stresses on the cutting inserts 26 due to protruding regions.
Figure 7 is a detailed side view of a number of cutting inserts 26 disposed in cutting insert grooves 28. It can be seen from the representation according to Fig. 7 that each cutting insert groove 28 is formed with a planar base surface 29, which is adjoined on both sides by transition surfaces 30, 31 that are rounded in the circumferential direction of the cutting roller 21. Each of the transition surfaces 30, 31 is continued on its side remote from the base surface 29 by again planar radial side surfaces 32, 33, each extending toward the center of the circle defined by the cutting ring 21.
Transtek Document No. GE0312 Formed at the ends of the radial side surfaces 32, 33 directed away from the transition surfaces 30, 31 are annular step surfaces 34, 35 that extend outward in the circumferential direction of the cutting roller 21. The ends of the annular step surfaces 34, 35 that are disposed outward in the circumferential direction are adjoined by wedge side surfaces 36, 37 that extend in the radial direction all the way to the radial outer side of the cutting ring 21. The wedge side surfaces 36, 37 of a cutting insert groove 28 are oriented so that they are inclined toward each other from radially inward to radially outward, such that a cutting insert 26 shaped complementarily to the cutting insert groove 28, when inserted in the axial direction into the cutting insert groove 28, is held in place in the radial direction of the cutting ring 21.
To secure the cutting inserts 26 in the cutting insert grooves 28 in an operationally safe manner, the cutting insert grooves 28 are lined with solder layers 38, which ensure a secure connection after suitable heating of the cutting ring 21 in the region of the cutting insert grooves 28 and cutting inserts 26.
During operation of the cutting roller 1, the invention particularly furnishes the advantage that the cutting inserts 26 are secured only by their outer sides extending in the circumferential direction, which are subject to relatively little wear and tear. Moreover, wear on the cutting ring 21 occurs essentially in the intermediate web portions 27, so the cutting inserts 26 form a tooth structure and protect the intermediate web portions 27 against additional excessive wear.
Claims (6)
1. A cutting ring for a cutting roller (1) for quarrying, comprising a number of cutting inserts (26) disposed in cutting insert seats (28), characterized in that the cutting insert seats are formed as cutting insert grooves (28) that are continuous in the axial direction.
2. The cutting ring as in claim 1, characterized in that the cutting inserts (26) fill the cutting insert grooves (28) completely and terminate outwardly flush with intermediate web portions (27) formed between adjacent cutting insert grooves (28).
3. The cutting ring as in claim 1 or claim 2, characterized in that the cutting inserts (26) are disposed in a raised outer portion (25).
4. The cutting ring as in one of claims 1 to 3, characterized in that each cutting insert groove (28) has wedge insert surfaces (36, 37) that are inclined toward each other from radially inward to radially outward.
5. The cutting ring as in one of claims 1 to 4, characterized in that a solder layer is present between each cutting insert (26) and each cutting insert groove (28).
6. A cutting roller for quarrying, equipped with at least one cutting ring (2 1 ) as set forth in one of claims 1 to 5.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102012220434.2 | 2012-11-09 | ||
| DE102012220434.2A DE102012220434A1 (en) | 2012-11-09 | 2012-11-09 | Cutting ring for a cutting roll for rock mining and cutting roll for mining |
| PCT/EP2013/071054 WO2014072146A2 (en) | 2012-11-09 | 2013-10-09 | Cutting ring for a cutting roller for quarrying and cutting roller for quarrying |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2886925A1 true CA2886925A1 (en) | 2014-05-15 |
Family
ID=49378253
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2886925A Abandoned CA2886925A1 (en) | 2012-11-09 | 2013-10-09 | Cutting ring for a cutting roller for quarrying and cutting roller for quarrying |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US20150285073A1 (en) |
| EP (1) | EP2917487B1 (en) |
| JP (1) | JP2015535557A (en) |
| AU (1) | AU2013343775A1 (en) |
| CA (1) | CA2886925A1 (en) |
| DE (1) | DE102012220434A1 (en) |
| WO (1) | WO2014072146A2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102017205756A1 (en) | 2017-04-04 | 2018-10-04 | Implenia Construction GmbH | cutting roller |
| CN108115849A (en) * | 2017-12-04 | 2018-06-05 | 太原理工大学 | Prefabricated crack cutter device in a kind of small duct |
| DE102018005972A1 (en) | 2018-07-20 | 2020-01-23 | Hydac Technology Gmbh | cutting roller |
| DE102021102833A1 (en) * | 2021-02-08 | 2022-08-11 | Aktiebolaget Skf | cutting ring assembly |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US816768A (en) * | 1905-11-11 | 1906-04-03 | Harriet M Young | Stone-cutting saw. |
| US2121202A (en) * | 1935-03-19 | 1938-06-21 | Robert J Killgore | Rotary bit |
| ZA723776B (en) * | 1972-06-02 | 1974-01-30 | Hard Metals Ltd | Disc cutting unit for use on rock boring machines |
| ZA744897B (en) * | 1974-07-31 | 1976-05-26 | Board Hardmetal Proprietary Lt | Improvements in or relating to disc cutting units for use on rock boring machines |
| JPS6225699A (en) * | 1985-07-26 | 1987-02-03 | 日立造船株式会社 | Edged member and manufacture thereof |
| US5785135B1 (en) * | 1996-10-03 | 2000-05-02 | Baker Hughes Inc | Earth-boring bit having cutter with replaceable kerf ring with contoured inserts |
| JPH11223090A (en) * | 1998-02-05 | 1999-08-17 | Toshiba Tungaloy Co Ltd | Cutter ring for excavation and disc cutter for excavation |
| JP2000064789A (en) * | 1998-08-26 | 2000-02-29 | Mitsubishi Materials Corp | Roller cutter |
| JP2004122300A (en) * | 2002-10-03 | 2004-04-22 | Tenryu Saw Mfg Co Ltd | Rotating saw |
| US7401537B1 (en) | 2004-03-23 | 2008-07-22 | David Krauter | Cutter insert gum modification method and apparatus |
-
2012
- 2012-11-09 DE DE102012220434.2A patent/DE102012220434A1/en not_active Withdrawn
-
2013
- 2013-10-09 EP EP13777003.8A patent/EP2917487B1/en active Active
- 2013-10-09 CA CA2886925A patent/CA2886925A1/en not_active Abandoned
- 2013-10-09 WO PCT/EP2013/071054 patent/WO2014072146A2/en active Application Filing
- 2013-10-09 AU AU2013343775A patent/AU2013343775A1/en not_active Abandoned
- 2013-10-09 US US14/437,094 patent/US20150285073A1/en not_active Abandoned
- 2013-10-09 JP JP2015541062A patent/JP2015535557A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| WO2014072146A2 (en) | 2014-05-15 |
| US20150285073A1 (en) | 2015-10-08 |
| DE102012220434A1 (en) | 2014-06-12 |
| WO2014072146A3 (en) | 2014-11-20 |
| AU2013343775A1 (en) | 2015-04-23 |
| EP2917487B1 (en) | 2017-06-21 |
| EP2917487A2 (en) | 2015-09-16 |
| JP2015535557A (en) | 2015-12-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Discontinued |
Effective date: 20191009 |