US20190275591A1 - Cutting tool - Google Patents
Cutting tool Download PDFInfo
- Publication number
- US20190275591A1 US20190275591A1 US15/915,481 US201815915481A US2019275591A1 US 20190275591 A1 US20190275591 A1 US 20190275591A1 US 201815915481 A US201815915481 A US 201815915481A US 2019275591 A1 US2019275591 A1 US 2019275591A1
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- US
- United States
- Prior art keywords
- insert
- cutting tool
- cutting
- insert pocket
- 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
- B23B29/00—Holders for non-rotary cutting tools; Boring bars or boring heads; Accessories for tool holders
- B23B29/02—Boring bars
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B27/00—Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor
- B23B27/14—Cutting tools of which the bits or tips or cutting inserts are of special material
- B23B27/16—Cutting tools of which the bits or tips or cutting inserts are of special material with exchangeable cutting bits or cutting inserts, e.g. able to be clamped
- B23B27/1625—Cutting tools of which the bits or tips or cutting inserts are of special material with exchangeable cutting bits or cutting inserts, e.g. able to be clamped with plate-like cutting inserts of special shape clamped by a clamping member acting almost perpendicularly on the chip-forming plane
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B29/00—Holders for non-rotary cutting tools; Boring bars or boring heads; Accessories for tool holders
- B23B29/04—Tool holders for a single cutting tool
- B23B29/12—Special arrangements on tool holders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B29/00—Holders for non-rotary cutting tools; Boring bars or boring heads; Accessories for tool holders
- B23B29/24—Tool holders for a plurality of cutting tools, e.g. turrets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2200/00—Details of cutting inserts
- B23B2200/04—Overall shape
- B23B2200/049—Triangular
- B23B2200/0495—Triangular rounded
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2205/00—Fixation of cutting inserts in holders
- B23B2205/04—Fixation screws, bolts or pins of particular form
-
- 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
- B23B2226/12—Boron nitride
- B23B2226/125—Boron nitride cubic [CBN]
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2270/00—Details of turning, boring or drilling machines, processes or tools not otherwise provided for
- B23B2270/16—Constructions comprising three or more similar components
Definitions
- the embodiments described herein relate to the field of machining tools capable of cutting a work component.
- Cutting tools with cutting tool inserts that include cutting surfaces with high degrees of hardness are used in finebore machining processes.
- the high hardness cutting surfaces of the inserts may become dulled after as few as two uses, at which point they may be spent or used in a roughbore machining process.
- the materials required for these finebore machining processes such as artificial diamond or cubic boron nitride, can be costly to produce. Therefore, there is a need for a system that extends the life of the cutting tool inserts to maximize the usage of a single cutting tool insert in a finebore, or high precision, machining process.
- a machining tool for cutting a work component includes a cutting tool body, a cutting tool insert comprising a cutting tool insert body having a cutting surface along a portion of an external surface that defines a circumference of the cutting tool insert, a first cartridge insertable into and removable from the cutting tool body, the first cartridge having a first insert pocket defined therein and configured to receive the cutting tool insert, the cutting tool insert rotatable between at least first and second fixed positions in the first insert pocket, a first portion of the cutting surface exposed when the cutting tool insert is in the first fixed position, and a second portion of the cutting surface exposed when the cutting tool insert is in the second fixed position, and a second cartridge insertable into the cutting tool body when the first cartridge is removed and removable from the cutting tool body, the second cartridge having a second insert pocket defined therein and configured to receive the cutting tool insert, the second insert pocket being offset compared to the first insert pocket of the first cartridge, the cutting tool insert rotatable between at least first and second fixed positions in the second insert pocket, a third portion of the
- a machining tool for cutting a work component includes a cutting tool body, a cutting tool insert comprising a cutting tool insert body having a cutting surface along a portion of an external surface that defines a circumference of the cutting tool insert, a plurality of cartridges insertable into and removable from the cutting tool body, each of the plurality of cartridges having an insert pocket defined therein and configured to receive the cutting tool insert, the cutting tool insert rotatable between first, second and third fixed positions in each insert pocket of the plurality of cartridges, a first portion of the cutting surface exposed when the cutting tool insert is in the first fixed position, a second portion of the cutting surface exposed when the cutting tool insert is in the second fixed position, and a third portion of the cutting surface exposed when the cutting tool insert is in the third fixed position, the insert pocket of each of the plurality of cartridges being offset from each other.
- a method of cutting a work component with a machining tool includes the steps of inserting a cutting tool insert having a cutting surface that defines a circumference around the cutting tool insert into a first fixed position in an insert pocket formed in one of a plurality of cartridges, inserting the one of a plurality of cartridges into a body of the machining tool, cutting the work component, rotating the cutting tool insert to a second fixed position in the insert pocket, cutting the work component, rotating the cutting tool insert to a third fixed position in the insert pocket, cutting the work component, removing the one of a plurality of cartridges from the body of the machining tool, removing the cutting tool insert from the one of a plurality of cartridges, and inserting the cutting tool insert into another one of the plurality of cartridges in which the insert pocket is offset form the insert pocket of the one of plurality of cartridges.
- FIG. 1 is side view of a machining tool for cutting a work component.
- FIG. 2 is an embodiment of a plurality of cartridges and cutting tool inserts for use with the machining tool of FIG. 1 for cutting a work component.
- FIG. 3 is a perspective view of an embodiment of a cutting tool insert for use in the machining tool of FIG. 1 .
- FIG. 4 is a top view of the cutting tool insert of FIG. 3 .
- FIG. 5 is a side view of the cutting tool insert of FIG. 3 .
- FIG. 6 is a close-up of a portion of FIG. 5 , designated portion A in FIG. 5 .
- FIG. 7 is a schematic of a top view of the cutting tool insert of FIG. 3 with a close-up of a representative vertex illustrating regions J 1 -J 5 of the vertex's primary effective cutting surface.
- FIG. 8 is a top view of an embodiment of a first cartridge with the cutting tool insert installed for use with the machining tool of FIG. 1 .
- FIG. 9 is a perspective view of the first cartridge with the cutting tool insert of FIG. 8 .
- FIG. 10 is a top view of an embodiment of a second cartridge with the cutting tool insert installed for use with the machining tool of FIG. 1 .
- FIG. 11 is a perspective view of the second cartridge with the cutting tool insert of FIG. 10 .
- FIG. 12 is a top view of an embodiment of a third cartridge with the cutting tool insert installed for use with the machining tool of FIG. 1 .
- FIG. 13 is a perspective view of the third cartridge with the cutting tool insert of FIG. 12 .
- FIG. 14 is a top view of an embodiment of a fourth cartridge with the cutting tool insert installed for use with the machining tool of FIG. 1 .
- FIG. 15 is a perspective view of the fourth cartridge with the cutting tool insert of FIG. 14 .
- FIG. 16 is a top view of an embodiment of a fifth cartridge with the cutting tool insert installed for use with the machining tool of FIG. 1 .
- FIG. 17 is a perspective view of the fifth cartridge with the cutting tool insert of FIG. 16 .
- FIG. 1 is a view of a machining tool 10 used to cut a work component. The description below will reference one part of the machining tool 10 , but it should be understood that the embodiments described herein may be applied in bulk terms as illustrated in FIG. 1 .
- FIG. 2 is perspective view of a plurality of cartridges 12 , 14 , 16 , 18 , 20 for use with the machining tool 10 illustrated in FIG. 1 .
- Each of the cartridges 12 , 14 , 16 , 18 , 20 is designed to be inserted into the cutting tool body 22 of the machining tool 10 .
- Each of the cartridges 12 , 14 , 16 , 18 , 20 includes an insert pocket 24 for receiving a cutting tool insert 26 .
- machining tool 10 may include any number of cartridges that allows the machining tool 10 to function as described herein.
- FIGS. 3-7 are views of the cutting tool insert 26 .
- the cutting tool insert 26 is a generally in the shape of a triangular prism with rounded vertices 28 , 30 , 32 . Although illustrated as including three rounded vertices 28 , 30 , 32 , cutting tool insert 26 may include any number of vertices that allow the machining tool 10 to function as described herein.
- the body 34 of the cutting tool insert 26 may be constructed of tungsten carbide, or any other suitably hard material.
- the body 34 further includes a center bore 36 for receiving a fastener 38 (shown in FIG. 2 ), such as an insert screw, for securing the cutting tool insert 26 to each of the cartridges 12 , 14 , 16 , 18 , 20 .
- a top face 40 and a portion of an external surface 42 along the sides of the body 34 of the cutting tool insert 26 are coated with a cubic boron nitride layer 44 , or any other suitably hard coating.
- the portion of the cubic boron nitride layer 44 along the external surface 42 along the sides of the body 34 defines the cutting surface 46 of the cutting tool insert 26 .
- the cutting surface 46 may include a chamfered edge 48 to aid in cutting.
- the cutting tool insert 26 has a generally triangular shape when viewed from a top view, as viewed in FIGS. 4 and 7 , with three sides 50 , 52 , 54 of the external surface 42 and three rounded vertices 28 , 30 , 32 , the cutting tool insert 26 may have three primary effective cutting surfaces 56 , 58 , 60 located at the rounded vertices of the cutting tool insert 26 , which are exposed when the cutting tool insert 26 is inserted into the insert pocket 24 and secured with the fastener 38 seated in the bore 36 .
- the cutting tool insert 26 may be removed and rotated so the second primary effective cutting surface 58 of the second vertex 30 is used in the machining tool 10 .
- the cutting tool insert 26 may be removed and rotated so the third primary effective cutting surface 60 of the third vertex 32 is used in the machining tool 20 .
- the external surface 42 along the sides of the body 34 provide sidewalls of the cutting tool insert 26 that engage with the walls of the insert pocket 24 that, in conjunction with the fastener 38 , securely hold the cutting tool insert 26 in place during use.
- the vertices 28 , 30 , 32 which are exposed one at a time, provide the primary effective cutting surfaces 56 , 58 , 60 used in the machining process.
- the cutting tool insert 26 may also be coated with a titanium nitride, or tinite, coating.
- the titanium nitride coating may be used to further harden and extend the cutting life of the cutting surface 46 specifically and the cutting tool insert 26 in general. Any other suitable coating known to those skilled in the art may also be applied.
- FIGS. 8-17 illustrate an embodiment showing five separate cartridges 12 , 14 , 16 , 18 , 20 , each used with a single cutting tool insert 26 .
- the insert pocket 24 in any of the cartridges 12 , 14 , 16 , 18 , 20 is offset from the insert pocket 24 of each of the other cartridges 12 , 14 , 16 , 18 , 20 .
- the offset insert pockets 24 for each of the five cartridges 12 , 14 , 16 , 18 , 20 permit a different portion J 1 , J 2 , J 3 , J 4 , J 5 of each of the rounded vertices 28 , 30 , 32 of the cutting tool insert 26 , as illustrated in FIG. 7 , to be the distal point of contact when the cutting tool insert 26 is inserted in each of the five cartridges 12 , 14 , 16 , 18 , 20 .
- the cutting tool insert 26 is positioned and secured using fastener 38 in the first cartridge 12 , with the exposed side 50 of the external surface 42 angled at ⁇ 1 from vertical, as shown in FIG. 8 , exposing portion J 1 of the first vertex 28 .
- angle ⁇ 1 is approximately 15°, although in alternate embodiments ⁇ 1 may range between 10° and 25°.
- the first cartridge 12 is positioned in the machining tool 10 as illustrated in FIG. 1 , and the first effective cutting surface 56 may be utilized for additional operations, usually a specified number of operations, until it becomes too dull to perform additional operations. In the typical machining tool 10 , the cutting tool insert 26 may be used for two cutting operations before requiring replacement.
- the first cartridge 12 After completing the specified number of operations, the first cartridge 12 is removed, and the cutting tool insert 26 is removed and rotated to expose the portion J 1 of the second vertex 30 . At this point, the first cartridge 12 is then returned to the machining tool 10 for the specified number of operations. The process is repeated a third time to expose the portion J 1 of the third vertex 32 for a specified number of operations.
- the cutting tool insert 26 is removed from the first cartridge 12 and inserted into and secured using fastener 38 to the second cartridge 14 for use in the machining tool 10 as illustrated in FIG. 1 .
- the cutting tool insert 26 is positioned and secured in the second cartridge 14 , with the exposed side 50 of the external surface 42 angled at ⁇ 2 , illustrated as approximately 35° from vertical, or approximately 20° greater than the offset of the first cartridge 12 , exposing portion J 2 of the first vertex 28 on the cutting tool insert 26 as the exposed effective cutting surface 56 .
- the cutting tool insert 26 is used for a specified number of operations in the second cartridge 14 , typically two, for each portion J 2 of the effective cutting surfaces 56 , 58 , 60 of the vertices 28 , 30 , 32 .
- the offset is approximately 20° greater in the successive cartridges when compared to the previous cartridge, the offsets may vary by as few as 10° and as much as 25° for each of the cartridges 12 , 14 , 16 , 18 , 20 .
- the cutting tool insert 26 is removed from the second cartridge 14 and inserted into and secured using fastener 38 to the third cartridge 16 for use in the machining tool 10 as illustrated in FIG. 1 .
- the cutting tool insert 26 is positioned and secured in the third cartridge 16 , with the exposed side 50 of the external surface 42 angled at ⁇ 3 , illustrated as approximately 55° from vertical, or approximately 20° greater than the offset of the second cartridge 14 , exposing portion J 3 of the first vertex 28 of the cutting tool insert 26 as the exposed cutting surface 56 .
- the cutting tool insert 26 is used for a specified number of operations in the third cartridge 16 , typically two, for each portion J 3 of the effective cutting surfaces 56 , 58 , 60 of the vertices 28 , 30 , 32 .
- the cutting tool insert 26 is removed from the third cartridge 16 and inserted into and secured with fastener 38 to the fourth cartridge 18 for use in the machining tool 10 as illustrated in FIG. 1 .
- the cutting tool insert 26 is positioned and secured in the fourth cartridge 14 , with the exposed side 50 of the external surface 42 angled at ⁇ 4 , illustrated as approximately 75° from vertical, or approximately 20° greater than the offset of the third cartridge 16 , exposing portion J 4 of the first vertex 28 of the cutting tool insert 26 as the exposed cutting surface 56 .
- the cutting tool insert 26 is used for a specified number of operations in the fourth cartridge 18 , typically two, for each portion J 4 of the vertices 28 , 30 , 32 .
- the cutting tool insert 26 is removed from the fourth cartridge 18 and inserted into and secured using fastener 38 to the fifth cartridge 18 for use in the machining tool 10 as illustrated in FIG. 1 .
- the cutting tool insert 26 is positioned and secured in the fifth cartridge 20 , with the exposed side 50 of the external surface 42 angled at ⁇ 5 , illustrated as approximately 95° from vertical, or approximately 20° greater than the offset of the fourth cartridge 18 , exposing portion J 5 of the first vertex 28 of the cutting tool insert as the exposed cutting surface.
- the cutting tool insert 26 is used for a specified number of operations in the fifth cartridge 20 , typically two, for each portion J 5 of the vertices 28 , 30 , 32 .
- the embodiments described herein refer to a triangular-prism shaped cutting tool insert 26 insertable into five cartridges 12 , 14 , 16 , 18 , 20 with offsets ⁇ 1 , ⁇ 2 , ⁇ 3 , ⁇ 4 , and ⁇ 5 from vertical ranging from 15° to 95°.
- offsets ⁇ 1 , ⁇ 2 , ⁇ 3 , ⁇ 4 , and ⁇ 5 from vertical ranging from 15° to 95° None in this application should be construed as limiting or disclaiming other shapes of cutting tool inserts 26 or the number and offsets of the cartridges.
- the embodiments are presented for illustration purposes.
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Abstract
Description
- The embodiments described herein relate to the field of machining tools capable of cutting a work component.
- Cutting tools with cutting tool inserts that include cutting surfaces with high degrees of hardness are used in finebore machining processes. The high hardness cutting surfaces of the inserts may become dulled after as few as two uses, at which point they may be spent or used in a roughbore machining process. The materials required for these finebore machining processes, such as artificial diamond or cubic boron nitride, can be costly to produce. Therefore, there is a need for a system that extends the life of the cutting tool inserts to maximize the usage of a single cutting tool insert in a finebore, or high precision, machining process.
- The features and advantages described in the specification are not all inclusive and, in particular, many additional features and advantages will be apparent to one of ordinary skill in the art in view of the drawings, specification, and claims. Moreover, it should be noted that the language used in the specification has been principally selected for readability and instructional purposes, and may not have been selected to delineate or circumscribe the inventive subject matter.
- According to one aspect, a machining tool for cutting a work component includes a cutting tool body, a cutting tool insert comprising a cutting tool insert body having a cutting surface along a portion of an external surface that defines a circumference of the cutting tool insert, a first cartridge insertable into and removable from the cutting tool body, the first cartridge having a first insert pocket defined therein and configured to receive the cutting tool insert, the cutting tool insert rotatable between at least first and second fixed positions in the first insert pocket, a first portion of the cutting surface exposed when the cutting tool insert is in the first fixed position, and a second portion of the cutting surface exposed when the cutting tool insert is in the second fixed position, and a second cartridge insertable into the cutting tool body when the first cartridge is removed and removable from the cutting tool body, the second cartridge having a second insert pocket defined therein and configured to receive the cutting tool insert, the second insert pocket being offset compared to the first insert pocket of the first cartridge, the cutting tool insert rotatable between at least first and second fixed positions in the second insert pocket, a third portion of the cutting surface exposed when the cutting tool insert is in the first fixed position of the second insert pocket, and a fourth portion of the cutting surface exposed when the cutting tool insert is in the second fixed position of the second insert pocket.
- According to another aspect, a machining tool for cutting a work component includes a cutting tool body, a cutting tool insert comprising a cutting tool insert body having a cutting surface along a portion of an external surface that defines a circumference of the cutting tool insert, a plurality of cartridges insertable into and removable from the cutting tool body, each of the plurality of cartridges having an insert pocket defined therein and configured to receive the cutting tool insert, the cutting tool insert rotatable between first, second and third fixed positions in each insert pocket of the plurality of cartridges, a first portion of the cutting surface exposed when the cutting tool insert is in the first fixed position, a second portion of the cutting surface exposed when the cutting tool insert is in the second fixed position, and a third portion of the cutting surface exposed when the cutting tool insert is in the third fixed position, the insert pocket of each of the plurality of cartridges being offset from each other.
- According to yet another aspect, a method of cutting a work component with a machining tool includes the steps of inserting a cutting tool insert having a cutting surface that defines a circumference around the cutting tool insert into a first fixed position in an insert pocket formed in one of a plurality of cartridges, inserting the one of a plurality of cartridges into a body of the machining tool, cutting the work component, rotating the cutting tool insert to a second fixed position in the insert pocket, cutting the work component, rotating the cutting tool insert to a third fixed position in the insert pocket, cutting the work component, removing the one of a plurality of cartridges from the body of the machining tool, removing the cutting tool insert from the one of a plurality of cartridges, and inserting the cutting tool insert into another one of the plurality of cartridges in which the insert pocket is offset form the insert pocket of the one of plurality of cartridges.
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FIG. 1 is side view of a machining tool for cutting a work component. -
FIG. 2 is an embodiment of a plurality of cartridges and cutting tool inserts for use with the machining tool ofFIG. 1 for cutting a work component. -
FIG. 3 is a perspective view of an embodiment of a cutting tool insert for use in the machining tool ofFIG. 1 . -
FIG. 4 is a top view of the cutting tool insert ofFIG. 3 . -
FIG. 5 is a side view of the cutting tool insert ofFIG. 3 . -
FIG. 6 is a close-up of a portion ofFIG. 5 , designated portion A inFIG. 5 . -
FIG. 7 is a schematic of a top view of the cutting tool insert ofFIG. 3 with a close-up of a representative vertex illustrating regions J1-J5 of the vertex's primary effective cutting surface. -
FIG. 8 is a top view of an embodiment of a first cartridge with the cutting tool insert installed for use with the machining tool ofFIG. 1 . -
FIG. 9 is a perspective view of the first cartridge with the cutting tool insert ofFIG. 8 . -
FIG. 10 is a top view of an embodiment of a second cartridge with the cutting tool insert installed for use with the machining tool ofFIG. 1 . -
FIG. 11 is a perspective view of the second cartridge with the cutting tool insert ofFIG. 10 . -
FIG. 12 is a top view of an embodiment of a third cartridge with the cutting tool insert installed for use with the machining tool ofFIG. 1 . -
FIG. 13 is a perspective view of the third cartridge with the cutting tool insert ofFIG. 12 . -
FIG. 14 is a top view of an embodiment of a fourth cartridge with the cutting tool insert installed for use with the machining tool ofFIG. 1 . -
FIG. 15 is a perspective view of the fourth cartridge with the cutting tool insert ofFIG. 14 . -
FIG. 16 is a top view of an embodiment of a fifth cartridge with the cutting tool insert installed for use with the machining tool ofFIG. 1 . -
FIG. 17 is a perspective view of the fifth cartridge with the cutting tool insert ofFIG. 16 . - The figures depict various embodiments for purposes of illustration only. One skilled in the art will readily recognize from the following discussion that alternative embodiments of the structures and methods illustrated herein may be employed without departing from the principles of the embodiments described herein.
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FIG. 1 is a view of amachining tool 10 used to cut a work component. The description below will reference one part of themachining tool 10, but it should be understood that the embodiments described herein may be applied in bulk terms as illustrated inFIG. 1 . -
FIG. 2 is perspective view of a plurality ofcartridges machining tool 10 illustrated inFIG. 1 . Each of thecartridges cutting tool body 22 of themachining tool 10. Each of thecartridges insert pocket 24 for receiving a cutting tool insert 26. Although illustrated as including fivecartridges machining tool 10 may include any number of cartridges that allows themachining tool 10 to function as described herein. -
FIGS. 3-7 are views of the cutting tool insert 26. Thecutting tool insert 26 is a generally in the shape of a triangular prism withrounded vertices rounded vertices cutting tool insert 26 may include any number of vertices that allow themachining tool 10 to function as described herein. Thebody 34 of the cutting tool insert 26 may be constructed of tungsten carbide, or any other suitably hard material. Thebody 34 further includes acenter bore 36 for receiving a fastener 38 (shown inFIG. 2 ), such as an insert screw, for securing the cutting tool insert 26 to each of thecartridges - A
top face 40 and a portion of anexternal surface 42 along the sides of thebody 34 of thecutting tool insert 26 are coated with a cubicboron nitride layer 44, or any other suitably hard coating. The portion of the cubicboron nitride layer 44 along theexternal surface 42 along the sides of thebody 34 defines thecutting surface 46 of thecutting tool insert 26. As illustrated inFIG. 6 , thecutting surface 46 may include achamfered edge 48 to aid in cutting. - Because the
cutting tool insert 26 has a generally triangular shape when viewed from a top view, as viewed inFIGS. 4 and 7 , with threesides external surface 42 and threerounded vertices cutting tool insert 26 may have three primaryeffective cutting surfaces cutting tool insert 26, which are exposed when thecutting tool insert 26 is inserted into theinsert pocket 24 and secured with thefastener 38 seated in thebore 36. After the first primaryeffective cutting surface 56 of thefirst vertex 28 is used in themachining tool 10, thecutting tool insert 26 may be removed and rotated so the second primaryeffective cutting surface 58 of thesecond vertex 30 is used in themachining tool 10. Finally, after the second primaryeffective cutting surface 58 of thesecond vertex 30 is used, thecutting tool insert 26 may be removed and rotated so the third primaryeffective cutting surface 60 of thethird vertex 32 is used in themachining tool 20. Theexternal surface 42 along the sides of thebody 34 provide sidewalls of the cutting tool insert 26 that engage with the walls of theinsert pocket 24 that, in conjunction with thefastener 38, securely hold the cutting tool insert 26 in place during use. Thevertices effective cutting surfaces - In addition to the cubic
boron nitride layer 44 that defines thecutting surface 46 on the theexternal surface 42, thecutting tool insert 26 may also be coated with a titanium nitride, or tinite, coating. The titanium nitride coating may be used to further harden and extend the cutting life of thecutting surface 46 specifically and the cutting tool insert 26 in general. Any other suitable coating known to those skilled in the art may also be applied. -
FIGS. 8-17 illustrate an embodiment showing fiveseparate cartridges cutting tool insert 26. In each of the fivecartridges FIGS. 8-17 theinsert pocket 24 in any of thecartridges insert pocket 24 of each of theother cartridges pockets 24 for each of the fivecartridges rounded vertices FIG. 7 , to be the distal point of contact when thecutting tool insert 26 is inserted in each of the fivecartridges - In the embodiment illustrated in
FIGS. 8-9 , thecutting tool insert 26 is positioned and secured usingfastener 38 in thefirst cartridge 12, with the exposedside 50 of theexternal surface 42 angled at α1 from vertical, as shown inFIG. 8 , exposing portion J1 of thefirst vertex 28. In the illustrated embodiment angle α1 is approximately 15°, although in alternate embodiments α1 may range between 10° and 25°. Thefirst cartridge 12 is positioned in themachining tool 10 as illustrated inFIG. 1 , and the firsteffective cutting surface 56 may be utilized for additional operations, usually a specified number of operations, until it becomes too dull to perform additional operations. In thetypical machining tool 10, thecutting tool insert 26 may be used for two cutting operations before requiring replacement. After completing the specified number of operations, thefirst cartridge 12 is removed, and thecutting tool insert 26 is removed and rotated to expose the portion J1 of thesecond vertex 30. At this point, thefirst cartridge 12 is then returned to themachining tool 10 for the specified number of operations. The process is repeated a third time to expose the portion J1 of thethird vertex 32 for a specified number of operations. - After completing the specified number of operations using each of the
vertices cutting tool insert 26 in thefirst cartridge 12, thecutting tool insert 26 is removed from thefirst cartridge 12 and inserted into and secured usingfastener 38 to thesecond cartridge 14 for use in themachining tool 10 as illustrated inFIG. 1 . As illustrated inFIGS. 10-11 , thecutting tool insert 26 is positioned and secured in thesecond cartridge 14, with the exposedside 50 of theexternal surface 42 angled at α2, illustrated as approximately 35° from vertical, or approximately 20° greater than the offset of thefirst cartridge 12, exposing portion J2 of thefirst vertex 28 on thecutting tool insert 26 as the exposedeffective cutting surface 56. As with thefirst cartridge 12, thecutting tool insert 26 is used for a specified number of operations in thesecond cartridge 14, typically two, for each portion J2 of the effective cutting surfaces 56, 58, 60 of thevertices - While in the embodiment disclosed herein the offset is approximately 20° greater in the successive cartridges when compared to the previous cartridge, the offsets may vary by as few as 10° and as much as 25° for each of the
cartridges - After completing the specified number of operations using each of the
vertices cutting tool insert 26 in thesecond cartridge 14, thecutting tool insert 26 is removed from thesecond cartridge 14 and inserted into and secured usingfastener 38 to thethird cartridge 16 for use in themachining tool 10 as illustrated inFIG. 1 . As illustrated inFIGS. 12-13 , thecutting tool insert 26 is positioned and secured in thethird cartridge 16, with the exposedside 50 of theexternal surface 42 angled at α3, illustrated as approximately 55° from vertical, or approximately 20° greater than the offset of thesecond cartridge 14, exposing portion J3 of thefirst vertex 28 of thecutting tool insert 26 as the exposed cuttingsurface 56. As with the first andsecond cartridges cutting tool insert 26 is used for a specified number of operations in thethird cartridge 16, typically two, for each portion J3 of the effective cutting surfaces 56, 58, 60 of thevertices - After completing the specified number of operations using each of the
vertices cutting tool insert 26 in thethird cartridge 16, thecutting tool insert 26 is removed from thethird cartridge 16 and inserted into and secured withfastener 38 to thefourth cartridge 18 for use in themachining tool 10 as illustrated inFIG. 1 . As illustrated inFIGS. 14-15 , thecutting tool insert 26 is positioned and secured in thefourth cartridge 14, with the exposedside 50 of theexternal surface 42 angled at α4, illustrated as approximately 75° from vertical, or approximately 20° greater than the offset of thethird cartridge 16, exposing portion J4 of thefirst vertex 28 of thecutting tool insert 26 as the exposed cuttingsurface 56. As with the first, second, andthird cartridges cutting tool insert 26 is used for a specified number of operations in thefourth cartridge 18, typically two, for each portion J4 of thevertices - After completing the specified number of operations using each of the
vertices cutting tool insert 26 in thefourth cartridge 18, thecutting tool insert 26 is removed from thefourth cartridge 18 and inserted into and secured usingfastener 38 to thefifth cartridge 18 for use in themachining tool 10 as illustrated inFIG. 1 . As illustrated inFIGS. 16-17 , thecutting tool insert 26 is positioned and secured in thefifth cartridge 20, with the exposedside 50 of theexternal surface 42 angled at α5, illustrated as approximately 95° from vertical, or approximately 20° greater than the offset of thefourth cartridge 18, exposing portion J5 of thefirst vertex 28 of the cutting tool insert as the exposed cutting surface. As with thefirst cartridge 12, thecutting tool insert 26 is used for a specified number of operations in thefifth cartridge 20, typically two, for each portion J5 of thevertices - The embodiments described herein refer to a triangular-prism shaped cutting
tool insert 26 insertable into fivecartridges - Reference in the specification to “one embodiment” or to “an embodiment” means that a particular feature, structure, or characteristic described in connection with the embodiments is included in at least one embodiment. The appearances of the phrase “in one embodiment” or “an embodiment” in various places in the specification are not necessarily all referring to the same embodiment.
- In addition, the language used in the specification has been principally selected for readability and instructional purposes, and may not have been selected to delineate or circumscribe the inventive subject matter. Accordingly, the disclosure of the embodiments is intended to be illustrative, but not limiting, of the scope of the embodiments, which is set forth in the claims.
- While particular embodiments and applications have been illustrated and described herein, it is to be understood that the embodiments are not limited to the precise construction and components disclosed herein and that various modifications, changes, and variations may be made in the arrangement, operation, and details of the methods and apparatuses of the embodiments without departing from the spirit and scope of the embodiments as defined in the appended claims.
Claims (20)
Priority Applications (1)
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US20160121406A1 (en) | 2014-10-29 | 2016-05-05 | Illinois Tool Works Inc. | Interchangeable cutting inserts and methods associated with the same |
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DE2320876B2 (en) | 1973-04-25 | 1979-07-12 | Gebrueder Heller, 2807 Achim | Reversible knife for an open boring pot with knife holder |
DE2834083A1 (en) | 1978-08-03 | 1980-02-21 | Walter Gmbh Montanwerke | DRILL WITH REPLACEMENT KIT |
JPH0135777Y2 (en) | 1985-05-25 | 1989-11-01 | ||
US6220795B1 (en) | 1999-04-05 | 2001-04-24 | Vermont Indexable Tooling, Inc. | Spotting drill and milling cutter |
US7059810B2 (en) * | 2002-04-18 | 2006-06-13 | Kennametal Inc. | Gear hobbing cutter system |
AT7804U1 (en) * | 2004-02-11 | 2005-09-26 | Ceratizit Austria Gmbh | BLADE CUTTING INSERT AND TOOL FOR ITS USE |
US7736099B2 (en) * | 2005-12-16 | 2010-06-15 | Cole Carbide Industries, Inc. | Gear milling tool with replaceable cutting inserts |
DE202007007063U1 (en) * | 2007-05-16 | 2007-09-27 | Klingelnberg Ag | Bevel gear milling tool with milling cutting plates |
JP5078731B2 (en) | 2008-04-25 | 2012-11-21 | ユニタック株式会社 | Throw away insert for deep hole cutting and drill head for deep hole cutting |
SE533267C2 (en) * | 2008-12-16 | 2010-08-03 | Sandvik Intellectual Property | Cutting kit, procedure for making inserts, and a cutter separated from a cutting kit |
DE102009051073A1 (en) | 2009-10-28 | 2011-05-12 | Kennametal Inc. | Multiple indexable insert for a drilling tool |
US20120282048A1 (en) | 2011-05-03 | 2012-11-08 | Diamond Innovations, Inc. | Insert With A Wiper To Induce Chip Thinning On A Leading Edge |
US8734064B2 (en) | 2011-08-24 | 2014-05-27 | Century Tool & Design, Inc. | Cutting insert for a machine tool |
US20130202375A1 (en) | 2012-02-03 | 2013-08-08 | Karthic Ramesh | Indexable drill insert, a drilling tool and a method of assembling thereof |
CN103252538B (en) * | 2012-02-16 | 2020-01-17 | 山特维克知识产权股份有限公司 | Face hobbing cutter system and indexable milling insert therefor |
EP2871015B1 (en) * | 2013-11-11 | 2018-10-10 | Sandvik Intellectual Property AB | Gear milling cutter as well as an insert holder and a chip removal unit |
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