WO2014084254A1 - 切削インサート、切削工具および切削加工物の製造方法 - Google Patents
切削インサート、切削工具および切削加工物の製造方法 Download PDFInfo
- Publication number
- WO2014084254A1 WO2014084254A1 PCT/JP2013/081892 JP2013081892W WO2014084254A1 WO 2014084254 A1 WO2014084254 A1 WO 2014084254A1 JP 2013081892 W JP2013081892 W JP 2013081892W WO 2014084254 A1 WO2014084254 A1 WO 2014084254A1
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- WIPO (PCT)
- Prior art keywords
- cutting
- rake face
- insert
- recess
- cutting insert
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C5/00—Milling-cutters
- B23C5/16—Milling-cutters characterised by physical features other than shape
- B23C5/20—Milling-cutters characterised by physical features other than shape with removable cutter bits or teeth or cutting inserts
- B23C5/202—Plate-like cutting inserts with special form
- B23C5/205—Plate-like cutting inserts with special form characterised by chip-breakers of special form
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C5/00—Milling-cutters
- B23C5/02—Milling-cutters characterised by the shape of the cutter
- B23C5/10—Shank-type cutters, i.e. with an integral shaft
- B23C5/109—Shank-type cutters, i.e. with an integral shaft with removable cutting inserts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C5/00—Milling-cutters
- B23C5/28—Features relating to lubricating or cooling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2200/00—Details of milling cutting inserts
- B23C2200/04—Overall shape
- B23C2200/045—Round
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2200/00—Details of milling cutting inserts
- B23C2200/08—Rake or top surfaces
- B23C2200/081—Rake or top surfaces with projections
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2200/00—Details of milling cutting inserts
- B23C2200/32—Chip breaking or chip evacuation
- B23C2200/326—Chip breaking or chip evacuation by chip-breaking grooves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C5/00—Milling-cutters
- B23C5/16—Milling-cutters characterised by physical features other than shape
- B23C5/20—Milling-cutters characterised by physical features other than shape with removable cutter bits or teeth or cutting inserts
Definitions
- the present invention relates to a cutting insert, a cutting tool, and a manufacturing method of a cut workpiece.
- Patent Document 1 a milling insert described in Japanese Patent Application Laid-Open No. 2013-31923 (Patent Document 1) is known as a cutting insert used for cutting a workpiece to be cut.
- the milling insert described in Patent Document 1 has a cutting portion (cutting edge) at the intersection of the upper surface and the side surface, and a plurality of recesses for supplying a cooling fluid (coolant) to the upper surface.
- the cutting insert based on 1 aspect of this invention is equipped with the upper surface, the lower surface, the side surface connected to each of the said upper surface and the said lower surface, and the cutting blade located in the intersection part of the said upper surface and the said side surface.
- the upper surface is a land surface provided along the cutting edge, a rake surface that is located on the inner side of the land surface, is inclined so as to decrease in height as it moves away from the land surface, and an inner side of the rake surface. And has a bottom surface located at the bottom.
- the rake face has a plurality of first parts and a plurality of second parts provided alternately along the bottom face.
- the plurality of second portions are regions having an inclination angle larger than that of the plurality of first portions and recessed in the rake face, and the first portion is along the cutting edge. It has the 1st recessed part provided.
- FIG. 4 is a cross-sectional view of the D1-D1 cross section in the cutting insert shown in FIG. 3.
- FIG. 4 is a cross-sectional view of the D2-D2 cross section in the cutting insert shown in FIG. 3.
- FIG. 4 is a cross-sectional view of a D3-D3 cross section in the cutting insert shown in FIG. 3.
- D4-D4 cross section in the cutting insert shown in FIG. It is a perspective view which shows the 1st modification of the cutting insert shown in FIG. It is a perspective view which shows the 2nd modification of the cutting insert shown in FIG. It is a perspective view which shows the 3rd modification of the cutting insert shown in FIG. It is sectional drawing of D5-D5 cross section in the cutting insert shown in FIG. It is a perspective view which shows the cutting tool of one Embodiment of this invention. It is a perspective view which shows 1 process of the manufacturing method of the cut workpiece of one Embodiment of this invention. It is a perspective view which shows 1 process of the manufacturing method of the cut workpiece of one Embodiment of this invention. It is a perspective view which shows 1 process of the manufacturing method of the cut workpiece of one Embodiment of this invention. It is a perspective view which shows 1 process of the manufacturing method of the cut workpiece of one Embodiment of this invention.
- the cutting insert of the present invention may include any component not shown in the drawings to which the present specification refers.
- the dimension of the member in each figure does not represent the dimension of an actual structural member, the dimension ratio of each member, etc. faithfully.
- the cutting insert 1 of the present embodiment has an upper surface 3, a lower surface 5, and a side surface 7.
- the side surface 7 is connected to each of the upper surface 3 and the lower surface 5.
- a cutting edge 9 is formed at the intersection of the upper surface 3 and the side surface 7.
- the cutting insert 1 of the present embodiment has a central axis X that passes through the center of the lower surface 5 and the center of the upper surface 3.
- the cutting insert 1 has a through hole 11 that opens at the center of each of the upper surface 3 and the lower surface 5. Therefore, the through hole 11 is located so as to include the central axis X, and the through direction of the through hole 11 is parallel to the central axis X.
- the through hole 11 is provided to insert a screw when the cutting insert 1 is fixed to a holder of a cutting tool to be described later with a screw.
- the upper surface 3 and the lower surface 5 each have a substantially circular shape when viewed in plan (upper surface view), and have substantially the same shape.
- the lower surface 5 is smaller than the upper surface 3. Therefore, when viewed from the side, the side surface 7 is inclined so as to approach the central axis X from the portion connected to the upper surface 3 toward the portion connected to the lower surface 5.
- the maximum width of the upper surface 3 and the lower surface 5 in the cutting insert 1 of the present embodiment is 5 to 20 mm.
- the height from the lower surface 5 to the upper surface 3 is 2 to 8 mm.
- the maximum width of the upper surface 3 means the maximum value of the width of the upper surface 3 when viewed from above.
- the diameter of a virtual circumscribed circle with respect to the upper surface 3 is the maximum width.
- the maximum width of the upper surface 3 is indicated by the width L in FIG.
- the maximum width of the lower surface 5 means the maximum value of the width of the lower surface 5 when viewed from below.
- the diameter of a virtual circumscribed circle with respect to the lower surface 5 is the maximum width.
- the height from the lower surface 5 to the upper surface 3 means the height in a direction parallel to the central axis X between the upper end of the upper surface 3 and the lower end of the lower surface 5.
- the shapes of the upper surface 3 and the lower surface 5 are not limited to the above-described form.
- the shape of the upper surface 3 when viewed from above may be a polygonal shape such as a triangle, a quadrangle, a pentagon, a hexagon, or an octagon.
- it is not limited to circular arc shape. It may be a convex curve that is convex outward, such as a parabola or an elliptic curve.
- Examples of the material of the cutting insert 1 include cemented carbide or cermet.
- the composition of the cemented carbide is, for example, WC—Co produced by adding cobalt (Co) powder to tungsten carbide (WC) and sintering, and WC—coating WC—Co with titanium carbide (TiC).
- WC—TiC—TaC—Co in which tantalum carbide (TaC) is added to TiC—Co or WC—TiC—Co.
- the cermet is a sintered composite material in which a metal is combined with a ceramic component, and specifically, a sintered composite material mainly composed of a titanium compound such as titanium carbide (TiC) or titanium nitride (TiN). Is mentioned.
- the surface of the cutting insert 1 may be coated with a film using a chemical vapor deposition (CVD) method or a physical vapor deposition (PVD) method.
- CVD chemical vapor deposition
- PVD physical vapor deposition
- the composition of the coating include titanium carbide (TiC), titanium nitride (TiN), titanium carbonitride (TiCN), and alumina (Al 2 O 3 ).
- the upper surface 3 has a land surface 13, a rake surface 15, and a bottom surface 17.
- the land surface 13 is provided along the cutting edge 9. That is, the land surface 13 is located on the outer periphery of the upper surface 3 and is connected to the cutting edge 9.
- a cutting edge 9 is formed at the intersection of the land surface 13 and the side surface 7.
- the land surface 13 is provided to increase the strength of the cutting edge 9.
- the cutting edge 9 is formed at the intersection of the rake surface 15 and the side surface 7.
- the rake face 15 located on the inner side of the land surface 13 is an inclined surface whose height decreases toward the center.
- the inclination angle of the rake face 15 is larger than the inclination angle of the land face 13.
- the strength of the cutting edge 9 can be increased by having the land surface 13 having an inclination angle smaller than the inclination angle of the rake face 15.
- tilt angle means the angle comprised by the straight line orthogonal to the central axis X in the cross section containing the central axis X, and the object surface.
- the width of the land surface 13 indicated by the distance between the outer periphery of the upper surface 3 and the outer periphery of the rake face 15 is appropriately set depending on the cutting conditions, but is set within a range of 1 mm or less, for example.
- the rake face 15 is located inside the land face 13.
- the rake face 15 has a role of scooping up the chips cut by the cutting edge 9. Therefore, chips of the work material flow so as to travel along the surface of the rake face 15.
- the rake face 15 is inclined so that the height from the lower face 5 decreases as the distance from the land face 13 increases, in order to scoop off chips well.
- the rake face 15 is an inclined surface whose height decreases toward the center of the upper surface 3.
- the width of the rake face 15 indicated by the distance between the outer periphery of the rake face 15 and the inner periphery of the rake face 15 is appropriately set according to the cutting conditions.
- the rake face 15 in the present embodiment includes a first rake face 19 provided along the land face 13 and a second rake face 19 located on the inner side of the first rake face 19. And a rake face 21. That is, the second rake face 21 is located between the first rake face 19 and the bottom face 17. The inclination angle of the second rake face 21 is larger than the inclination angle of the first rake face 19.
- the inclination angle of the first rake face 19 and the inclination angle of the second rake face 21 in the present embodiment are kept constant, respectively. Therefore, a part of the rake face 15 configured with a constant inclination angle is partially cut out along the bottom face 17 at a constant interval.
- the notched part constitutes the second rake face 21, and the part of the rake face 15 other than the part constituting the second rake face 21 constitutes the first rake face 19. Since the inclination angle of the first rake face 19 and the inclination angle of the second rake face 21 are kept constant, the portion of the rake face 15 where the inclination angle changes is the first rake face 19 and the second rake face 19. This can be determined as a boundary with the rake face 21.
- the distance between the inner periphery of the first rake face 19 and the outer periphery of the upper surface 3 periodically increases and decreases when viewed from above. That is, the inner periphery of the first rake face 19 is corrugated with the outer periphery of the upper surface 3 as a reference.
- the inner periphery of the first rake face 19 may be rephrased as a boundary between the first rake face 19, the second rake face 21, and the bottom face 17.
- the second rake face 21 is provided in a corrugated valley portion on the inner periphery of the first rake face 19.
- the boundary between the entire rake face 15 constituted by the first rake face 19 and the second rake face 21 and the bottom face 17 is the top face 3 in the same way as the inner periphery of the first rake face 19 when viewed from above. It becomes a wave type on the basis of the outer periphery.
- a portion having a large interval between the outer periphery of the upper surface 3 and the inner periphery of the first rake face 19 is defined as a wavy “mountain” part on the first rake face 19.
- a portion having a small interval between the outer periphery of the upper surface 3 and the inner periphery of the first rake face 19 is defined as a corrugated “valley” portion of the first rake face 19.
- the surface 15 has a plurality of first portions 23 and a plurality of second portions 25 provided alternately along the bottom surface 17.
- the plurality of second portions 25 are the plurality of second rake faces 21. The angle of inclination is larger than that of the first portion 23, and the region is recessed on the rake face.
- the cutting insert 1 of this embodiment has the 8 1st site
- the rake face 15 has a plurality of first portions 23 and a plurality of second portions 25. Therefore, at the time of cutting of the work material 201, the possibility that the chips contact the first part 23 and the second part 25 can be reduced. That is, the area of the rake face 15 where the chips come into contact can be reduced. Therefore, it is possible to reduce the amount of heat generated when the chips rub against the rake face 15. Further, since the surface area of the rake face 15 can be increased, heat radiation from the rake face 15 can be promoted.
- the cooling fluid is retained in the second portion 25 because the second portion 25 has a relatively large inclination angle. It becomes easy. Therefore, cooling of the cutting insert 1 by a cooling fluid can be promoted.
- the entire inner periphery of the rake face 15 is not formed by the second part 25, but the rake face 15 is provided alternately along the bottom face 17 and the plurality of first parts 23 and A second portion 25 is provided. Therefore, it is suppressed that the intensity
- the inclination angle of the first rake face 19 and the second rake face 21 is indicated by an angle formed between the lower face 5 and the rake face 15 in a cross section perpendicular to each rake face 15.
- the inclination angle can be measured also by the angle formed by the lower surface 5 and the rake surface 15 in the cross section including the central axis X. What is necessary is just to set the inclination-angle of the 1st rake face 19 in the range below 50 degrees, for example.
- the inclination angle of the second rake face 21 may be set to be larger than the inclination angle of the first rake face 19 within a range of, for example, 70 ° or less.
- the inclination angle of the first rake face 19 and the inclination angle of the second rake face 21 are kept constant.
- the rake face 15 only needs to have a convex first part 23 and a concave second part 25 provided alternately along the bottom face 17. Therefore, when viewed in cross section, the first rake face 19 and the second rake face 21 may be configured by a plurality of regions having different inclination angles.
- the lower ends of the first rake face 19 and the second rake face 21 are partially concavely curved so that the first rake face 19 and the second rake face 21 and the bottom face 17 are smoothly connected. It may be.
- the bottom surface 17 is located inside the rake surface 15.
- the bottom surface 17 in the cutting insert 1 of this embodiment is a flat surface perpendicular to the central axis X. Therefore, the boundary between the rake face 15 corresponding to the inner periphery of the rake face 15 and the bottom face 17 is perpendicular to the central axis X corresponding to the area inclined to the rake face 15 on the upper face 3 and the bottom face 17. Therefore, it can be judged by the boundary with the flat region.
- the opening on the upper surface side of the through hole 11 is located in the center of the bottom surface 17.
- the upper surface 3 in this embodiment is comprised by the land surface 13, the rake face 15, and the bottom face 17, it is not restricted to such a structure.
- a breaker surface that is inclined so that the height from the lower surface 5 increases as the distance from the land surface 13 increases may be provided inside the bottom surface 17.
- the first portion 23 in the rake face 15 has a first recess 27 provided along the cutting edge 9. Yes. Since the cooling fluid is likely to stay in the second portion 25, the portion of the cutting blade 9 located outside the second portion 25 is efficiently cooled. On the other hand, the cooling efficiency may be insufficient at the portion of the cutting blade 9 located outside the first portion 23.
- the flow of the cooling fluid is stagnated in the first concave portion 27 and is likely to stay. Therefore, it is possible to efficiently cool the portion of the cutting blade 9 located outside the first portion 23. Thereby, the whole cutting blade 9 is cooled stably.
- FIGS. 5 to 8 are cross-sectional views in a cross section parallel to the central axis X. 6 to 8, in order to facilitate understanding of the shape of the rake face when viewed in cross section, the detailed shape of the rake face in a portion excluding the cross section is not shown.
- the 1st recessed part 27 has reached each of a pair of 2nd site
- the first recess 27 may be set to have a width of about 0.2 to 2 mm and a depth of about 0.05 to 0.6 mm, for example.
- the width means a width in a direction orthogonal to the direction along the cutting edge 9 when viewed from above.
- part 23 is connected to the 1st recessed part 27 between the land surface 13 and the 1st recessed part 27 in addition to the 1st recessed part 27.
- the second recess 29 is provided.
- a wide area of the first portion 23 can be efficiently obtained as compared with the case where one first concave portion 27 is provided.
- the cooling effect can be further enhanced by providing a plurality of second recesses 29 that can be cooled.
- the second recess 29 may be set to have a width of about 0.2 to 1 mm and a depth of about 0.05 to 0.6 mm.
- two first concave portions 29 are provided for one first concave portion 27, but the number of the second concave portions 29 is not limited to this.
- the configuration may be such that three first recesses 29 are provided for one first recess 27.
- the portion of the rake face 15 that is closer to the land surface 13 is more likely to generate heat. Therefore, when the 2nd recessed part 29 is extended toward the land surface 13 from the 1st recessed part 27, the location which a big heat
- the second recess 29 is preferably separated from the land surface 13, and the distance between the land surface 13 and the second recess 29 may be set to about 0.2 to 1 mm.
- the width of the second recess 29 is increased from the first recess 27 toward the land surface 13 as in the present embodiment.
- the portion of the rake face 15 closer to the land surface 13 is more likely to generate heat. This is because the portion of the second recess 29 close to the land surface 13 is relatively large, so that a portion where large heat is likely to be generated can be efficiently cooled.
- the “width” in the above means the width in a direction orthogonal to the direction from the first recess 27 toward the land surface 13 when viewed from above.
- the cutting insert 1 shown in FIG. 3 has the 1st recessed part 27, it is not restricted to such a form in particular.
- a plurality of first recesses 27 may be provided.
- the cross-sectional view shown in FIG. 12 is a cross-sectional view in a cross section parallel to the central axis X.
- FIG. 12 in order to facilitate understanding of the shape of the rake face 15 when viewed in cross section, the detailed shape of the rake face 15 in a portion excluding the cross section is omitted.
- a cutting edge 9 is formed at the intersection of the upper surface 3 and the side surface 7.
- the cutting blade 9 since the upper surface 3 is substantially circular, the cutting blade 9 has an annular shape.
- the cutting insert 1 of this embodiment has eight first portions 23 and eight second portions 25, respectively. If this region deteriorates as a result of performing cutting for a long time using the region corresponding to one adjacent first region 23 and second region 25 in the cutting blade 9, This area may be used.
- the cutting insert 1 may be rotated 45 ° with respect to the central axis X and attached to the holder again.
- the eight first parts 23 and the second parts 25 corresponding to the first part 23 and the second part 25 different from the one adjacent first part 23 and second part 25 described above
- the region of the cutting edge 9 to be used can be used for cutting the work material.
- the intersection line between the upper surface 3 and the side surface 7 is not a strict line shape due to the intersection of the two surfaces.
- the intersection line between the upper surface 3 and the side surface 7 is sharpened at an acute angle, the durability of the cutting blade 9 is lowered. Therefore, so-called honing processing may be performed so that a portion where the upper surface 3 and the side surface 7 intersect each other has a slightly curved shape.
- a so-called positive type configuration in which the cutting edge 9 is formed only at the intersection of the upper surface 3 and the side surface 7 and the side surface 7 is inclined with respect to the upper surface 3 and the lower surface 5.
- it is not limited to such a form.
- the side surface 7 is perpendicular to the upper surface 3 and the lower surface 5, and the cutting edge 9 is formed at the intersecting portion between the lower surface 5 and the side surface 7 in addition to the intersecting portion between the upper surface 3 and the side surface 7. It may be a negative type configuration.
- the lower surface 5 may have a land surface, a rake surface, and a bottom surface in the same manner as the upper surface 3.
- the cutting tool 101 of the present embodiment has a rotation center axis Y, a holder 103 having a plurality of insert pockets 107 on the front end side of the outer periphery, and the above-described insert pockets 107 mounted respectively.
- a cutting insert 1 is provided.
- the holder 103 has a substantially rotating body shape that rotates about the rotation center axis Y.
- a plurality of insert pockets 107 are provided at equal intervals on the outer peripheral surface on the tip side of the holder 103.
- the insert pocket 107 is a part to which the cutting insert 1 is mounted, and is open on the outer peripheral surface and the front end surface of the holder 103.
- the insert pocket 107 has a seating surface that opposes the rotation direction and a plurality of constraining side surfaces that are positioned in a direction in which the seating surface intersects. These seating surfaces and restraining side surfaces abut on the cutting insert 1.
- the cutting insert 1 is mounted in a plurality of insert pockets 107 provided in the holder 103.
- the plurality of cutting inserts 1 are mounted such that the cutting edge 9 protrudes outward from the outer peripheral surface, that is, to the side of the holder 103.
- the plurality of cutting inserts 1 are mounted on the holder 103 such that a part of the cutting edge 9 protrudes from the outer peripheral surface of the holder 103.
- the cutting insert 1 is fixed to the insert pocket 107 with a screw 105. That is, the screw 105 is inserted into the through hole of the cutting insert 1, the tip of the screw 105 is inserted into a screw hole (not shown) formed in the insert pocket 107, and the screw parts are screwed together, thereby cutting the cutting insert. 1 is fixed to the holder 103.
- the cutting insert 1 is mounted on the holder 103 so that the cutting edge 9 protruding outward from the outer peripheral surface has a positive axial rake angle and a negative radial rake angle.
- the radial rake angle is negative, but it may be positive depending on the processing conditions.
- the holder 103 is provided with a hole portion 109 penetrating from the rear end surface to the outer peripheral surface on the front end side.
- the hole 109 opens near the insert pocket 107 on the outer peripheral surface on the distal end side.
- a cooling fluid is supplied from the outside toward the cutting insert 1 through the hole 109. With this cooling fluid, heat generated during cutting can be efficiently radiated.
- steel, cast iron or the like can be used.
- steel having high toughness among these members it is preferable to use steel having high toughness among these members.
- the cut workpiece is produced by cutting a workpiece.
- the manufacturing method in the present embodiment includes the following steps. That is, (1) a step of rotating the cutting tool 101 represented by the above embodiment; (2) a step of bringing the cutting edge 9 in the rotating cutting tool 101 into contact with the work material 201; (3) a step of separating the cutting tool 101 from the work material 201; It has.
- the cutting tool 101 is rotated relatively close to the work material 201.
- the cutting blade 9 of the cutting tool 101 is brought into contact with the work material 201 to cut the work material 201.
- the cutting tool 101 is relatively moved away from the work material 201.
- the work material 201 is fixed and the cutting tool 101 is approached. 14 and 15, the work material 201 is fixed and the cutting tool 101 is rotated. In FIG. 16, the work material 201 is fixed and the cutting tool 101 is moved away. Note that, in the cutting in the manufacturing method of the present embodiment, the work material 201 is fixed and the cutting tool 101 is moved in each step, but it is naturally not limited to such a form.
- the work material 201 may be brought close to the cutting tool 101 in the step (1).
- the work material 201 may be moved away from the cutting tool 101.
- the state in which the cutting tool 101 is rotated and the cutting blade 9 of the cutting insert 1 is brought into contact with a different part of the work material 201 may be repeated.
- the cutting insert 1 may be rotated with respect to the central axis X of the through hole 11 to use an unused area in the cutting blade 9.
- representative examples of the material of the work material 201 include carbon steel, alloy steel, stainless steel, cast iron, and non-ferrous metal.
Abstract
Description
次に、本発明の一実施形態の切削工具101について図面を用いて説明する。
次に、本発明の一実施形態の切削加工物の製造方法について図面を用いて説明する。
(1)上記実施形態に代表される切削工具101を回転させる工程と、
(2)回転している切削工具101における切刃9を被削材201に接触させる工程と、
(3)切削工具101を被削材201から離す工程と、
を備えている。
3・・・上面
5・・・下面
7・・・側面
9・・・切刃
11・・・貫通孔
13・・・ランド面
15・・・すくい面
17・・・底面
19・・・第1のすくい面
21・・・第2のすくい面
23・・・第1の部位
25・・・第2の部位
27・・・第1の凹部
29・・・第2の凹部
101・・・切削工具
103・・・ホルダ
105・・・ネジ
107・・・インサートポケット
109・・・孔部
201・・・被削材
Claims (8)
- 上面と、
下面と、
前記上面および前記下面のそれぞれに接続された側面と、
前記上面と前記側面との交線部に位置する切刃とを備えた切削インサートであって、
前記上面は、前記切刃に沿って設けられたランド面、該ランド面よりも内側に位置して、該ランド面から離れるに従って前記下面からの高さが低くなるよう傾斜したすくい面および該すくい面よりも内側に位置する底面を有し、
前記すくい面は、前記底面に沿って交互に設けられた、複数の第1の部位および複数の第2の部位を有し、
該複数の第2の部位は、前記複数の第1の部位よりも傾斜角が大きく、かつ前記すくい面において窪んだ領域であって、
前記第1の部位は、前記切刃に沿って設けられた第1の凹部を有していることを特徴とする切削インサート。 - 前記第1の凹部は、前記第1の部位に隣接する一対の前記第2の部位のそれぞれに達していることを特徴とする請求項1に記載の切削インサート。
- 前記第1の部位は、前記ランド面と前記第1の凹部との間に該第1の凹部に接続された第2の凹部を有していることを特徴とする請求項1に記載の切削インサート。
- 前記第2の凹部は、前記第1の凹部から前記ランド面に向かうに従って幅が大きくなっていることを特徴とする請求項3に記載の切削インサート。
- 前記第1の部位は、複数の前記第2の凹部を有していることを特徴とする請求項3または4に記載の切削インサート。
- 前記第2の凹部は、前記ランド面から離れていることを特徴とする請求項3に記載の切削インサート。
- 外周の先端側に複数のインサートポケットを有するホルダと、
前記切刃が前記ホルダの側方に突出するように前記インサートポケットに装着された、請求項1~6のいずれか1つに記載の切削インサートとを具備した切削工具。 - 請求項7に記載の切削工具を回転させる工程と、
回転している前記切削工具における前記切刃を被削材に接触させる工程と、
前記切削工具を前記被削材から離す工程とを備える切削加工物の製造方法。
Priority Applications (4)
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EP13858790.2A EP2926933B1 (en) | 2012-11-27 | 2013-11-27 | Cutting insert, cutting tool, and cut workpiece manufacturing method |
CN201380060654.7A CN104797368B (zh) | 2012-11-27 | 2013-11-27 | 切削镶刀、切削工具以及切削加工物的制造方法 |
US14/443,419 US10005142B2 (en) | 2012-11-27 | 2013-11-27 | Cutting insert, cutting tool, and method of producing machined product |
JP2014549861A JP5944527B2 (ja) | 2012-11-27 | 2013-11-27 | 切削インサート、切削工具および切削加工物の製造方法 |
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EP (1) | EP2926933B1 (ja) |
JP (1) | JP5944527B2 (ja) |
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JP6315350B2 (ja) * | 2015-10-23 | 2018-04-25 | 住友電工ハードメタル株式会社 | 回転切削工具 |
US11241743B2 (en) | 2017-06-29 | 2022-02-08 | Kyocera Corporation | Coated tool, cutting tool, and method for manufacturing machined product |
CN107790755B (zh) * | 2017-11-23 | 2024-03-26 | 炎陵欧科亿数控精密刀具有限公司 | 一种用于切槽、切断和外圆仿形加工的切削刀片 |
US20190263014A1 (en) * | 2018-02-27 | 2019-08-29 | Jtekt Corporation | Cutting method and cutting tool |
USD1006075S1 (en) * | 2021-12-08 | 2023-11-28 | Green Manufacturing, Inc. | Tree stump grinding tooth |
CN117583655B (zh) * | 2024-01-18 | 2024-03-29 | 常州市福尔特工具有限公司 | 一种用于大平面加工的高效铣削盘铣刀 |
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- 2013-11-27 CN CN201380060654.7A patent/CN104797368B/zh active Active
- 2013-11-27 WO PCT/JP2013/081892 patent/WO2014084254A1/ja active Application Filing
- 2013-11-27 EP EP13858790.2A patent/EP2926933B1/en active Active
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Also Published As
Publication number | Publication date |
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EP2926933A1 (en) | 2015-10-07 |
JPWO2014084254A1 (ja) | 2017-01-05 |
US10005142B2 (en) | 2018-06-26 |
US20160129507A9 (en) | 2016-05-12 |
CN104797368A (zh) | 2015-07-22 |
JP5944527B2 (ja) | 2016-07-05 |
EP2926933A4 (en) | 2016-04-13 |
US20150298226A1 (en) | 2015-10-22 |
CN104797368B (zh) | 2017-06-09 |
EP2926933B1 (en) | 2019-01-09 |
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