WO2009096516A1 - Insert de coupe, outil de coupe et méthode de coupe - Google Patents

Insert de coupe, outil de coupe et méthode de coupe Download PDF

Info

Publication number
WO2009096516A1
WO2009096516A1 PCT/JP2009/051566 JP2009051566W WO2009096516A1 WO 2009096516 A1 WO2009096516 A1 WO 2009096516A1 JP 2009051566 W JP2009051566 W JP 2009051566W WO 2009096516 A1 WO2009096516 A1 WO 2009096516A1
Authority
WO
WIPO (PCT)
Prior art keywords
cutting
cutting edge
concave
corner
linear
Prior art date
Application number
PCT/JP2009/051566
Other languages
English (en)
Japanese (ja)
Inventor
Shin Deguchi
Original Assignee
Kyocera Corporation
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kyocera Corporation filed Critical Kyocera Corporation
Priority to JP2009551594A priority Critical patent/JP5227342B2/ja
Publication of WO2009096516A1 publication Critical patent/WO2009096516A1/fr

Links

Images

Classifications

    • 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
    • B23C5/06—Face-milling cutters, i.e. having only or primarily a substantially flat cutting surface
    • 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
    • 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
    • B23C2200/0422—Octagonal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C2200/00—Details of milling cutting inserts
    • B23C2200/12—Side or flank surfaces
    • B23C2200/125—Side or flank surfaces discontinuous
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C2200/00—Details of milling cutting inserts
    • B23C2200/20—Top or side views of the cutting edge
    • B23C2200/203—Curved cutting edges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C2200/00—Details of milling cutting inserts
    • B23C2200/20—Top or side views of the cutting edge
    • B23C2200/205—Discontinuous cutting edges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C2200/00—Details of milling cutting inserts
    • B23C2200/24—Cross section of the cutting edge
    • B23C2200/243—Cross section of the cutting edge bevelled or chamfered

Definitions

  • the present invention relates to a cutting insert, a cutting tool, and a cutting method used for processing a metal member.
  • the cutting insert used for a cutting tool for milling metal parts or the like, for example, one disclosed in Japanese Patent Application Laid-Open No. 2007-260788 is known.
  • the cutting insert has a plate shape with a substantially octagonal shape when viewed from above.
  • a cutting edge is formed along each side of the upper surface.
  • Each cutting edge includes a linear cutting edge provided on one corner side, a linear cutting edge provided on the other corner side, and a concave cutting edge disposed between the two linear cutting edges, ,have.
  • the concave cutting blade is formed in a concave shape in a side view.
  • the axial rake at the cutting edge can be set to a large positive value. Therefore, the biting of the cutting edge is improved at the start of cutting.
  • the above-mentioned cutting insert is attached to the holder and constitutes a cutting tool.
  • a concave cutting edge along one side and a linear cutting edge adjacent to the one side and positioned on the tip side of the holder are used.
  • the linear cutting blades that are adjacent to each other with the corner interposed therebetween and that extend along the other sides are used as a wiping blade. Thereby, the processing surface of a workpiece can be smoothed.
  • This cutting insert can also be used for both right hand and left hand cutting tools, i.e. both right and left rotating cutting tools. . Thereby, even if it attaches to any of the cutting tool of right rotation and left rotation, the processed surface of a workpiece can be smoothed with the linear cutting blade used as a wiping edge.
  • the cutting insert has a problem that sufficient cutting performance cannot be obtained in a wide range of cutting depths.
  • An object of the present invention is to provide a cutting insert and a cutting tool that can maintain good cutting performance in a wide range of depth of cut and can be used for both right- and left-turning cutting tools, and a cutting method. It is.
  • the cutting insert according to the embodiment of the present invention includes at least two adjacent corners, a first side located between the two corners, a second side extending from one corner, and a third side extending from the other corner.
  • An upper surface having a side, a lower surface corresponding to the upper surface, and a side surface located between the upper surface and the lower surface.
  • the cutting insert has a cutting edge portion provided along the first side, the second side, and the third side, and the upper surface is inclined so as to approach the lower surface as the distance from the cutting edge portion increases. It has a rake face.
  • the cutting blade portion is disposed between a plurality of linear cutting blades disposed on both sides of each corner across the respective corners and the adjacent linear cutting blades provided along the first side, A concave cutting edge that is concave in a side view. And the rake angle of the rake face becomes maximum in the vicinity of both ends of the concave cutting edge, and becomes smaller from both ends of the concave cutting edge toward the center of the concave cutting edge and each corner.
  • a cutting tool according to an embodiment of the present invention has the cutting insert attached to a holder.
  • a cutting method is a method of cutting a work material using the cutting tool, and includes the following steps (i) to (iv).
  • the cutting insert the cutting tool, and the cutting method, good cutting performance can be maintained under a wide range of cutting conditions regardless of the depth of cut. Moreover, the cutting insert can be used for both right and left cutting tools.
  • FIG. 2 is a cross-sectional view taken along line AA in FIG.
  • FIG. 3 is a sectional view taken along line BB in FIG.
  • FIG. 2 is a sectional view taken along line CC in FIG. 1.
  • FIG. 2 is a sectional view taken along line DD in FIG.
  • FIG. 2 is a sectional view taken along line EE in FIG. 1.
  • FIG. 5 is a sectional view taken along line FF in FIG. 1.
  • FIG. 2 is a sectional view taken along line GG in FIG. 1.
  • FIG. 1 It is a perspective view which shows the cutting tool with which the cutting insert shown in FIG. 1 was attached. It is process drawing which shows the cutting method which concerns on one Embodiment of this invention. It is process drawing which shows the cutting method which concerns on one Embodiment of this invention. It is process drawing which shows the cutting method which concerns on one Embodiment of this invention.
  • a cutting insert (hereinafter referred to as an insert) 1 has a plate shape having a substantially regular octagonal shape when viewed from above, and includes an upper surface 20 and the upper surface. 20, and a side surface 21 located between the upper surface 20 and the lower surface 40.
  • a cutting edge 3 is formed at the intersection between the upper surface 20 and the side surface 21.
  • a breaker surface 20 a extending from the cutting blade portion 3 side to the inside of the insert 1 is formed.
  • the "inside of the insert 1" here means the attachment hole 20h side formed in the approximate center of the boss surface 20g described below.
  • the upper surface 20 is formed with a boss surface 20g adjacent to the breaker surface 20a and extending inside the insert 1.
  • the boss surface 20 g is substantially parallel to the lower surface 40.
  • the insert 1 has a 45-degree rotationally symmetric shape with respect to the central axis of the mounting hole 20h. Thereby, when the cutting edge part 3 being used is worn, the insert 1 can be rotated 45 degrees and the unused cutting edge part 3 can be used, which is economical.
  • a land 20b is formed over the entire circumference of the insert 1 between the breaker surface 20a and the cutting edge portion 3. As shown in FIGS. 4 to 9, the land 20b has an inclined surface 20c and a flat surface 20d.
  • the inclined surface 20c is adjacent to the cutting edge 3 and extends inward and upward of the insert 1 at an inclination angle of about 5 to 15 degrees with respect to the lower surface 40.
  • the flat surface 20d is adjacent to the inclined surface 20c and substantially parallel to the lower surface 40.
  • the breaker surface 20a has a rake surface 20e and a rising surface 20f.
  • the rake face 20 e is inclined so as to approach the lower face 40 as it is separated from the cutting edge portion 3.
  • the rake face 20e is disposed adjacent to the land 20b.
  • the “rake face” refers to a face that is located at the insert inner end of the land 20b and that extends from the land 20b to the inside and the lower face side of the insert 1.
  • the “rake surface” refers to a surface that is located at the insert inner end portion of the cutting blade portion and is inclined from the cutting blade portion to the inner side and the lower surface side of the insert.
  • the rising surface 20f is positioned on the inner side of the insert 1 than the rake surface 20e, and extends on the inner side and the upper side of the insert 1.
  • the insert inner end of the rising surface 20f is adjacent to the boss surface 20g described above.
  • the cutting blade portion 3 is paired with each other with the concave cutting blade 30 positioned between two adjacent corners on the upper surface 20, the corner cutting blade 31 positioned at each corner, and the corner cutting blade 31 interposed therebetween. And a straight cutting edge 32.
  • the both ends of the concave cutting blade 30 are adjacent to the linear cutting blade 32, respectively.
  • the corner cutting edge 31, the linear cutting edge 32, and the concave cutting edge 30 will be described by taking the corners 5a and 5b shown in FIGS. 1 to 3 as examples of the two adjacent corners.
  • the upper surface 20 includes a first side 6 located between the corners 5a and 5b, a second side 7 extending from the corner 5a in the direction opposite to the first side 6, and a second side 7 extending from the corner 5b in the direction opposite to the first side 6. 3 sides 8.
  • the cutting edge portion 3 is formed along the first side 6, the second side 7, and the third side 8.
  • the cutting blade portion 3 includes a plurality of linear cutting blades 32,..., 32 arranged on both sides of the corners 5a and 5b with the corners 5a and 5b interposed therebetween, specifically, four linear cutting blades 32, ..., 32, and a concave cutting edge 30 disposed between adjacent linear cutting edges 32, 32 provided along the first side 6.
  • the first linear cutting blade 32 that extends along the first side 6 and is positioned on the corner 5 a side with respect to the concave cutting blade 30 is the first.
  • the linear cutting edge 32a which is along the first side 6 and located on the corner 5b side with respect to the concave cutting edge 30, is defined as a second linear cutting edge 32b.
  • the one end and the other end of the concave cutting edge 30 are provided adjacent to the first linear cutting edge 32a and the second linear cutting edge 32b, respectively.
  • both the first linear cutting blade 32a and the second linear cutting blade 32b are located on a virtual straight line connecting between the corners 5a and 5b.
  • the first linear cutting blade 32 a and the second linear cutting blade 32 b are formed substantially parallel to the lower surface 40. And the height with respect to the lower surface 40 of the 1st linear cutting blade 32a and the height with respect to the lower surface 40 of the 2nd linear cutting blade 32b are substantially the same. Therefore, the first linear cutting blade 32a and the second linear cutting blade 32b are both located on a virtual straight line connecting the corners 5a and 5b in the side view. Note that “substantially the same” as used herein may be substantially the same, and may include an error range of ⁇ 0.2 mm.
  • the concave cutting blade 30 is concave in the side view shown in FIG. Specifically, of the concave cutting blade 30, the height of the connecting portion between the first linear cutting blade 32a and the second linear cutting blade 32b is the highest, and the center height is the lowest.
  • the “height” here refers to a height from the flat surface including the lower surface 40 in a direction substantially perpendicular to the flat surface when the lower surface 40 is placed on a flat surface. Therefore, “the center height is the lowest” means that the lowermost portion 30 a having the lowest height from the lower surface 40 of the concave cutting blade 30 is provided at the center of the concave cutting blade 30. .
  • the first linear cutting blade 32a is disposed closer to the holder tip than the concave cutting blade 30, and the second linear cutting blade 32b is the concave cutting blade 30.
  • the first side 6, the second side 7, and the third side 8 are disposed so that the corner 5a is disposed closer to the tip of the holder than the corner 5b.
  • the corner cutting edge 31 and the first linear cutting edge 32a located at the corner 5a are used for cutting, and at the time of medium cutting or deep cutting, the concave cutting edge 30 is also used for cutting. It is done.
  • side 7 adjacent to the corner cutting edge 31 used for cutting is used as a wiping edge.
  • the second linear cutting blade 32b is disposed closer to the tip of the holder than the concave cutting blade 30 is. That is, the corner 5b is disposed closer to the tip of the holder than the corner 5a. For this reason, the 2nd linear cutting blade 32b is used for cutting instead of the 1st linear cutting blade 32a. Then, the linear cutting blade 32 formed along the third side 8 is used as a wiping blade.
  • the insert 1 has a 45-degree rotationally symmetric shape with respect to the central axis of the mounting hole 20h. Therefore, two adjacent corners other than the corners 5a and 5b also have the same shape as the corners 5a and 5b.
  • these cutting blades are a total of 8 sets along each side of the upper surface 20. Is formed. 1 and FIG. 2 show one set of them, the other side has the same configuration.
  • the rake angle of the rake face 20 e is maximum in the vicinity of both ends of the concave cutting edge 30. Further, the rake angle of the rake face 20e decreases from both ends of the concave cutting edge 30 toward the center (lowermost part 30a) of the concave cutting edge 30 and the corners 5a and 5b.
  • the insert can be used for both right-handed rotation and left-handed cutting tools, and the following effects (a) to (d) can be obtained in terms of the processing form.
  • the insert 1 can achieve the effects (a) to (d) described above, it is excellent in a wide range of depth of cut when it is attached to any of the right rotation and left rotation cutting tools. Cutting performance can be maintained.
  • the “rake angle” means an angle formed by the tangent line of the rake face passing through the connecting portion between the rake face 20 e and the land 20 b and the lower face 40 in the cross section passing through the rake face 20 e of the insert 1.
  • the “cross section” means a cross section perpendicular to the virtual straight line connecting the adjacent corners 5 a and 5 b and passing through the cutting edge portion 3 and perpendicular to the lower surface 40.
  • the angle formed by the tangent line of the rake surface passing through the connecting portion between the rake surface and the cutting edge portion and the lower surface of the insert is referred to as the rake angle.
  • the tangent line is shown as the MM line, and the angle ⁇ formed by the MM line and the LL line is a rake angle.
  • the LL line has the lowest point from the lower surface 40 of the rake face 20e (hereinafter, this point is the lowest point 25 of the rake face 20e in each section. And a line parallel to the lower surface 40.
  • the rake angles from the AA line cross section to the FF line cross section shown in FIGS. 4 to 9 are ⁇ A to ⁇ F for each cross section.
  • the “near both ends of the concave cutting blade” means within a range of 1 mm centering on both ends of the concave cutting blade. If the rake angle described above is maximal within the range, the above-described effects are exhibited. be able to.
  • the straight line I, straight line J, and straight line K shown in FIG. 3 are perpendicular to the first straight cutting edge 32a and the second straight cutting edge 32b, respectively.
  • the straight line I is the connecting portion between the first straight cutting edge 32a and the concave cutting edge 30, the straight line J is the lowermost part 30a of the concave cutting edge 30, and the straight line K is the concave cutting edge 30 and the second straight cutting edge 32b.
  • a straight line I indicates a boundary between the first inclined region 51 and the second inclined region 52 among the first inclined region 51 to the fourth inclined region 54 described below.
  • a straight line J indicates a boundary between the second inclined region 52 and the third inclined region 53.
  • a straight line K indicates a boundary between the third inclined region 53 and the fourth inclined region 54.
  • the rake face 20 e described above includes a first inclined region 51, a second inclined region 52, a third inclined region 53, and a fourth inclined region 54. These four regions are sequentially arranged along the first side 6 of the upper surface 20 from the corner 5a adjacent to the first linear cutting edge 32a to the corner 5b adjacent to the second linear cutting edge 32b. Has been placed.
  • the first inclined region 51 is arranged corresponding to the first linear cutting blade 32a.
  • region 52 is arrange
  • region 53 is arrange
  • region 54 is arrange
  • FIG. 1 shows the BB to FF lines perpendicular to the virtual straight line connecting the corners 5a and 5b when viewed from above.
  • the cross section including the first inclined region 51 is a cross section taken along line BB shown in FIG. 5 and a cross section taken along line CC shown in FIG.
  • the cross section including the second inclined region 52 is a cross section taken along the line DD and the line EE shown sequentially in FIGS.
  • the cross section taken along the line FF is a cross section passing through the lowermost portion 30a of the concave cutting blade 30. Accordingly, the cross section taken along the line FF is a cross section passing through the boundary between the second inclined region 52 and the third inclined region 53.
  • the insert 1 has a symmetrical shape with respect to a plane passing through the cross section taken along the line FF. For this reason, sectional views of the third inclined region and the fourth inclined region are omitted.
  • 4 is a cross section passing through the corner cutting edge 31, and is along a bisector H in a top view of the corner 5a.
  • the following (1) to (4) correspond to the first inclined region 51 to the fourth inclined region 54 in order.
  • the rake angle in the first inclined region 51 increases as it approaches the concave cutting edge 30 from the corner 5a. That is, as shown in FIGS. 4 to 6, in the corner cutting edge 31 located in the first inclined region 51 and the corner 5a, the rake angle ⁇ in the cross section is ⁇ A ⁇ B ⁇ C. In the first inclined region 51, the rake angle ⁇ B in the cross section close to the corner cutting edge 31 is smaller than the rake angle ⁇ C in the cross section close to the concave cutting edge 30.
  • ⁇ A is set to 3 ( ⁇ 1) degrees
  • ⁇ B is set to 3.5 ( ⁇ 1) degrees
  • ⁇ C is set to 7.3 ( ⁇ 1) degrees.
  • the rake angle ⁇ of the cross section at the boundary portion (straight line I) between the region 51 and the second inclined region 52 is 8 ( ⁇ 1) degrees. Therefore, the rake angle ⁇ in the cross section gradually increases from the connection portion with the corner cutting edge 31 toward the connection portion with the concave cutting edge 30.
  • the rake angle in the second inclined region 52 decreases from the first linear cutting edge 32a toward the lowermost part 30a of the concave cutting edge 30. That is, as shown in FIGS. 7 to 9, the rake angle ⁇ in the cross section of the second inclined region 52 is ⁇ D > ⁇ E > ⁇ F.
  • ⁇ D is set to 6.5 ( ⁇ 1) degrees
  • ⁇ E is set to 5.4 ( ⁇ 1) degrees
  • ⁇ F is set to 5 ( ⁇ 1) degrees.
  • the rake angle ⁇ of the cross section at the connecting portion (straight line I) between the first straight cutting edge 32a and the concave cutting edge 30 is 8 ( ⁇ 1) degrees. Therefore, the rake angle ⁇ in the cross section gradually decreases from the connecting portion (straight line I) between the first straight cutting edge 32a and the concave cutting edge 30 toward the lowermost portion 30a (straight line J) of the concave cutting edge 30. It has become.
  • the reduction in the thickness of the insert 1 that occurs as the height of the concave cutting blade 30 decreases can be mitigated. Therefore, the cutting edge strength of the concave cutting blade 30 and the rigidity of the insert 1 can be improved. As a result, it is possible to suppress the loss of the concave cutting edge 30 at the time of medium cutting using the concave cutting edge 30 or at the time of deep cutting.
  • the rake angle in the third inclined region 53 increases from the lowermost portion 30a of the concave cutting edge 30 toward the second linear cutting edge 32b. That is, the second inclined region 52 and the third inclined region 53 are symmetric with respect to the plane including the cross section taken along the line FF described above. Therefore, in the third inclined region 53, the rake angle ⁇ in the cross section gradually increases from the lowermost part 30a (straight line J) of the concave cutting edge 30 toward the connection part (straight line K) with the second straight cutting edge 32b. Is getting bigger.
  • the cutting edge of the concave cutting edge 30 can be sharpened from the lowermost part 30a of the concave cutting edge 30 toward the second linear cutting edge 32b.
  • the rake angle in the fourth inclined region 54 decreases from the concave cutting edge 30 toward the corner 5b. That is, the first inclined region 51 and the fourth inclined region 54 are symmetric with respect to the plane including the cross section taken along the line FF described above. Therefore, in the fourth inclined region 54, the rake angle ⁇ in the cross section gradually increases as it goes from the connection portion with the corner cutting edge 31 located in the corner 5b to the connection portion (straight line K) with the concave cutting edge 30. It has become.
  • the insert 1 when the insert 1 is attached to a clockwise cutting tool, good cutting performance can be maintained in a wide range of cutting depths. Also, when the insert 1 is attached to a counterclockwise cutting tool, the same effects can be achieved by the above-described configurations (2) to (4). That is, the insert 1 can maintain good cutting performance in a wide range of cutting depths when it is attached to either a right-turning or left-turning cutting tool.
  • ⁇ A ⁇ ⁇ F is not limited to the value of the above range, while maintaining the strength of the cutting edge of the cutting edge portion 3, from the viewpoint of reducing the cutting resistance during cutting, theta A ⁇ ⁇ F is desirably 25 degrees or less. Furthermore, it is more preferable that ⁇ A to ⁇ F be set to 15 degrees or less from the viewpoint of further increasing the strength of the cutting edge of the cutting edge portion 3.
  • the length of each of the first linear cutting edge 32a and the second linear cutting edge 32b is 10 to 30% with respect to the length of the cutting edge portion 3 along the first side 6.
  • the length of the concave cutting edge 30 is preferably 40 to 80% with respect to the length of the cutting edge portion 3 along the first side 6.
  • the concave cutting edge 30 is also formed in a concave shape in the top view shown in FIGS. Specifically, in a top view, the concave cutting blade 30 is provided so as to be positioned inside the insert 1 from the both ends toward the center.
  • the concave cutting blade 30 has a curved shape in a side view shown in FIG. Thereby, since the stress added to the concave cutting edge 30 is disperse
  • the height of the lowest point 25 of the rake face 20e in each of the cross sections shown in FIGS. 4 to 9 described above is in the region corresponding to the concave cutting edge 30 (second inclined region 52 and third inclined region 53). It is almost constant. That is, as shown in FIG. 2, the region 25A constituted by the lowest point 25 of the rake face 20e in each cross section is a region corresponding to the concave cutting blade 30 (second inclined region 52 and third inclined region 53). , The height from the lower surface 40 is the lowest and the height from the lower surface 40 is substantially constant.
  • the bottom Reference numeral 26 denotes an area extending corresponding to the concave cutting edge 30 and having the lowest height from the lower surface 40 of the rake face 20.
  • the insert 1 has such a bottom portion 26 and the concave cutting edge 30, the difference in height between the both ends of the concave cutting edge 30 and the lowest point 25 of the rake face 20e in the cross section passing through the both ends is a concave cutting edge. Compared to the difference in height between the lowermost point 30a of 30 and the lowest point 25 of the rake face 20e in the cross section passing through the lowermost part 30a.
  • substantially constant may be substantially constant as long as “substantially identical” described above, and may include an error range of ⁇ 0.2 mm.
  • the bottom portion 26 is provided along the concave cutting blade 30. That is, as shown in FIG. 3, the distance from the concave cutting edge 30 to the bottom portion 26 is substantially constant in a top view.
  • the length along the first side 6 of the bottom portion 26 is 50 to 70% of the length along the first side 6 of the second inclined region 52 and the third inclined region 53 as shown in FIG. It is. Thereby, chips can be stably drawn into the breaker surface 20a. Therefore, the function of curling the chips is improved, and the chip discharge performance is improved.
  • the rake angle of the rake face 20e is maximal in the vicinity of both ends of the concave cutting edge 30, and is minimal at the corners 5a and 5b.
  • the slender chips generated when using the cutting edge portion 3 from the corner cutting edge to the end of the concave cutting edge 30 located on the corner cutting edge side for cutting are drawn into the breaker surface 20a and curled. Can be made. As a result, chip disposal can be improved.
  • a first flank 21 a adjacent to the cutting edge portion 3 is formed on the side surface 21.
  • the first flank 21a extends at an incline at a predetermined inclination angle (flank angle) inside the insert 1 as it goes from the cutting edge 3 toward the lower surface.
  • a second flank 21b connected to the first flank 21a is formed below the first flank 21a.
  • the second flank 21b extends at an inclination angle larger than that of the first flank 21a on the inner side of the insert 1 toward the lower surface side.
  • the height of the connecting portion 21c between the first flank 21a and the second flank 21b is substantially constant over the entire circumference of the insert 1.
  • the cutting tool 10 has a holder 11 that rotates about an axis N.
  • the holder 11 has a plurality of recesses 12 formed on the outer periphery on the tip side. These recesses 12 are open toward the outside of the holder 11.
  • the surface located in the back side of the rotation direction O among the surfaces which form the recessed part 12 is used as the insert mounting seat 13.
  • a screw hole (not shown) is formed in the insert mounting seat 13.
  • the cutting tool 10 is used as a milling tool in which, for example, the axial rake is set to about 15 degrees and the radial rake is set to about 5 degrees.
  • the corner cutting blade 31, the first linear cutting blade 32 a, and the concave cutting blade 30 that are positioned in the corner 5 a are used in order from the tip end side of the holder 11.
  • side 7 adjacent to the corner cutting edge 31 used for cutting is used as a wiping edge. Thereby, the processing surface of a workpiece can be smoothed.
  • the cutting method according to the present embodiment includes the following steps (i) to (iv).
  • a plurality of the inserts 1 described above are attached to the cutting tool 10. Therefore, in the step (iii), good chip dischargeability can be maintained in a wide range of cutting depths. Therefore, according to the cutting method according to the present embodiment, it is possible to suppress the generated chips from damaging the work material 15, and as a result, it is possible to obtain a workpiece with high finished surface accuracy.
  • the cutting tool 10 and the work material 15 may be relatively close to each other.
  • the work material 15 may be close to the cutting tool 10.
  • the cutting tool 10 and the work material 15 need only be relatively distant from each other.
  • the work material 15 may be moved away from the cutting tool 10.
  • the state in which the cutting tool 10 is rotated may be maintained, and the process of bringing the cutting blade portion 3 into contact with a different part of the work material 15 may be repeated.
  • the insert 1 When the used cutting edge 3 is worn, the insert 1 may be rotated 45 degrees with respect to the central axis of the mounting hole 20h, and the unused cutting edge 3 may be used.
  • the rake angle of the rake face has been described with specific numerical values.
  • the rake angle of the rake face according to the present invention is not limited to the values exemplified above. That is, as long as the rake angle of the rake face becomes maximum near both ends of the concave cutting edge and becomes smaller from both ends of the concave cutting edge toward the center of the concave cutting edge and each corner, it can be arbitrarily set depending on the application. A rake angle can be employed.
  • the insert has a substantially octagonal shape when viewed from the top, but other shapes include, for example, a substantially square, a substantially regular hexagon, and other polygons when viewed from the top. It can be used. Furthermore, even if the top view is not polygonal, the top surface may be in the shape of an insert having two adjacent corners and the first side, the second side, and the third side.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Milling Processes (AREA)
  • Cutting Tools, Boring Holders, And Turrets (AREA)

Abstract

L'invention porte sur un insert de coupe dont la surface supérieure présente: un premier côté placé entre deux coins adjacents, un deuxième côté partant d'un coin et un troisième côté partant de l'autre coin. L'insert présente un ensemble de lames de coupe formées le long des trois côtés, et sa surface supérieure présente une face de coupe. Ledit ensemble comprend des lames droites disposées le long de chaque coin et des deux côtés de chaque coin, et une lame en retrait selon une vue latérale et disposée entre les lames droites adjacentes formées le long du premier côté. L'angle de coupe de la face de coupe a une valeur maximale à proximité des deux extrémités de la lame en retrait et s'amincit en allant de ces deux extrémités vers son centre et vers les différents coins. L'invention porte également sur un outil de coupe où l'insert est monté dans un support, et sur une méthode de coupe d'une pièce à usiner à l'aide de l'outil de coupe.
PCT/JP2009/051566 2008-01-30 2009-01-30 Insert de coupe, outil de coupe et méthode de coupe WO2009096516A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2009551594A JP5227342B2 (ja) 2008-01-30 2009-01-30 切削インサートおよび切削工具、並びに切削方法

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2008-018669 2008-01-30
JP2008018669 2008-01-30

Publications (1)

Publication Number Publication Date
WO2009096516A1 true WO2009096516A1 (fr) 2009-08-06

Family

ID=40912859

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2009/051566 WO2009096516A1 (fr) 2008-01-30 2009-01-30 Insert de coupe, outil de coupe et méthode de coupe

Country Status (2)

Country Link
JP (1) JP5227342B2 (fr)
WO (1) WO2009096516A1 (fr)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012046485A1 (fr) * 2010-10-06 2012-04-12 大昭和精機株式会社 Plaquette de coupe
EP2492035A1 (fr) * 2011-02-24 2012-08-29 Seco Tools AB Insert de découpe octogonale doté d'une partie de contour avec un angle de cale variable et outil de découpe
JP2013154438A (ja) * 2012-01-31 2013-08-15 Kyocera Corp 切削インサート、切削工具および切削工具を用いた被削材の切削方法
CN103492109A (zh) * 2011-04-28 2014-01-01 京瓷株式会社 切削镶刀及切削工具、以及使用该切削工具的切削加工物的制造方法
US20140072377A1 (en) * 2012-09-07 2014-03-13 Sandvik Intellectual Property Ab Milling tool as well as a milling insert therefor
EP2641677A4 (fr) * 2010-11-15 2016-03-02 Mitsubishi Materials Corp Plaquette de coupe
US20170189972A1 (en) * 2014-05-26 2017-07-06 Tungaloy Corporation Cutting insert having varying rake angle and variable-width land, and cutting tool
EP3838460A1 (fr) 2019-12-13 2021-06-23 Tungaloy Corporation Insert de coupe
CN113507996A (zh) * 2019-03-27 2021-10-15 住友电工硬质合金株式会社 切削刀具
US11407043B2 (en) 2019-12-13 2022-08-09 Tungaloy Corporation Cutting insert
US20230053686A1 (en) * 2021-08-17 2023-02-23 Kennametal Inc. Clamping tool holder

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101733201B1 (ko) * 2015-03-04 2017-05-08 새롬정밀기술(주) 엔진의 흡배기 밸브시트 정삭가공용 절삭공구

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11347826A (ja) * 1998-06-10 1999-12-21 Toshiba Tungaloy Co Ltd スローアウェイチップ
JP2001502250A (ja) * 1996-10-17 2001-02-20 セコ トゥールズ アクティエボラーグ フライス削り用の工具と切削差込み工具
JP2007260788A (ja) * 2006-03-27 2007-10-11 Mitsubishi Materials Corp 切削インサート及び切削工具
JP2008006579A (ja) * 2006-06-27 2008-01-17 Sandvik Intellectual Property Ab 正面フライスインサート

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11347828A (ja) * 1998-06-03 1999-12-21 Suehiro Mizukawa 帯刃加工方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001502250A (ja) * 1996-10-17 2001-02-20 セコ トゥールズ アクティエボラーグ フライス削り用の工具と切削差込み工具
JPH11347826A (ja) * 1998-06-10 1999-12-21 Toshiba Tungaloy Co Ltd スローアウェイチップ
JP2007260788A (ja) * 2006-03-27 2007-10-11 Mitsubishi Materials Corp 切削インサート及び切削工具
JP2008006579A (ja) * 2006-06-27 2008-01-17 Sandvik Intellectual Property Ab 正面フライスインサート

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012081526A (ja) * 2010-10-06 2012-04-26 Daishowa Seiki Co Ltd インサート
CN103221167A (zh) * 2010-10-06 2013-07-24 大昭和精机株式会社 刀具
WO2012046485A1 (fr) * 2010-10-06 2012-04-12 大昭和精機株式会社 Plaquette de coupe
US9782844B2 (en) 2010-10-06 2017-10-10 Daishowa Seiki Kabushiki Kaisha Insert
CN103221167B (zh) * 2010-10-06 2016-06-08 大昭和精机株式会社 刀具
US9364898B2 (en) 2010-11-15 2016-06-14 Mitsubishi Materials Corporation Cutting insert
EP2641677A4 (fr) * 2010-11-15 2016-03-02 Mitsubishi Materials Corp Plaquette de coupe
EP2492035A1 (fr) * 2011-02-24 2012-08-29 Seco Tools AB Insert de découpe octogonale doté d'une partie de contour avec un angle de cale variable et outil de découpe
WO2012113682A1 (fr) * 2011-02-24 2012-08-30 Seco Tools Ab Plaquette de coupe octogonale ayant une partie bord à angle de taillant variable, et outil de coupe
CN103492109A (zh) * 2011-04-28 2014-01-01 京瓷株式会社 切削镶刀及切削工具、以及使用该切削工具的切削加工物的制造方法
JP5715688B2 (ja) * 2011-04-28 2015-05-13 京セラ株式会社 切削インサートおよび切削工具、並びにそれを用いた切削加工物の製造方法
JP2013154438A (ja) * 2012-01-31 2013-08-15 Kyocera Corp 切削インサート、切削工具および切削工具を用いた被削材の切削方法
US9573203B2 (en) * 2012-09-07 2017-02-21 Sandvik Intellectual Property Ab Milling tool as well as a milling insert therefor
US20140072377A1 (en) * 2012-09-07 2014-03-13 Sandvik Intellectual Property Ab Milling tool as well as a milling insert therefor
US20170189972A1 (en) * 2014-05-26 2017-07-06 Tungaloy Corporation Cutting insert having varying rake angle and variable-width land, and cutting tool
US10131002B2 (en) * 2014-05-26 2018-11-20 Tungaloy Corporation Cutting insert having varying rake angle and variable-width land, and cutting tool
CN113507996A (zh) * 2019-03-27 2021-10-15 住友电工硬质合金株式会社 切削刀具
EP3838460A1 (fr) 2019-12-13 2021-06-23 Tungaloy Corporation Insert de coupe
US11383310B2 (en) 2019-12-13 2022-07-12 Tungaloy Corporation Cutting insert
US11407043B2 (en) 2019-12-13 2022-08-09 Tungaloy Corporation Cutting insert
US20230053686A1 (en) * 2021-08-17 2023-02-23 Kennametal Inc. Clamping tool holder

Also Published As

Publication number Publication date
JPWO2009096516A1 (ja) 2011-05-26
JP5227342B2 (ja) 2013-07-03

Similar Documents

Publication Publication Date Title
JP5227342B2 (ja) 切削インサートおよび切削工具、並びに切削方法
US8979440B2 (en) Cutting insert, cutting tool, and method of manufacturing machined product using them
JP5369185B2 (ja) 切削インサート及び切削工具、並びにそれを用いた切削加工物の製造方法
JP6132178B2 (ja) 切削インサートおよび切削工具
JP5346373B2 (ja) 切削インサート及び切削工具、並びにそれを用いた切削加工物の製造方法
JP4578577B2 (ja) 切削インサート、切削工具、およびそれらを用いる切削方法
JP5596253B2 (ja) 転削インサート
CN103282150B (zh) 具有限定多个支撑面的开槽面的切削刀片
RU2720513C2 (ru) Индексируемая режущая пластина для концевой фрезы и концевая фреза, обеспеченная такой пластиной
JP5297422B2 (ja) 切削インサート及び切削工具、並びにそれを用いた被削材の切削方法
JP6347258B2 (ja) ラジアスエンドミル及び切削加工方法
WO2015008724A1 (fr) Plaquette de coupe, outil de coupe et procédé de fabrication d'un produit coupé
KR20140106538A (ko) 절삭 인서트 및 날끝 교환식 절삭 공구
KR20140002766A (ko) 절삭 인서트 및 절삭 공구, 그리고 그것을 이용한 절삭 가공물의 제조 방법
JP2008279547A (ja) 溝加工方法および総形回転切削工具
WO2012099153A1 (fr) Insert de coupe et outil de coupe à pointe d'arête interchangeable
JP6052455B1 (ja) 切削インサートおよび切削工具
KR20170119670A (ko) 양면 고 이송 밀링 인서트, 고 이송 밀링 공구 및 방법
WO2015002310A1 (fr) Plaquette de coupe, corps d'outil et outil de coupe
WO2014200090A1 (fr) Plaquette de coupe et outil de coupe à arête interchangeable
JP5441615B2 (ja) 切削インサートおよび切削工具ならびに被削加工物の製造方法
JP6066005B1 (ja) 切削インサートおよび切削工具
JP5295271B2 (ja) 切削インサートおよび切削工具、並びにそれを用いた被削材の切削方法
JP5197070B2 (ja) 切削インサート及び切削工具、並びに切削方法
JP5334668B2 (ja) 切削インサートおよび切削工具ならびにそれらを用いた被削加工物の製造方法

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 09707080

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 2009551594

Country of ref document: JP

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 09707080

Country of ref document: EP

Kind code of ref document: A1