Storage case and insert set

Abstract

With the present invention, it is possible to easily determine whether the cutting edge on the upper surface side and the cutting edge on the lower surface side of a cutting insert stored in a storage case are used or not. This storage case includes a first case body of which the upper side is open, and a second case body of which the lower side is open. A first storage part for storing part of the cutting insert is located inward of a first peripheral wall of the first case body. A second storage part for storing the rest of the cutting insert is located inward of a second peripheral wall of the second case body.

Description

Storage case and insert set

[0001] The present disclosure relates to a storage case for storing cutting inserts, and an insert set in which cutting inserts are stored in the storage case.

[0002] Cutting inserts used in metal processing are generally distributed on the market in a storage case in order to reduce breakage of the inserts. A storage case for cutting inserts is known, for example, as described in Patent Document 1. The storage case described in Patent Document 1 includes a box-shaped case body having a plurality of storage compartments for storing the cutting inserts therein, and a lid body for opening and closing the opening of the case body.

[0003] Japan Utility Model Publication No. 05-071186

[0004] A cutting insert according to one aspect of the present disclosure is a storage case for storing a cutting insert, the storage case comprising: a first case body having an open top; and a second case body having an open bottom and fixable to the first case body. The first case body has a bottom wall, a frame-shaped first peripheral wall rising from the outer periphery of the bottom wall, and a first storage section located inside the first peripheral wall for storing a portion of the cutting insert. The second case body has a top wall facing the bottom wall, a frame-shaped second peripheral wall falling from the outer periphery of the top wall and connectable to the first peripheral wall, and a second storage section located inside the second peripheral wall, facing the first storage section, for storing the remaining portion of the cutting insert.

[0005] An insert set according to one aspect of the present disclosure includes a cutting insert and a storage case according to one aspect of the present disclosure that stores the cutting insert.

[0006] 7 is a schematic perspective view of an insert set according to the present disclosure, showing a state in which the second case body has been removed from the first case body. FIG. 8 is a schematic perspective view of a storage case according to the present disclosure, showing a state in which the second case body has been removed from the first case body. FIG. 9 is a schematic perspective view of an insert set according to the present disclosure, showing a state in which the second case body has been attached to the first case body. FIG. 10 is a schematic perspective view of a cutting insert according to an example of the present disclosure. FIG. 11 is a schematic view of a cutting insert according to an example of the present disclosure, seen from the top side. FIG. 12 is a schematic view of an insert set according to an example of the present disclosure, seen from the opening side of the first case body. FIG. 13 is a schematic view of an insert set according to an example of the present disclosure, seen from the ceiling wall side of the second case body. FIG. 14 is an enlarged cross-sectional view taken along line VIII-VIII in FIG. 7. FIG. 15 is a cross-sectional view taken along line IX-IX in FIG. 16. FIG. 16 is a cross-sectional view taken along line X-X in FIG. 17.

[0007] For example, cutting inserts stored in a storage case include a so-called single-sided type that has cutting edges only on the top surface, and a so-called double-sided type that has cutting edges on both the top and bottom surfaces. In the case of a double-sided cutting insert, when either the top or bottom cutting edge wears out, the cutting insert is turned upside down and the other cutting edge, either the top or bottom cutting edge, is used.

[0008] For example, in the above-mentioned storage case, of the cutting edges on the upper and lower surfaces, the cutting edge located on the opening side of the storage section is visible. Therefore, it is easy to determine whether the visible cutting edge is worn or not, in other words, whether the cutting edge has been used or not. However, the cutting edge located on the bottom side of the storage section of the case body, in other words, the side opposite the opening side, may not be visible. In this case, it is necessary to remove the cutting insert from the storage case and check whether the cutting edge located on the bottom side of the storage section of the case body has been used or not.

[0009] The insert set, cutting insert, and storage case according to the present disclosure will be described in detail below with reference to the drawings. However, for the sake of convenience, the figures referred to below show only the components necessary for explaining the embodiments in a simplified form. Therefore, the insert set, cutting insert, and storage case according to the present disclosure may include any components not shown in the figures referred to. Furthermore, the dimensions of the components in the figures do not faithfully represent the actual dimensions of the components or the dimensional ratios of each member.

[0010] In this disclosure, the width direction refers to the width direction of the insert set or storage case, and is synonymous with the horizontal direction. The length direction refers to the length direction of the insert set or storage case, and is synonymous with the vertical direction. In the drawings, "WD" refers to the width direction, "LD" refers to the length direction, "HD" refers to the up-down direction, "HDa" refers to the upper side or upward direction, and "HDb" refers to the lower side or downward direction.

[0011] An insert set 10 and a cutting insert 12 according to an example of the present disclosure will be described with reference to FIGS. 1 to 5. FIG. 1 is a schematic perspective view of the insert set 10 according to the present disclosure, showing a state in which the second case body 30 has been removed from the first case body 28. FIG. 2 is a schematic perspective view of the storage case 16 according to the present disclosure, showing a state in which the second case body 30 has been removed from the first case body 28. FIG. 3 is a schematic perspective view of the insert set 10 according to the present disclosure, showing a state in which the second case body 30 has been attached to the first case body 28. FIG. 4 is a schematic perspective view of the cutting insert 12 according to an example of the present disclosure. FIG. 5 is a schematic view of the cutting insert 12 according to an example of the present disclosure, viewed from the top surface 18.

[0012] As shown in the examples of Figures 1 to 3, the insert set 10 of the examples of the present disclosure may include a plurality of cutting inserts 12 for cutting a workpiece made of metal or the like, and the cutting inserts 12 may have through holes 14.

[0013] The cutting insert 12 may be attached to a pocket of the holder when cutting a workpiece. The cutting insert 12 may be attached to the pocket of the holder by fastening a fixing screw inserted into the through hole 14 to the holder. The insert set 10 may also include a storage case 16 for storing a plurality of cutting inserts 12.

[0014] As shown in the examples of Figures 4 and 5, the cutting insert 12 may have a rectangular upper surface 18 and a rectangular lower surface 20 located opposite the upper surface 18. The upper surface 18 and the lower surface 20 may each have a polygonal shape other than a rectangular shape, such as a triangular shape. The term "tetragonal shape" is not limited to a rectangular shape in the strict sense, but includes a shape that can be visually recognized as a rectangular shape overall. The term "polygonal shape" is not limited to a polygonal shape in the strict sense, but includes a shape that can be visually recognized as a polygonal shape overall.

[0015] The cutting insert 12 may have a side surface 22 located between the upper surface 18 and the lower surface 20. The side surface 22 may be connected to the upper surface 18 and the lower surface 20. The side surface 22 may function as a clearance surface and may be parallel to the central axis 14c of the through hole 14. The cutting insert 12 may be a so-called negative type cutting insert having a clearance angle of 0 degrees.

[0016] The through hole 14 of the cutting insert 12 may extend from the upper surface 18 to the lower surface 20. One end of the through hole 14 may open to the center of the upper surface 18. The other end of the through hole 14 may open to the center of the lower surface 20.

[0017] The cutting insert 12 may have an upper cutting edge 24 located on the outer periphery of the upper surface 18, where the upper surface 18 and the side surface 22 intersect. The cutting insert 12 may have a lower cutting edge 26 located on the outer periphery of the lower surface 20, where the lower surface 20 and the side surface 22 intersect. In other words, the cutting insert 12 may be a double-sided insert having an upper cutting edge 24 and a lower cutting edge 26.

[0018] The upper cutting edge 24 may be located along the entire outer periphery of the upper surface 18, or along only a portion of the outer periphery of the upper surface 18. The lower cutting edge 26 may be located along the entire outer periphery of the lower surface 20, or along only a portion of the outer periphery of the lower surface 20.

[0019] When cutting is performed by the upper cutting edge 24, a portion of the upper surface 18 may function as a rake surface, and the lower surface 20 may function as a seating surface for attachment to a pocket of a holder. When cutting is performed by the lower cutting edge 26, a portion of the lower surface 20 may function as a rake surface, and the upper surface 18 may function as a seating surface.

[0020] Examples of the material of the cutting insert 12 include cemented carbide and cermet. Examples of cemented carbide compositions include WC-Co, which is produced by adding cobalt (Co) powder to tungsten carbide (WC) and sintering the mixture; WC-TiC-Co, which is produced by adding titanium carbide (TiC) to WC-Co; and WC-TiC-TaC-Co, which is produced by adding tantalum carbide (TaC) to WC-TiC-Co. Cermet is a sintered composite material in which a ceramic component is combined with a metal, and specific examples include sintered composite materials whose main component is a titanium compound such as titanium carbide (TiC) or titanium nitride (TiN).

[0021] The surface of the cutting insert 12 may be coated with a film by chemical vapor deposition (CVD) or physical vapor deposition (PVD). The film may have a composition of titanium carbide (TiC), titanium nitride (TiN), titanium carbonitride (TiCN), or alumina (Al ２ O ３ ) etc.

[0022] A storage case 16 according to an example of the present disclosure will be described with reference to Figures 1, 2, and 6 to 10. Figure 6 is a schematic diagram of the insert set 10 according to an example of the present disclosure, viewed from the opening side of the first case body 28. Figure 7 is a schematic diagram of the insert set 10 according to an example of the present disclosure, viewed from the ceiling wall 42 side of the second case body 30. Figure 8 is an enlarged cross-sectional view taken along line VIII-VIII in Figure 7. Figure 9 is a cross-sectional view taken along line IX-IX in Figure 8. Figure 10 is a cross-sectional view taken along line X-X in Figure 8.

[0023] 1, 2, and 6, the storage case 16 may include a box-shaped first case body 28, which may be open at the top. Examples of materials for the first case body 28 include hard resins such as polypropylene and polyethylene terephthalate.

[0024] As shown in the examples in Figures 1, 2, and 7, the storage case 16 may include a box-shaped second case body 30 that can be fixed (attached) to the first case body 28. The second case body 30 may have an opening on the bottom. Examples of materials for the second case body 30 include hard resins such as polypropylene and polyethylene terephthalate. The second case body 30 may be detachable (connectable) to the first case body 28 with the opening side of the second case body 30 facing the opening side of the first case body 28.

[0025] 1, 2, 6, and 8, the first case body 28 may have a rectangular bottom wall 32 and a rectangular frame-shaped first peripheral wall 34 that rises from the outer periphery of the bottom wall 32. The first peripheral wall 34 may have a rectangular frame-shaped protrusion 34p on its opening side.

[0026] The first case body 28 may have a plurality of first lateral walls 36 located inside the first peripheral wall 34 and extending in the width direction (lateral direction). The plurality of first lateral walls 36 may be located at intervals in the length direction, and the lower ends of the first lateral walls 36 may be connected to the bottom wall 32.

[0027] The first case body 28 may also have a first vertical wall 38 located inside the first peripheral wall 34 and extending in the length direction (vertical direction). The first vertical wall 38 may be located so as to cross the plurality of first horizontal walls 36. The lower end of the first vertical wall 38 may be connected to the bottom wall 32. The plurality of first horizontal walls 36 and first vertical walls 38 may be located inside the first peripheral wall 34 in a lattice pattern.

[0028] The inside of the first peripheral wall 34 may be partitioned by the plurality of first horizontal walls 36 and the first vertical walls 38 into a plurality of first storage sections (first storage spaces) 28s for storing the upper part of the cutting insert 12, which is a part of the cutting insert 12. In other words, the first case body 28 may have a plurality of first storage sections 28s located inside the first peripheral wall 34.

[0029] 1 , 2 , 6 , 8 , and 9 , the first case body 28 may have first protrusions 40 in the shape of a regular octagonal prism that are located in each first storage section 28s and protrude upward from the bottom wall 32. Instead of making each first protrusion 40 into a regular octagonal prism shape, it may also be made into a regular polygonal prism shape other than a regular octagonal prism, such as a regular square prism or a regular pentagonal prism. Instead of making each first protrusion 40 into a regular polygonal prism shape, it may also be made into a polygonal prism shape other than a regular polygonal prism.

[0030] 1, 2, 7, and 8, the second case body 30 may have a rectangular ceiling wall 42 and a rectangular frame-shaped second peripheral wall 44 that extends downward from the outer periphery of the ceiling wall 42. The second peripheral wall 44 may have a rectangular frame-shaped recess 44d on its opening side that can fit into the protrusion 34p of the first peripheral wall 34.

[0031] The second peripheral wall 44 may be joined to the first peripheral wall 34 by fitting the recessed portion 44d of the second peripheral wall 44 into the protruding portion 34p of the first peripheral wall 34. The second peripheral wall 44 may have a rectangular frame-shaped protruding portion instead of the recessed portion 44d. In this case, the first peripheral wall 34 may have a rectangular frame-shaped recessed portion that can fit with the protruding portion of the second peripheral wall 44 instead of the protruding portion 34p.

[0032] The second case body 30 may have a plurality of second lateral walls 46 located inside the second peripheral wall 44 and extending in the width direction (lateral direction). The plurality of second lateral walls 46 may be located at intervals in the longitudinal direction, and the upper ends of the second lateral walls 46 may be connected to the ceiling wall 42.

[0033] The second case body 30 may also have a second vertical wall 48 located inside the second peripheral wall 44 and extending in the length direction (vertical direction). The second vertical wall 48 may be located inside the second peripheral wall 44 so as to cross the plurality of second horizontal walls 46. The upper end of the second vertical wall 48 may be connected to the ceiling wall 42. The plurality of second horizontal walls 46 and second vertical walls 48 may be located inside the second peripheral wall 44 in a lattice pattern.

[0034] The inside of the second peripheral wall 44 may be partitioned by the second horizontal walls 46 and the second vertical walls 48 into a plurality of second storage sections (second storage spaces) 30s for storing the lower part of the cutting insert 12, which is another part of the cutting insert 12. In other words, the second case body 30 may have a plurality of second storage sections 30s located inside the second peripheral wall 44.

[0035] 1 , 2 , 6 , 8 , and 10 , the second case body 30 may have second protrusions 50 in the shape of a regular octagonal prism that are located in each second storage section 30s and protrude downward from the ceiling wall 42. Instead of making each second protrusion 50 into a regular octagonal prism shape, it may also be made into a regular polygonal prism shape other than a regular octagonal prism shape, such as a regular square prism shape or a regular pentagonal prism shape. Instead of making each second protrusion 50 into a regular polygonal prism shape, it may also be made into a polygonal prism shape other than a regular polygonal prism shape.

[0036] 7 and 8 , each second protrusion 40 may face each first protrusion 40. In other words, when viewed from above, each first protrusion 40 and each second protrusion 50 may overlap. Each second protrusion 40 may be spaced apart from each first protrusion 40. In other words, there may be a gap between each first protrusion 40 and each second protrusion 50 that face each other.

[0037] As in the examples shown in Figures 8 to 10, in the insert set 10, the intermediate portion (the intermediate portion in the depth direction) of the through hole 14 of the cutting insert 12 may have a regular octagonal prism shape. Instead of making the intermediate portion of the through hole 14 of the cutting insert 12 have a regular octagonal prism shape, a portion above or below the intermediate portion of the through hole 14 of the cutting insert 12 may have a regular octagonal prism shape. Instead of making the intermediate portion of the through hole 14 of the cutting insert 12 have a regular octagonal prism shape, the entire through hole 14 of the cutting insert 12 may have a regular octagonal prism shape. In other words, at least a portion of the through hole 14 of the cutting insert 12 may have a regular octagonal prism shape.

[0038] As shown in the example of Fig. 8, the thickness of the cutting insert in the vertical direction may be greater than each of the heights of the first peripheral wall and the second peripheral wall. In the example of Fig. 8, since the through hole extends in the vertical direction, the thickness of the cutting insert in the vertical direction may also be rephrased as the thickness of the cutting insert in the direction along the through hole. In other words, the thickness of the cutting insert in the direction along the through hole may be greater than each of the heights of the first peripheral wall and the second peripheral wall.

[0039] 8 to 10 , in the insert set 10, the first protrusion 40 of the first case body 28 may be inserted into the through hole 14 of the cutting insert 12. The second protrusion 50 of the second case body 30 may be inserted into the through hole 14 of the cutting insert 12. The outer peripheral surface of the first protrusion 40 of the first case body 28 may contact the inner peripheral surface of the through hole 14 of the cutting insert 12. In addition, the outer peripheral surface of the second protrusion 50 of the second case body 30 may contact the inner peripheral surface of the through hole 14 of the cutting insert 12. This may restrict rotation of the cutting insert 12 around the central axis 14c of the through hole 14.

[0040] 8 and 9 , in the first predetermined cross section of the insert set 10, the inner peripheral surface of the through hole 14 of the cutting insert 12 may have an M1 polygonal shape. In the first predetermined cross section of the insert set 10, the outer peripheral surface of the first protrusion 40 of the first case body 28 may have an M2 polygonal shape.

[0041] The first predetermined cross section is a cross section that is perpendicular to the central axis 14c of the through hole 14 of the cutting insert 12 and passes through the middle portion of the through hole 14 of the cutting insert 12 and the first protrusion 40 of the first case body 28. Between M1 and M2, M1 = n1 × M2 ... Relationship 1 or M2 = n1 × M1 ... Relationship 2 (where M1 and M2 are integers of 3 or greater, and n1 is a natural number) may be satisfied. In Relationship 1 and Relationship 2, n1 may be 1.

[0042] 8 and 10 , in the second predetermined cross section of the insert set 10, the inner peripheral surface of the through hole 14 of the cutting insert 12 may have an M1 polygonal shape. In the second predetermined cross section of the insert set 10, the outer peripheral surface of the second protrusion 50 of the second case body 30 may have an M3 polygonal shape.

[0043] The second predetermined cross section is a cross section that is perpendicular to the central axis 14c of the through hole 14 of the cutting insert 12 and passes through the middle of the through hole 14 of the cutting insert 12 and the second protrusion 50 of the second case body 30. Between M1 and M3, M1 = n2 × M3...relationship 3 or M3 = n2 × M1...relationship 4 (where M1 and M2 are integers equal to or greater than 3, and n2 is a natural number) may be satisfied. In relations 3 and 4, n2 may be 1.

[0044] 8 and 9 , in a first predetermined cross section of the insert set 10, the inner peripheral surface of the through hole 14 of the cutting insert 12 and the outer peripheral surface of the first protrusion 40 of the first case body 28 may each have a regular octagonal prism shape. Instead of making the inner peripheral surface of the through hole 14 of the cutting insert 12 and the outer peripheral surface of the first protrusion 40 of the first case body 28 into a regular octagonal prism shape, they may also have a regular polygonal prism shape other than a regular octagonal prism shape, such as a regular square prism shape or a regular pentagonal prism shape.

[0045] 8 and 10 , in a second predetermined cross section of the insert set 10, the inner peripheral surface of the through hole 14 of the cutting insert 12 and the outer peripheral surface of the second protrusion 50 of the second case body 30 may each have a regular octagonal prism shape. Instead of making the inner peripheral surface of the through hole 14 of the cutting insert 12 and the outer peripheral surface of the second protrusion 50 of the second case body 30 into a regular octagonal prism shape, they may also have a regular polygonal prism shape other than a regular octagonal prism shape, such as a regular square prism shape or a regular pentagonal prism shape.

[0046] 5, 9, and 10, in the insert set 10, the upper surface 18 of the cutting insert 12 may have an M4 polygonal shape. In the first predetermined cross section and the second predetermined cross section of the insert set 10, the inner peripheral surface of the through hole 14 of the cutting insert 12 may have an M1 polygonal shape. Furthermore, between M1 and M4, M1 = n3 × M4 ... relationship 5 or M4 = n3 × M1 ... relationship 4 (where M1 and M4 are integers equal to or greater than 3, and n3 is a natural number) may be satisfied.

[0047] 1 and 2 , the storage case 16 of the example disclosed herein includes a first case body 28 that is open at the top and a second case body 30 that is fixable (attachable) to the first case body 28 and that is open at the bottom. The first case body 28 has a plurality of first storage portions 28s for storing upper portions of the cutting inserts 12. The second case body 30 has a plurality of second storage portions 30s for storing lower portions of the cutting inserts 12.

[0048] Therefore, by removing the second case body 30 from the first case body 28 and opening the opening of the first case body 28, the upper surface 18 side of the cutting insert 12 stored in the multiple first storage sections of the first case body 28 can be viewed from the outside.

[0049] Furthermore, after the storage case 16 is turned upside down, the first case body 28 may be removed from the second case body 30 to open the opening of the second case body 30. This makes it possible to visually check the lower surfaces 20 of the cutting inserts 12 stored in the plurality of second storage portions 30s of the second case body 30 from the outside.

[0050] Therefore, according to the storage case 16 of the example disclosed herein, it is possible to easily determine whether the upper cutting edges 24 on the upper surface 18 side and the lower cutting edges 26 on the lower surface 20 side of the plurality of cutting inserts 12 stored in the storage case 16 have been used. As a result, the work of replacing the cutting inserts 12 in the holder of the cutting tool (the work of replacing the cutting inserts 12) can be performed efficiently. Furthermore, when the work of replacing the cutting inserts 12 is to be automated, the process of removing the cutting inserts by a robot arm can be performed efficiently.

[0051] Furthermore, with the above configuration, it is possible to improve work efficiency not only when using a robot arm but also when manually replacing the cutting insert 12. For example, when the used cutting insert 12 is removed from the holder and stored in the storage case 16, the cutting insert 12 is stored in the storage case 16 with the upper cutting edge 24 facing downward.

[0052] When the lower cutting edge 26 of the cutting insert 12 stored in this state is to be used for cutting, the cutting insert 12 must be removed from the storage case 16, turned upside down, and then attached to the holder. Here, if work needs to be performed while preventing the cutting insert 12 from falling, the task of turning the cutting insert 12 upside down becomes cumbersome.

[0053] However, suppose that after the storage case 16 is turned upside down, the first case body 28 is removed from the second case body 30 and the opening of the second case body 30 is opened. In this case, the cutting insert 12 can be removed from the storage case 16 with the lower cutting edge 26 facing upward. In this way, the above configuration makes it easy to turn the cutting insert 12 upside down, thereby improving the efficiency of the cutting insert 12 replacement work.

[0054] 1 and 2 , the first case body 28 has a plurality of first protrusions 40 and a plurality of second protrusions 50. In this case, by forming at least a portion of the through hole 14 of the cutting insert 12 into a polygonal pillar shape, rotation of the cutting insert 12 around the central axis 14c of the through hole 14 is restricted. This reduces rattling of the plurality of cutting inserts 12 stored in the storage case 16, and the plurality of cutting inserts 12 can be fixed to the storage case 16 or brought close to a fixed state to the storage case 16.

[0055] As a result, the storage case 16 according to the example of the present disclosure can align the positions and orientations of the plurality of cutting inserts 12. This allows the removal process of the cutting inserts 12 by a robot arm to be performed more efficiently when automating the replacement work of the cutting inserts 12.

[0056] In particular, when each of the first protrusions 40 and each of the second protrusions 50 has a regular polygonal prism shape, as in the examples shown in Figures 6, 9, and 10, rotation of each cutting insert 12 around the central axis 14c of the through hole 14 is more restricted. This allows the multiple cutting inserts 12 to be fixed to the storage case 16 or to be brought closer to a fixed state to the storage case 16. As a result, the above-mentioned effect can be further enhanced.

[0057] As in the example shown in Figure 8, when each second protrusion 50 is spaced apart from each first protrusion 40, the connection between the first peripheral wall 34 and the second peripheral wall 44 becomes easier, thereby improving the handleability of the storage case 16.

[0058] 1 and 8 to 9 , in the insert set 10 of the example of the present disclosure, the first protrusion 40 of the first case body 28 is inserted into the through hole 14 of the cutting insert 12. In addition, in the insert set 10 of the example of the present disclosure, the second protrusion 50 of the second case body 30 is inserted into the through hole 14 of the cutting insert 12.

[0059] In this case, the rattle of the multiple cutting inserts 12 stored in the storage case 16 can be reduced, and the multiple cutting inserts 12 can be fixed to the storage case 16 or brought close to a fixed state to the storage case 16.

[0060] As a result, the storage case 16 according to the example of the present disclosure can align the positions and orientations of the plurality of cutting inserts 12. This allows the removal process of the cutting inserts 12 by a robot arm to be performed more efficiently when automating the replacement work of the cutting inserts 12.

[0061] 8 , when the thickness of the cutting insert in the vertical direction is greater than the height of the first peripheral wall and the height of the second peripheral wall, the cutting insert 12 can be easily removed from the storage case 16. Therefore, with the above configuration, the work efficiency for replacing the cutting insert 12 can be improved.

[0062] 1 and 8 to 9 , in the insert set 10 of the example of the present disclosure, the first protrusion 40 of the first case body 28 is inserted into the through hole 14 of the cutting insert 12. Also, in the insert set 10 of the example of the present disclosure, the second protrusion 50 of the second case body 30 is inserted into the through hole 14 of the cutting insert 12. At least a portion of the through hole 14 of the cutting insert 12 has a polygonal column shape.

[0063] Rotation of the cutting insert 12 around the central axis 14c of the through hole 14 is restricted by contact between the outer peripheral surface of the first protrusion 40 of the first case body 28 and the inner peripheral surface of the through hole 14 of the cutting insert 12. In this case, rattle of the multiple cutting inserts 12 stored in the storage case 16 is reduced, and the multiple cutting inserts 12 can be fixed to the storage case 16 or brought close to a fixed state to the storage case 16.

[0064] As a result, according to the storage case 16 of the example disclosed herein, it is possible to align the positions and orientations of the plurality of cutting inserts 12. This allows the process of removing the cutting inserts 12 by the robot arm to be performed more efficiently when automating the work of replacing the cutting inserts 12.

[0065] As in the examples shown in Figures 7 and 8, when Relationship 1 and Relationship 2 hold between M1 and M2 and Relationship 3 and Relationship 4 hold between M1 and M3, the rotation of each cutting insert 12 around the central axis 14c of the through hole 14 is more restricted.

[0066] This allows the cutting inserts 12 to be fixed to the storage case 16 or brought closer to a fixed state to the storage case 16. As a result, the above-mentioned effects can be further enhanced. In particular, when n1 is 1 in the relationships 1 and 2 and n2 is 1 in the relationships 3 and 4, the above-mentioned effects can be further enhanced.

[0067] When Relationship 5 and Relationship 6 are satisfied between M1 and M4, the rotation of each cutting insert 12 around the central axis 14c of the through hole 14 is further restricted. This allows the multiple cutting inserts 12 to be fixed to the storage case 16 or brought closer to a fixed state to the storage case 16. As a result, the above-mentioned effects can be further enhanced. In particular, when n3 is 1 in Relationships 5 and 6, the above-mentioned effects can be further enhanced.

[0068] In one embodiment, (1) a storage case for storing cutting inserts includes a first case body having an open top and a second case body having an open bottom and being fixable to the first case body. The first case body has a bottom wall, a frame-shaped first peripheral wall rising from the outer periphery of the bottom wall, and a first storage section located inside the first peripheral wall for storing a portion of the cutting insert. The second case body has a top wall facing the bottom wall, a frame-shaped second peripheral wall falling from the outer periphery of the top wall and connectable (fittable) to the first peripheral wall, and a second storage section located inside the second peripheral wall, facing the first storage section, for storing the remaining portion of the cutting insert.

[0069] (2) In the storage case of (1), the first case body may further have a first protrusion located in the first storage section and protruding upward from the bottom wall, and the second case body may further have a second protrusion located in the second storage section and protruding downward from the ceiling wall, and the first protrusion and the second protrusion may overlap when viewed from a plane perspective.

[0070] (3) In the storage case of (2) above, the first protrusion and the second protrusion may each have a regular polygonal prism shape.

[0071] (4) In the storage case of (2) or (3), the first protrusion may be spaced apart from the second protrusion.

[0072] (5) An insert set includes a cutting insert and a storage case according to any one of (1) to (4) that stores the cutting insert.

[0073] (6) An insert set includes a cutting insert having a through hole and a storage case according to any one of (2) to (4) that stores the cutting insert, wherein the first protrusion and the second protrusion are inserted into the through hole.

[0074] (7) In the insert set of (6), the thickness of the cutting insert in the direction along the through hole is greater than the height of the first peripheral wall and the height of the second peripheral wall.

[0075] (8) An insert set includes a cutting insert having a through hole and the storage case of (3) or (4) for storing the cutting insert, wherein at least a portion of the through hole has a polygonal prism shape, the first protrusion and the second protrusion are inserted into the through hole, and rotation of the cutting insert around the central axis of the through hole is restricted by contact between an outer circumferential surface of the first protrusion and an inner circumferential surface of the through hole, and by contact between an outer circumferential surface of the second protrusion and the inner circumferential surface of the through hole.

[0076] The disclosure of the present disclosure has been described above based on the drawings and embodiments. However, the disclosure of the present disclosure is not limited to the above-described embodiments. In other words, the disclosure of the present disclosure can be modified in various ways within the scope of the disclosure, and embodiments obtained by appropriately combining the disclosed technical means are also included in the technical scope of the disclosure of the present disclosure. In other words, it should be noted that a person skilled in the art can easily make various modifications or corrections based on the present disclosure. It should also be noted that these modifications or corrections are included in the scope of the present disclosure.

[0077] REFERENCE SIGNS LIST 10 Insert set 12 Cutting insert 14 Through hole 14c Central axis 16 Storage case 18 Upper surface 20 Lower surface 22 Side surface 24 Upper cutting edge (cutting edge) 26 Lower cutting edge (cutting edge) 28 First case body 28s First storage section 30 Second case body 30s Second storage section 32 Bottom wall 34 First peripheral wall 34p Convex portion 36 First horizontal wall 38 First vertical wall 40 First protrusion 42 Ceiling wall 44 Second peripheral wall 44d Concave portion 46 Second horizontal wall 48 Second vertical wall 50 Second protrusion

Claims

1. A storage case for storing cutting inserts, a first case body having an open top; a second case body that is fixable to the first case body and has an open bottom, The first case body is The bottom wall and a frame-shaped first peripheral wall rising from the outer peripheral edge of the bottom wall; a first storage portion located inside the first peripheral wall and configured to store a portion of the cutting insert; The second case body is a ceiling wall facing the bottom wall; a frame-shaped second peripheral wall that extends downward from the outer periphery of the ceiling wall and is connectable to the first peripheral wall; a second storage portion located inside the second peripheral wall, facing the first storage portion, and configured to store a remaining portion of the cutting insert.

2. the first case body further includes a first protrusion located in the first storage section and protruding upward from the bottom wall, the second case body further includes a second protrusion located in the second storage section and protruding downward from the ceiling wall, The storage case according to claim 1 , wherein the first protrusion and the second protrusion overlap each other in a plan view.

3. The storage case according to claim 2 , wherein the first protrusion and the second protrusion each have a regular polygonal prism shape.

4. The storage case according to claim 2 , wherein the second protrusion is spaced apart from the first protrusion.

5. A cutting insert; An insert set comprising: the storage case according to claim 1 that stores the cutting insert.

6. a cutting insert having a through hole; and a storage case according to any one of claims 2 to 4 that stores the cutting insert, an insert set, wherein the first protrusion and the second protrusion are inserted into the through hole;

7. The insert set according to claim 6 , wherein a thickness of the cutting insert in a direction along the through hole is greater than a height of the first peripheral wall and a height of the second peripheral wall.

8. a cutting insert having a through hole; and a storage case according to claim 3 or 4 that stores the cutting insert, At least a portion of the through hole has a polygonal column shape, the first protrusion and the second protrusion are inserted into the through-hole; An insert set, wherein rotation of the cutting insert around the central axis of the through hole is restricted by contact between the outer surface of the first protrusion and the inner surface of the through hole, and contact between the outer surface of the second protrusion and the inner surface of the through hole.