Cutting insert, cutting tool and method for producing a machine-made product
Patent Information
- Authority / Receiving Office
- DE · DE
- Patent Type
- Patents
- Current Assignee / Owner
- KYOCERA CORP
- Filing Date
- 2019-10-18
- Publication Date
- 2026-07-23
AI Technical Summary
Existing cutting inserts with wide flat surfaces interfere with the workpiece, particularly at the intersection of major and minor cutting edges, leading to instability and potential damage during machining operations.
The cutting insert design features a polygonal shape with strategically curved and inclined side surfaces, minimizing interference with the workpiece while ensuring stable fixation to the holder, enhancing durability and smooth machining.
The insert's design reduces interference with the workpiece, stabilizes the cutting edge, and enhances the durability of the cutting tool, resulting in smoother machined surfaces and improved machining performance.
Abstract
Description
CROSS-REFERENCE TO RELATED REGISTRATION
[0001] The present application claims priority over Japanese patent application No. 2018-199365, filed on October 23, 2018. The content of that application is incorporated herein in full by reference. TECHNICAL AREA
[0002] The present disclosure relates generally to a cutting insert (hereinafter also referred to simply as an insert) for use in a cutting operation of a workpiece, a cutting tool, and a method for producing a machined product. In particular, the present disclosure relates to a cutting tool for use in a milling operation. BACKGROUND
[0003] An indexable insert is discussed, for example, in the Japanese unexamined patent publication No. 2007-98506 (Patent Document 1) and can be used as an insert for use in a cutting operation of a workpiece, such as metal. The insert described in Patent Document 1 has a rectangular plate shape. A primary cutting edge is arranged along a ridge line where an upper surface intersects one of the side faces (a first side face), and a secondary cutting edge is arranged along a ridge line where adjacent side faces (the first side face and a second side face) intersect. A flat surface is formed on both the upper and second side faces.
[0004] If these flat surfaces are wide, the insert can be securely fixed to a holder. However, if these flat surfaces are too wide, they can interfere with the workpiece. In particular, these flat surfaces can disturb the workpiece at a section near a corner where the main cutting edge intersects with the secondary cutting edge. BRIEF EXPLANATION
[0005] An insertion in a non-restrictive aspect of the present disclosure has a first surface, a second surface, and a side surface. The first surface has a polygonal shape. The second surface is located on a side opposite the first surface. The side surface is located between the first surface and the second surface. The first surface has a first vertex, a second vertex, a third vertex, a first side, and a second side. The second vertex and the third vertex are each adjacent to the first vertex. The first side surface is located between the first vertex and the second vertex. The second side surface is located between the first vertex and the third vertex. The side surface has a first side surface and a second side surface. At least a portion of the first side surface is located between the first side and the second surface.At least part of the second side surface is located between the second side and the second surface. In a front view of the first surface, the first side surface is positioned further outwards than the first side. The first side surface has a first region that, with increasing proximity to the second surface, is located closer to the second side surface. List of characters Fig. 1 is a perspective view that shows an application of a non-restrictive aspect of the present revelation, Fig. 2 is a front view of the in Fig. 1. The depicted use is viewed from one side of a first surface. Fig. 3 is a front view of the in Fig. 1. The depicted use is viewed from one side of a second surface. Fig. 4 is a side view of the in Fig. 2. The deployment shown is viewed from the direction of A1. Fig. 5 is a side view of the in Fig. 2. The depicted deployment is viewed from the direction of A2. Fig. 6 is a side view of the in Fig. 2. The depicted deployment is viewed from the direction of A3. Fig. 7 is a side view of the in Fig. 2. The depicted deployment is viewed from the direction of A4. Fig. 8 is an enlarged view of one in Fig. 1 of the area B1 shown, Fig. 9 is an enlarged view of one in Fig. 2 of the area B2 shown, Fig. 10 is a sectional view along line XX in which Fig. 9 depicted use, Fig. 11 is a sectional view along line XI-XI in which in Fig. 9 depicted use, Fig. 12 is a sectional view along line XII-XII in which in Fig. 9 depicted use, Fig. Figure 13 is a perspective view showing a cutting tool in a non-restrictive aspect of the present disclosure. Fig. 14 is an enlarged view of one in Fig. 13 shown area B3, Fig. Figure 15 is a schematic representation showing one of the steps in a process for manufacturing a machined product in a non-restrictive aspect of the present disclosure. Fig. Figure 16 is a schematic representation showing one of the steps in the process for manufacturing a machined product in the non-restrictive aspect of the present disclosure, and Fig. Figure 17 is a schematic representation showing one of the steps in the process for producing a machined product in the non-restrictive aspect of the present disclosure. EXECUTION FORMS
[0006] Designs of cutting inserts 1 The following sections describe the embodiments in detail with reference to the drawings. For the sake of clarity, only the main elements necessary for describing the embodiments are shown in simplified form in the drawings referenced below. 1 They can therefore contain any structural element not shown in the referenced drawings. The dimensions of the elements in the drawings do not represent the dimensions of the actual structural elements, nor do they reflect the dimensional ratios of these elements. <Einsätze>
[0007] The deployment 1 For example, a first area could 3 , a second area 5 , a side surface 7 and a cutting edge 9 exhibit, as in Fig. 1 shown. The first area 3can have a polygonal shape with a plurality of vertices and a plurality of sides, as in a Fig. 2 illustrated embodiment. The first surface 3 can have an approximately rectangular shape, as in the one shown in Fig. 2 depicted embodiment.
[0008] The second area 5 can be on one of the first areas 3 opposite side and can be arranged similarly to the first surface 3 exhibit a polygonal shape with multiple vertices and multiple sides. Similar to the first surface. 3 can also the second area 5 have an approximately rectangular shape. The use 1 can have a square, prismatic shape, as in Fig. 1 shown.
[0009] As used herein, the term "polygonal shape" does not refer to a strictly polygonal shape. For example, the four sides of the first face must 3not be a perfectly straight line individually, but can be in a front view of the first surface 3 be slightly curved. The four corners of the first surface 3 They don't necessarily have to be a strict corner.
[0010] The first area 3 can have a rectangular shape and can have the four corners and four sides as in the in Fig. 2 shown embodiment. The four corners can form a first corner. 11 , a second corner 13 and a third corner 15 exhibit the four sides. 17 and a second page 19 exhibit. That is to say, the first surface 3 can the first corner 11 , the second corner 13 , the third corner 15 , the first page 17 and the second page 19 exhibit.
[0011] The second corner 13 and the third corner 15can each go to the first corner 11 be arranged adjacently. The first page 17 can between the first corner 11 and the second corner 13 be arranged. In other words, the first page can be 17 from the first corner 11 towards the second corner 13 extend.
[0012] The second page 19 can between the first corner 11 and the third corner 15 be arranged. In other words, the second side can 19 from the first corner 11 towards the third corner 15 extend. These parts can extend to an outer circumferential edge of the first surface. 3 in the order of the second corner 13 , the first page 17 , the first corner 11 , the second page 19 and the third corner 15 in one direction from the second corner 13 to the third corner 15be arranged.
[0013] The first corner 11 is not limited to a strict corner defined by the cut of the first page 17 with the second side 19 is trained. For example, the first corner can 11 have a convex, curved shape, which in the front view of the first surface 3 protrudes outwards. Alternatively, the first corner can 11 have a configuration obtained by combining a straight and a curved line, as in the one shown in Fig. 2. Similar to the first corner 11 are also the second corner 13 and the third corner 15 not limited to one strict corner.
[0014] One of the short sides of the first surface 3 , which has a rectangular shape, corresponds to the first page 17 in the Fig. 2. One of the long sides of the first surface 3 The rectangular shape corresponds to the second side. 19 in the Fig. 2 illustrated embodiment. Since the first surface 3 in the Fig. In the embodiment shown in section 2, which has a rectangular shape, the front view of the first surface is 3 an angle in which an extension line of the first side 17 with an extension line of the second side 19 cuts at approximately 90°.
[0015] An imaginary straight line passing through a center point of the first surface 3 and a center point of the second area 5 a central axis can run O1 be. An imaginary plane that lies between the first surface 3 and the second area 5 is arranged and orthogonal to the central axis O1 If a reference plane is established, it can be a reference plane. S1be. Since the first area 3 in the Fig. In the embodiment shown in section 2, which has a rectangular shape, an intersection of diagonals of the first surface can be formed. 3 as the center point of the first area 3 The intersection points of the extension lines of the individual sides, which form the rectangular shape, serve as the starting point of the diagonals.
[0016] Similarly, since the second surface 5 in the Fig. 2. In the illustrated embodiment, the surface has a rectangular shape, and the intersection of diagonals of the second surface is a point of intersection. 5 as the center point of the second area 5 be considered. If the first area 3 It does not have a rectangular shape, can be seen in the front view of the first surface. 3 the center of the first area 3 e.g. by a position of the center of gravity of the first surface 3 be determined.
[0017] In the front view of the first surface 3 can the first area 3 a rotational symmetry of 180° around the central axis O1 have. In the front view of the second surface 5 can the second area 5 a rotational symmetry of 180° around the central axis O1 have.
[0018] The shapes of the first surface 3 and the second area 5 are not limited to the above form. In a Fig. In the embodiment shown in 1, the first surface 3 an approximately square shape. Alternatively, the first surface can be 3 and the second area 5 e.g., a triangular shape, a pentagonal shape, a hexagonal shape, or an octagonal shape.
[0019] The side surface 7 can be used to distinguish between the first area 3 and the second area 5 be arranged. The side surface 7can start with the first area 3 and the second area 5 be connected, as in an embodiment that is in Fig. 4 and Fig. 5 is shown. The use 1 can a cutting edge 9 exhibiting at least part of a section of the first surface 3 and the side surface 7 is arranged.
[0020] The cutting edge 9 It can be used to cut a workpiece if the application 1 It is used in the production of a machined product. The cutting edge 9 It can be positioned over all or part of the cut. The application 1 It may also have another cutting edge that is present at least in part of a cut between the second surface 5 and the side surface 7 is arranged.
[0021] When the cutting edge 9at least on that part of the cross-section of the first surface 3 and the side surface 7 is arranged, one of the first areas can 3 and the side surface 7 One surface may have a chip-faced area, and the other may have a free-form area. The first surface 3 can affect the chip surface area and the side surface 7 can use the open space area as in the Fig. exhibit the embodiment shown in 1.
[0022] The cutting edge 9 can create a first cutting edge 21 , a second cutting edge 23 and a first corner cutting edge 25 exhibit, as in Fig. 1 shown. The cutting edge 9 It can be used in a cutting process of a workpiece. The first cutting edge 21 can be found on the first page 17 be arranged. If the deployment 1For example, when used to carry out the cutting process of the workpiece, the first cutting edge can 21 can be used as a lower cutting edge that is positioned along a machined surface of the workpiece.
[0023] The second cutting edge 23 can be found on the second side 19 be arranged. The second cutting edge 23 can be used as an outer circumferential cutting edge. If the first cutting edge 21 The second cutting edge is used as the lower cutting edge and the second cutting edge as the outer circumferential cutting edge. 23 mainly contributes to the cutting process. The second cutting edge 23 Therefore, in some cases it can also serve as the main cutting edge 9 be designated.
[0024] The first corner cutting edge 25 can at the first corner 11 be arranged. The first corner cutting edge 25can cover all or part of the first corner 11 be arranged. At the in Fig. In the embodiment shown in 1, the first corner cutting edge is 25 across the entire first corner 11 arranged.
[0025] In the front view of the first surface 3 can a maximum width of the first area 3 For example, 6-25 mm. A height from the first surface 3 to the second area 5 It can be, for example, 5-20 mm. As used here, the term refers to "height from the first surface". 3 to the second surface 5" a maximum value of a distance between the first surface 3 and the second area 5 in a direction parallel to the central axis O1 and can be used as the width of the side surface 7 in one direction along the central axis O1 be reformulated.
[0026] The side surface 7In the present embodiment, a first side surface can 27 and a second side surface 29 exhibit, as in Fig. 4 and Fig. 5. At least part of the first side surface 27 can choose between the first page 17 and the second area 5 be arranged. The first side surface 27 can have a flat shape. At least part of the second side surface. 29 can choose between the second side 19 and the second area 5 be arranged. The second side surface 29 can have a flat shape.
[0027] The first side surface 27 and the second side surface 29 can be used as a surface that comes into contact with the holder when the application 1 to which the holder is attached. When the first side surface 27 and the second side surface 29 just are the use 1Can be securely fixed to the holder.
[0028] The aforementioned flat surface area is not limited to a perfectly flat surface. These surface areas can be approximately flat; in particular, they can be slightly curved or exhibit minor irregularities that are generally inconspicuous. More precisely, these surface areas can have slight irregularities of approximately a few tens of micrometers.
[0029] The first side surface 27 can be inclined instead of parallel to the second side surface 29 to run. The first side surface 27 is in the Fig. 2. In the illustrated embodiment, at an angle of approximately 90° to the second side surface 29 inclined, since the extension line of the first side 17 with the extension line of the second side 19 in the front view of the first surface 3 cuts at an angle of approximately 90°.
[0030] The first side surface 27 can be seen in the front view of the first surface 3 be positioned further out than the first side 17 In other words, in the front view of the first surface 3 the first side surface 27 further from the center of the first area 3 be arranged as the first page 17 If the first side surface 27 is positioned further out than the first side 17 , the probability is lower that the cutting edge 9 comes into contact with the holder when the first side surface 27 is brought into contact with the holder to enable use 1 to attach to the holder. The holder and the cutting edge 9 They are therefore less susceptible to damage.
[0031] The first side surface 27may have an area that, with increasing proximity to the second surface, is closer to the second side surface. 29 is arranged. This area will subsequently be referred to as the first area. 31 designated. The first area 31 can be arranged in such a way that it forms an end section of the first side surface 27 includes, which is on one side of the second side surface 29 is arranged as in Fig. 4 shown. The first area 31 can also be arranged in such a way that it forms an end section of the first side surface 27 includes the one on one side of the second surface 5 is arranged.
[0032] At least part of an outer circumferential edge of the first side surface 27 , which is on one side of the second side surface 29 is arranged, can be found in the first area 31 It may be included. In other words, the part of the outer perimeter of the first face can be included. 27, which is in the first area 31 is contained, with increasing proximity to the second surface 5 closer to the second side surface 29 be arranged.
[0033] As in the Fig. In the embodiment shown in 1, a first curved surface can be 33 , which has a convexly curved surface shape, between the first side surface 27 and the second side surface 29 be arranged. The first curved surface 33 can between the first corner 11 and the second area 5 be arranged as in the Fig. 1. A boundary part C1 between the first side surface 27 and the first curved surface 33 can increase with increasing proximity to the second surface 5 closer to the second side surface 29 be arranged as in the Fig. 1 embodiment shown. In particular, the boundary part C1 can extend obliquely in a direction from the upper left to the lower right, as in the embodiment shown in Fig. 4 illustrated embodiment.
[0034] The part of the outer perimeter edge of the first side surface 27 , which is in the first area 31 is contained, can be increased with increasing proximity to the second surface 5 closer to the second side surface 29 be arranged. In other words, the part of the outer perimeter of the first side surface can be 27 , which is in the first area 31 is contained, from the second side surface 29 be arranged far apart, just as it is positioned on the first surface 3 approximates. In this case, it is less likely that the first side face 27 interferes with the workpiece when the first corner cutting edge 25It is used to perform the cutting process on the workpiece. This makes it easier to obtain a smooth surface on the machined area of the workpiece.
[0035] For the first side surface 27 It is less likely to collide with the workpiece and is less susceptible to wear. Consequently, its use is 1 Can be securely fixed to the holder when the first side surface 27 is brought into contact with the holder to enable use 1 to fix it to the holder.
[0036] As already mentioned, one of the short sides of the first surface can 3 the first page 17 be and can be one of the long sides of the first surface 3 the second page 19 be. Thus, the first page can 17 be shorter than the second page 19 .
[0037] If the first page 17 is shorter than the second page 19, has the first side surface 27 tends to have a smaller area than the second side surface 29 In cases where the first side surface 27 the first area 31 includes the deployment 1 Can be securely fixed to the holder, even if the surface of the first side surface 27 is relatively small.
[0038] In a front view of the first side surface 27 can the entire first area 31 between the first page 17 and the second area 5 be arranged. Alternatively, at least part of the first area can be 31 between the first corner 11 and the second area 5 be arranged. If at least part of the first area 31 as described above between the first corner 11 and the second area 5 If the arrangement is such that the first side surface is not the most likely to be ... 27during the cutting process, it interferes with the workpiece and is therefore in use 1 Can be securely fixed to the holder.
[0039] The first side surface 27 can be in a cross-section that includes the central axis O1 includes and the first side surface 27 cuts, inclined or parallel to the central axis O1 get lost. Fig. Figure 10 shows the cross-section, which follows the central axis O1 includes and the first side surface 27 intersects, and shows a first imaginary straight line O1' parallel to the central axis O1 If the first side surface 27 in the above cross-section parallel to the central axis O1 (the first imaginary straight line O1') is the stake 1 less prone to shifting in relation to the holder, and the use 1 It can be fixed more securely to the holder.
[0040] In the front view of the first surface 3can the second side surface 29 be positioned further out than the second side 19 In other words, in the front view of the first surface 3 the second side surface 29 further away from the center of the first area 3 be arranged as the second side 19 If the second side surface 29 is positioned further out than the second side 19 , it is less likely that the cutting edge 9 comes into contact with the holder when the second side surface 29 is brought into contact with the holder to enable use 1 to be attached to the holder. Consequently, the holder and the cutting edge 9 less prone to damage.
[0041] The second side surface 29 may have an area that is closer to the first side surface 27 is arranged as on the second surface 5This area will subsequently be referred to as the second area. 35 designated. The second area 35 can be arranged in such a way that it forms an end section of the second side surface 29 contains, which is on one side of the first side surface 27 is arranged as in Fig. 5 shown.
[0042] At least part of an outer circumferential edge of the second side surface 29 , which is on one side of the first side surface 27 is arranged, can be in the second area 35 It must be included. The portion of the outer perimeter of the second side surface. 29 , which goes into the second area 35 It is contained, can be closer to the first side surface 27 be arranged as it relates to the second surface 5 approximates.
[0043] As with the in Fig. In the embodiment shown in 1, the first curved surface 33with the convex-curved surface shape between the first side surface 27 and the second side surface 29 be arranged. A boundary part C2 between the second side surface 29 and the first curved surface 33 can increase with increasing proximity to the second surface 5 closer to the first side surface 27 be arranged as in the Fig. 5 embodiment shown. In particular, the boundary part C2 can extend obliquely in a direction from the upper right to the lower left, as in the embodiment shown in Fig. 5 depicted embodiment.
[0044] The part of the outer perimeter edge of the second side surface 29 , which is in the second area 35 is contained, can be increased with increasing proximity to the second surface 5 closer to the first side surface 27 be arranged. In other words, the part of the outer perimeter of the second side surface can be 29, which is in the second area 35 is contained, from the first side surface 27 be arranged far apart, just as it is positioned on the first surface 3 approximates. In this case, it is less likely that the second side surface 29 interferes with the workpiece when the first corner cutting edge 25 It is used to perform the cutting process on the workpiece. This makes it easier to obtain a smooth surface on the machined area of the workpiece.
[0045] Furthermore, the second side surface 29 less susceptible to interference with the workpiece and less prone to wear. Consequently, its use is 1 Can be securely fixed to the holder when the second side surface 29 is brought into contact with the holder to enable use 1 to fix it to the holder.
[0046] The entire second area 35 can choose between the second side 19and the second area 5 in a front view of the second side surface 29 be arranged. Alternatively, at least part of the second area can be 35 between the first corner 11 and the second area 5 be arranged. If at least part of the second area 35 as described above between the first corner 11 and the second area 5 If the arrangement is such that the second side surface is less likely to be 29 during the cutting process, it interferes with the workpiece, and the use 1 It can be fixed more securely to the holder.
[0047] The second side surface 29 can be in a cross-section that includes the central axis O1 includes and connects with the second side surface 29 cuts, obliquely or parallel to the central axis O1 get lost. Fig. Figure 11 shows the cross-section, which follows the central axis O1includes and the second side surface 29 intersects, and shows a second imaginary straight line O1'' parallel to the central axis 01. If the second side surface 29 in the above cross-section parallel to the central axis O1 (the second imaginary line O1'') runs, is the stake 1 less prone to shifting in relation to the holder, and the use 1 It can be fixed more securely to the holder.
[0048] In cases where the side surface 7 the first side surface 27 and the second side surface 29 exhibits a width of the first side surface 27 in a direction parallel to the central axis O1 a first width W1 and is a width of the second side surface 29 in the direction parallel to the central axis O1 a second width W2 The second width W2 It can, for example, be larger than the first width.W1 .
[0049] When the first cutting edge 21 as the lower cutting edge and the second cutting edge 23 The second cutting edge is used as the outer circumferential cutting edge in the cutting process. 23 prone to relatively high cutting loads. If the second width W2 is larger than the first width W1 , has the second cutting edge 23 Higher strength. This leads to increased durability of the insert. 1 .
[0050] The side surface 7 Furthermore, a first connecting surface can 37 and a second connecting surface 39 exhibit the first connecting surface 37 can in an area of the side surface 7 be arranged along the first page 17 is arranged, and can be used with the first page 17 be connected, as in Fig. 4 shown. The first connecting surface 37can be used in the Fig. 4 illustrated embodiment between the first side 17 and the first side surface 27 be arranged.
[0051] The second connecting surface 39 can be located in an area on the side surface 7 be arranged along the second side 19 is arranged, and can be used with the second side 19 be connected, as in Fig. 5 shown. The second connecting surface 39 can be used in the Fig. 5 illustrated embodiment between the second side 19 and the second side surface 29 be arranged.
[0052] The first connecting surface 37 can in the cross-section that follows the central axis O1 includes, obliquely or parallel to the central axis O1 proceed. In Fig. 10 is the first connecting surface 37parallel to the first imaginary straight line 01'. If the first connecting surface 37 in the above cross-section parallel to the central axis O1 (the first imaginary straight line O1') runs, is the probability that the first side face 27 Interference with the workpiece is significantly less. Consequently, a machined surface of the workpiece tends to have a smoother surface.
[0053] If the first connecting surface 37 parallel to the central axis O1 The first cutting edge runs 21 a sharp cutting edge. When using the first cutting edge 21 As the lower cutting edge, the machined surface of the workpiece tends to be smoother.
[0054] A width of the first connecting surface 37 in the direction parallel to the central axis O1 can as you get closer to the first corner 11in the front view of the first side surface 27 get bigger. When the first cutting edge 21 When used to carry out the cutting process, part of the first side surface is inclined. 27 , the one closer to the second side surface 29 is arranged to come into contact with the workpiece.
[0055] If the width of the first connecting surface 37 As described above, as the size increases, so does the portion of the first side surface. 27 , which tends to come into contact with the workpiece, is less likely to come into contact with the workpiece. This results in a smoother finish to the machined surface of the workpiece.
[0056] The second connecting surface 39 can in the cross-section that follows the central axis O1 includes, obliquely or parallel to the central axis O1 route. For example, in the cross-section above, the second connecting surface can be 39have a part that is inclined in such a way that it deviates from the central axis O1 (the second imaginary line O1'') is arranged further away, as it is from the second side 19 removed.
[0057] If the second connecting surface 39 As described above, the cutting edge of the second cutting edge is inclined. 23 a great thickness and increased strength. The application 1 due to the increased strength of the second cutting edge 23 , which is subjected to a relatively large cutting load, improved durability.
[0058] Front view of the second side surface 29 can the width of the second connecting surface 39 in the direction parallel to the central axis O1 as we get closer to the first corner 11 become larger. When the second cutting edge 23When used to carry out the cutting process, it is more likely that part of the second side surface will be used. 29 , the one closer to the first side surface 27 is arranged so that it comes into contact with the workpiece.
[0059] If the width of the second connecting surface 39 As described above, as the size increases, so does the portion of the second side surface. 29 The material that tends to come into contact with the workpiece is less likely to do so. This results in a smoother finish to the machined surface of the workpiece.
[0060] The first area 3 Furthermore, a fourth corner can 41 , a third page 43 and a fourth page 45 exhibit the fourth corner 41 can be adjacent to the second corner 13 and the third corner 15 be arranged. The third page 43 can between the second corner 13and the fourth corner 41 be arranged. The fourth page 45 can between the third corner 15 and the fourth corner 41 be arranged.
[0061] The other of the short sides of the first surface 3 , which has a rectangular shape, is in the in Fig. 2. The fourth side of the illustrated embodiment. 45 The other of the long sides of the first surface 3 , which has a rectangular shape, is in the in Fig. 2. The third side of the illustrated embodiment. 43 Similar to the first corner 11 , the second corner 13 and the third corner 15 is also the fourth corner 41 not limited to one strict corner.
[0062] The cutting edge 9 can a third cutting edge 47 , a fourth cutting edge 49 and a second corner cutting edge 51 exhibit, as in Fig. 2 shown. The third cutting edge 47 can be found on the third side 43 be arranged. The third cutting edge 47 It can be used as an outer circumferential cutting edge. The fourth cutting edge 49 can be found on the fourth page 45 be arranged. For example, if the deployment 1 The fourth cutting edge is used in the present embodiment to carry out the cutting process of the workpiece. 49 usable as a lower cutting edge, which is arranged along the machined surface of the workpiece.
[0063] In cases where the fourth cutting edge 49 as the lower cutting edge and the third cutting edge 47 When used as the outer circumferential cutting edge, as described above, the third cutting edge carries 47 mainly contributes to the cutting process. The third cutting edge 47 Therefore, in some cases it is used as the main cutting edge 9designated. The second corner cutting edge 51 can at the second corner 13 be arranged. The second corner cutting edge 51 can cover the entire second corner 13 be arranged as in Fig. 2 shown.
[0064] The side surface 7 Furthermore, a third side surface can be used. 53 and a fourth face 55 exhibit, as in Fig. 6 and Fig. 7 shown. At least part of the third face 53 can choose between the third side 43 and the second area 5 be arranged. The third side surface 53 can have a flat shape. At least part of the fourth face. 55 can choose between the fourth page 45 and the second area 5 be arranged. The fourth side surface 55 can have a flat shape.
[0065] The third side surface 53and the fourth face 55 can be used as a surface that comes into contact with the holder when the application 1 to which it is attached. The use 1 It can be securely attached to the holder, thanks to the third side surface 53 and the fourth face 55 just are.
[0066] For example, if the first cutting edge 21 , the second cutting edge 23 and the first corner cutting edge 25 The third side surface can be used during the cutting process of the workpiece. 53 and the fourth face 55 be brought into contact with the holder. When the third cutting edge 47 , the fourth cutting edge 49 and the second corner cutting edge 51 The first side surface can be used during the cutting process of the workpiece. 27 and the second side surface 29be brought into contact with the holder.
[0067] In the front view of the first surface 3 can the fourth side surface 55 be positioned further out than the fourth surface 45 In other words, in the front view of the first surface 3 the fourth side surface 55 further away from the center of the first area 3 to be arranged as the fourth page 45 If the fourth face 55 is positioned further out than the fourth side 45 , the probability is lower that the cutting edge 9 comes into contact with the holder when the fourth side surface 55 is brought into contact with the holder to enable use 1 to attach to the holder. The holder and the cutting edge 9 They are therefore less susceptible to damage.
[0068] The first side surface 27may have an area that increases with proximity to the second surface 5 further away from the third side surface 53 This area is arranged below as a third area. 57 designated. The third area 57 can be arranged in such a way that it forms an end section of the first side surface 27 has which is located on one side of the third face 53 is arranged as in Fig. 6 shown.
[0069] At least part of an outer circumferential edge of the first side surface 27 , which are on one side of the third face 53 is arranged, can be in the third area 57 It must be included. The portion of the outer perimeter of the first face. 27 , which is in the third area 57 is contained, can be increased with increasing proximity to the second surface 5 further away from the third side surface 53 be arranged.
[0070] As in Fig. As shown in Figure 1, a second curved surface can be shown. 59 , which has a convexly curved surface shape, between the first side surface 27 and the third side surface 53 be arranged. The second curved surface 59 can between the second corner 13 and the second area 5 be arranged as in the Fig. 1. A boundary part C3 between the first side surface 27 and the second curved surface 59 can increase with increasing proximity to the second surface 5 further away from the third side surface 53 be arranged as in the Fig. 4 embodiment shown. In particular, the boundary part C3 can extend obliquely in a direction from the upper left to the lower right, as in the embodiment shown in Fig. 4 illustrated embodiment.
[0071] The part of the first side surface 27, which is in the third area 57 is contained, can be increased with increasing proximity to the second surface 5 further away from the third side surface 53 be arranged. In other words, the part of the outer perimeter of the first side surface can be 27 , which is in the third area 57 is contained, with increasing proximity to the first surface 3 closer to the third side surface 53 be arranged.
[0072] The deployment 1 tends to be held stably by the holder, even when a large thrust force (force in one direction from the fourth corner) is applied. 41 towards the second corner 13 ) to the second corner cutting edge 51 during the cutting process of the workpiece using the second corner cutting edge 51 is exercised.
[0073] The side surface 7 Furthermore, a third connecting surface can be used. 61exhibit the third connecting surface 61 can in an area of the side surface 7 be arranged along the first corner 11 is arranged, and can be used with the first corner 11 be connected, as in Fig. 1 shown. The third connecting surface 61 can be used in the Fig. 1 illustrated embodiment between the first corner 11 and the first curved surface 33 be arranged.
[0074] The third connecting surface 61 can in the cross-section that follows the central axis O1 includes, obliquely or parallel to the central axis O1 get lost. Fig. 12 corresponds to the cross-section with the central axis O1 and shows a third imaginary straight line O1''' parallel to the central axis 01. The third connecting surface 61 For example, it can be inclined in such a way that it becomes steeper with increasing distance from the first corner. 11in the above cross-section from the central axis O1 (the third imaginary straight line O1''' away.
[0075] If the third connecting surface 61 As described above, it is inclined and has a cutting tip of the first corner cutting edge. 25 a great thickness and increased strength. The application 1 due to the increased strength of the first corner cutting edge 25 , which is subjected to a relatively large cutting load, improved durability.
[0076] In cases where the side surface 7 the third connecting surface 61 exhibits the third connecting surface 61 a fourth area 63 exhibit. The fourth area 63 can increase with increasing distance from the first page 17 a larger angle of inclination relative to the central axis O1 exhibit. If the third connecting surface 61 the fourth area 63exhibits the strength of the second cutting edge 23 be increased while the cutting tip of the first cutting edge 21 is kept sharp.
[0077] The first area 3 can a bridge surface 65 and an inclined surface 67 exhibit, as in the case of the Fig. 2 illustrated embodiment. The web surface 65 can along the first page 17 , the second page 19 and the first corner 11 be arranged. This can be reformulated to mean that the area 65 along the first cutting edge 21 , the second cutting edge 23 and the first corner cutting edge 25 in a Fig. The cutting edge is arranged as shown in the embodiment 9. 9 has increased durability when the first surface 3 the bridge surface 65 exhibits.
[0078] The inclined surface67 can along the bridge surface 65 be arranged. The inclined surface 67 can be used in the Fig. 2. In the embodiment shown, further within the first area 3 be arranged as the bridge surface 65 The inclined surface 67 can be closer to the reference plane S1 be arranged as they extend from the bridge surface 65 removed. On the inclined surface 67 in the first area 3 It could be the chip surface area, as described above.
[0079] If the first area 3 the inclined surface 67 It has a surface that can serve as a chipping surface, making it easy to control the direction of chip flow from the cutting edge. 9 generated during the cutting process, resulting in improved chip removal performance. The angle of inclination of the inclined surface 67can be greater than the angle of inclination of the web surface 65 As used herein, the term "angle of inclination of each of the web surfaces" refers to 65 and the inclined surface 67" at an angle relative to the reference plane S1 .
[0080] The deployment 1 can a through hole 69 exhibiting areas that lead into regions located on opposite sides of the side surface 7 are arranged, in particular the second side surface 29 and the fourth face 55 , as in the Fig. 1. A central axis. O1 of the through hole 69 can be inclined or orthogonal to the central axis O1 the deployment 1 get lost.
[0081] The through hole 69 It can be used, for example, to attach a screw to the insert. 1to be attached to the holder. Instead of the screw, a clamping element can also be used to secure the insert. 1 can be used on the holder.
[0082] Although the through hole 69 in the Fig. 1 in the illustrated embodiment opens into the areas that are on the opposite sides of the side surface 7 are arranged, it is not intended to be the through-hole 69 to limit it to the above configuration. For example, the through-hole 69 from the center of the first area 3 towards the center of the second area 5 be trained.
[0083] As a material of use 1 For example, cemented carbide and cermet can be used. Examples of cemented carbide compositions include WC-Co, WC-TiC-Co, and WC-TiC-TaC-Co, where WC, TiC, and TaC are hard particles and Co is a binder phase.
[0084] Cermet is a sintered composite material obtained by assembling metal into a ceramic component. Examples of cermet include titanium compounds, primarily composed of titanium carbide (TiC) or titanium nitride (TiN). However, it is not intended to be the material of the insert. 1 to limit it to the composition mentioned above.
[0085] An area of deployment 1 It can be coated with a layer using either chemical vapor deposition (CVD) or physical vapor deposition (PVD). Examples of coating compositions include titanium carbide (TiC), titanium nitride (TiN), titanium carbonitride (TiCN), and aluminum oxide (Al₂O₃). <schneidwerkzeuge>
[0086] A cutting tool 101 In one embodiment, the following refers to Fig. 13 and Fig. 14 described. Fig. 13 and Fig. 14 show a state in which the in Fig. 1. Depiction using a screw 107 on a bag 105 a holder 103 is attached. A rotation axis Y1 of the cutting tool. 101 is in Fig. 13 indicated by a two-dot dashed line or similar.
[0087] The cutting tool 101 In the present embodiment, it can be used for a milling operation. The cutting tool 101 can the holder 103 and exhibit the use, as in Fig. 13 shown. The holder 103 It has a column-like shape that extends from a first end to a second end along a rotational axis Y1. The holder 103 can a bag 105 have a feature located on one side of the first end. The insert can be placed in the pocket. 105 be arranged.
[0088] The holder 103 can only one bag 105 or alternatively, a number of bags 105 exhibit, as in a Fig. 13 illustrated embodiment. If the holder 103 the bags 105 The cutting tool can 101 have multiple inserts, and the inserts can be individually placed in the pockets 105 be arranged.
[0089] The bag 105 can extend into an outer circumferential surface of the holder 103 and open an end face on one side of the first end. In cases where the holder 103 the bags 105 These bags have 105 They may be arranged at equal or unequal intervals around the axis of rotation Y1. This can be seen, for example, from the fact that the holder 103 the bags 105 exhibits, the holder 103 not strictly columnar.
[0090] The deployment 1 can be attached to the bag 105 It would be advisable that at least part of the cutting edge is removed from the holder. 103 is in charge. In particular, the use 1 in the present embodiment so attached to the holder 103 It must be secured so that the second cutting edge is positioned further outwards than the outer circumferential surface in the holder and the first cutting edge protrudes from the holder. 103 protrudes in the direction of a workpiece.
[0091] At least one flat surface area in the second surface and the side surface in use can be in the cutting tool. 101 of the present embodiment in contact with the holder 103 be.
[0092] In the present embodiment, the insert can be used with a screw. 107 on the bag 105 be attached. In particular, the insert can be attached to the holder. 103 can be fastened by the screw 107 is inserted into a screw hole of the insert and by a front end of the screw 107 into a bag 105 a trained screw hole is inserted to secure the screw 107 to attach to the screw hole.
[0093] As a material of the holder 105 Steel or cast iron, for example, can be used. Of these materials, the use of steel particularly contributes to the holder's toughness. 105 to increase. <Verfahren zur Herstellung eines maschinell bzw. spanabhebend bearbeiteten Produkts>
[0094] A method for producing a machined product in a non-limiting aspect of the present disclosure is described below with reference to the Fig. 15 to Fig. 17 described. Fig. 15 to Fig. Figure 17 shows a method for producing a machined product in a cutting operation using the above cutting tool. The axis of rotation O2 of the cutting tool 101 is in the Fig. 15 to Fig. 17 is indicated by a two-dot dashed line. The machined product 203 is producible by the cutting process of the workpiece 201 is carried out.
[0095] The process for manufacturing the machined product may include the following steps: (1) Rotating the cutting tool 101 , as represented by the preceding embodiment, (2) Bringing the rotating cutting tool 101 in contact with the workpiece 201 , and (3) Moving the cutting tool 101 from the workpiece 201 away.
[0096] Specifically, the cutting tool can first be used. 101 relatively close to the workpiece 201 be brought forward while the cutting tool 101 in the Y direction around the axis of rotation O2 rotates, as in Fig. 15 shown. The workpiece 201 It can then be cut by using the cutting edge of the cutting tool. 101 in contact with the workpiece 201 is brought about as in Fig. 16 is shown. The cutting tool can then be used. 101 relative to the workpiece 201 be moved away, as in Fig. 17 shown.
[0097] The workpiece 201 can be fixed and the cutting tool 101 can move close to the workpiece 201 be brought in. The workpiece 201 can be fixed, and the cutting tool 101 can around the axis of rotation O2 be rotated, as in a Fig. 15 to Fig. 17 illustrated embodiment. The workpiece 201 can be fixed and the cutting tool 101 can be moved away, as in the Fig. 17 illustrated embodiment.
[0098] During the Fig. 15 to Fig. In the embodiment shown in 17, the workpiece 201 fixed and the cutting tool is 101 in each of the steps. However, it is not intended to be limited to this embodiment.
[0099] For example, the workpiece 201 in step ( 1 ) near the cutting tool 101 can be brought in. Similarly, the workpiece can be brought in. 201 in step ( 3 ) from the cutting tool 101 be moved away. If the cutting process is to continue, the step of bringing the cutting edge of the insert into contact with different sections of the workpiece can be repeated. 201 be repeated while the cutting tool 101 The rotated position remains.
[0100] Representative examples of the workpiece material 201 They contain unalloyed steel, alloyed steel, stainless steel, cast iron and non-ferrous metals. Reference symbol list 1 cutting insert (insert) 3 first area 5 second area 7 side surface 9 cutting edge 11 first corner 13 second corner 15 third corner 17 first page 19 second page 21 first cutting edge 23 second cutting edge 25 first corner cutting edge 27 first side surface 29 second side surface 31 first area 33 first curved surface 35 second area 37 first connecting surface 39 second connecting surface 41 fourth corner 43 third page 45 fourth page 47 third cutting edge 49 fourth cutting edge 51 second corner cutting edge 53 third side surface 55 fourth side surface 57 third area 59 second curved surface 61 third connecting surface 63 fourth area 65 mm of bridge surface 67 inclined surface 69 Through hole 101 Cutting tool 103 holders 105 bag 107 screw 201 workpiece 203 machined product O1 Central axis O2 axis of rotation Y direction of rotation S1 reference plane W1 first width W2 second width QUOTES INCLUDED IN THE DESCRIPTION
[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature
[0000] JP 2018199365
[0001] JP 200798506
[0003] < / schneidwerkzeuge>
Claims
[1] A cutting insert comprising: a first surface that has a polygonal shape, a second surface, which is arranged on one of the sides opposite the first surface, and a side surface that is arranged between the first surface and the second surface, wherein the first surface a first corner, a second corner, which is adjacent to the first corner, a third corner, which is adjacent to the first corner, a first side, which is positioned between the first corner and the second corner, and a second side, positioned between the first corner and the third corner, the side surface a first side surface, at least part of which is arranged between the first side and the second surface, and a second side surface, at least part of which is arranged between the second side and the second surface, In a front view of the first surface, the first side surface is positioned further outwards than the first side, and the first side surface has a first area which, with increasing proximity to the second surface, is located closer to the second side surface. [2] The cutting insert according to claim 1, wherein the first side is shorter than the second side. [3] The cutting insert according to claim 1 or 2, wherein in a front view of the first side surface at least a part of the first area is arranged between the first corner and the second surface. [4] The cutting insert according to one of claims 1 to 3, wherein an imaginary straight line passing through a center point of the first surface and a center point of the second surface, is a central axis, and the first side surface in a cross-section that includes the central axis runs parallel to the central axis. [5] The cutting insert according to any one of claims 1 to 4, wherein the second side surface is positioned further outwards in a front view of the first surface than the second surface, and the second side surface has a second area which is located closer to the first side surface as the proximity to the second surface increases. [6] The cutting insert according to any one of claims 1 to 5, wherein in a front view of the second side surface at least a part of the second area is arranged between the first corner and the second surface. [7] The cutting insert according to any one of claims 1 to 6, wherein an imaginary straight line passing through a center point of the first surface and a center point of the second surface, is a central axis, and the second side surface in a cross-section that includes the central axis, runs parallel to the central axis. [8] The cutting insert according to any one of claims 1 to 7, wherein an imaginary straight line passing through a center point of the first surface and a center point of the second surface, is a central axis, a width of the first side surface in a direction parallel to the central axis is a first width, a width of the second side surface in the direction parallel to the central axis is a second width, and the second width is greater than the first width. [9] The cutting insert according to any one of claims 1 to 8, wherein the side surface also has a first connecting surface that adjoins the first side, an imaginary straight line passing through a center point of the first surface and a center point of the second surface, is a central axis, and the first connecting surface in a cross-section enclosing the central axis runs parallel to the central axis. [10] The cutting insert according to claim 9, wherein in a front view of the first side surface the width of the first connecting surface in a direction parallel to the central axis increases with increasing proximity to the first corner. [11] The cutting insert according to any one of claims 1 to 10, wherein the side surface also has a second connecting surface that adjoins the second side, an imaginary straight line passing through a center point of the first surface and a center point of the second surface, is a central axis, and the second connecting surface has a part which is inclined such that, in a cross-section enclosing the central axis, it is arranged away from the central axis with increasing distance from the second side. [12] The cutting insert according to claim 11, wherein in a front view of the second side surface the width of the second connecting surface increases in a direction parallel to the central axis with increasing proximity to the first corner. [13] The cutting insert according to any one of claims 1 to 12, wherein the first surface further comprises a fourth corner, which is adjacent to the second corner, and a third side which is arranged between the second corner and the fourth corner, the side surface further having a third side surface of which at least a part is arranged between the third side and the second surface, and the first side surface having a third area which is arranged away from the third side surface with increasing proximity to the second surface. [14] The cutting insert according to any one of claims 1 to 13, wherein the side surface also has a third connecting surface that adjoins the first corner, an imaginary straight line passing through a center point of the first surface and a center point of the second surface, is a central axis, and the third connecting surface is inclined such that, in a cross-section enclosing the central axis, it is arranged with increasing distance from the first corner away from the central axis. [15] The cutting insert according to any one of claims 1 to 14, wherein the third connecting surface has a fourth area whose angle of inclination relative to the central axis increases with increasing distance from the first side. [16] A cutting tool comprising: a holder having a column-like shape extending from a first end to a second end along an axis of rotation, and having a pocket arranged on one side of the first end, and the cutting insert according to one of claims 1 to 15, wherein the cutting insert is arranged in the pocket. [17] A method for producing a machine-made product, comprising: Rotating the cutting tool according to claim 16, bringing the rotating cutting tool into contact with a workpiece, and Moving the cutting tool away from the workpiece.