Cutting insert, cutting tool and method for producing a machine-made product

Abstract

A cutting insert (1) comprising: a base part (3) with an upper side surface (13) and a lower side surface (15) and a cutting part (5) projecting from the base part (3) towards a first end (1a), the cutting part (5) comprising: an upper surface (17) extending from the upper side surface (13) to the first end (1a), a first side surface (19) arranged on one side of the first end (1a) and adjacent to the upper surface (17), a second side surface (21) adjacent to the first side surface (19) and the upper surface (17), a third side surface (23) adjacent to the first side surface (19) and the upper surface (17) and arranged on one side opposite the second side surface (21), a first comb line (27) arranged at an intersection of the upper surface (17) and the first side surface (19), a second Ridge line (29),a third ridge line (33) arranged at an intersection of the upper surface (17) and the second side surface (21), a first cutting edge (35) arranged at the first ridge line (27), and a second cutting edge (37) arranged at the second ridge line (29), wherein the upper surface (17) has a first inclined surface (41) arranged along the first ridge line (27) and inclined downwards away from the first ridge line (27), a pair of projections (43) arranged side by side in one direction along the first ridge line (27) on the first inclined surface (41), and a first raised portion (45) arranged along the third ridge line (33) on a side that is further away from the first ridge line (27) than the pair of projections (43).wherein the second cutting edge (37) is inclined downwards away from the first ridge line (27), wherein an upper end of the first raised part (45) is arranged above the second cutting edge (37), wherein the first raised part (45) has an upper end surface (47) and, in plan view, the upper end surface (47) is arranged away from the second ridge line (29) with increasing distance from the first ridge line (27), and wherein the upper end surface (47) is inclined downwards away from the first ridge line (27) and, in a side view, the upper end surface (47) is arranged parallel to the second cutting edge (37) from one side of the second side surface (21).

Description

CROSS-REFERENCE TO RELATED REGISTRATION

[0001] The present application claims priority over Japanese patent application No. 2018-128979, filed on July 6, 2018. The entire contents of that application are incorporated herein by reference. TECHNICAL AREA

[0002] The present embodiments relate to cutting inserts for use in a cutting process. BACKGROUND

[0003] For example, a cutting insert described in the unexamined Japanese patent application publication No. 2-106204 (Patent Document 1) was used for turning a workpiece, e.g., metal. The insert described in Patent Document 1 is suitable for both grooving and parting-off operations. The insert described in Patent Document 1 has a main cutting edge, secondary cutting edges arranged on both sides of the main cutting edge, a rake face arranged along the main cutting edge and the secondary cutting edges, and a projecting breaker located in the rake face. The projecting breaker is formed by a central projection and lateral projections. BRIEF EXPLANATION

[0004] A cutting insert, as described in non-limiting aspects of the present disclosure, comprises a base part and a cutting part. The base part has an upper and a lower side surface. The cutting part projects from the base part to a first end. The cutting part comprises an upper surface, a first side surface, a second side surface, a third side surface, a first ridge line, a second ridge line, a third ridge line, a first cutting edge, and a second cutting edge. The upper surface extends from the upper side surface toward the first end. The first side surface is located on one side of the first end and is adjacent to the upper surface. The second side surface is located adjacent to the first side surface and the upper surface. The third side surface is located adjacent to the first side surface and the upper surface and is located on one side opposite the second side surface.The first ridge line is located at the intersection of the top surface and the first side surface. The second ridge line is located at the intersection of the top surface and the second side surface. The third ridge line is located at the intersection of the top surface and the third side surface. The first cutting edge is located on the first ridge line. The second cutting edge is located on the second ridge line.

[0005] The upper surface has a first inclined surface, a pair of projections, and a first raised portion. The first inclined surface is located along the first ridge line and slopes downwards away from the first ridge line. The pair of projections is arranged side by side in one direction along the first ridge line on the first inclined surface. The first raised portion is located along the third ridge line on a side that is farther from the first ridge line than the pair of projections. The second cutting edge slopes downwards away from the first ridge line. An upper end of the first raised portion is located above the second cutting edge. List of characters Fig. Figure 1 is a perspective view showing a cutting operation in non-restrictive aspects of the present disclosure, Fig. 2 is a front view of the in Fig. 1. Cutting insert shown, viewed from one side of an upper surface, Fig. 3 is a side view of the in Fig. 2. Cutting insert shown, viewed from an A1 direction, Fig. 4 is a side view of the in Fig. 2. Cutting insert shown, viewed from an A2 direction, Fig. 5 is an enlarged view of one in Fig. 1 of the area B1 shown, Fig. 6 is an enlarged view of one in Fig. 2 of the area B2 shown, Fig. 7 is an enlarged view of one in Fig. 3 of the area shown B3, Fig. 8 is an enlarged view of one in Fig. 4 of the area shown, B4, Fig. 9 is a cross-sectional view along line IX-IX of the in Fig. 2 shown cutting insert, Fig. Figure 10 is a cross-sectional view along line XX in which Fig. 2 shown cutting insert, Fig. Figure 11 is a cross-sectional view along line XI-XI in which Fig. 2 shown cutting insert, Fig. 12 is a cross-sectional view along line XII-XII in which in Fig. 6 shown cutting insert, Fig. 13 is a cross-sectional view along line XIII-XIII in which in Fig. 6 shown cutting insert, Fig. 14 is a cross-sectional view along line XIV-XIV in which in Fig. 6 shown cutting insert, Fig. Figure 15 is a perspective view of a cutting tool in non-restrictive aspects of the present disclosure, Fig. 16 is an enlarged view of one in Fig. 15 shown area B5, Fig. Figure 17 is a schematic representation showing one of the steps in a process for producing a machined product in non-restrictive aspects of the present disclosure. Fig. Figure 18 is a schematic representation showing one of the steps in the process for producing a machined product in the non-restrictive aspects of the present disclosure, and Fig. Figure 20 is a schematic representation showing one of the steps in the process for manufacturing a machined product in the non-restrictive aspects of the present disclosure. EXECUTION FORMS

[0006] There is a need for the insert (cutting insert) to be usable not only for grooving and parting-off operations, but also for operations where the feed direction is along a main cutting edge, such as cross-cutting. The tip described in patent document 1 is insufficient in terms of chip removal performance in operations where the feed direction is along the main cutting edge. Therefore, it is necessary for the insert to also be usable for operations where the feed direction is along the main cutting edge. <Einsätze>

[0007] The cutting insert 1 In non-restrictive embodiments, the following section describes in detail with reference to the drawings. The cutting insert is described below. 1also simply referred to as "Insert 1". For the sake of clarity, the following drawings only show, in simplified form, the main elements necessary to describe the embodiments. The insert 1 It is therefore capable of incorporating any structural element not shown in the aforementioned drawings. The dimensions of the elements in the individual drawings do not accurately represent either the dimensions of the actual structural elements or the dimensional relationships of these elements.

[0008] The deployment 1 In the embodiments, a base part can be used. 3 and a cutting part 5 , as in Fig. 1 shown, or similar. The basic part 3 can be used as a part that is held by a holder when the application 1 is attached to the holder.

[0009] The cutting part 5A cutting part is a component that comes into contact with the workpiece during a cutting process and can be used as a part that plays a key role in the cutting process. One or more cutting parts. 5 may be planned. The deployment 1 can have two cutting parts 5 exhibit, as in the Fig. 1. Non-restrictive embodiment shown.

[0010] A form of the base part 3 is not limited to a specific configuration. The basic part 3 It can, for example, have a rod shape, a polygonal slab shape, or a polygonal column shape. The base part 3 can have a square plate shape, as in the non-restrictive embodiment in Fig. 1 shown.

[0011] The basic part 3 can a first main area 7 , a second main area 9 and a through hole 11 exhibit, as in the Fig. 1. Non-restrictive embodiment shown. As in a non-restrictive embodiment in Fig. 3 can be the first main area 7 have a rectangular shape. The second main surface 9 can be on one side opposite to the first main area 7 be arranged and can have a square shape similar to the first main surface 7 have.

[0012] The through hole 11 can enter the first main area 7 and the second main area 9 flow, as in the Fig. 1. Non-restrictive embodiment shown. The through-hole 11 can be incorporated into a middle section of the first main area 7 and a middle section of the second main area 9 to flow into.

[0013] The through hole 11 can be used to secure the insert 1 can be used on the holder. For example, if the insert 1when attached to the holder, the insert 1 by inserting a screw into the through hole 11 to be attached to the holder.

[0014] The basic part 3 can a top side surface 13 and a lower side surface 15 exhibit the upper side surface 13 and the lower side surface 15 Each of these can be a flat surface. The upper side surface 13 and the lower side surface 15 They can be arranged parallel to each other along the length of the insert. The upper side surface 13 and the lower side surface 15 can form part of a side part that is in the base part 3 between the first main area 7 and the second main area 9 is arranged as in the Fig. 1. Non-restrictive embodiment shown.

[0015] The upper side surface 13 in the basic part3 The present embodiment can be arranged such that the upper side surface 13 an upper end in use 1 is when the deployment 1 as described later, it is attached to the holder. The lower side surface 15 in the basic part 3 The present embodiment can be arranged such that the lower side surface 15 a lower end in use 1 is when the deployment 1 as described later, it is attached to the holder.

[0016] One size of the base part 3 is not particularly limited. A maximum width of the base part 3 in one direction from the first main surface 7 to the second main area 9 (a direction to the side in Fig. 2) can be set, for example, to approximately 2.9–4.1 mm. A width of the base part 3 in one direction of extension of the base part 3 (a direction to the side in Fig. 3) can be set to approximately 8-20 mm, for example.

[0017] The deployment 1 can have two cutting parts 5 exhibit, as in the Fig. 1. Non-restrictive embodiment shown. The shapes of these two cutting parts 5 are not limited to a specific configuration. The cutting parts 5 They can, for example, have a rod shape, a polygonal plate shape, or a polygonal column shape. The shapes of the two cutting parts 5 can have a triangular plate shape, as in the one in Fig. 3 shown in the non-restrictive embodiment. The base part 3 and the cutting parts 5 in use 1 can be formed individually or in one piece.

[0018] A width W1 of the cutting part 5 in the direction from the first main surface 7 to the second main area 9 can be smaller than a width W2 of the base part 3in the direction from the first main surface 7 to the second main area 9 If the width W2 of the base part 3 Since it is relatively large, it is easy to determine the thickness of the base part. 3 to ensure this. This facilitates the stable attachment of the insert. 1 on the holder.

[0019] If the width W1 of the cutting part 5 Being relatively small ensures a high degree of freedom in the machining width during a workpiece cutting operation. If the base part 3 and the cutting part 5 As described above, they are of different widths, which can form an area for the base part. 3 and an area for the cutting part 5 in use 1 be separated by parts of different widths.

[0020] One of the two cutting parts 5 The first cutting part can be 5a and the other can be a second cutting part 5b, as in the Fig. 3. Non-restrictive embodiment shown. The first cutting part 5a and the second cutting part 5b each protrude from the base part. 3 before. As in the non-restrictive embodiment in Fig. As shown in section 3, the first cutting part 5a is positioned to the left of the base part. 3 The second cutting part 5b is positioned to the right of the base part. 3 before.

[0021] Below is an end section in use on a left side. 1 , on which the first cutting part 5a is arranged, a first end 1a, and is an end section on a right side in use 1 , on which the second cutting part 5b is arranged, a second end 1b.

[0022] The first cutting element 5a and the second cutting element 5b can protrude in opposite directions. The first cutting element 5a and the second cutting element 5b can be arranged such that they are rotationally symmetrical about a central axis X1 of the through-hole.11 are arranged, and can have roughly the same configuration when deployed 1 from one side of the first main area 7 is viewed from the perspective of the viewpoint.

[0023] A configuration of the first cutting part 5a of the two cutting parts 5 , which is from the base part 3 The section protruding to the left is described in detail below, while a description of the second cutting part 5b of the two cutting parts 5 , which is from the base part 3 The section protruding to the right is omitted.

[0024] The first cutting part 5a can be an upper surface 17 , a first side surface 19 , a second side surface 21 , a third side surface 23 and a lower surface 25 exhibit, as in a non-restrictive embodiment in Fig. 4 shown. The upper surface 17 can be used with the upper side surface 13 of the base part 3be connected and can be accessed from the upper side surface 13 protrude towards the first end 1a, as in the Fig. 3 non-restrictive embodiment shown.

[0025] The first side surface 19 can be arranged on one side of the first end 1a and can be attached to the upper surface 17 adjacent, as in the Fig. 3, non-restrictive embodiment shown. The second side surface 21 can be attached to the first side surface 19 and the upper surface 17 adjacent, as in the Fig. 3, non-restrictive embodiment shown. The second side surface 21 can be connected to the first main surface of the base part 3 be connected and can be accessed from the first main surface 7 protrude towards the first end 1a.

[0026] The first side surface 19 and the second side surface 21can have an approximately planar shape, as in a non-restrictive embodiment, which in Fig. 5 is shown. The first side surface 19 can be directly connected to the second side surface 21 They must be connected. Alternatively, a curved surface can be placed between them, forming the first side surface. 19 and the second side surface 21 connects.

[0027] The third side surface 23 can be attached to the first side surface 19 and the upper surface 17 adjacent and on one of the second side surfaces 21 opposite side, as in a non-restrictive embodiment in Fig. 6 shown. The third side surface 23 can be used with the second main area 9 of the base part 3 be connected and can be accessed from the second main surface 9 protrude towards the first end 1a. The third side face 23can have an approximately flat surface shape.

[0028] The lower surface 25 can be attached to the upper surface 17 adjacent by placing the first side surface between them 19 , the second side surface 21 and the third side surface 23 are inserted as in the Fig. 1. Non-restrictive embodiment shown. The lower surface 25 can be used with the lower side surface 15 of the base part 3 be connected and can be accessed from the lower side surface 15 protrude towards the first end 1a.

[0029] The first cutting part 5a can form a first ridge line 27 , a second ridge line 29 and a third ridge line 33 exhibit the first ridge line 27 can at an intersection of the upper surface 17 and the first side surface 19 be arranged as in the Fig. 2 shown in the non-restrictive embodiment. The second ridge line 29 can at an intersection of the upper surface 17 and the second side surface 21 be arranged as in the non-restrictive embodiment in Fig. 2 shown. The third ridge line 33 can at an intersection of the upper surface 17 and the third side surface 23 be arranged as in the non-restrictive embodiment in Fig. 2 shown.

[0030] The first cutting part 5a can form a first cutting edge 35 and a second cutting edge 37 exhibit the first cutting edge. 35 can at least along part of the first ridge line 27 be arranged. For example, the first cutting edge can be 35 along the entire or part of the first ridge line 27 be arranged. The first cutting edge 35is along the entire first ridge line 27 in the Fig. 2 as shown in the non-restrictive embodiment.

[0031] The second cutting edge 37 can at least along part of the second ridge line 29 be arranged. The second cutting edge 37 can, for example, occur along the entire or part of the second ridge line 29 be arranged. The second cutting edge 37 is on part of the second ridge line 29 in the Fig. 2 as shown in the non-restrictive embodiment.

[0032] The second cutting edge 37 can be arranged in such a way that it at least forms an end section of the second ridge line 29 including the one located on one side of the first end 1a. In this case, in the Fig. 2 in the non-restrictive embodiment shown, the second cutting edge 37with the first cutting edge 35 be connected. The first side surface 19 and the second side surface 21 can have an approximately flat surface shape, and the first cutting edge 35 and the second cutting edge 37 can have an approximately straight shape, as in the Fig. 5 non-restrictive embodiment shown.

[0033] The first cutting edge 35 It can be used as a cutting edge, which plays an important role, for example, when piercing or parting off. In this case, the second cutting edge can 37 can be used as a cutting edge that complements the cutting process with the first cutting edge. 35 supported. Alternatively, the second cutting edge can be used. 37 as a cutting edge, which plays an important role, for example, in a cross-cutting process. In this case, the first cutting edge can be 35can be used as a cutting edge, which extends the cutting process using the second cutting edge. 37 supports.

[0034] The second cutting edge 37 can from the first ridge line 27 be inclined downwards, as in a non-restrictive embodiment which is in Fig. 7 is shown. When the second cutting edge 37 The configuration above tends to be from the second cutting edge. 37 The generated chips are forced to flow in a direction away from the first end 1a. This leads to improved chip removal at the second end 1b.

[0035] The first cutting part 5a can also have a third cutting edge. 39 exhibit features that at least on part of the third ridge line 33 is arranged. For example, the third cutting edge can 39 be arranged in such a way that they at least form an end section of the third ridge line 33exhibits, which is arranged on one side of the first end 1a. When the third cutting edge 39 If arranged in this way, the third cutting edge can 39 with the first cutting edge 35 be connected.

[0036] If the third side surface 23 which has an approximately flat surface shape, the third cutting edge can 39 have an approximately straight shape. When the first cutting edge 35 The third cutting edge, which plays a key role, is used as a cutting edge. 39 used as a cutting edge, which completes the cutting process with the first cutting edge 35 supports.

[0037] Although in the present embodiment the first side surface 19 and the second side surface 21 having the shape of a flat surface, the upper surface can 17a portion with a concave-convex shape instead of a flat surface. In particular, the upper surface may 17 a first inclined surface 41 , a pair of protrusions 43 and a first sublime part 45 exhibit.

[0038] The first inclined surface 41 can along the first ridge line 27 be arranged and from the first ridge line 27 be inclined downwards. The first inclined surface 41 can serve as a so-called rake surface. For example, if the first inclined surface 41 When the rake face serves, a chip flow direction becomes stable by the first cutting edge 35 produced chips with the first inclined surface 41 come into contact. The first inclined surface 41 It can have a flat or curved surface shape. In the Fig. In the non-restrictive embodiment shown in section 5, the first inclined surface 41 the shape of a flat surface.

[0039] The pair of protrusions 43 can run side by side in one direction along the first ridge line 27 on the first inclined surface 41 be arranged. The projections 43 can serve as a so-called breaker ledge. For example, if the pair of ledges 43 Serving as a crusher protrusion, the first cutting edge can 35 chips produced from a direction perpendicular to the first cutting edge 35 They can be considered bent by bending the chips with the pair of projections. 43 come into contact. This contributes to stabilizing the chip flow direction.

[0040] The first sublime part 45 can along the third ridge line 33 be arranged on a side that is further away from the first ridge line 27is arranged further away than the pair of projections 43 The first sublime part 45 can be distinguished between the pair of protrusions 43 in a side view from one side of the first side surface 19 be arranged. If the first raised part 45 As described above, chips arranged from the first cutting edge tend to 35 are generated and between the pair of projections 43 to pass through, to the first sublime part 45 to be curved. This leads to improved chip removal performance.

[0041] In particular, a terminal section can 45b of the first sublime part 45 , which is arranged on one side of the first end 1a, between the pair of projections 43 be arranged as in a non-restrictive embodiment which is in Fig. 6 is shown. In this case, the first raised part can 45from the third ridge line 33 be arranged remotely. If the end section 45b on the side of the first end 1a on the first raised part 45 As described above, the chips that come from the first cutting edge tend to be arranged. 35 are generated and between the pair of projections 43 to pass through, to the first sublime part 45 to be bent over.

[0042] In use 1 In the present embodiment, the upper end can 45a of the first sublime part 45 above the second cutting edge 37 be arranged. In other words, the upper end can 45a of the first sublime part 45 above the second cutting edge 37 be arranged, and the upper end 45a of the first sublime part 45 can be viewed from one side of the second side surface in a side view 21from being visible, as in a non-restrictive embodiment which is in Fig. 7 is shown.

[0043] When the first sublime part 45 The configuration above tends to be from the second cutting edge. 37 the resulting shavings remained constant with the first raised part 45 to come into contact. Consequently, those from the second cutting edge tend to 37 The chips produced are wound in a consistent manner, resulting in improved chip removal performance.

[0044] The second cutting edge 37 can from the first ridge line 27 be inclined downwards, and the upper end 45a of the first sublime part 45 can above the second cutting edge 37 be arranged as shown above in use 1as described in the present embodiment. This facilitates the consistent removal of chips, which are produced from the first cutting edge. 35 and the second cutting edge 37 be generated.

[0045] The upper end section of the first raised part 45 It can be defined by a ridge line formed by the intersection of two surface areas, or alternatively by a surface. That is to say, the first raised part. 45 can a top end surface 47 exhibit, as in the Fig. 5, non-restrictive embodiment shown. The upper end surface 47 designates one of the surface areas that form a surface of the first raised part. 45 form the one that is closest to the upper end.

[0046] When the first sublime part 45 the upper end surface 47 exhibits, can be seen in a top view of the first raised part45 the upper end surface 47 from the second ridge line 29 with increasing distance from the first ridge line 27 be positioned far away. If the upper end face 47 The configuration above tends to be from the second cutting edge. 37 the resulting shavings were used on part of the first raised section. 45 , which is arranged near the first end 1a, remaining constant with the first raised part 45 to come into contact. Furthermore, it is easy to ensure a large space in which chips from the second cutting edge can be removed. 37 are produced and the chips are deposited on part of the first raised part. 45 The material located away from the first end 1a flows in a direction away from the first end 1a. This results in a further improved removal performance of the material from the second cutting edge. 37 produced chips.

[0047] The upper end of the upper end surface47 can above the upper ends 43a of the pair of projections 43 be arranged. A height of the upper end of the upper end surface 47 can be equal to the height of the upper end 43a of the pair of projections 43 be, as in the non-restrictive embodiment in Fig. 7 shown. The upper end of the upper end surface 47 is part of the upper end surface 47 , which is located at the very top and at the upper end 45a in the first sublime part 45 in the Fig. 7 corresponds to the embodiment shown. The upper ends 43a of the pair of protrusions 43 each corresponds to a part of the protrusions 43 , which is located at the very top.

[0048] If the upper ends 43a of the pair of projections 43 have the same height as the top end 45a of the first sublime part 45The shavings tend to stick to the protrusions. 43 as well as the first sublime part 45 to be wound consistently. This leads to further improved chip removal performance. The expression that "the upper ends 43a of the pair of projections 43 have the same height as the top end 45a The fact that the first raised part is 45" does not mean that both have exactly the same height. Even if there is a difference in height from the lower surface 15 to the top 43a and a height from the lower surface 15 to the top 45a Since the difference is approximately 0.05 mm, it can be assumed that both have the same height.

[0049] The upper end surface 47 can from the first ridge line 27 be inclined downwards, as in the Fig. 7, non-restrictive embodiment shown. If the upper end face 47The above configuration has the upper end section of the first raised part. 45 , which is arranged on one side of the first end 1a, a great height on a part of the first raised part 45 , which is located near the first end 1a. Consequently, those from the first cutting edge tend to 35 the resulting shavings remained constant with the first raised part 45 to get in touch.

[0050] It is easy to ensure a large space in which chips from the first cutting edge 35 are generated and the chips are produced in a direction away from the first end 1a at a part of the first raised part. 45 flow, which is located 1a away from the first end. This leads to a further improved output performance of the flow from the first cutting edge. 35 produced chips.

[0051] The upper end surface 47 and the second cutting edge 37can increase with increasing distance from the first ridge line 27 Each be inclined downwards, as in the Fig. 7, non-restrictive embodiment shown. The upper end surface 47 can be viewed from one side of the second side surface in a side view 21 parallel to the second cutting edge 37 get lost.

[0052] If the upper end surface 47 With the above configuration, it is less likely that part of the second cutting edge will be affected. 37 chips produced by the first raised part 45 is curved, and it is less likely that part of the second cutting edge will be affected. 37 produced chips over the first raised part 45 climbs. Therefore, chip flow tends to become smooth, and chip clogging is less likely.

[0053] The first sublime part 45 in the upper surface 17can come into contact with the second ridge line 29 be, or alternatively, can be from the second ridge line 29 be arranged remotely, as in the non-restrictive embodiment described in Fig. 6 is shown.

[0054] The first cutting edge 35 can maintain a constant height in relation to the lower side surface 15 have, without being inclined, or may with increasing distance from the second ridge line 29 Alternatively, it could be inclined downwards. The first cutting edge 35 is inclined downwards, as it extends from the second ridge line 29 in a non-restrictive embodiment removed, which in Fig. 8 is shown.

[0055] Below is an imaginary plane surface located at the center of the upper side surface. 13 and the lower side surface 15is arranged, a reference plane S1. As in the non-restrictive embodiments described in the Fig. 7 and Fig. Figure 8 shows an imaginary plane parallel to the reference plane S1, a secondary reference plane S2, and an inclination angle of the first cutting edge. 35 relative to the secondary reference plane S2 in a side view from one side of the first side surface 19 a first inclination angle of 91 and is an inclination angle of the second cutting edge 37 relative to the secondary reference plane S2 in a side view from one side of the second side surface 21 a second angle of inclination 92. The first angle of inclination 91 can be smaller than the second angle of inclination 92.

[0056] If the first helix angle 91 and the second helix angle 92 have the above relationship, this results in high chip removal efficiency. If the first helix angle 91 is relatively small, the chips from the first cutting edge tend to be 35The chips produced tend to flow towards the second end 1b. If the second inclination angle 92 is relatively large, the chips from the second cutting edge tend to flow towards the second end 1b. 37 The chips produced tend to flow towards the second end 1b. Therefore, the chips that originate from the first cutting edge tend to 35 and the second cutting edge 37 to be generated, to the second end 1b of the deployment 1 to flow.

[0057] The upper surface 17 can be a first corner 49 and a second corner 51 show the first corner 49 is a corner that is located at an intersection of the first ridge line 27 and the second ridge line 29 is arranged. The second corner 51 is a corner that is located at an intersection of the first ridge line 27 and the third ridge line 33 is arranged.

[0058] The first corner 49 and the second corner 51They don't have to be strict corners. The first corner 49 and the second corner 51 can be a corner when viewed at a glance, and can have a convex curved shape when viewed microscopically, as in the non-restrictive embodiment in Fig. 6 shown.

[0059] The pair of protrusions 43 can be viewed from above, showing the projections 43 a first lead 53 , which lies on a corner bisector L1 of the first corner 49 is arranged, and a second projection 55 exhibiting, which lies on a corner bisector L2 of the second corner 51 is arranged. For example, in the non-restrictive embodiment, which is in Fig. As shown in section 6, one of the protrusions 43 The first lead 53 and is the other one the second lead 55 .

[0060] If the pair of protrusions 43the initial lead 53 exhibits, which lies on the angle bisector L1 of the first corner 49 If it is arranged, it is less likely that the first cutting edge will 35 chips produced with those from the second cutting edge 37 The generated chips collide, and chip clogging is therefore less likely. This leads to improved chip removal performance. When the pair of protrusions 43 the second lead 55 exhibits, which lies on the angle bisector L2 of the second corner 51 If it is arranged, it is less likely that the first cutting edge will 35 chips produced with those from the third cutting edge 39 The generated chips collide, making chip clogging less likely. This leads to improved chip removal performance.

[0061] In cases where the pair of protrusions 43 the initial lead 53exhibits, can the first advantage 53 a first leading lead 53a and an initial lateral advantage 53b exhibit the first leading advantage 53a can be located on a side that is somewhat closer to the first ridge line 27 is arranged as the corner bisector L1 of the first corner 49 , and can be viewed from above as being in relation to the first ridge line 27 extend, as in the non-restrictive embodiment in Fig. 6 shown.

[0062] The first lateral advantage 53b can be located on a side that is somewhat closer to the second ridge line 29 is arranged as the corner bisector L1 of the first corner 49 , and can be viewed from above as the second ridge line 29 extend, as in the Fig. 6 shown in a non-restrictive embodiment.

[0063] If the first lead 53the first leading lead 53a exhibiting, those from the first cutting edge tend to 35 the resulting chips contributed to the initial lead 53a to be curved when approached from a direction perpendicular to the first cutting edge 35 This facilitates the stabilization of a flow direction from the first cutting edge. 35 produced chips 53 the first lateral advantage 53b exhibits those from the second cutting edge tend to 37 the resulting chips, through the first lateral projection 53b to be curved when from one to the second cutting edge 37 viewed in a perpendicular direction. This facilitates the stabilization of a flow direction from the second cutting edge. 37 produced chips.

[0064] If the first lead 53 the first leading lead 53aand the first lateral advantage 53b exhibits, it is possible to determine the distance from the first cutting edge. 35 and those from the second cutting edge 37 to consistently bend the generated chips. Improved chip evacuation performance can be achieved in a cutting operation where primarily either the first cutting edge is affected. 35 or the second cutting edge 37 is used. So if the first lead 53 the first leading lead 53a and the first lateral advantage 53b exhibits, the use 1 It is very versatile and can be used for carrying out cutting operations.

[0065] In cases where the initial advantage 53 the first leading lead 53a and the first lateral advantage 53b exhibits no particular limitation on the height of the first leading edge 53a and the first lateral projection 53bGiven. For example, an upper end 53aa of the initial lead 53a above an upper end 53ba of the first lateral protrusion 53b be arranged as in a non-restrictive embodiment in Fig. 13 shown. When the first leading edge 53a and the first lateral advantage 53b With the above configuration, a further improved chip removal performance can be achieved.

[0066] For example, if the upper end 53aa of the initial lead 53a above the upper end 53ba of the first lateral protrusion 53b If the chips are arranged in a certain way, they tend to be those that are from the first cutting edge. 35 be generated and gain the first leading advantage 53a flow, to that, over the first lateral protrusion 53b to climb. Accordingly, those from the first cutting edge tend to 35The resulting chips flowed towards the second end 1b.

[0067] If the upper end 53aa of the initial lead 53a above the upper end 53ba of the first lateral protrusion 53b If arranged, chips that are at the second cutting edge tend to 37 be generated and onto the first lateral projection 53b flow, to that, with the initial lead 53a to come into contact. Since the second cutting edge 37 produced chips with the first leading advantage 53a To avoid contact, it is possible to prevent the material from coming into contact with the second cutting edge. 37 excessively produced chips on one of the second side surfaces 21 flow to the opposite side, namely to one side of the third surface 23 It is therefore likely that these chips will be ejected in the direction of the second end 1b.

[0068] In cases where the pair of protrusions 43 the second lead 55 exhibits the second advantage 55 a second leading lead 55a and a second lateral advantage 55b exhibit the second leading advantage 55a can be located on a side that is somewhat closer to the first ridge line 27 is arranged as the corner bisector L2 of the second corner 51 , and can be viewed from above in the direction of the first ridge line 27 extend, as in the non-restrictive embodiment in Fig. 6 shown.

[0069] The second lateral advantage 55b may be located on a side that is somewhat closer to the third ridge line 33 lies as the corner bisector L2 of the second corner 51 , and can be viewed from above as the third ridge line 33extend further, as in the non-restrictive embodiment in Fig. 6 shown.

[0070] If the second lead 55 the second leading lead 55a exhibiting, those from the first cutting edge tend to 35 produced chips to, from the second leading position 55a to be curved when approached from a direction perpendicular to the first cutting edge 35 This facilitates the stabilization of the flow direction from the first cutting edge. 35 produced chips. If the second lead 55 the second lateral advantage 55b exhibits those from the third cutting edge 39 the resulting chips, through the second lateral projection 55b to be curved when from one to the third cutting edge 39 viewed in a perpendicular direction. This facilitates the stabilization of a flow direction from the third cutting edge.39 produced chips.

[0071] If the second lead 55 the second leading lead 55a and the second lateral lead 55b exhibits, it is possible to determine the distance from the first cutting edge. 35 and those from the third cutting edge 39 to consistently bend the generated chips. Therefore, improved chip removal performance can be achieved in a cutting operation where primarily either the first cutting edge is affected. 35 or the third cutting edge 39 is used. So if the second lead 55 the second leading lead 55a and the second lateral lead 55b exhibits, the use 1 It is very versatile and can be used for carrying out cutting operations.

[0072] In cases where the second lead 55 the second leading lead 55a and the second lateral lead 55bexhibits no particular height restriction for the second leading position 55a and the second lateral lead 55b Given. For example, an upper end 55aa of the second leading lead 55a above an upper end 55ba of the second lateral protrusion 55b be arranged as in a non-restrictive embodiment in Fig. 14 shown. If the second front lead 55a and the second lateral advantage 55b With the above configuration, a further improved chip removal performance can be achieved.

[0073] For example, if the upper end 55aa of the second leading lead 55a above the upper end 53ba of the second lateral protrusion 55b If the chips are arranged in a certain way, they tend to be those that are from the first cutting edge. 35 be generated and to the second leading position 55aflow, in addition, over the second lateral projection 55b to climb. Accordingly, the chips that come from the first cutting edge tend to climb. 35 to be generated, in order to flow towards the second end 1b.

[0074] If the upper end 55aa of the second leading lead 55a above the upper end 55ba of the second lateral protrusion 55b If arranged, chips that are on the third cutting edge tend to 39 be generated and onto the second lateral projection 55b flow, in addition, with the second leading lead 55a to come into contact. Since the third cutting edge 39 produced chips with the second leading edge 55a To avoid contact, it is possible to prevent the third cutting edge from coming into contact with the material. 39 produced chips excessively to one of the third side surfaces 23flow to the opposite side, namely to one side of the second surface 21 It is therefore likely that these chips will be ejected in the direction of the second end 1b.

[0075] The upper surface 17 may also have a second raised part 57 exhibiting, in plan view along the third ridge line 33 between the first sublime part 45 and the third ridge line 33 is arranged. In cases where the upper surface 17 the second sublime part 57 exhibits, as in the Fig. In the non-restrictive embodiment shown in section 5, chips can be produced even if they are from the second cutting edge. 37 produced chips over the first raised part 45 climb, on the second sublime part 57 They are curved. This leads to improved chip removal performance.

[0076] Especially when the upper end 57aof the second sublime part 57 above the upper end 45a of the first sublime part 45 If arranged, the chips can be placed on the second raised part. 57 The curve remains constant. This leads to a further improved chip removal rate.

[0077] In cases where the upper surface 17 the second sublime part 57 exhibits, as in the Fig. In the non-restrictive embodiment shown in section 6, the end section can 57b on one side of the first end 1a on the second raised part 57 further from the first ridge line 27 be positioned further away than the end section 45b on one side of the first end 1a on the first raised part 45 If the sublime part 45 and the second sublime part 57 As described above, those from the third cutting edge tend to be arranged. 39the resulting shavings remained constant with the first raised part 45 to get in touch.

[0078] If the upper surface 17 the second sublime part 57 exhibits, the second raised part 57 the third ridge line 33 contact or be removed from it, as in the non-restrictive embodiment in Fig. 6 shown.

[0079] For example, inorganic materials such as hard metal, cermet and ceramics are used as a material for application. 1usable. Examples of hard metal compositions include WC (tungsten carbide)-Co, WC-TiC (titanium carbide)-Co, and WC-TiC-TaC (tantalum carbide)-Co, where WC, TiC, and TaC are hard particles and Co is a binder phase. Cermet is a sintered composite material obtained by joining metal with a ceramic component. Examples of cermet include compounds formed mainly of TiC or TiN (titanium nitride). The insert material 1 is not limited to the materials mentioned above.

[0080] Alternatively, the use 1The device must be designed to have a main body made of the aforementioned material and a coating layer covering the main body. Examples of coating layer materials include titanium carbides, nitrides, oxides, oxocarbons, nitrogen oxides, carbonitrides, and carboxynitrides. The coating layer may be composed of one or more of the aforementioned materials. It may also consist of one or more layers laminated together. The coating layer material is not limited to the materials mentioned above.

[0081] The coating layer can be applied to a base element using a chemical vapor deposition (CVD) or physical vapor deposition (PVD) process. For example, in cases where the coating layer is formed by the above vapor deposition process in a state where the base element is in contact with an inner circumferential surface of the through-hole. 11 If the coating layer is held in place, it can be arranged so that it covers the entire surface of the base element except for the inner circumferential surface of the through-hole. 11 covered. <schneidwerkzeuge>

[0082] A cutting tool 101 The embodiments are described below with reference to the drawings.

[0083] As in Fig. The cutting tool shown in 15 is... 101 In the embodiments, a rod-shaped body extends from a front end (lower left end in Fig. 15) to a rear end (upper right end in Fig. 15) extends. The cutting tool 101 can a holder 105 with a bag 103 , which is located on one side of the front end, and the above insert 1 exhibiting, which is in the pocket 103 is arranged.

[0084] The bag 103 is a part that secures the insert 1 made possible. The bag 103 Can a seat surface be parallel to a second main surface of the holder? 105 and have a lateral boundary surface that is inclined relative to the seat surface. The bag 103 can be inserted into one side of a front end of the holder 105 to flow into.

[0085] The deployment 1 can be in the bag 103 be arranged. A basic part of the deployment. 1 can be used directly with the bag 103 be in contact. Alternatively, a plate can be used between the insert. 1 and the bag 103 be arranged.

[0086] The deployment 1 can be positioned in such a way that at least part of an area of ​​the cutting part used as the cutting edge is removed from the holder. 105 outwardly stands the predominant position. The deployment 1 In the embodiments, a screw is used. 107 on the holder 105 attached.

[0087] For example, steel or cast iron can be used as material for the holder. 105 can be used. Of these materials, the use of steel particularly contributes to the toughness of the holder. 105 to increase.

[0088] A cutting tool for use in a so-called turning process is in the Fig. The non-restrictive embodiment shown in Figure 15 is illustrated. The cutting tool 101 In its various embodiments, it can be used for a piercing operation, but its use is not limited to this. It is unproblematic even if the cutting tool... 101 It is used for internal diameter machining, external diameter machining, and transverse machining. <Verfahren zur Herstellung eines maschinell bearbeiteten Produkts>

[0089] The following describes a method for manufacturing a machined product in non-restrictive embodiments with reference to the drawings.

[0090] The machined product can be manufactured by the cutting process of the workpiece. 201 is carried out. The method for producing the machined product in the non-limiting embodiments of the present disclosure may comprise the following steps: (1) Rotating the workpiece 201 , (2) Bringing into contact the cutting tool as described above 101 with the workpiece 201 , which is rotated, and (3) Moving the cutting tool 101 from the workpiece 201 away.

[0091] More precisely, the cutting tool is initially considered relatively. 101 close to the workpiece 201 brought while the workpiece 201 rotated around an axis O1, as in Fig. 17 shown. The workpiece 201 The cut is then made by aligning the ridge line (cutting edge) in the cutting tool. 101 with the workpiece 201 is brought into contact, as in Fig. 18 and Fig. Figure 19 shows the cutting tool being positioned relative to the workpiece. 201 moved away, as in Fig. 20 shown.

[0092] In Fig. 17 will be the cutting tool 101 near the workpiece 201 brought about by the cutting tool 101 in a state in which the axis O1 is fixed and the workpiece 201 rotated around the axis O1, moved in the Y1 direction. Fig. 18 and Fig. 19 the workpiece 201 cut by using the cutting edge 1 in contact with the workpiece 201 is brought, which is turned. In Fig. The cutting tool will be 20 101 moved away by the cutting tool 101 in a state in which the workpiece 201 is rotated, is moved in the Y2 direction.

[0093] During the cutting process using the manufacturing method in the embodiments, the cutting tool 101 with the workpiece 201 brought into contact, or the cutting tool is 101 from the workpiece 201 moved away by the cutting tool 101 is moved in the individual steps. However, it is not intended to be limited to this embodiment.

[0094] 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 be continued, the step in which the cutting edge is in use can be skipped. 1 with different sections of the workpiece 201 is brought into contact, repeated while the workpiece 201 is held in rotation.

[0095] Representative examples of the workpiece material 201 They include unalloyed steel, alloyed steel, stainless steel, cast iron and non-ferrous metals. Reference symbol list 1 deployment 3 Basic part 5 Cutting part 7 first main area 9 second main area 11 Through hole 13 upper side surface 15 lower side surface 17 upper surface 19 first side surface 21 second side surface 23 third side surface 25 lower surface 27 first ridge line 29 second ridge line 33 third ridge line 35 first cutting edge 37 second cutting edge 39 third cutting edge 41 first inclined surface 43 pairs of projections 43a upper end 45 first sublime part 45a upper end 45b Final section 47 upper end surface 49 first corner 51 second corner 53 first lead 53a first leading position 53aa upper end 53b first lateral protrusion 53ba upper end 55 second lead 55a second leading position 55aa upper end 55b second lateral projection 55ba upper end 57 second sublime part 57a upper end 57b Final section 101 Cutting tool 103 bags 105 holders 107 screw 201 workpiece 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 2018128979

[0001] < / schneidwerkzeuge>

Claims

[1] A cutting insert comprising: a base part with an upper side surface and a lower side surface and a cutting part that protrudes from the base part towards a first end, wherein the cutting part has an upper surface extending from the upper side surface to the first end, a first side surface that is located on one side of the first end and adjoins the upper surface, a second side surface adjacent to the first side surface and the top surface, a third side surface, adjacent to the first side surface and the top surface, and located on one of the sides opposite the second side surface, a first ridge line, which is located at an intersection of the upper surface and the first side surface, a second ridge line, which is located at an intersection of the upper surface and the second side surface, a third ridge line, which is located at an intersection of the upper surface and the third side surface, a first cutting edge located at the first ridge line, and a second cutting edge located on the second ridge line is arranged the upper surface has a first inclined surface arranged along the first ridge line and inclined downwards away from the first ridge line, a pair of projections arranged side by side in one direction along the first ridge line on the first inclined surface, and a first raised part, arranged along the third ridge line on a side that is further away from the first ridge line than the pair of projections, wherein the second cutting edge is inclined downwards away from the first ridge line, and wherein an upper end of the first raised part is positioned above the second cutting edge. [2] The cutting insert according to claim 1, wherein the first raised part is arranged away from the third ridge line. [3] The cutting insert according to claim 1 or 2, wherein the first raised part has an upper end surface and In the top view, the upper end surface is positioned away from the second ridge line with increasing distance from the first ridge line. [4] The cutting insert according to claim 3, wherein the height of an upper end of the upper end surface is equal to the height of an upper end of the pair of projections. [5] The cutting insert according to claim 3 or 4, wherein the upper end surface is inclined downwards away from the first ridge line, and the upper end surface is arranged in a side view from one side of the second side surface parallel to the second cutting edge. [6] The cutting insert according to any one of claims 1 to 5, wherein the first cutting edge is inclined downwards away from the second ridge line. [7] The cutting insert according to claim 6, wherein an imaginary plane surface located at the midpoint of the upper and lower side surfaces, is a reference plane, and an inclination angle of the first cutting edge relative to the reference plane in a side view from one side of the first side surface is smaller than an inclination angle of the second cutting edge relative to the reference plane in a side view from one side of the second side surface. [8] The cutting insert according to any one of claims 1 to 7, wherein the upper surface further comprises a first corner, which is located at a corner where the first ridge line intersects the second ridge line, and a second corner, which is located at a corner where the first ridge line intersects the third ridge line, and in the top view the pair of projections is shown a first projection located on a corner bisector of the first corner, and a second projection, which is located on a corner bisector of the second corner. [9] The cutting insert according to claim 8, wherein the first projection has in the top view a first forward projection that is located closer to the first ridge line than the corner bisector of the first corner and that extends towards the first ridge line, and a first lateral projection that is located closer to the second ridge line than the corner bisector of the first corner and extends towards the second ridge line. [10] The cutting insert according to claim 9, wherein an upper end of the first front projection is arranged above the upper end of the first lateral projection. [11] The cutting insert according to claim 9 or 10, wherein the second projection has in the top view a second front projection, which is located closer to the first ridge line than the corner bisector of the second corner and which extends towards the first ridge line, and a second lateral projection, which is located closer to the third ridge line than the corner bisector of the second corner and which extends in the direction of the third ridge line, and an upper end of the second lateral projection is located above an upper end of the first lateral projection. [12] The cutting insert according to any one of claims 1 to 11, wherein the upper surface furthermore has a second raised part which, in a plan view, is arranged along the third ridge line between the first raised part and the third ridge line, and The upper end of the second raised part is positioned above the upper end of the first raised part. [13] The cutting insert according to claim 12, wherein an end section on one side of the first end on the second raised part is arranged further away from the first ridge line than an end section on one side of the first end on the first raised part. [14] A cutting tool comprising: a holder with a pocket located on one side of a front end of the holder, and the cutting insert according to any one of claims 1 to 13, wherein the cutting insert is arranged in the pocket. [15] Method for producing a machined product comprising: Turning a workpiece, Bringing the cutting tool according to claim 14 into contact with the workpiece which is rotated, and Moving the cutting tool away from the workpiece.

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