Waveform variable-edge-width profiling blade

Abstract

The utility model discloses a waveform variable edge width profiling blade, which comprises a blade main body, the blade main body comprises a main cutting edge, a front tool face, a rear tool face, a mounting face and an edge belt, and the blade main body is of a cylinder structure; the main cutting edge is formed by overlapping a plurality of sections of edge strips which are uniformly changed, and the main cutting edge is arranged on the outermost side of the edge strips and is in a wave shape; the edge strip is arranged between the front tool face and the rear tool face, the width of the edge strip changes repeatedly, and the number of times of repeated change of the width of the edge strip is the same as the number of times of use of the cutting depth of the blade; and the mounting surface is vertical to the rear cutter surface. By means of the design of the repeatedly-changing edge belts, the blade is made to be firm at the large stress portion, the blade is made to be sharp at the low stress portion, it is guaranteed that cutting force is uniform, and the strength and cutting efficiency of the blade are improved.

Description

Technical Field

[0001] This utility model belongs to the field of profiling tool technology, and in particular, relates to a wave-shaped profiling blade with variable cutting width. Background Technology

[0002] Traditional double-sided profile milling inserts used in the machining industry employ a uniform cutting width design, with all cutting edges positioned on the same horizontal plane. This uniform cutting width design presents several problems. First, while a uniform cutting width means the entire cutting edge participates in the cutting process simultaneously, not all parts achieve optimal cutting performance. In some cases, this design can lead to uneven cutting force distribution, affecting cutting efficiency. If certain parts of the cutting edge degrade in performance due to wear or manufacturing errors, the overall cutting performance of the insert will also be affected. Second, cutting force is a crucial factor in profile machining. A uniform cutting width design can lead to sudden changes in cutting force during the cutting process, especially when encountering workpieces with uneven material or varying hardness. These changes in cutting force can cause vibrations in both the machine tool and the workpiece, thus affecting machining accuracy and workpiece surface quality.

[0003] Existing patent publication number CN202263948U discloses an indexable profile cutting insert. This insert includes an integrally formed positioning section and a cutting section. The positioning section is a regular pentagonal or hexagonal prism; the cutting section is a frustum-shaped cone. In use, the positioning section of the insert is connected to the tool holder, which has a tool holder positioning groove. The shape of the tool holder positioning groove matches the shape of the positioning section, solving the problem of difficulty in fixing the insert. The frustum-shaped cutting section protects the cutting edge, increases the insert's strength, and extends its service life. However, the uniform width of the cutting edge of this profile cutting insert can easily lead to uneven cutting force distribution during machining, thus affecting cutting efficiency. Furthermore, the insert's strength and lifespan are relatively low due to the influence of workpiece material and vibration. Utility Model Content

[0004] This invention addresses the problem that existing contour cutting inserts with uniform cutting width suffer from uneven cutting force distribution, which affects cutting efficiency, cutting performance, and strength. Furthermore, variations in cutting force can cause vibrations in the machine tool and workpiece, thus impacting machining accuracy and workpiece surface quality. This invention proposes a contour cutting insert with a wave-shaped variable cutting width.

[0005] A wave-shaped variable-width profile insert includes an insert body comprising a main cutting edge, a rake face, a flank face, a mounting surface, and a cutting edge band. The insert body has a cylindrical structure. The main cutting edge is composed of multiple overlapping segments of uniformly varying cutting edges, with the main cutting edge positioned on the outermost side of the cutting edges and exhibiting a wave shape. The cutting edge band is located between the rake face and the flank face, and its width repeatedly varies, with the number of times the cutting edge width repeats is the same as the number of times the insert's cutting depth is used. The mounting surface is perpendicular to the flank face.

[0006] Furthermore, a screw positioning hole is provided at the center of the blade body.

[0007] Furthermore, the screw positioning hole is provided with an annular stepped surface.

[0008] Furthermore, the rake face is composed of multiple curved surfaces.

[0009] Furthermore, the mounting surface includes a first mounting surface and a second mounting surface, the first mounting surface and the second mounting surface being parallel and both being perpendicular to the central axis of the blade body.

[0010] Furthermore, both the first mounting surface and the second mounting surface are planar.

[0011] Furthermore, each of the rake face, flank face, main cutting edge, and cutting edge band is provided in pairs, and they are symmetrical in pairs.

[0012] Furthermore, the projection of the main cutting edge onto the flank face is wavy.

[0013] Furthermore, the cutting edge is an annular surface.

[0014] Furthermore, the blade width changes repeatedly more than twice.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] 1. This utility model includes a blade body, which comprises a main cutting edge, a rake face, a flank face, a mounting surface, and a cutting edge band. The blade body has a cylindrical structure. The main cutting edge is composed of multiple overlapping segments of uniformly varying cutting edges, with the main cutting edge positioned on the outermost side of the cutting edge band and exhibiting a wavy shape. The cutting edge band is located between the rake face and the flank face, and its width repeatedly varies, with the number of times the width of the cutting edge repeats is the same as the number of times the blade's cutting depth is used. The mounting surface is perpendicular to the flank face. Through the design of the repeatedly varying cutting edge band, the blade becomes stronger in areas of high stress and sharper in areas of low stress, ensuring uniform cutting force and further improving the strength and cutting efficiency of the profile cutting blade.

[0017] 2. The main body of the contour insert is symmetrical about the central axis, including a pair of symmetrically arranged cutting edges and a main cutting edge. The main cutting edge with the wave pattern is longer and has a stronger ability to distribute cutting force. In contour machining, the superior variable cutting width structure can reduce vibration and improve the machining quality of the insert. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a wave-shaped variable-width profile cutting tool;

[0019] Figure 2 A front view of a wave-shaped variable-width profile cutting tool;

[0020] Figure 3 A bottom view of a contour blade with a wave-shaped variable cutting width.

[0021] In the image above, 1. Blade body; 2. Rake face; 3. Flank face; 4. Main cutting edge; 5. First mounting surface; 6. Second mounting surface; 7. Cutting edge; 8. Screw positioning hole. Detailed Implementation

[0022] To clearly illustrate the technical features of this utility model, the following detailed description, in conjunction with the accompanying drawings, provides a comprehensive understanding of the present utility model. Many specific details are set forth in the following description to facilitate a thorough understanding of the present utility model. However, the present utility model can also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present utility model is not limited to the specific embodiments disclosed below. Furthermore, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are used only for the convenience of describing the present utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined as "first" and "second" can explicitly or implicitly include one or more of those features. In the description of this utility model, "multiple" means two or more, unless otherwise explicitly specified. In this utility model, unless otherwise explicitly specified and limited, terms such as "installed," "connected," "joined," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. In this utility model, unless otherwise explicitly specified and limited, "on" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact through an intermediate medium. In the description of this specification, references to terms such as "an embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0023] Example 1

[0024] like Figure 1 , Figure 2 and Figure 3As shown, a wave-shaped variable-width profile insert includes an insert body, which comprises a main cutting edge, a rake face, a flank face, a mounting surface, and a cutting edge band. The insert body has a cylindrical structure. The main cutting edge is composed of multiple overlapping segments of uniformly varying cutting edges, with the main cutting edge positioned on the outermost side of the cutting edge band and exhibiting a wave shape. The cutting edge band is located between the rake face and the flank face, and its width repeatedly varies, with the number of times the cutting edge width repeats is the same as the number of times the insert's cutting depth is used. The mounting surface is perpendicular to the flank face.

[0025] In this embodiment, as Figure 1 As shown, the main cutting edge is not composed of a single, continuous cutting edge, but rather formed by multiple overlapping segments of repeating and varying cutting edges. The main cutting edge is located on the outermost circumference of the cutting edges and employs a multi-segment repeating and varying cutting edge design. These cutting edges are interconnected through precise overlapping technology, collectively forming the overall shape of the main cutting edge. This design not only enhances the durability and stability of the cutting edge but also significantly improves cutting efficiency and machining accuracy. Figure 2 and Figure 3 As shown, the main cutting edge is a continuous curve, and its projection on the flank face is wavy. The wavy cutting edge has a longer cutting edge length, resulting in a stronger ability to distribute cutting force and higher strength of the insert body. When the profile insert is working, the main cutting edge can distribute the cutting force more evenly during the cutting process, reducing wear and heat accumulation, thereby increasing the tool life.

[0026] like Figure 1 As shown in this embodiment, a screw positioning hole is located at the geometric center of the blade body, extending through the entire blade. The screw positioning hole also features an annular stepped surface to facilitate the fixed installation of the blade body. Fixing the blade to the tool body or other related components by passing a screw through the positioning hole effectively prevents the blade from loosening or shifting during cutting, thus ensuring cutting accuracy and effectiveness.

[0027] like Figure 1 As shown, the upper and lower machining surfaces of the insert body are symmetrical about the central axis. The rake face, flank face, main cutting edge, and cutting edge are each provided with a pair, and they are symmetrical in pairs.

[0028] Example 2

[0029] like Figure 1 , Figure 2 and Figure 3As shown, a wave-shaped variable-width profile insert includes an insert body, which comprises a main cutting edge, a rake face, a flank face, a mounting surface, and a cutting edge band. The insert body has a cylindrical structure. The main cutting edge is composed of multiple overlapping segments of uniformly varying cutting edges, with the main cutting edge positioned on the outermost side of the cutting edge band and exhibiting a wave shape. The cutting edge band is located between the rake face and the flank face, and its width repeatedly varies, with the number of times the cutting edge width repeats is the same as the number of times the insert's cutting depth is used. The mounting surface is perpendicular to the flank face.

[0030] like Figure 1 As shown, in this embodiment, the cutting edge is an annular curved surface and includes 6 small cutting edge sections of the same shape. The small cutting edge sections can overlap with other small cutting edge sections after rotating 60° around the center line of the screw positioning hole. Moreover, the width variation of each small cutting edge section is consistent, that is, the width at both ends of the small cutting edge section is significantly greater than the width of the middle part.

[0031] The cutting thickness of a circular cutting tool gradually increases from thin to thick. The thicker the chip, the greater the cutting force at the cutting edge, requiring higher tool strength. In fact, the wider the cutting edge, the higher the strength. Therefore, theoretically, a design where the cutting edge gradually widens from thin to thick would be more rational. For example... Figure 2 As shown, the wavy cutting edge design features a narrower section that is lower than the wider section. This wavy shape effectively guides chip removal, reducing chip wear and clogging on the tool, thus ensuring a smooth and efficient cutting process.

[0032] The blade band is cast in one piece, making the blade more robust and durable, such as... Figure 1 and Figure 3 As shown, the cutting edge is a continuous circular plane, and the inner side of the cutting edge is a continuous curve. The strength and durability of the blade are ensured by the continuously varying width of the cutting edge.

[0033] The specific width of the cutting edge depends on the sine of the principal cutting edge angle at the cutting position of the tool, the tool feed rate, and the correction coefficient. The width of the cutting edge is positively correlated with the cutting thickness, and the width of the cutting edge calculated from this is from thin to thick.

[0034] Example 3

[0035] like Figure 1 , Figure 2 and Figure 3As shown, a wave-shaped variable-width profile insert includes an insert body, which comprises a main cutting edge, a rake face, a flank face, a mounting surface, and a cutting edge band. The insert body has a cylindrical structure. The main cutting edge is composed of multiple overlapping segments of uniformly varying cutting edges. The main cutting edge is located on the outermost side of the cutting edge band and is wave-shaped, directly participating in the cutting process. Its wave design helps reduce cutting resistance and improve cutting efficiency. The cutting edge band is located between the rake face and the flank face, and its width repeatedly varies. The width of the cutting edge band is not fixed but repeatedly varies according to cutting requirements. The number of times the cutting edge width repeats is the same as the number of times the insert's cutting depth is used, ensuring that the insert maintains stable cutting performance and good durability during the cutting process.

[0036] In this embodiment, the mounting surface includes a first mounting surface and a second mounting surface. The first mounting surface and the second mounting surface are parallel and both are perpendicular to the central axis of the blade body; both the first mounting surface and the second mounting surface are planar. Both the first mounting surface and the second mounting surface are connected to the rake face. The first mounting surface is perpendicular to the flank face, and the second mounting surface is perpendicular to the flank face.

[0037] The design of repeated variations in cutting width can also be used on other profile inserts, including single-sided and double-sided round turning inserts, round milling inserts, willow leaf-shaped milling inserts, profile round-headed groove inserts, solid hardened ball end mills, etc.

[0038] Obviously, the above-described embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A profiled blade for varying the width of a wave, comprising a blade body, characterized in that, The blade body comprises a main cutting edge, a rake face, a relief face, a mounting face and an edge band, and the blade body is in a cylindrical structure; the main cutting edge is composed of a plurality of segments of uniformly changing edge bands which are overlapped, the main cutting edge is arranged at the outermost side of the edge band, and the main cutting edge is in a wave shape; the edge band is arranged between the rake face and the relief face, the width of the edge band changes repeatedly, and the number of times of repeated change of the width of the edge band is the same as the number of times of use of the cutting depth of the blade; the mounting face is perpendicular to the relief face.

2. A profile blade for varying the width of a wave according to claim 1, characterized in that, A screw positioning hole is arranged at the center of the blade body.

3. A profile blade for varying the width of a wave according to claim 2, characterized in that, A circular annular stepped face is arranged in the screw positioning hole.

4. A profile blade of variable width according to claim 1, characterized in that The rake face is composed of a plurality of curved surfaces.

5. A profile blade according to claim 1, wherein The mounting face comprises a first mounting face and a second mounting face, the first mounting face and the second mounting face are parallel, and both are perpendicular to the central axis of the blade body.

6. A profile blade for varying the width of a wave blade as claimed in claim 5, wherein The first mounting face and the second mounting face are both flat surfaces.

7. A profile blade according to claim 1, wherein The rake face, the relief face, the main cutting edge and the edge band are each arranged in a pair, and each pair is symmetrical.

8. A profile blade of variable width according to claim 1, characterized in that The projection of the main cutting edge on the relief face is in a wave shape.

9. A profile blade according to claim 1, wherein The edge band is a circular annular curved surface.

10. A profile blade for varying the width of a wave according to claim 9, wherein The number of times of repeated change of the width of the edge band is greater than twice.

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