Cutting tool with adjustable cutting angle

Abstract

The invention discloses a cutting tool with an adjustable cutting angle, and relates to the technical field of milling tools, the cutting tool with the adjustable cutting angle comprises a tool body, a blade assembly and an adjusting piece, and the blade assembly is rotatably arranged on the tool body. The adjusting piece is rotationally arranged on the cutter body and is in transmission connection with the blade assembly. Wherein the adjusting piece is driven to rotate to drive the blade assembly to rotate so as to adjust the angle of the cutting edge on the blade assembly. According to the cutting tool with the adjustable cutting angle, the rotating angle of the blade assembly is controlled through the adjusting piece, the angle of the cutting edge can be rapidly, accurately and stably adjusted, the possibility of free deflection of the blade in the adjusting process is greatly reduced, the tool setting time is saved, and the machining efficiency is improved.

Description

Technical Field

[0001] This invention belongs to the field of milling tool technology, specifically a cutting tool with adjustable cutting angle. Background Technology

[0002] In the field of metal cutting, indexable square shoulder end mills exhibit excellent cutting performance and machining efficiency in mold milling, especially in the machining of complex cavities and steep walls.

[0003] In an ideal design, the finishing edge angle of a milling cutter is typically designed to be 0 degrees, meaning the finishing edge is parallel to the radial direction. This design maximizes the finishing effect and effectively improves surface quality. The main cutting edge angle is typically designed to be 90 degrees, meaning the main cutting edge is perpendicular to the radial direction, allowing for the machining of a vertical shoulder surface. In reality, due to insert deformation, design errors, and other factors, the finishing edge angle may not be 0 degrees, and the main cutting edge angle may not be 90 degrees. Therefore, the finishing edge angle and the main cutting edge angle play a decisive role in the machined surface quality and tool life.

[0004] Traditional cutting tools have a fixed blade angle after assembly, making it impossible to adjust the blade angle to meet usage requirements. The usual practice is to replace the tool body or the blade, which increases the cost of tool use. However, related technologies already exist that allow for adjustment of the blade's installation angle after installation. For example, Chinese invention patent CN119237783A discloses a method to dynamically adjust the blade angle by rotating the blade holder.

[0005] However, the manual adjustment process after the insert holder is loosened requires a high level of experience and cannot be quickly and accurately fine-tuned. This makes the tool setting process time-consuming and laborious, affecting machining efficiency. Moreover, the insert holder may shift during the re-tightening process. In addition, the clamping structure of the insert holder is not entirely reasonable, and the overall rigidity of the tool is insufficient. In cutting operations with high cutting forces, the insert holder is prone to displacement or vibration, affecting tool life and machining accuracy. Summary of the Invention

[0006] Therefore, the purpose of this invention is to provide a cutting tool with an adjustable cutting angle, so as to at least solve the problem that the time required for fine adjustment of the cutting edge angle of the insert on existing milling tools is too long and affects the overall machining efficiency.

[0007] To achieve the above objectives, the present invention provides the following technical solution: This invention provides a cutting tool with an adjustable cutting angle, comprising: Blade body; The blade assembly is rotatably mounted on the blade body; The adjusting component is rotatably mounted on the cutter body and is connected to the blade assembly via a transmission mechanism. The drive adjustment component rotates to drive the blade assembly to rotate, thereby adjusting the angle of the cutting edge on the blade assembly.

[0008] As a further embodiment of the present invention, the adjusting member is provided with a driving tooth along the rotation direction, and the blade assembly is provided with a driven tooth along the rotation direction, the driven tooth meshing with the driving tooth.

[0009] As a further embodiment of the present invention, a first slot is provided on the blade assembly, the opening of the first slot is parallel to the rotation axis of the blade assembly, and the driven tooth is located on the inner wall of the first slot.

[0010] As a further embodiment of the present invention, a first connecting hole is provided on the blade body, the opening of the first connecting hole is parallel to the rotation axis of the blade assembly, and the side of the adjusting member opposite to the active tooth is screwed to the first connecting hole.

[0011] As a further embodiment of the present invention, it also includes an elastic element, which is sleeved on the adjusting element, with one end abutting inside the hole of the first connecting hole and the other end abutting on the end face of the driving tooth.

[0012] As a further embodiment of the present invention, it also includes at least one fastener, at least one second connecting hole is correspondingly provided on the blade body, and a second slot hole is correspondingly provided on the blade assembly. The openings of the second connecting hole and the second slot are parallel to the rotation axis of the blade assembly. The fastener passes through the corresponding second slot and is screwed into the second connecting hole.

[0013] As a further embodiment of the present invention, the blade assembly includes an adjusting plate, a blade, and a locking member. A central hole is provided on the blade body, a first through hole is provided on the adjusting plate, and a second through hole is provided on the blade. The locking element passes through the first through hole and the second through hole in sequence and is screwed into the center hole. When the locking element is released, the adjusting plate and the blade rotate around the locking element.

[0014] As a further embodiment of the present invention, a first mounting groove is provided on the blade body. The first mounting groove includes a first bottom plane and an arc-shaped concave surface, and the central hole is located on the first bottom plane. The bottom surface of the adjusting plate abuts against the first bottom plane, and part of the side surface of the adjusting plate abuts against the arc-shaped concave surface.

[0015] As a further embodiment of the present invention, a frustum coaxial with the first through hole is provided on the bottom plane, and the frustum is rotatably engaged with the first through hole.

[0016] As a further embodiment of the present invention, a second mounting groove is provided on the adjustment plate. The second mounting groove includes a second bottom plane and at least one first side plane, and a first through hole is located on the second bottom plane. The bottom surface of the blade abuts against the second bottom plane, and part of the side surface of the blade abuts against the first side surface.

[0017] According to the present invention, a cutting tool with adjustable cutting angle is provided, which has at least the following technical effects. The cutting tool with adjustable cutting angle includes a tool body, a cutting insert assembly and an adjusting member. The cutting insert assembly is rotatably mounted on the tool body, and its rotation axis is perpendicular to the axis of the tool body. The adjusting member is rotatably mounted on the tool body and is connected to the cutting insert assembly in a transmission manner. Driving the adjusting member to rotate causes the cutting insert assembly to rotate, so as to adjust the angle of the cutting edge on the cutting insert assembly, that is, to adjust the angle between the main cutting edge or the finishing edge and the reference.

[0018] Therefore, the cutting tool with adjustable cutting angle provided by the present invention controls the rotation angle of the insert assembly through the adjustment component, which can quickly, accurately and stably adjust the angle of the cutting edge, greatly reducing the possibility of the insert deflecting freely during the adjustment process, saving tool setting time and improving machining efficiency. Attached Figure Description

[0019] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0020] Figure 1 A schematic diagram of the structure of a cutting tool with adjustable cutting angle provided in an embodiment of the present invention; Figure 2 for Figure 1 Partial exploded view; Figure 3 for Figure 2 A magnified view of a section at point A in the middle; Figure 4 for Figure 3 Schematic diagram of the connection relationship between the middle blade assembly and the adjusting component; Figure 5 for Figure 4 A magnified view of a section at point B in the middle.

[0021] Figure label: 100. Tool body; 101. First connecting hole; 102. Second connecting hole; 103. Center hole; 104. First bottom plane; 105. Arc-shaped concave surface; 106. Frustum; 200. Blade assembly; 201. Driven tooth; 202. First slot; 203. Second slot; 204. Second bottom plane; 205. First side surface; 210. Adjusting plate; 211. First through hole; 220. Blade; 221. Second through hole; 222. Main cutting edge; 223. Finishing edge; 230. Locking element; 300. Adjusting component; 301. Driving gear; 400. Elastic components; 500. Fasteners. Detailed Implementation

[0022] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0023] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and 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. Therefore, they should not be construed as limiting this invention.

[0024] In the description of this invention, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0025] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0026] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the invention and are not intended to limit the invention; that is, the described embodiments are merely some embodiments of the invention, and not all embodiments. The components of the embodiments of the invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0028] Please see Figures 1 to 5 As shown, this embodiment of the invention provides a cutting tool with an adjustable cutting angle, including a tool body 100, a cutting insert assembly 200, and an adjustment component 300.

[0029] The blade assembly 200 is rotatably mounted on the blade body 100, and the adjusting component 300 is rotatably mounted on the blade body 100 and is connected to the blade assembly 200 in a transmission manner.

[0030] The drive adjustment component 300 rotates to drive the blade assembly 200 to rotate, thereby adjusting the angle of the cutting edge on the blade assembly 200.

[0031] In this embodiment, the tool body 100 can be a rotating rod-shaped or block-shaped structure. The end face of the tool body 100 is used to face the workpiece, and the side of the tool body 100 facing away from the end face is used to connect to the chuck of the machine tool.

[0032] In this embodiment, the blade assembly 200 is generally in the form of a sheet or block. It can be rotatably connected to the junction of the end face and the side face of the blade body 100 by screws, shafts, pins, etc. The rotation axis of the blade assembly 200 is perpendicular to the axis of the blade body 100.

[0033] The insert assembly 200 has cutting edges. For example, the main cutting edge 222 is located on the side opposite to the axis of the cutter body 100 and protrudes from the outer wall of the cutter body 100 to mill wall surfaces. Similarly, the finishing edge 223 is located on the end face of the cutter body 100 and protrudes from the end face to finish flat surfaces. It should be noted that multiple insert assemblies 200 can be provided around the axis of the cutter body 100.

[0034] In this embodiment, the adjusting member 300 is used to drive the blade assembly 200 to rotate. It can be connected to the blade assembly 200 through a gear meshing structure or through a worm gear meshing structure.

[0035] Specifically, when it is necessary to adjust the cutting angle of the insert assembly 200, the insert assembly 200 can be rotated by driving the adjusting member 300 to rotate, thereby adjusting the angle of the main cutting edge 222 or the finishing edge 223 on the insert assembly 200 relative to the reference plane. For example, Figure 5 As shown, one scenario involves planar machining where high surface accuracy is required, necessitating adjustment of the finishing edge angle α 223. In this case, the main cutting edge angle β 222 is less critical. Another scenario involves cavity machining where high wall surface accuracy is required, necessitating adjustment of the main cutting edge angle β 222. In this case, the finishing edge angle α 223 can be disregarded, and the cutting angle can be adjusted using a tool inspection instrument until it meets the requirements. It should be noted that to prevent the insert assembly 200 from rotating freely, a self-locking structure can be installed in the transmission structure between the adjusting component 300 and the insert assembly 200, or the insert assembly 200 can be locked using other components after adjustment.

[0036] In this way, compared with the existing structure that adjusts the cutting angle by manually rotating the insert holder, the application of the cutting angle adjustable cutting tool provided in this embodiment of the invention controls the rotation angle of the insert assembly 200 by adjusting the adjustment component 300, which can quickly, accurately and stably adjust the angle of the cutting edge, greatly reducing the possibility of the insert deflecting freely during the adjustment process, saving tool setting time and improving machining efficiency.

[0037] In addition, the head end face of the adjusting part 300 can be provided with a screwing groove or screwing protrusion, such as a plum blossom shape, to facilitate the operator to use screwing tools for docking and screwing operations.

[0038] In some embodiments, the adjusting member 300 is provided with an active tooth 301 along the rotation direction, and the blade assembly 200 is provided with a driven tooth 201 along the rotation direction, and the driven tooth 201 meshes with the active tooth 301.

[0039] Specifically, such as Figure 2 , Figure 3 As shown, the adjusting member 300 is roughly in the shape of a rotating body. Around its own axis, the adjusting member 300 has a driving tooth 301, which is coaxial with the adjusting member 300 and resembles a small gear. Around the rotation axis of the blade assembly 200, the blade assembly 200 has a driven tooth 201 that matches the driving tooth 301. The driven tooth 201 can be located on the outer wall of the blade assembly 200 or in a hole or groove inside the blade assembly 200, and resembles a section of an arc tooth on a large gear.

[0040] In this way, through the meshing transmission of the teeth, small-range angle corrections can be made, and the rotation of the blade assembly 200 can be controlled very accurately by the adjusting component 300, thereby achieving precise fine-tuning of the cutting edge. The specific type and specifications of the driven tooth 201 and the driving tooth 301 can be determined according to actual needs, and are not specifically limited in this embodiment.

[0041] Furthermore, in this embodiment, the blade assembly 200 has a first slot 202, the opening of the first slot 202 is parallel to the rotation axis of the blade assembly 200, and the driven tooth 201 is located on the inner wall of the first slot 202.

[0042] Specifically, a first slot 202, roughly waist-shaped, is provided on the blade assembly 200 along a direction parallel to the rotation axis of the blade assembly 200. The driven tooth 201 can be located on the inner wall of the first slot 202, facing away from or close to the rotation axis of the blade assembly 200. This allows for a more compact structure and avoids occupying a large mounting area on the blade body 100.

[0043] Furthermore, in this embodiment, the cutting tool with adjustable cutting angle provided by the present invention has a first connecting hole 101 on the tool body 100. The opening of the first connecting hole 101 is parallel to the rotation axis of the blade assembly 200, and the side of the adjusting member 300 opposite to the active tooth 301 is screwed to the first connecting hole 101.

[0044] Specifically, such as Figure 3 As shown, the first connecting hole 101 can be a first threaded hole. The axis of the first threaded hole is parallel to the rotation axis of the blade assembly 200 and corresponds to the first slot 202, so that the adjusting member 300 can be connected to the first connecting hole 101 after passing through the first slot 202.

[0045] The adjusting member 300 has a first external thread on the side opposite to the driving tooth 301. The first external thread is screwed into a first threaded hole, thus allowing the adjusting member 300 to form a stable rotational connection with the cutter body 100. It should be noted that since the adjusting member 300 will move along the axis under the action of the thread when it rotates, the driving tooth 301 on the adjusting member 300 should be wider than the driven tooth 201 to ensure that the driving tooth 301 is always in contact with the driven tooth 201 throughout the entire arc range of the rotation of the cutter assembly 200.

[0046] Furthermore, in this embodiment, the cutting tool with adjustable cutting angle provided by the present invention also includes an elastic element 400. The elastic element 400 is sleeved on the adjusting element 300, with one end abutting in the hole of the first connecting hole 101 and the other end abutting on the end face of the driving tooth 301.

[0047] Specifically, such as Figure 3 As shown, the elastic element 400 can be a cylindrical compression spring, which is sleeved on the adjusting element 300 between the first external thread and the driving tooth 301, and installed in the non-threaded section within the first connecting hole 101. The outer diameter of the driving tooth 301 is larger than the outer diameter of the adjusting element 300, thus forming a step. The upper end of the elastic element 400 abuts against the step at the end of the driving tooth 301. The upper end of the first connecting hole 101 has a countersunk platform, which is located at the upper end of the first threaded hole. The upper end of the elastic element 400 abuts against the countersunk platform within the first connecting hole 101.

[0048] In this way, the elastic force of the elastic element 400 is used to press the adjusting element 300 along the axial direction and provide sufficient friction to effectively prevent the adjusting element 300 from rotating freely, thereby ensuring the stability and accuracy of the blade assembly 200 after it is adjusted into place. The specific type and elastic force of the elastic element 400 can be determined according to actual needs, and no excessive restrictions are imposed in this embodiment.

[0049] In some embodiments, the cutting tool with adjustable cutting angle provided in this invention further includes at least one fastener 500, at least one second connecting hole 102 is correspondingly provided on the tool body 100, and a second slot 203 is correspondingly provided on the blade assembly 200.

[0050] The openings of the second connecting hole 102 and the second slot 203 are parallel to the rotation axis of the blade assembly 200. The fastener 500 passes through the corresponding second slot 203 and is screwed into the second connecting hole 102.

[0051] Specifically, such as Figure 3 As shown, the second connecting hole 102 on the blade body 100 can be a second threaded hole, the axis of which is parallel to the rotation axis of the blade assembly 200, and one second connecting hole 102 can be arranged on each side of the first connecting hole 101. Correspondingly, a second slot 203 corresponding to the second connecting hole 102 can be opened on the blade assembly 200, and the second slot 203 is approximately waist-shaped.

[0052] The fastener 500 can be a fastening screw, which passes through the second slot 203 and is screwed into the second connecting hole 102. In this way, after the blade assembly 200 is adjusted into position, the fastener 500 is used to tighten it, thereby preventing loosening during processing and ensuring machining accuracy. The specific type, quantity, and installation position of the fastener 500 can be determined according to actual needs, and are not specifically limited in this embodiment.

[0053] It is worth noting that by using fastener 500 to directly fasten the blade assembly 200 and the blade body 100, the blade assembly 200 and the blade body 100 are tightly fitted together, making the tool rigidity more reliable.

[0054] In some embodiments, the blade assembly 200 includes an adjustment plate 210, a blade 220, and a locking member 230. The blade body 100 has a central hole 103, the adjustment plate 210 has a first through hole 211, and the blade 220 has a second through hole 221.

[0055] The locking member 230 passes through the first through hole 211 and the second through hole 221 in sequence and is screwed into the center hole 103. When the locking member 230 is released, the adjusting plate 210 and the blade 220 rotate around the locking member 230.

[0056] Specifically, such as Figure 3 As shown, the blade body 100 has a central hole 103 located at the rotation axis of the blade assembly 200, which is used to connect the blade assembly 200 and provide rotational support. The adjusting plate 210 is used to support the blade 220. The driven tooth 201, the first slot 202, and the second slot 203 are all located on the adjusting plate 210. The adjusting plate 210 also has a first through hole 211 coaxial with the frustum 106.

[0057] The blade 220 has a second through hole 221. The locking member 230 can be a locking screw, which can pass through the first through hole 211 and the second through hole 221 and be screwed into the center hole 103. When the locking member 230 is loosened, the adjusting plate 210 and the blade 220 can rotate around the locking member 230 to adjust their position. After adjustment, they can be locked again by the locking member 230.

[0058] Furthermore, in this embodiment, a first mounting groove is provided on the blade body 100. The first mounting groove includes a first bottom plane 104 and an arc-shaped concave surface 105, and the central hole 103 is located on the first bottom plane 104.

[0059] The bottom surface of the adjusting plate 210 abuts against the first bottom plane 104, and part of the side surface of the adjusting plate 210 abuts against the arc-shaped concave surface 105.

[0060] In this way, such as Figure 1 , Figure 3 As shown, the bottom surface of the adjustment plate 210 is supported by the first bottom plane 104, and part of the side surface of the adjustment plate 210 is supported by the arc concave surface 105. That is, part of the side surface of the adjustment plate 210 is an arc convex surface that matches the arc concave surface 105, forming a semi-enclosed structure, thereby forming a stable support, with good positioning accuracy, and greatly improving the processing stability, thus ensuring processing accuracy.

[0061] In addition, a plurality of first mounting slots are provided on the cutter body 100 near the end face. That is, a plurality of first mounting slots are provided at the junction of the peripheral wall of the cutter body 100 and the adjacent end face. When the insert assembly 200 is placed in the first mounting slot, at least the cutting edge protrudes from the end face and side face of the cutter body 100 so that milling can be realized.

[0062] Furthermore, in this embodiment, a frustum 106 coaxial with the central hole 103 is provided on the bottom plane 104, and the frustum 106 is rotatably engaged with the first through hole 211.

[0063] In this way, the adjusting plate 210 can be positioned by the engagement of the frustum 106 with the first through hole 211, thereby significantly improving the positioning accuracy and stability. Of course, the frustum 106 can also be placed at the bottom of the adjusting plate 210, and the positioning can also be achieved by the rotational engagement of the frustum 106 with a portion of the hole in the central hole 103. This can be determined according to actual needs, and no excessive restrictions are imposed in this embodiment.

[0064] Furthermore, in this embodiment, the adjusting plate 210 is provided with a second mounting groove, the second mounting groove includes a second bottom plane 204 and at least one first side plane 205, and the first through hole 211 is located on the second bottom plane 204.

[0065] The bottom surface of the blade 220 abuts against the second bottom plane 204, and a portion of the side surface of the blade 220 abuts against the first side surface 205.

[0066] Specifically, such as Figure 3 , Figure 4 As shown, a second mounting groove is provided on the side of the adjusting plate 210 opposite to the center hole 103. When the blade 220 is placed in the second mounting groove, the bottom surface of the blade 220 is supported by the second bottom plane 204, and part of the side surface of the blade 220 is supported by the first side surface 205, thus forming a semi-enclosed structure, thereby forming a stable support, good positioning accuracy, and greatly improving the processing stability, thereby ensuring processing accuracy.

[0067] Among them, such as Figure 3 As shown, the cross-section of the second mounting groove is determined according to the shape of the blade 220. The first side 205 can also be provided with a clearance part to avoid interference with the positioning of the blade 220, which can be determined according to actual needs.

[0068] The above description is merely an example and illustration of the structure of the present invention. Those skilled in the art can make various modifications or additions to the specific embodiments described, or use similar methods to replace them, as long as they do not deviate from the structure of the invention or exceed the scope defined in the claims, all of which should fall within the protection scope of the present invention.

Claims

1. A cutting tool with an adjustable cutting angle, characterized in that, include: Blade body (100); A blade assembly (200) is rotatably mounted on the blade body (100); An adjusting member (300) is rotatably mounted on the blade body (100) and is drive-connected to the blade assembly (200); The adjustment member (300) is driven to rotate, thereby causing the blade assembly (200) to rotate, so as to adjust the angle of the cutting edge on the blade assembly (200).

2. The cutting tool with adjustable cutting angle according to claim 1, characterized in that, The adjusting member (300) is provided with an active tooth (301) along the rotation direction, and the blade assembly (200) is provided with a driven tooth (201) along the rotation direction. The driven tooth (201) meshes with the active tooth (301).

3. The cutting tool with adjustable cutting angle according to claim 2, characterized in that, The blade assembly (200) has a first slot (202) with the opening of the first slot (202) being parallel to the rotation axis of the blade assembly (200), and the driven tooth (201) is located on the inner wall of the first slot (202).

4. The cutting tool with adjustable cutting angle according to claim 2, characterized in that, The blade body (100) has a first connecting hole (101) with the opening of the first connecting hole (101) being parallel to the rotation axis of the blade assembly (200). The side of the adjusting member (300) facing away from the active tooth (301) is screwed to the first connecting hole (101).

5. The cutting tool with adjustable cutting angle according to claim 4, characterized in that, It also includes an elastic element (400), which is sleeved on the adjusting element (300), with one end abutting in the hole of the first connecting hole (101) and the other end abutting in the end face of the driving tooth (301).

6. The cutting tool with adjustable cutting angle according to claim 1, characterized in that, It also includes at least one fastener (500), and at least one second connecting hole (102) is correspondingly provided on the blade body (100), and a second slot hole (203) is correspondingly provided on the blade assembly (200). The openings of the second connecting hole (102) and the second slot (203) are parallel to the rotation axis of the blade assembly (200), and the fastener (500) passes through the corresponding second slot (203) and is screwed into the second connecting hole (102).

7. The cutting tool with adjustable cutting angle according to any one of claims 2 to 6, characterized in that, The blade assembly (200) includes an adjusting plate (210), a blade (220) and a locking member (230). The blade body (100) has a central hole (103), the adjusting plate (210) has a first through hole (211), and the blade (220) has a second through hole (221). The locking member (230) passes through the first through hole (211) and the second through hole (221) in sequence and is screwed to the center hole (103). When the locking member (230) is released, the adjusting plate (210) and the blade (220) rotate around the locking member (230).

8. The cutting tool with adjustable cutting angle according to claim 7, characterized in that, The blade body (100) is provided with a first mounting groove, the first mounting groove includes a first bottom plane (104) and an arc-shaped concave surface (105), and the central hole (103) is located on the first bottom plane (104); The bottom surface of the adjusting plate (210) abuts against the first bottom plane (104), and a portion of the side surface of the adjusting plate (210) abuts against the arc-shaped concave surface (105).

9. The cutting tool with adjustable cutting angle according to claim 8, characterized in that, The bottom plane (104) is provided with a frustum (106) coaxial with the first through hole (211), and the frustum (106) is rotatably engaged with the first through hole (211).

10. The cutting tool with adjustable cutting angle according to claim 7, characterized in that, The adjusting plate (210) is provided with a second mounting groove, the second mounting groove includes a second bottom plane (204) and at least one first side plane (205), and the first through hole (211) is located on the second bottom plane (204); The bottom surface of the blade (220) abuts against the second bottom plane (204), and a portion of the side surface of the blade (220) abuts against the first side surface (205).

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