Tool and machining apparatus

Abstract

This utility model discloses a cutting tool and processing equipment, belonging to the field of machining technology. It includes a tool holder and a processing part connected to the tool holder. The processing part includes a protrusion with a concave surface, a first support surface located on one side of the protrusion and connected to it, a first positioning surface connected to both the first support surface and the tool holder, a second support surface located on the other side of the protrusion and connected to it, and a second positioning surface connected to both the first support surface and the tool holder. The first positioning surface is inclined in a direction away from the protrusion, and the second positioning surface is also inclined in a direction away from the protrusion. The distance between the first support surface and the concave surface is smaller than the distance between the second support surface and the concave surface. This utility model achieves the technical effect of improving processing quality while increasing processing efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of machining technology, and specifically relates to a cutting tool and machining equipment. Background Technology

[0002] In CNC machining of composite curved surfaces, ball end mills are typically used to mill along a circular arc point milling program path. The ball end mill needs to gradually mill the shape according to the 3D curved surface features of the product. The machining path of the ball end mill is dense, and the cutting speed needs to be strictly controlled. If the ball end mill movement speed is increased to improve production efficiency, it will result in obvious tool marks and increased surface roughness, and the appearance quality will not meet the requirements of high-end products. If the machining speed is reduced to ensure appearance quality, the tool path density will increase, the machining cycle will be significantly extended, the efficiency will be low, and the cost will be high.

[0003] Therefore, it is necessary to provide a new technical solution to solve the above-mentioned technical problems. Utility Model Content

[0004] The technical problem to be solved by this utility model is the inability to improve processing efficiency while improving processing quality.

[0005] To solve the above-mentioned technical problems, this utility model provides a cutting tool, which includes a handle portion and a machining portion connected to the handle portion. The machining portion includes a protrusion with a concave surface, a first support surface located on one side of the protrusion and connected to the protrusion, a first positioning surface connected to the first support surface and the handle portion, a second support surface located on the other side of the protrusion and connected to the protrusion, and a second positioning surface connected to the first support surface and the handle portion. The first positioning surface is inclined in a direction away from the protrusion, and the second positioning surface is inclined in a direction away from the protrusion. The distance between the first support surface and the concave surface is smaller than the distance between the second support surface and the concave surface.

[0006] Optionally, the protrusion includes a first side surface and a second side surface that are respectively connected to the recessed surface, the recessed surface being located between the first side surface and the second side surface, the first side surface being connected to the first support surface, and the second side surface being connected to the second support surface.

[0007] Optionally, the projection of the first positioning surface onto the second side surface along a direction close to the second side surface is located between the recessed surface and the second support surface, and the width of the first positioning surface is smaller than the width of the second positioning surface.

[0008] Optionally, the first side is perpendicular to the first support surface, the first side is perpendicular to the second support surface, and the first support surface and the second support surface are parallel.

[0009] Optionally, the concave surface includes an arc-shaped segment and two inclined surfaces connected to the arc-shaped segment and located on both sides of the arc-shaped segment. The arc-shaped segment is inclined toward the first support surface, the handle portion is cylindrical, and the two inclined surfaces are symmetrical about the central axis of the handle portion.

[0010] Optionally, the distance between the lowest and highest points of the arc segment ranges from 1.125 mm to 1.155 mm, the width of the arc segment relative to the two sides of the protrusion ranges from 1.795 mm to 1.805 mm, the inclination angle of the arc segment towards the first support surface ranges from 0.5° to 1.5°, and the inclination angle of the inclined surface ranges from 16° to 18°.

[0011] Optionally, the width of the first support surface is in the range of 0.6 mm to 0.8 mm, the width of the second support surface is in the range of 0.9 mm to 1.1 mm, the inclination angle of the first positioning surface in the direction away from the protrusion is in the range of 28° to 32°, and the inclination angle of the second positioning surface in the direction away from the protrusion is in the range of 43° to 47°.

[0012] Optionally, the distance between the first support surface and the recessed surface ranges from 1.4 mm to 1.6 mm, and the distance between the second support surface and the recessed surface ranges from 4.9 mm to 5.1 mm.

[0013] According to another aspect of the present invention, the present invention also provides a processing device, the processing device including the aforementioned cutting tool.

[0014] Optionally, the processing equipment further includes a spindle and a control module. The spindle is configured to drive the tool to rotate at zero speed during the processing, and the control module is used to control the tool to move along the X-axis and Y-axis in a fixed-axis manner.

[0015] Beneficial effects:

[0016] This utility model provides a cutting tool connected to a tool holder via a machining section. The machining section has a protruding portion with a concave surface. A first supporting surface is located on one side of the protruding portion and connected to it. A first positioning surface is connected to both the first supporting surface and the tool holder, and is inclined away from the protruding portion. A second supporting surface is located on the other side of the protruding portion and connected to it. The second positioning surface is also connected to both the first supporting surface and the tool holder, and is inclined away from the protruding portion. The distance between the first supporting surface and the concave surface is smaller than the distance between the second supporting surface and the concave surface. This allows the cutting force to be guided along a predetermined direction by the inclination of the first and second positioning surfaces, reducing vibration deviation during machining. Simultaneously, the smaller distance between the first and second supporting surfaces creates an asymmetrical support structure, enabling the tool to adapt to the geometric features of complex curved surfaces during machining. This allows for efficient cutting through a single path, avoiding surface texture problems caused by multiple path overlaps and significantly shortening machining time. This achieves the technical effect of improving processing quality while increasing processing efficiency. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of a cutting tool provided in an embodiment of the present utility model.

[0019] Figure 2 This is a schematic diagram of the structure of a concave surface in a cutting tool provided in an embodiment of the present utility model.

[0020] Figure 3 This is a schematic diagram of the structure of the second positioning surface in a cutting tool provided in an embodiment of the present utility model.

[0021] Figure 4 This is a schematic diagram of the structure of the first positioning surface in a cutting tool provided in an embodiment of the present utility model.

[0022] Figure 5 This is a schematic diagram of the structure of a protrusion in a cutting tool provided in an embodiment of the present utility model.

[0023] The meanings of the labels in the attached diagram are as follows:

[0024] 1—Handle portion, 2—Machining portion, 21—Protrusion, 211—Concave surface, 2111—Arc segment, 2112—Inclined surface, 212—First side surface, 213—Second side surface, 22—First support surface, 23—First positioning surface, 24—Second support surface, 25—Second positioning surface, 3—First spacing, 31—First width, 32—First tilt angle, 33—Second tilt angle, 34—Second width, 35—Third width, 36—Third tilt angle, 37—Fourth tilt angle, 38—Second spacing, 39—Third spacing, 4—Product to be processed. Detailed Implementation

[0025] The embodiments of this application are described in detail below. Examples of the 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 this application, and should not be construed as limiting this application.

[0026] To enable those skilled in the art to better understand the solutions of this application, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0027] In the embodiments of this application, "at least one" refers to one or more; "multiple" refers to two or more. In the description of this application, the terms "first," "second," "third," etc., are used only for the purpose of distinguishing descriptions and should not be construed as indicating or implying relative importance, nor should they be construed as indicating or implying order.

[0028] In this specification, references such as "one embodiment" or "some embodiments" mean that one or more embodiments of this application include the specific features, structures, or characteristics described in connection with that embodiment. Therefore, the terms "comprising," "including," "having," and variations thereof in this specification all mean "including but not limited to," unless otherwise specifically emphasized. It should be noted that in the embodiments of this application, "and / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone.

[0029] It should be noted that, in the embodiments of this utility model, when a component is referred to as being "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. When a component is considered to be "set on" another component, it can be directly set on the other component or there may be an intervening component. Furthermore, in the embodiments of this application, "connection" can also be understood as an electrical connection; the connection between two electrical components can be a direct or indirect connection between the two electrical components. For example, the connection between A and B can be a direct connection between A and B, or an indirect connection between A and B through one or more other electrical components. The terms "vertical," "horizontal," "left," "right," and similar expressions used in the embodiments of this utility model are for illustrative purposes only and are not intended to limit the utility model.

[0030] The first embodiment of this utility model provides a cutting tool, please refer to... Figures 1 to 5 As shown, Figure 1 This is a schematic diagram of the structure of a cutting tool provided in an embodiment of this utility model. Figure 2 This is a schematic diagram of the structure of the recessed surface 211 in a cutting tool provided in an embodiment of this utility model. Figure 3 This is a schematic diagram of the structure of the second positioning surface 25 in a cutting tool provided by an embodiment of this utility model. Figure 4 This is a schematic diagram of the structure of the first positioning surface 23 in a cutting tool provided in an embodiment of this utility model. Figure 5 This is a schematic diagram of the structure of a protrusion 21 in a cutting tool provided in an embodiment of the present invention. The cutting tool provided in this embodiment includes a handle portion 1 and a machining portion 2. The machining portion 2 includes a protrusion 21, a first support surface 22, a first positioning surface 23, a second support surface 24, and a second positioning surface 25. The protrusion 21 has a recessed surface 211. The first support surface 22 is located on one side of the protrusion 21 and is connected to the protrusion 21. The first positioning surface 23 is connected to both the first support surface 22 and the handle portion 1, and is inclined in a direction away from the protrusion 21. The second support surface 24 is located on the other side of the protrusion 21 and is connected to the protrusion 21. The second positioning surface 25 is connected to both the first support surface 22 and the handle portion 1, and is inclined in a direction away from the protrusion 21. The distance between the first support surface 22 and the recessed surface 211 is smaller than the distance between the second support surface 24 and the recessed surface 211.

[0031] The machining section 2 includes a protrusion 21 with a recessed surface 211. A first support surface 22 is formed on one side of the protrusion 21, and the first support surface 22 is transitionally connected to the tool holder section 1 via a first positioning surface 23. A second support surface 24 is provided on the other side of the protrusion 21, and the second support surface 24 is transitionally connected to the tool holder section 1 via a second positioning surface 25.

[0032] The first support surface 22 and the recessed surface 211 can form the main support area, and the second support surface 24 and the recessed surface 211 can form the auxiliary support area, so that when the tool is machining the composite curved surface, the main support area can contact the workpiece first, and the auxiliary support area can dynamically adapt according to the curvature of the surface.

[0033] In this embodiment, the machining part 2 is connected to the tool holder part 1. The protrusion 21 in the machining part 2 has a concave surface 211. The first support surface 22 is located on one side of the protrusion 21 and is connected to the protrusion 21. The first positioning surface 23 is connected to the first support surface 22 and the tool holder part 1 respectively. The first positioning surface 23 is inclined in the direction away from the protrusion 21. The second support surface 24 is located on the other side of the protrusion 21 and is connected to the protrusion 21. The second positioning surface 25 is connected to the first support surface 22 and the tool holder part 1 respectively. The second positioning surface 25 is inclined in the direction away from the protrusion 21. The distance between the first support surface 22 and the concave surface 211 is smaller than the distance between the second support surface 24 and the concave surface 211. In this way, the cutting tool can guide the cutting force along a predetermined direction through the inclination of the first positioning surface 23 and the second positioning surface 25, reducing vibration deviation during machining. Simultaneously, the smaller distance between the first support surface 22 and the recessed surface 211, and the larger distance between the second support surface 24 and the recessed surface 211, form an asymmetrical support structure. This allows the cutting tool to adapt to the geometric features of the complex curved surface during machining, completing efficient cutting through a single path and avoiding surface texture problems caused by multiple path overlaps. This also significantly shortens machining time. Thus, the technical effect of improving machining quality while simultaneously increasing machining efficiency is achieved.

[0034] In one embodiment, the protrusion 21 includes a first side surface 212 and a second side surface 213. The first side surface 212 and the second side surface 213 are respectively connected to a recessed surface 211, which is located between the first side surface 212 and the second side surface 213. The first side surface 212 is connected to a first support surface 22, and the second side surface 213 is connected to a second support surface 24. The rigid connection between the first side surface 212 and the first support surface 22 can form the main load-bearing area. During the cutting process, the asymmetric force distribution between the first side surface 212 and the first support surface 22, and between the second side surface 213 and the second support surface 24, generates a controllable deflection torque, so that the deviation between the actual cutting path and the theoretical path can be controlled within a small range.

[0035] In some embodiments, the projection of the first positioning surface 23 onto the second side surface 213 along a direction close to the second side surface 213 lies between the recessed surface 211 and the second support surface 24, and the width of the first positioning surface 23 is smaller than the width of the second positioning surface 25. The narrow projection width of the first positioning surface 23 can enhance radial stiffness, while the wide projection of the second positioning surface 25 can improve axial stability. The differential positioning forms a composite constraint, allowing vibration energy to be dissipated in stages during transmission.

[0036] In some embodiments, the first side surface 212 is perpendicular to the first support surface 22, the first side surface 212 is perpendicular to the second support surface 24, and the first support surface 22 and the second support surface 24 are parallel to each other. This can eliminate shear stress concentration, and the parallel first support surface 22 and the second support surface 24 make the load evenly distributed, which is beneficial to improving the stability of the structure and improving the reliability of processing.

[0037] In some embodiments, the recessed surface 211 includes an arc-shaped segment 2111 and two inclined surfaces 2112. The two inclined surfaces 2112 are respectively connected to the arc-shaped segment 2111 and are located on both sides of the arc-shaped segment 2111. The arc-shaped segment 2111 is inclined towards the first support surface 22, and the handle portion 1 is cylindrical. The two inclined surfaces 2112 are symmetrical about the central axis of the handle portion 1. The arc-shaped segment 2111 can optimize the chip curling space, and the inclined surfaces 2112 can guide the chips to be discharged in a predetermined direction, thereby improving chip removal efficiency.

[0038] In some embodiments, the distance between the lowest and highest points of the arc segment 2111 ranges from 1.125 mm to 1.155 mm. This distance can refer to a first distance 3, meaning the first distance 3 ranges from 1.125 mm to 1.155 mm. The width of the arc segment 2111 relative to both sides of the protrusion 21 ranges from 1.795 mm to 1.805 mm. This width can refer to a first width 31, meaning the first width 31 ranges from 1.795 mm to 1.805 mm. The inclination angle of the arc segment 2111 towards the first support surface 22 ranges from 0.5° to 1.5°. This inclination angle can refer to a first inclination angle 32, meaning the first inclination angle 32 ranges from 0.5° to 1.5°. The tilt angle of the inclined surface 2112 ranges from 16° to 18°. The tilt angle of the inclined surface 2112 can refer to a second tilt angle 33, meaning the second tilt angle 33 also ranges from 16° to 18°. The aforementioned arc segment 2111 and inclined surface 2112 effectively suppress the generation of hot cracks and extend tool life.

[0039] In some embodiments, the width of the first support surface 22 ranges from 0.6 mm to 0.8 mm, and the width of the first support surface 22 can refer to a second width 34, that is, the value of the second width 34 ranges from 0.6 mm to 0.8 mm. The width of the second support surface 24 ranges from 0.9 mm to 1.1 mm, and the width of the second support surface 24 can refer to a third width 35, that is, the value of the third width 35 ranges from 0.9 mm to 1.1 mm. The tilt angle of the first positioning surface 23 in the direction away from the protrusion 21 ranges from 28° to 32°, and the tilt angle of the first positioning surface 23 in the direction away from the protrusion 21 can refer to a third tilt angle 36, that is, the value of the third tilt angle 36 ranges from 28° to 32°. The tilt angle of the second positioning surface 25 in the direction away from the protrusion 21 ranges from 43° to 47°. This tilt angle can refer to a fourth tilt angle 37, meaning the value of the fourth tilt angle 37 ranges from 43° to 47°. The optimized width difference between the first support surface 22 and the second support surface 24, along with the combination of the tilt angles of the first positioning surface 23 and the second positioning surface 25, can change the direction of the cutting force vector. This allows the vibration energy to attenuate along the transmission path, which is beneficial for reducing the surface roughness of the product 4 to be processed.

[0040] In some embodiments, the distance between the first support surface 22 and the recessed surface 211 ranges from 1.4 mm to 1.6 mm. This distance can refer to a second distance 38, meaning the second distance 38 also ranges from 1.4 mm to 1.6 mm. The distance between the second support surface 24 and the recessed surface 211 ranges from 4.9 mm to 5.1 mm. This distance can also refer to a third distance 39, meaning the third distance 39 also ranges from 4.9 mm to 5.1 mm. By using the distances between the first support surface 22 and the recessed surface 211, and the distances between the second support surface 24 and the recessed surface 211, a gradient is formed on both sides of the recessed surface 211. This allows for high stiffness on one side to ensure positioning accuracy, and low stiffness on the other side to enhance surface adaptability.

[0041] To provide a detailed description of the processing equipment provided by this utility model, the above embodiment 1 describes a cutting tool in detail. Based on the same utility model concept, this application also provides a processing equipment, as detailed in embodiment 2.

[0042] This utility model provides a processing device in embodiment two, including the aforementioned cutting tool. The processing device provided in embodiment two may further include a spindle and a control module. The spindle is configured to drive the cutting tool at a zero rotational speed during processing. The control module is used to control the cutting tool to move along the X-axis and Y-axis directions in a fixed-axis manner. The X-axis direction can refer to... Figure 5 The left and right directions in the middle, the Y-axis direction can refer to, for example Figure 5 The forward and backward directions within the process. Zero-speed configuration eliminates centrifugal force interference, and fixed-axis movement control enables deterministic machining trajectories, which improves the quality and efficiency of machining the product 4.

[0043] This utility model provides a processing device, which is connected to a tool holder 1 via a processing part 2. The processing part 2 has a protrusion 21 with a concave surface 211. A first support surface 22 is located on one side of the protrusion 21 and is connected to the protrusion 21. A first positioning surface 23 is connected to the first support surface 22 and the tool holder 1 respectively, and the first positioning surface 23 is inclined in a direction away from the protrusion 21. A second support surface 24 is located on the other side of the protrusion 21 and is connected to the protrusion 21. A second positioning surface 25 is connected to the first support surface 22 and the tool holder 1 respectively, and the second positioning surface 25 is inclined in a direction away from the protrusion 21. The distance between the first support surface 22 and the concave surface 211 is smaller than the distance between the second support surface 24 and the concave surface 211. In this way, the cutting tool can guide the cutting force along a predetermined direction through the inclination of the first positioning surface 23 and the second positioning surface 25, reducing vibration deviation during machining. Simultaneously, the smaller distance between the first support surface 22 and the recessed surface 211, and the larger distance between the second support surface 24 and the recessed surface 211, form an asymmetrical support structure. This allows the cutting tool to adapt to the geometric features of the complex curved surface during machining, completing efficient cutting through a single path and avoiding surface texture problems caused by multiple path overlaps. This also significantly shortens machining time. Thus, the technical effect of improving machining quality while simultaneously increasing machining efficiency is achieved.

[0044] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0045] The above embodiments only illustrate preferred implementations of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A cutting tool, characterized in that, The cutting tool includes a handle portion and a machining portion connected to the handle portion. The machining portion includes a protrusion with a concave surface, a first support surface located on one side of the protrusion and connected to the protrusion, a first positioning surface connected to the first support surface and the handle portion, a second support surface located on the other side of the protrusion and connected to the protrusion, and a second positioning surface connected to the first support surface and the handle portion. The first positioning surface is inclined in a direction away from the protrusion, and the second positioning surface is inclined in a direction away from the protrusion. The distance between the first support surface and the concave surface is smaller than the distance between the second support surface and the concave surface.

2. The cutting tool according to claim 1, characterized in that, The protrusion includes a first side surface and a second side surface that are respectively connected to the recessed surface. The recessed surface is located between the first side surface and the second side surface. The first side surface is connected to the first support surface, and the second side surface is connected to the second support surface.

3. The cutting tool according to claim 2, characterized in that, The projection of the first positioning surface onto the second side surface along the direction close to the second side surface is located between the recessed surface and the second support surface, and the width of the first positioning surface is smaller than the width of the second positioning surface.

4. The cutting tool according to claim 2, characterized in that, The first side is perpendicular to the first support surface, the first side is perpendicular to the second support surface, and the first support surface and the second support surface are parallel.

5. The cutting tool according to claim 1, characterized in that, The concave surface includes an arc-shaped segment and two inclined surfaces connected to the arc-shaped segment and located on both sides of the arc-shaped segment. The arc-shaped segment is inclined towards the first support surface. The handle portion is cylindrical. The two inclined surfaces are symmetrical about the central axis of the handle portion.

6. The cutting tool according to claim 5, characterized in that, The distance between the lowest and highest points of the arc segment ranges from 1.125 mm to 1.155 mm, the width of the arc segment relative to the two sides of the protrusion ranges from 1.795 mm to 1.805 mm, the inclination angle of the arc segment towards the first support surface ranges from 0.5° to 1.5°, and the inclination angle of the inclined surface ranges from 16° to 18°.

7. The cutting tool according to claim 1, characterized in that, The width of the first support surface ranges from 0.6 mm to 0.8 mm, the width of the second support surface ranges from 0.9 mm to 1.1 mm, the tilt angle of the first positioning surface in the direction away from the protrusion ranges from 28° to 32°, and the tilt angle of the second positioning surface in the direction away from the protrusion ranges from 43° to 47°.

8. The cutting tool according to claim 1, characterized in that, The distance between the first support surface and the recessed surface ranges from 1.4 mm to 1.6 mm, and the distance between the second support surface and the recessed surface ranges from 4.9 mm to 5.1 mm.

9. A processing device, characterized in that, The processing equipment includes the cutting tool as described in any one of claims 1 to 8.

10. The processing equipment according to claim 9, characterized in that, The machining equipment also includes a spindle and a control module. The spindle is configured to drive the tool to rotate at zero speed during the machining process. The control module is used to control the tool to move along the X-axis and Y-axis in a fixed-axis manner.

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