A lathe tool for cutting carbon fiber composite materials

Abstract

This utility model belongs to the field of cutting tool technology and discloses a lathe tool for cutting carbon fiber composite materials, including a tool holder, an insert, and a pressure block. The tool holder has a support surface and a mounting surface connected to each other. The support surface has a protrusion with an inclined surface, forming a mounting groove between the inclined surface and the support surface. The insert has a back edge, at least part of which is located within the mounting groove. The pressure block has a fixed part and a pressure arm connected to each other. The fixed part is mounted on the mounting surface, and the pressure arm is bent towards the insert. The side of the pressure arm facing the insert has a pressing surface parallel to the support surface, which extends along the length of the tool holder and abuts against the insert to make the insert and support surface fit together. By setting a pointed insert, point-line cutting is achieved instead of the traditional face cutting of a diamond-shaped cutter head, ensuring a smooth, burr-free cut surface of the carbon fiber.

Description

Technical Field

[0001] This utility model relates to the field of cutting tool technology, and in particular to a lathe tool for cutting carbon fiber composite materials. Background Technology

[0002] Aircraft engine motors are typically installed in ducts, and advanced ducts are usually made of carbon fiber composite materials. The motor support surface inside the carbon fiber composite electric duct is a 0.6mm thick carbon fiber composite wound tube. Due to the need for motor heat dissipation, the 0.6mm thick carbon fiber composite wound tube needs to be segmented to create heat dissipation channels. However, because the traditional cutting heads on current lathes have a certain width, the cutting of carbon fiber material is a peeling cut. Peeling cuts cannot effectively cut the composite material, easily resulting in delamination, edge curling, and other problems, failing to meet processing requirements. Utility Model Content

[0003] The purpose of this invention is to provide a lathe tool for cutting carbon fiber composite materials, which improves processing efficiency and produces a smooth cut without curling edges.

[0004] To achieve this objective, the present invention adopts the following technical solution: a lathe tool for cutting carbon fiber composite materials, comprising a tool holder, a cutting blade, and a pressure block. The tool holder has a support surface and a mounting surface connected to each other. The support surface is vertically arranged and forms an angle with the mounting surface. A protrusion is provided on the side edge of the support surface away from the mounting surface. The protrusion has an inclined surface, and a mounting groove is formed between the inclined surface and the support surface. The mounting groove extends from one side of the tool holder to the other side along the length direction of the tool holder. The cutting blade has a back edge, and the tip of the cutting blade is suspended outside the tool holder. At least a portion of the back edge is located within the mounting groove. The pressure block has a connected fixing part and a pressure arm. The fixing part is mounted on the mounting surface. The pressure arm is bent toward the cutting blade. A pressing surface parallel to the support surface is provided on the side of the pressure arm facing the cutting blade. The pressing surface extends along the length direction of the tool holder and abuts against the cutting blade to make the cutting blade and the support surface fit together.

[0005] Preferably, there are multiple pressure blocks, which are spaced apart along the length of the cutter holder.

[0006] Preferably, each of the pressure blocks is connected with a screw, the fixing part is provided with a through hole, the mounting surface is provided with a screw hole, and the screw passes through the through hole and is fixed in the screw hole.

[0007] Preferably, the tool holder has a positioning surface connected to the side of the mounting surface away from the support surface, the positioning surface has a positioning groove, and the end of the pressure block away from the pressure arm has a positioning part located in the positioning groove.

[0008] Preferably, the fixing part and the pressure arm are connected by a rounded corner.

[0009] Preferably, along the height direction of the tool holder, the end of the sidewall of the pressure arm facing away from the tool holder, near the protrusion, is inclined away from the tool holder.

[0010] Preferably, the angle between the sidewall of the pressure arm away from the tool holder and the horizontal plane is α, satisfying: 5°≤α≤15°.

[0011] Preferably, the blade has a cutting edge on the side opposite to the back of the blade, and the pressing surface is located between the cutting edge and the back of the blade.

[0012] Preferably, the angle between the inclined plane and the supporting surface is β, satisfying: 23°≤β≤26°.

[0013] The beneficial effects of this invention are as follows: By setting a pointed blade, the contact area between the blade tip and the carbon fiber composite material is small when cutting the carbon fiber composite material, achieving point-line cutting instead of the surface cutting of the traditional diamond-shaped blade head, ensuring a smooth and burr-free cut surface of the carbon fiber. By setting an inclined mounting surface for the pressure block, it is ensured that the pressure surface of the pressure block can stably transmit the clamping force to the blade, effectively improving the installation stability of the blade. Attached Figure Description

[0014] Figure 1 This is a front view of a lathe tool for cutting carbon fiber composite materials according to an embodiment of the present invention;

[0015] Figure 2 This is a side view of a lathe tool for cutting carbon fiber composite materials according to an embodiment of the present invention;

[0016] Figure 3 This is a schematic diagram of the tool holder structure according to an embodiment of the present utility model;

[0017] Figure 4 This is a front view of the pressure block according to an embodiment of the present utility model;

[0018] Figure 5 This is a schematic diagram of the blade structure of an embodiment of the present invention.

[0019] In the picture:

[0020] 1. Tool holder; 11. Support surface; 12. Mounting surface; 13. Protrusion; 131. Mounting groove; 14. Positioning surface; 141. Positioning groove; 15. Screw hole;

[0021] 2. Blade; 21. Back of the blade; 22. Edge of the blade;

[0022] 3. Pressure block; 31. Fixing part; 311. Through hole; 32. Pressure arm; 321. Pressing surface; 33. Screw; 34. Positioning part. Detailed Implementation

[0023] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0024] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," 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 or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication 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 based on the specific circumstances.

[0025] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0026] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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 limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0027] Reference Figures 1 to 5As shown, a lathe tool for cutting carbon fiber composite materials according to an embodiment of this application includes: a tool holder 1, a cutting tool 2, and a pressure block 3. The tool holder 1 is an integral casting. The tool holder 1 has a support surface 11 and a mounting surface 12 connected to each other. The support surface 11 is located on one side of the tool holder 1, and the support surface 11 is vertically arranged and at an angle to the mounting surface 12, that is, the mounting surface 12 is inclined. A protrusion 13 is provided on the edge of the support surface 11 away from the mounting surface 12. The protrusion 13 protrudes along the normal of the support surface 11 and has an inclined surface. A mounting groove 131 is formed between the inclined surface and the support surface 11. The mounting groove 131 extends from one side of the tool holder 1 to the other side along the length direction of the tool holder 1. The cutting tool 2 has a back edge 21, and the tip of the cutting tool 2 is suspended outside the tool holder 1. At least part of the back edge 21 is located in the mounting groove 131. The pressure block 3 is provided with a fixed part 31 and a pressure arm 32 connected together. The fixed part 31 is detachably installed on the mounting surface 12. The pressure arm 32 is bent toward the blade 2. The side of the pressure arm 32 facing the blade 2 is provided with a pressing surface 321 parallel to the support surface 11. The pressing surface 321 extends along the length direction of the blade holder 1. The pressing surface 321 abuts against the blade 2 so that the blade 2 and the support surface 11 are in contact.

[0028] Understandably, by setting the blade 2 with a pointed tip, the contact area between the tip and the carbon fiber composite material is small when the blade 2 cuts the carbon fiber composite material, achieving point-line cutting rather than the surface cutting of the traditional diamond-shaped blade head. This ensures that the cut surface of the carbon fiber is flat and burr-free. By setting the inclined mounting surface 12 to install the pressure block 3, it is ensured that the pressing surface 321 of the pressure block 3 can stably transmit the clamping force to the blade 2, preventing the blade 2 from shaking or deflecting when cutting the carbon fiber composite material, and effectively improving the installation stability of the blade 2.

[0029] Furthermore, multiple pressure blocks 3 are provided, spaced apart along the length of the blade holder 1. Simultaneously, the blade 2 adopts a segmented connection method similar to a utility knife, where multiple small blades 2 are joined together. When the tip of the blade 2 becomes worn and dull, the small blades at the end can be broken off through the creases on the blade 2, thus giving the blade 2 a new, sharp tip. In this embodiment, there are four pressure blocks 3; in other embodiments, the number of pressure blocks 3 can be three, five, or six, etc.

[0030] By setting multiple pressure blocks 3, when the user breaks off the worn part of the blade tip and uses the new tip of the blade 2, the user can adjust the number and pressing position of the multiple pressure blocks 3 to ensure that the pressing surface 321 stably presses the shortened blade 2, avoiding deformation of the blade 2, which would cause the blade tip center to be out of the cutting plane and reduce cutting efficiency, thus effectively improving the installation stability of the blade 2 and the working stability of the tool.

[0031] Reference Figure 2As shown, it can be understood that the angle between the inclined plane and the supporting surface 11 is β, which satisfies: 23°≤β≤26°.

[0032] The inclination angle of the bevel is limited to above 23° to avoid problems such as unstable installation of the blade 2 due to insufficient space in the mounting slot 131 for the blade back 21 if the inclination angle is too small. Conversely, the inclination angle is limited to below 26° to avoid instability in the blade 2 if the inclination angle is too large, affecting its working stability. By reasonably limiting the inclination angle of the bevel, the mounting slot 131 can accommodate the blade back 21, further improving the installation stability of the blade 2 and the working stability of the tool.

[0033] Reference Figures 2 to 4 As shown, it can be understood that each pressure block 3 is connected with a screw 33, the fixing part 31 is provided with a through hole 311, the mounting surface 12 is provided with a screw hole 15, and the screw 33 passes through the through hole 311 and is fixed in the screw hole 15.

[0034] By using screws to fix the pressure block 3, the installation of the pressure block 3 and the blade 2 is stable, while simplifying the connection structure between the pressure block 3 and the tool holder 1, thus reducing the cost of using the tool. It should be noted that in this embodiment, the through hole 311 is set as a stepped hole that matches the screw 33. After the screw 33 is screwed into the screw hole 15 and abuts against the stepped surface of the stepped hole, the user can rotate the screw 33 to adjust the clamping force of the pressure block 3 on the blade 2, thereby adapting to different cutting requirements and improving the practicality of the tool.

[0035] Reference Figure 3 and Figure 4 As shown, it can be understood that the tool holder 1 is provided with a horizontal positioning surface 14, which is connected to the side of the mounting surface 12 away from the support surface 11. The positioning surface 14 is provided with a positioning groove 141, which is a V-shaped groove with the opening facing away from the support surface 11 along the height direction of the tool holder 1. The pressure block 3 is provided with a bent positioning part 34 at the end away from the pressure arm 32, and the positioning part 34 is located in the positioning groove 141.

[0036] By setting the positioning part 34 and the positioning groove 141, on the one hand, when the user installs the pressure block 3, the positioning part 34 of the pressure block 3 can be lowered into the positioning groove 141 first, so that the fixing part 31 and the mounting surface 12 fit together, and the pressure block 3 is initially positioned. At this time, the user moves the pressure block 3 along the length direction of the tool holder 1, so that the through hole 311 and the screw hole 15 are aligned, and the screw 33 can be screwed in to fix the pressure block 3, which effectively improves the convenience of tool loading and unloading. On the other hand, a single pressure block 3 is usually fixed by a screw 33. At this time, the positioning part 34 is located in the positioning groove 141, which can limit the pressure block 3 around the screw 33, prevent the pressure block 3 from rotating, and effectively improve the installation stability of the pressure block 3.

[0037] Reference Figure 4As shown, it can be understood that the fixing part 31, the pressure arm 32 and the positioning part 34 of the pressure block 3 are integrally formed parts, and the fixing part 31 and the pressure arm 32 are connected by a rounded corner.

[0038] The connection between the fixing part 31 and the pressure arm 32 adopts a rounded transition, which can optimize the stress structure of the pressure arm 32, ensure that the pressure arm 32 can stably transmit the tightening force of the screw 33 to the blade 2, avoid stress concentration, pressure arm 32 breakage and other problems, and extend the service life of the pressure block 3.

[0039] Furthermore, in the vertical direction, the end of the side wall of the pressure arm 32 away from the tool holder 1 near the protrusion 13 is inclined away from the tool holder 1, that is, the end of the outer side wall of the pressure arm 32 away from the fixing part 31 is inclined outward.

[0040] By using the above settings, the thickness of the pressure arm 32 at the bend can be increased, thereby improving the structural strength of the pressure arm 32, enabling the pressure arm 32 to bear greater clamping force, and effectively improving the structural rationality of the pressure arm 32.

[0041] The angle between the side wall of the pressure arm 32 away from the tool holder 1 and the horizontal plane is α, which satisfies: 5°≤α≤15°.

[0042] The tilt angle of the thickened part of the pressure arm 32 is set above 5° to avoid the thickened part being too small, which would not significantly improve the pressure bearing capacity of the pressure arm 32; the tilt angle of the thickened part of the pressure arm 32 is set below 15° to avoid the problem of excessive thickness at the bending point of the pressure arm 32, which would waste materials.

[0043] Reference Figure 5 As shown, it can be understood that the blade 2 forms a blade edge 22 on the side opposite to the blade back 21. One end of the blade edge 22 is connected to the blade back 21 via a bevel, and the connection point between the blade edge 22 and the bevel is the tip of the blade 2. The blade edge 22 is formed by connecting two blade surfaces arranged at an acute angle, and the pressing surface 321 is located between the blade edge 22 and the blade back 21.

[0044] The pressure surface 321 is positioned between the blade edge 22 and the back of the blade 21 to ensure sufficient contact area between the pressure surface 321 and the blade 2, while preventing the pressure block 3 from damaging or destroying the blade edge 22, thus affecting the replacement and use of the blade 2.

[0045] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A lathe tool for cutting carbon fiber composite materials, characterized in that, include: The tool holder (1) has a support surface (11) and a mounting surface (12) connected to each other. The support surface (11) is vertically arranged and is arranged at an angle to the mounting surface (12). The side edge of the support surface (11) away from the mounting surface (12) has a protrusion (13). The protrusion (13) has an inclined surface. An mounting groove (131) is formed between the inclined surface and the support surface (11). The mounting groove (131) extends from one side of the tool holder (1) to the other side along the length direction of the tool holder (1). The blade (2) has a back (21) and the tip of the blade (2) is suspended outside the blade holder (1), and at least part of the back (21) is located in the mounting groove (131); The pressure block (3) is provided with a fixed part (31) and a pressure arm (32) connected together. The fixed part (31) is installed on the mounting surface (12). The pressure arm (32) is bent toward the blade (2). The side of the pressure arm (32) facing the blade (2) is provided with a pressing surface (321) parallel to the support surface (11). The pressing surface (321) extends along the length direction of the blade holder (1). The pressing surface (321) abuts against the blade (2) so that the blade (2) and the support surface (11) fit together.

2. The lathe tool for cutting carbon fiber composite materials according to claim 1, characterized in that, The pressure block (3) is provided in multiple ways, and the multiple pressure blocks (3) are spaced apart along the length direction of the knife holder (1).

3. The lathe tool for cutting carbon fiber composite materials according to claim 2, characterized in that, Each of the pressure blocks (3) is connected to a screw (33), the fixing part (31) is provided with a through hole (311), the mounting surface (12) is provided with a screw hole (15), and the screw (33) passes through the through hole (311) and is fixed in the screw hole (15).

4. The lathe tool for cutting carbon fiber composite materials according to claim 3, characterized in that, The tool holder (1) is provided with a positioning surface (14), which is connected to the side of the mounting surface (12) away from the support surface (11). The positioning surface (14) is provided with a positioning groove (141). The pressure block (3) is provided with a positioning part (34) at one end away from the pressure arm (32), which is located in the positioning groove (141).

5. The lathe tool for cutting carbon fiber composite materials according to claim 1, characterized in that, The fixing part (31) and the pressure arm (32) are connected by a rounded corner.

6. The lathe tool for cutting carbon fiber composite materials according to claim 5, characterized in that, Along the height direction of the tool holder (1), the end of the pressure arm (32) on the side wall away from the tool holder (1) near the protrusion (13) is inclined away from the tool holder (1).

7. The lathe tool for cutting carbon fiber composite materials according to claim 6, characterized in that, The angle between the side wall of the pressure arm (32) away from the knife holder (1) and the horizontal plane is α, which satisfies: 5°≤α≤15°.

8. The lathe tool for cutting carbon fiber composite materials according to claim 1, characterized in that, The blade (2) forms a blade edge (22) on the side opposite to the back of the blade (21), and the pressing surface (321) is located between the blade edge (22) and the back of the blade (21).

9. The lathe tool for cutting carbon fiber composite materials according to claim 1, characterized in that, The angle between the inclined plane and the supporting surface (11) is β, which satisfies: 23°≤β≤26°.

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