Twist bit for carbon fiber material

Abstract

The utility model discloses an auger bit for carbon fiber materials, which comprises a handle portion, one end of the handle portion is fixedly connected with a drill rod, one end of the drill rod is a cutting end, a cutting edge is arranged on the cutting end, a spiral chip groove is arranged on the surface of the drill rod, and the chip groove extends to a cutting edge of the cutting edge. A groove is annularly formed in the cutting end, and the cross section of the groove is narrow in the left and wide in the right. Through the arrangement of the groove, when the cutting end on the drill rod drills through the carbon fiber plate and is pulled back, residual fibers are clamped into the groove and then are pulled upwards and rotated along with the drill rod to cut off the fibers, that is, when the cutting end is pulled out of a drill hole, the process of removing fiber burrs is completed, the operation process does not need to be independently added, the drilling quality is improved, and the drilling efficiency is improved. And manpower and material resources are effectively saved.

Description

Technical Field

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

[0002] A twist drill is a rotary cutting tool named for its twisted shape. Its cutting part is typically double-helixed. This design allows for continuous cutting and chip removal during rotation, making it suitable for drilling various materials such as metals, plastics, and wood. In recent years, with the rise of carbon fiber materials, twist drills have also been widely used in their processing.

[0003] However, when traditional twist drills are used to drill through carbon fiber sheets, the carbon fiber layer at the bottom of the sheet tends to leave some fiber filaments on the bottom surface of the hole when the hole is about to be drilled through. In order to ensure the quality of the hole, it is necessary to add a deburring process to remove the fiber filaments from the bottom of the hole, which not only affects the drilling quality but is also time-consuming and labor-intensive. Utility Model Content

[0004] The purpose of this invention is to solve the problem of fiber residue left when traditional twist drills drill holes in carbon fiber plates, and to provide a twist drill for carbon fiber materials.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] This utility model provides a twist drill bit for carbon fiber materials, including a shank, one end of which is fixedly connected to a drill rod, one end of which is a cutting end, the cutting end is provided with a cutting edge, and the surface of the drill rod is provided with a spiral chip removal groove, the chip removal groove extending to the cutting edge of the cutting edge;

[0007] The cutting end has a groove circumferentially formed, and the cross-section of the groove is narrower on the left and wider on the right.

[0008] Furthermore, the drill rod and shank are integrally formed, and the drill rod and shank are made of cemented carbide, while the cutting edge is made of diamond.

[0009] Furthermore, an installation groove is provided on the cutting end of the drill rod, and the cutting edge is fixed in the installation groove by welding.

[0010] Furthermore, the chip removal groove and the drill rod surface form a helical ridge, and the groove is formed through the helical ridge and the cutting edge.

[0011] Furthermore, three chip removal grooves are provided, and the three chip removal grooves are evenly distributed on the drill rod; the cutting edge of the cutting edge is provided in a one-to-one correspondence with the chip removal groove.

[0012] The beneficial effects of the utility model are:

[0013] 1. By setting a groove, when the cutting end on the drill rod drills through the carbon fiber plate and pulls back, the remaining fiber filaments can be stuck into the groove. Then, as the drill rod is pulled up and rotated, the fiber filaments are cut off. That is, the fiber deburring process is completed when the cutting end is pulled out of the hole. There is no need to add a separate operation process, which not only improves the drilling quality, but also effectively saves manpower and material resources.

[0014] 2. By setting the width of the left and right ends of the groove to different sizes, the wider end can collect the fiber filaments, making it easier for the groove to hold more fiber filaments, while the narrower end can bundle the held fiber filaments as it rotates, making it easier to cut them later, which greatly improves work efficiency. Attached Figure Description

[0015] Figure 1 This utility model provides a structural schematic diagram of a twist drill bit for carbon fiber materials;

[0016] Figure 2 An exploded view of a twist drill bit for carbon fiber materials provided by this utility model;

[0017] Figure 3 for Figure 1 Front view of

[0018] Figure 4 This is a schematic diagram of another embodiment of the present invention.

[0019] In the figure, 1 is the shank; 2 is the drill rod; 21 is the cutting end; 211 is the mounting groove; 3 is the chip removal groove; 31 is the spiral ridge; 4 is the cutting edge; and 5 is the groove. Detailed Implementation

[0020] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that, unless otherwise specified, the following embodiments and features described therein can be combined with each other.

[0021] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the drawings only show the components related to the present invention and are not drawn according to the number, shape and size of the components in actual implementation. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0022] Example 1

[0023] like Figures 1 to 3 As shown

[0024] A twist drill bit for carbon fiber materials includes a circular shank 1, one end of which is connected to an external cutting device. The other end of the shank 1 is integrally formed with a drill rod 2. Preferably, to better withstand the stress during rotation, the shank 1 and the drill rod 1 are machined from a single carbide rod. The front end of the drill rod 2 is a cutting end 21. Further, to increase the cutting hardness of the cutting end 21, a triangular mounting groove 211 is formed on the bottom of the cutting end 21, with the triangular edges evenly arranged. A cutting tool matching the shape is embedded and welded into the mounting groove 211. Preferably, the cutting edge 4 is made of diamond. The three cutting edges of the cutting edge 4 are evenly arranged. The cutting edges of the three cutting edges 4 are all flush with the bottom of the cutting end 21 of the drill rod 2. In order to prevent chip accumulation and blockage, a chip removal groove 3 is provided at each cutting edge, spiraling upward along the cutting edge of the cutting edge 4 for chip removal. The three chip removal grooves 3 and the drill rod 2 form three spiral ridges 31. Furthermore, in order to allow residual fiber filaments to be trapped when the drill rod 2 is withdrawn, a groove 5 with an annular structure is provided on each spiral ridge 31 located at the cutting end 21. The groove 5 extends to the back of the cutting edge 4.

[0025] This design, through the action of the groove 5, allows residual fibers to be trapped in the groove 5 when the cutting end 211 on the drill rod 2 drills through the carbon fiber plate and is pulled back. Then, as the drill rod 2 is pulled up and rotated, the fibers are cut, thus completing the deburring process simultaneously when the cutting end 21 is removed from the hole. This eliminates the need for a separate operation, improving drilling quality and effectively saving manpower and resources. The diamond material gives this design a longer service life, significantly reducing tool changes and improving processing efficiency. Furthermore, the three cutting edges and three chip removal grooves 3 enhance cutting efficiency and reduce the size of the chips, making them easier to remove and preventing blockages.

[0026] Furthermore, in order to achieve the function of bundled fiber filaments, the width of each groove 5 is set to be narrower on the left and wider on the right; further still, in order to improve the efficiency of removing residual fiber filaments, two grooves 5 are opened on each spiral ridge 31.

[0027] With this design, the wider end can collect the fiber filaments, making it easier to insert more fiber filaments into the slot, while the narrower end can bundle the inserted fiber filaments as it rotates, making it easier to cut them later, which greatly improves work efficiency.

[0028] Example 2

[0029] like Figure 4 As shown, the structure is the same as that of Embodiment 1, except that the cutting edge 4 adopts a double-edge design, and the chip removal groove 3 is also set as two corresponding edges, and has a double spiral rising structure.

[0030] This solution reduces production difficulty and costs compared to the three-edge design, resulting in a higher rate of practical application and widespread adoption.

[0031] How this device works:

[0032] Before drilling, one end of the shank 1 is fixedly connected to an external cutting device. Then, the carbon fiber plate is fixed perpendicular to the drill rod 2. The cutting device is then operated to align the cutting end 21 with the desired drilling position on the carbon fiber plate. The cutting device is started, causing the drill rod 2 to rotate, and then the cutting edge 4 to rotate. When the carbon fiber plate is vertically extruded, since the diamond material is harder than the carbon fiber plate, the cutting edge on the cutting edge 4 can rotate and cut it, thereby achieving drilling. When the drill tube of the cutting end 21 penetrates the carbon fiber plate, some protruding fiber filaments will remain at the bottom of the drill hole. Then, after the groove 5 on the drill rod 2 has completely passed through the drill hole, the drill rod 2 is raised to pull the drill rod 2 out of the drill hole. During the extraction process, the rotating groove 5 will gather and wrap the fiber filaments remaining at the bottom of the drill hole. Then, under rotation, when the cutting edge of the cutting edge 4 passes through the bottom of the drill hole, it will cut the fiber filaments along the edge of the drill hole, thereby achieving the deburring process of the carbon fiber.

[0033] The embodiments described above merely illustrate specific implementations of this utility model, and while the descriptions are detailed, they should not be construed as limiting the scope of this 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 modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A twist drill bit for carbon fiber materials, characterized in that: Includes a shank (1), one end of which is fixedly connected to a drill rod (2), one end of which is a cutting end (21), a cutting edge (4) is provided on the cutting end (21), and a spiral chip removal groove (3) is opened on the surface of the drill rod (2), the chip removal groove (3) extends to the cutting edge of the cutting edge (4); The cutting end (21) has a groove (5) circumferentially formed, and the cross-section of the groove (5) is narrow on the left and wide on the right.

2. A twist drill bit for carbon fiber materials according to claim 1, characterized in that: The drill rod (2) and the shank (1) are integrally formed, and the drill rod (2) and the shank (1) are made of cemented carbide, while the cutting edge (4) is made of diamond.

3. A twist drill bit for carbon fiber materials according to claim 1, characterized in that: The drill rod (2) has a mounting groove (211) on its cutting end (21), and the cutting edge (4) is fixed in the mounting groove (211) by welding.

4. A twist drill bit for carbon fiber materials according to claim 1, characterized in that: The chip removal groove (3) and the surface of the drill rod (2) form a spiral ridge (31), and the groove (5) is opened through the spiral ridge (31) and the cutting edge (4).

5. A twist drill bit for carbon fiber materials according to claim 4, characterized in that: The chip removal groove (3) is provided in three places, and the three chip removal grooves (3) are evenly distributed on the drill rod (2); the cutting edge (4) is provided in a one-to-one correspondence with the chip removal groove (3).

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