Taper drill bit with chip separating groove special for carbon fiber composite material
By designing a special chip-separation groove taper drill for carbon fiber composites, the chip plugging, splitting and burr problems when processing thicker carbon fiber composites are solved, reducing costs and improving processing efficiency.
Patent Information
- Application Number
- CN202422596068.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-25
- Publication Date
- 2025-09-02
- Estimated Expiration
- 2034-10-25
AI Technical Summary
When processing thicker carbon fiber composite materials, existing tools are prone to defective phenomena such as chip blocking, splitting, edge bursting and burrs, and the mold release fabric is expensive.
A special taper drill for carbon fiber composite material with chip divider groove is designed. The side wall of the cutting head is equipped with spiral grooves and chip divider grooves. Combined with a small drill sharp angle and a large cutting cone front angle, it reduces cutting heat and friction, and the chip divider groove is V-shaped to assist chip removal.
It effectively avoids chip blockage, splitting and burr phenomena during the processing process, reduces processing costs, and improves tool life and processing efficiency.
Smart Images
Figure CN223289944U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of cutting tools, and in particular relates to a taper drill bit with a chip dividing groove specially used for carbon fiber composite materials. Background Art
[0002] like Figure 1 As shown, when using a conventional hole-making tool 100 to process a typical composite material, the thinness of the composite material generally results in fewer chips and less cutting heat, preventing chip jamming. However, machining thicker composite materials significantly increases the difficulty, as the high temperatures generated during machining can cause the chips to melt and adhere to the grooves, resulting in chip jamming.
[0003] This thick composite material has a smooth carbon fiber surface on one side and a rougher cloth surface on the other. During conventional processing, a release sheet is typically applied to the smooth surface to prevent undesirable phenomena such as splitting, cracking, bulging, and burrs during hole making. However, this release sheet is expensive and accounts for a significant portion of the processing cost. The hole-making tool 100 for this material must enter from the cloth surface and exit from the smooth surface, making it very susceptible to undesirable phenomena such as splitting, cracking, bulging, and burrs. Utility Model Content
[0004] The present invention aims to solve the above technical problems at least to a certain extent. To this end, the present invention aims to provide a taper drill bit with chip dividing grooves specially used for carbon fiber composite materials.
[0005] The technical solution adopted by this utility model is:
[0006] A taper drill bit with a chip groove specially designed for carbon fiber composite materials includes a cutter head with a spiral groove on the side wall. The cutter head includes a drill tip and a cutting cone arranged in sequence from front to back. The diameter of the cutting cone gradually increases in the direction away from the drill tip. A chip groove is provided in the middle of the cutting cone. The cross-section of the chip groove is V-shaped, and the bottom of the chip groove is inclined toward the drill tip.
[0007] Preferably, the taper drill bit with chip dividing grooves specially used for carbon fiber composite materials further includes a tool handle connected to the tool head.
[0008] The beneficial effects of the utility model are:
[0009] The utility model provides a special taper drill bit with chip dividing grooves for carbon fiber composite materials, which is suitable for processing thicker composite materials and will not cause any adverse phenomena after processing. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 It is a schematic diagram of an existing hole-making tool.
[0011] Figure 2 The utility model is a schematic diagram of a tapered drill bit with chip dividing grooves specially used for carbon fiber composite materials.
[0012] Figure 3 It is a side view of a tapered drill bit with chip dividing grooves specially used for carbon fiber composite materials according to the utility model.
[0013] Figure 4 The utility model is a partial structural diagram of a tapered drill bit with chip dividing grooves specially used for carbon fiber composite materials.
[0014] In the figure: 1-cutting head; 2-groove; 3-drill tip; 4-cutting cone; 5-chip groove; 6-shank; 100-hole making tool. DETAILED DESCRIPTION
[0015] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention and are not to be construed as limiting the present invention. The components of the embodiments of the present invention generally described and shown in the drawings herein can be arranged and designed in a variety of different configurations.
[0016] In the present invention, unless otherwise clearly specified and limited, terms such as "installed", "connected", "connected", and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two components.
[0017] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.
[0018] like Figure 2 、 Figure 3 and Figure 4 As shown, this embodiment is a tapered drill bit with a chip groove specially used for carbon fiber composite materials, including a cutter head 1 and a shank 6 connected to the cutter head 1. A spiral groove 2 is provided on the side wall of the cutter head 1. The groove 2 is polished on the front cutting surface, which is more conducive to chip removal, reduces friction, and reduces the generation of cutting heat. The groove 2 adopts a large helix angle design to increase the cutting ability of the cutting edge and facilitate chip removal. The groove 2 adopts a small back width design to increase the chip holding space and reduce the risk of chip blockage.
[0019] The cutter head 1 includes a drill tip 3 and a cutting cone 4 arranged in sequence from front to back. Compared with existing tools, the drill tip angle is made smaller, which is more conducive to processing composite materials, reducing the cutting force of the drill tip, and avoiding excessive hole size at the exit; the diameter of the cutting cone 4 gradually increases as it moves away from the drill tip 3. The cutting cone 4 can reduce the cutting force at the incision and avoid splitting. The cutting cone part has a larger rake angle, which makes it easier to cut off the fiber part at the exit, and can effectively solve the burrs generated at the exit.
[0020] Since a large amount of cutting heat is generated during the processing of composite materials, when the temperature reaches a certain range, the wear of the tool will be aggravated, affecting the service life of the tool. Therefore, a chip groove 5 is provided in the middle of the cutting cone 4. The cross-section of the chip groove 5 is V-shaped, and the bottom of the chip groove 5 is inclined toward the direction of the drill tip 3. The shape of the chip groove 5 can reduce the cutting heat and play a role in assisting reaming.
[0021] When using the improved carbon fiber composite material-specific tapered drill with chip groove, there is no need to stick a "release cloth" when processing thicker composite materials, and no adverse phenomena occur after processing.
[0022] The present invention is not limited to the above-mentioned optional implementation methods. Anyone can derive various other forms of products under the inspiration of the present invention. However, no matter what changes are made in the shape or structure, any technical solution that falls within the scope defined by the claims of the present invention shall fall within the scope of protection of the present invention.
Claims
1. A taper drill bit with chip dividing grooves specially designed for carbon fiber composite materials, characterized by: The invention comprises a cutter head (1), a spiral groove (2) is provided on the side wall of the cutter head (1), and the cutter head (1) comprises a drill tip (3) and a cutting cone (4) arranged in sequence from front to back. The diameter of the cutting cone (4) gradually increases in the direction away from the drill tip (3). A chip dividing groove (5) is provided in the middle of the cutting cone (4). The cross section of the chip dividing groove (5) is V-shaped, and the bottom of the chip dividing groove (5) is inclined toward the drill tip (3).
2. The carbon fiber composite material-specific tapered drill bit with chip dividing groove according to claim 1, characterized in that: It also includes a knife handle (6) connected to the knife head (1).