Carbon fiber drilling and milling cutter

Abstract

The utility model belongs to the technical field of milling cutters, and discloses a carbon fiber drilling and milling cutter which comprises a cutter handle, a blade part and a tip part are arranged at the front end of the cutter handle, the blade part comprises a plurality of cutting blades arranged at intervals in the circumferential direction of the cutter handle, and a chip groove is formed between every two adjacent cutting blades. By arranging the blade part and the tip part and arranging the cutting edges and the chip grooves on the blade part, carbon fiber wire harnesses in a carbon fiber plate can be cut off more easily in the machining process through the cutting edges arranged at intervals, carbon fiber chips obtained after cutting can be discharged from the chip grooves, and therefore better hole quality can be obtained; and the device can also be used for side milling of a plate wall, and better planeness and roughness are achieved on the side face.

Description

Technical Field

[0001] The utility model relates to the technical field of milling cutters, in particular to a carbon fiber drilling and milling cutter. Background Art

[0002] Carbon fiber is made of acrylic and viscose fibers as raw materials, and is made by high-temperature oxidation and carbonization. Its carbon content is above 90%. The strength of high-strength and high-modulus carbon fiber can reach 5-10 times that of the same volume of steel. It has high compressive strength. Carbon fiber is 3 times lighter than steel. It will not be affected by climate, acid, alkali and other corrosive environments. It can be used for a long time in harsh environments, so it is widely used in aerospace, automobiles, and sports equipment.

[0003] However, due to the extremely high hardness and brittleness of carbon fiber materials, they are prone to breakage during processing, making processing extremely difficult. Currently, carbon fiber materials are mostly processed using milling cutters, and most milling cutters are single-spiral ordinary high-speed steel or alloy milling cutters. Since carbon fiber materials are relatively wear-resistant, the milling cutter edge is very easy to wear. After wear, the cutting resistance increases, resulting in splitting and burrs, which affects the processing quality of the product. In addition, it will also shorten the life of the milling cutter used. Utility Model Content

[0004] In order to solve the above problems, the utility model provides a carbon fiber drilling and milling cutter.

[0005] The above technical purpose of the utility model is achieved through the following technical scheme: a carbon fiber drilling and milling cutter, including a shank, the front end of the shank is provided with a blade and a tip, the blade includes a plurality of cutting edges arranged at intervals along the circumference of the shank, and a chip groove is provided between two adjacent cutting edges.

[0006] By adopting the above technical solution, a blade and a tip are provided, and a plurality of cutting edges and chip grooves are provided on the blade. Thus, the carbon fiber bundles in the carbon fiber plate can be cut more easily during processing through the spaced-apart cutting edges, and the carbon fiber debris after cutting can be discharged from the chip groove, thereby obtaining better hole quality; it can also be used for side milling of the plate wall to achieve better flatness and roughness on the side.

[0007] Furthermore, there are four cutting edges, namely a left-handed thread edge, a mesh convex rib edge, a right-handed thread edge, and a mesh groove edge.

[0008] By adopting the above technical solution, four cutting edges with different structures are arranged so that different cutting edges contact the carbon fiber material in turn during cutting, which can effectively reduce the cutting resistance.

[0009] Furthermore, the chip removal groove extends from the end surface of the tip to the tool handle and the depth of the chip removal groove gradually becomes shallower from the tip to the tool handle.

[0010] By adopting the above technical solution, the depth of the chip removal groove is gradually reduced from the tip to the tool handle, so that it is easy to discharge the carbon fiber debris generated by cutting.

[0011] Furthermore, the tip and cutting edge surfaces are coated with a diamond coating.

[0012] By adopting the above technical solution, a diamond coating is applied to the tip and the cutting edge surface, which can be used to increase the wear resistance of the tip and the cutting edge, thereby increasing the service life of the tool.

[0013] Furthermore, a frustoconical transition section is provided at the front end of the shank, and a blade portion and a tip portion are provided at the front end of the frustoconical transition section.

[0014] By adopting the above technical solution and providing a truncated cone transition section, the connection between the handle and the blade is facilitated.

[0015] Furthermore, the tip is in the shape of a thorn formed by eight triangular inclined surfaces arranged in an alternating manner.

[0016] By adopting the above technical solution, the tip is set to be a thorn-like shape composed of eight triangular inclined surfaces arranged in a staggered manner, which makes it easier for the tool to cut the carbon fiber plate.

[0017] In summary, the utility model has the following beneficial effects: in the present application, by providing a blade portion and a tip portion, and providing a plurality of cutting edges and chip grooves on the blade portion, the carbon fiber bundles in the carbon fiber plate can be cut more easily during processing through the spaced-apart cutting edges, and the carbon fiber debris after cutting can be discharged from the chip groove, thereby obtaining better hole quality; it can also be used for side milling of the plate wall to achieve better flatness and roughness on the side. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of the utility model embodiment 1 for highlighting the left-handed thread blade;

[0019] Figure 2 This is a schematic diagram of the structure of the utility model embodiment 1 for highlighting the mesh convex rib blade;

[0020] Figure 3 This is a schematic diagram of the structure of Embodiment 1 of the utility model for highlighting the right-handed thread blade;

[0021] Figure 4 This is a schematic diagram of the structure of the utility model embodiment 1 for highlighting the mesh groove blade;

[0022] Figure 5 It is a schematic diagram of the overall structure of Example 2 of the utility model.

[0023] In the figure: 10, tool handle; 11, cone transition section; 20, blade; 21, chip groove; 22, left-handed thread blade; 23, mesh convex rib blade; 24, right-handed thread blade; 25, mesh groove blade; 30, tip. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application; obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application without making creative work are within the scope of protection of the present application.

[0025] Example 1

[0026] like Figure 1-4 As shown, the embodiment of the present application discloses a carbon fiber drilling and milling cutter, comprising a handle 10, a blade 20 and a tip 30. The handle 10 is cylindrical as a whole and is used to connect to a tool holder. The front end of the handle 10 is provided with the blade 20, and the front end of the blade 20 is provided with the tip 30.

[0027] The blade portion 20 includes four cutting blades arranged at intervals along the circumference of the shank 10 and having different blade shapes, and the length direction of the cutting blades is arranged along the length direction of the shank 10. Specifically, the four cutting blades are a left-handed thread blade 22, a mesh convex rib blade 23, a right-handed thread blade 24, and a mesh groove blade 25. The left-handed thread blade 22 is arranged opposite to the right-handed thread blade 24, and the mesh convex rib blade 23 is arranged opposite to the mesh groove blade 25. The left-handed thread blade 22 is a left-handed thread shape as a whole, and the right-handed thread blade 24 is a right-handed thread shape as a whole. The mesh convex rib blade 23 is formed by interweaving left-handed thread convex ribs and right-handed thread convex ribs as a whole, and the mesh groove blade 25 is formed by interweaving left-handed thread grooves and right-handed thread grooves as a whole. The thread morphology of the left-handed thread convex ribs and the left-handed thread grooves is consistent with the thread morphology of the left-handed thread blade 22, and the thread morphology of the right-handed thread convex ribs and the right-handed thread grooves is consistent with the thread morphology of the right-handed thread blade 24. Through the cooperation of the four cutting edges with different blade shapes, when processing the carbon fiber sheet, the cutting edges with different blade shapes alternately cut the carbon fiber bundles, and the carbon fiber bundles in the carbon fiber sheet are easier to cut without splitting and burrs. The cutting edge can also be used to perform side milling on the wall of the carbon fiber sheet. The four cutting edges cut alternately, so that the wall of the carbon fiber sheet is not cut only in one direction, and the fibers can be better cut off, and better flatness and roughness can be achieved on the side after cutting.

[0028] A chip groove 21 is also provided between two adjacent cutting edges, and the length direction of the chip groove 21 is consistent with the length direction of the cutting edge. The chip groove 21 extends from the end surface of the tip 30 to the handle 10 as a whole, and the depth of the chip groove 21 gradually becomes shallower from the tip 30 to the handle 10. In this way, when cutting the carbon fiber sheet, the carbon fiber debris after cutting can be discharged from the chip groove 21, so that better hole quality can be obtained.

[0029] The tip 30 is arranged at the front end of the blade 20, and is in the shape of a thorn composed of eight triangular inclined surfaces arranged in an interlaced manner. In this way, when drilling a hole in a carbon fiber sheet, the thorn shape of the tip 30 facilitates better finding a positioning point in the carbon fiber sheet and gradually drilling inward.

[0030] Further, the handle 10, the blade 20 and the tip 30 are all made of cemented carbide material, and the surface of the tip 30 and the cutting edge is coated with a diamond coating to make the surface more wear-resistant, thereby greatly improving the processing life of the tool.

[0031] Example 2

[0032] like Figure 5 As shown, the overall structure of this embodiment is basically the same as that of the embodiment, the only difference is that a conical transition section 11 is provided at the front end of the shank 10, the diameter of the conical transition section 11 on the side close to the shank 10 is larger than the diameter on the side away from the shank 10, and a blade 20 is provided at the front end of the conical transition section 11.

[0033] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A carbon fiber drilling and milling cutter, comprising a tool handle (10), characterized in that: The front end of the shank (10) is provided with a blade portion (20) and a tip portion (30), the blade portion (20) comprising a plurality of cutting edges arranged at intervals along the circumference of the shank (10), and a chip removal groove (21) is provided between two adjacent cutting edges; The cutting edges are provided with four, namely a left-handed thread edge (22), a mesh convex rib edge (23), a right-handed thread edge (24), and a mesh groove edge (25); The chip removal groove (21) extends from the end surface of the tip (30) to the tool handle (10), and the depth of the chip removal groove (21) gradually becomes shallower from the tip (30) toward the tool handle (10).

2. A carbon fiber drilling and milling cutter according to claim 1, characterized in that: The tip (30) and the cutting edge surface are coated with a diamond coating.

3. The carbon fiber drilling and milling cutter according to claim 1, characterized in that: The front end of the knife handle (10) is provided with a truncated cone transition section (11), and the front end of the truncated cone transition section (11) is provided with a blade portion (20) and a tip portion (30).

4. The carbon fiber drilling and milling cutter according to claim 1, characterized in that: The tip (30) is in the shape of a thorn formed by eight triangular inclined surfaces arranged in a staggered manner.

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