CN113909537A - Machining drill bit for carbon fiber reinforced resin matrix composite and aluminum alloy laminated member - Google Patents
Machining drill bit for carbon fiber reinforced resin matrix composite and aluminum alloy laminated member Download PDFInfo
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- CN113909537A CN113909537A CN202111249281.0A CN202111249281A CN113909537A CN 113909537 A CN113909537 A CN 113909537A CN 202111249281 A CN202111249281 A CN 202111249281A CN 113909537 A CN113909537 A CN 113909537A
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- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 54
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 34
- 229920000049 Carbon (fiber) Polymers 0.000 title claims abstract description 33
- 239000004917 carbon fiber Substances 0.000 title claims abstract description 33
- 239000011159 matrix material Substances 0.000 title claims abstract description 26
- 239000011347 resin Substances 0.000 title claims abstract description 26
- 229920005989 resin Polymers 0.000 title claims abstract description 26
- 239000002131 composite material Substances 0.000 title claims abstract description 20
- 238000003754 machining Methods 0.000 title claims description 12
- 238000005520 cutting process Methods 0.000 claims abstract description 171
- 239000000463 material Substances 0.000 claims description 15
- 239000000805 composite resin Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 description 17
- 230000008569 process Effects 0.000 description 13
- 239000000835 fiber Substances 0.000 description 12
- 238000005553 drilling Methods 0.000 description 9
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 6
- 229910052782 aluminium Inorganic materials 0.000 description 6
- 238000003475 lamination Methods 0.000 description 6
- 230000009471 action Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000002648 laminated material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B51/00—Tools for drilling machines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B51/00—Tools for drilling machines
- B23B51/08—Drills combined with tool parts or tools for performing additional working
Abstract
A machine-added drill bit for a carbon fiber reinforced resin matrix composite and aluminum alloy laminated member comprises: stalk portion and cutting part, the cutting part is including chisel edge, first main cutting edge, second main cutting edge and the vice cutting edge that sets gradually, first main cutting edge with second main cutting edge forms the indent structure. The cutting part comprises a chisel edge, a first main cutting edge, a second main cutting edge and an auxiliary cutting edge which are arranged in sequence, and the first main cutting edge and the second main cutting edge form an inwards concave structure.
Description
Technical Field
The invention relates to the technical field of drilling of drill bits, in particular to a machining drill bit for a carbon fiber reinforced resin matrix composite and aluminum alloy laminated member.
Background
Carbon fiber reinforced resin matrix Composite (CFRP) and aluminum alloy (Al) are widely applied to the field of aerospace due to the characteristics of high strength and light weight. CFRP/Al laminated components are used in a large number for parts such as wing rib plates, fuselage barrel sections and the like. After the laminated member is drilled, the laminated member is mechanically connected through rivets or bolts, and if burrs, tearing and other damages exist in the orifice, the fatigue strength of the member can be greatly reduced, so that the service life is influenced, and even the flight safety is threatened. Statistics shows that 70% -80% of fatigue damage of the airplane body occurs to the mutually connected parts of the mechanisms, and 80% of fatigue cracks occur at the connecting holes, so that high-quality and high-efficiency drilling of the laminated material is realized, the generation of the fatigue cracks can be reduced, and the safety of the airplane body is further ensured.
In the prior art, carbon fiber reinforced resin matrix composite materials and aluminum alloys belong to typical difficult-to-process materials, and defects such as burrs, layering, tearing and the like are easily generated at a CFRP inlet and outlet. The 7-series superhard aluminum alloy is generally adopted as the aluminum alloy, and the strength is high, the plasticity is good, so that the chip breaking is difficult in the drilling process. The long-strip-shaped aluminum scraps can scratch the machined hole wall and cause the CFRP access and exit scratches, and can also be wound on a cutter, so that cutter breakage can be caused along with the continuous winding of the aluminum scraps in the automatic hole making. In addition, the aluminum alloy is easy to generate built-up edges in the cutting process, particularly under the condition that the aviation component is generally subjected to dry cutting, and the built-up edges can affect the quality of the hole wall and cause the bonding abrasion of the cutter. In addition, because the bottom of the aluminum alloy plate is not supported, the aluminum alloy which is subjected to plastic deformation under the action of axial force forms a bulge, after a drill bit is drilled out, burrs are generated at an outlet of the aluminum alloy plate and are remained, the processing quality is influenced, and the deburring process can seriously influence the processing efficiency.
The existing processing route of the carbon fiber reinforced resin matrix composite and aluminum alloy laminated member is as follows: drilling, rough reaming, fine reaming and deburring, wherein the single-hole drilling time is as long as 2min, and the service life of the drill bit is only about 50 holes. The single-hole drilling time is long, and the service life of the drill bit is short, so that the laminated drilling becomes a workshop bottleneck process, and the output is seriously influenced.
Therefore, how to provide a machining drill for a carbon fiber reinforced resin matrix composite and aluminum alloy laminated member to improve the chip breaking capacity and the adhesion resistance of the drill becomes an urgent technical problem to be solved.
Disclosure of Invention
The invention aims to provide a machining drill bit for a carbon fiber reinforced resin matrix composite and aluminum alloy laminated component, so as to improve the chip breaking capacity and the adhesion resistance of the drill bit.
To this end, according to a first aspect, an embodiment of the present invention discloses a machining drill for a carbon fiber reinforced resin-based composite material and aluminum alloy laminated member, including: stalk portion and cutting part, the cutting part is including chisel edge, first main cutting edge, second main cutting edge and the vice cutting edge that sets gradually, first main cutting edge with second main cutting edge forms the indent structure. The chisel edge is favorable for guaranteeing the centering capacity of the drill bit, the axial force of the drill bit can be reduced by properly reducing the chisel edge, further, the deformation and the outlet processing damage of the laminated component are reduced, the CFRP fibers can be cut off efficiently by the concave structure, the aluminum alloy outlet is free of burrs, and good chip breaking is realized, so that the machining drill bit for the carbon fiber reinforced resin matrix composite and the aluminum alloy laminated component is provided, and the chip breaking capacity and the anti-bonding performance of the drill bit are improved.
The invention is further provided that the handle part and the blade part are of an integrally formed structure. Because the handle part and the cutting part are of an integrally formed structure, the stability of the drill bit is improved, and the drill bit can conveniently drill the laminated member of the carbon fiber reinforced resin matrix composite material and the aluminum alloy.
The invention further provides that the length of the chisel edge is between 1/20 and 1/10 of the drill diameter. Research shows that about 60% of axial force is concentrated on the chisel edge part in the drilling process, and the axial force of drilling is reduced by shortening the chisel edge, so that the delamination and tearing damage of the composite material inlet and outlet are reduced. However, the chisel edge is too short, which results in low strength and easy chipping.
The invention is further provided that the secondary cutting edge is helically arranged with a helix angle of 20-40 °. The helical angle is the rake angle of the second main cutting edge, so that the sharpness of the helical angle is ensured, the fibers can be effectively cut off, and meanwhile, the burrs at the outlet of the aluminum alloy can also be reduced. A larger helix angle also allows smoother chip removal.
The invention is further provided that the apex angle of the first main cutting edge is 110-150 °. The larger top angle increases the chip thickness and contributes to breaking of the aluminum alloy chips. And the rake face of the first main cutting edge is ground to form a rake angle of 5-10 degrees, so that the axial force is further reduced.
The invention is further provided that the apex angle of the second main cutting edge is 120-170 °. The larger vertex angle is matched with the spiral rake angle of 10-15 degrees, so that the second main cutting edge is concave, and the shape is beneficial to breaking aluminum scraps. The first main cutting edge and the second main cutting edge form an inwards concave structure, and when aluminum alloy is cut, chips generated by the two cutting edges collide with each other and are extruded, so that the deformation of aluminum chips is increased, and the aluminum chips are more easily broken to form C-shaped chips.
The invention is further set that the surface of the groove is polished to enable the surface roughness to reach Ra0.1, and in addition, a special coating is used, so that the friction force between chips and a cutter, and between a workpiece and the cutter is reduced, and the aluminum chip bonding resistance of the cutter is greatly improved.
The invention has the following beneficial effects: the cutting part is including the chisel edge that sets gradually, first main cutting edge, second main cutting edge and vice cutting edge, first main cutting edge forms the indent structure with second main cutting edge, the chisel edge guarantees the centering ability of drill bit, and reduce the axial force of drill bit, and then reduce the stromatolite component and warp and export the processing damage, the indent structure can high-efficient cutting-off CFRP fibre and realize that the aluminum alloy export is burr-free, good chip breaking has been realized, thereby a machine that is used for carbon fiber reinforced resin matrix combined material and aluminum alloy stromatolite component adds the drill bit, the chip breaking ability and the anti-adhesion nature of drill bit have been promoted.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic structural diagram of a machining drill for a carbon fiber reinforced resin matrix composite and aluminum alloy laminated member disclosed in the present embodiment;
fig. 2 is an enlarged schematic view at I of fig. 1.
Reference numerals: 1. a handle; 2. a blade part; 21. a chisel edge; 22. a first main cutting edge; 23. a second main cutting edge; 24. and a secondary cutting edge.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; the two elements may be directly connected or indirectly connected through an intermediate medium, or may be communicated with each other inside the two elements, or may be wirelessly connected or wired connected. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
First embodiment
The embodiment of the invention discloses a machining drill bit for a carbon fiber reinforced resin matrix composite and aluminum alloy laminated member, which comprises the following components in percentage by weight as shown in figures 1 and 2: the cutting edge part 2 comprises a chisel edge 21, a first main cutting edge 22, a second main cutting edge 23 and an auxiliary cutting edge 24 which are arranged in sequence, and the first main cutting edge 22 and the second main cutting edge 23 form a concave structure. In the specific implementation process, the number of the first main cutting edge 22 and the second main cutting edge 23 is set to be two, and the connecting part of the second main cutting edge 23 and the secondary cutting edge 24 forms a tip part, so that the drill has three tip parts, thereby forming a drill with a three-tip structure.
It should be noted that the cutting part 2 includes the chisel edge 21, the first main cutting edge 22, the second main cutting edge 23 and the auxiliary cutting edge 24 that set gradually, the first main cutting edge 22 and the second main cutting edge 23 form the indent structure, the chisel edge 21 guarantees the centering ability of drill bit, and reduce the axial force of drill bit, and then reduce the deformation of lamination component and export processing damage, the indent structure can cut off the CFRP fibre with high efficiency and realize that the aluminum alloy export is burr-free, good chip breaking has been realized, thereby a machine that is used for carbon fiber reinforced resin matrix combined material and aluminum alloy lamination component adds the drill bit, chip breaking ability and the anti-adhesion of drill bit have been promoted.
As shown in fig. 1 and 2, the shank 1 and the blade 2 are formed integrally. In the specific implementation process, the handle part 1 and the blade part 2 are of an integrally formed structure, so that the stability of the drill bit is improved, and the drill bit can conveniently drill holes in the carbon fiber reinforced resin matrix composite and aluminum alloy laminated components.
As shown in fig. 2, the length of the chisel edge 21 is between 1/20 and 1/10 of the drill diameter.
In the specific implementation process, the chisel edge 21 adopts a cross-shaped grinding method, and the length of the chisel edge 21 is 1/12d, so that the centering capacity of the drill is ensured through the chisel edge 21, the axial force of the drill is reduced, and the deformation of the laminated member and the processing damage of an outlet are reduced.
As shown in fig. 1 and 2, the minor cutting edge 24 is provided in a spiral shape. The cutting action of the secondary cutting edge 24 facilitates hole making and chip removal.
As shown in fig. 1 and 2, the apex angle phi of the first major cutting edge 221Is 110 to 150 degrees. In the specific implementation, the apex angle φ of the first major cutting edge 221Is 118 deg..
As shown in fig. 1 and 2, the apex angle phi of the second major cutting edge 232Is 120 to 170 degrees. In the specific implementation, the vertex angle phi of the second main cutting edge 232Is 160 deg.. It should be noted that, the concave structure formed by the first main cutting edge 22 and the second main cutting edge 23 can ensure the sharpness of the cutting edges, cut off the CFRP fibers well, and realize no burr at the aluminum alloy outlet, and realize good chip breaking.
As shown in fig. 1, the number of the first major cutting edge 22 and the second major cutting edge 23 is two, wherein the diameter of the shank 1 is D, and the diameter of the first major cutting edge 22 is D1The second major cutting edge 23 has an edge diameter d and the minor cutting edge 24 has a length L equal to 0.4d1The length of the handle part 1 is L2The length of the drill bit is L. In the specific implementation, the horizontal distance between the chisel edge 21 and the minor cutting edge 24 is h.
The working principle is as follows: cutting part 2 is including the chisel edge 21 that sets gradually, first main cutting edge 22, second main cutting edge 23 and vice cutting edge 24, first main cutting edge 22 forms the indent structure with second main cutting edge 23, chisel edge 21 guarantees the centering ability of drill bit, and reduce the axial force of drill bit, and then reduce the deformation of stromatolite component and export processing damage, the indent structure can high-efficient cutting CFRP fibre and realize that the aluminum alloy export is burr-free, good chip breaking has been realized, thereby a machine that is used for carbon fiber reinforced resin matrix combined material and aluminum alloy stromatolite component adds the drill bit has been provided, the chip breaking ability and the anti-adhesion nature of drill bit have been promoted.
Second embodiment
The embodiment of the invention discloses a machining drill bit for a carbon fiber reinforced resin matrix composite and aluminum alloy laminated member, which comprises the following components in percentage by weight as shown in figures 1 and 2: the cutting edge part 2 comprises a chisel edge 21, a first main cutting edge 22, a second main cutting edge 23 and an auxiliary cutting edge 24 which are arranged in sequence, and the first main cutting edge 22 and the second main cutting edge 23 form a concave structure. In the specific implementation process, the number of the first main cutting edge 22 and the second main cutting edge 23 is set to be two, and the connecting part of the second main cutting edge 23 and the secondary cutting edge 24 forms a tip part, so that the drill has three tip parts, thereby forming a drill with a three-tip structure.
It should be noted that the cutting part 2 includes the chisel edge 21, the first main cutting edge 22, the second main cutting edge 23 and the auxiliary cutting edge 24 that set gradually, the first main cutting edge 22 and the second main cutting edge 23 form the indent structure, the chisel edge 21 guarantees the centering ability of drill bit, and reduce the axial force of drill bit, and then reduce the deformation of lamination component and export processing damage, the indent structure can cut off the CFRP fibre with high efficiency and realize that the aluminum alloy export is burr-free, good chip breaking has been realized, thereby a machine that is used for carbon fiber reinforced resin matrix combined material and aluminum alloy lamination component adds the drill bit, chip breaking ability and the anti-adhesion of drill bit have been promoted.
As shown in fig. 1 and 2, the shank 1 and the blade 2 are formed integrally. In the specific implementation process, the handle part 1 and the blade part 2 are of an integrally formed structure, so that the stability of the drill bit is improved, and the drill bit can conveniently drill holes in the carbon fiber reinforced resin matrix composite and aluminum alloy laminated components.
As shown in fig. 2, the length of the chisel edge 21 is between 1/20 and 1/10 of the drill diameter.
In the specific implementation process, the chisel edge 21 adopts a cross-shaped grinding method, and the length of the chisel edge 21 is 1/12d, so that the centering capacity of the drill is ensured through the chisel edge 21, the axial force of the drill is reduced, and the deformation of the laminated member and the processing damage of an outlet are reduced.
As shown in fig. 1 and 2, the minor cutting edge 24 is provided in a spiral shape. The cutting action of the secondary cutting edge 24 facilitates hole making and chip removal.
As shown in fig. 1 and 2, the apex angle phi of the first major cutting edge 221Is 110 to 150 degrees. In the specific implementation, the apex angle φ of the first major cutting edge 221Is 118 deg..
As shown in fig. 1 and 2, the apex angle phi of the second major cutting edge 232Is 120 to 170 degrees. In the specific implementation, the vertex angle phi of the second main cutting edge 232Is 160 deg.. In addition, the first stepThe concave structure formed by the main cutting edge 22 and the second main cutting edge 23 can ensure the sharpness of the cutting edges, cut off CFRP fibers well, realize no burrs at the outlet of the aluminum alloy and realize good chip breaking.
As shown in fig. 1, the number of the first major cutting edge 22 and the second major cutting edge 23 is two, wherein the diameter of the shank 1 is D, and the diameter of the first major cutting edge 22 is D1The second major cutting edge 23 has an edge diameter d and the minor cutting edge 24 has a length L equal to 0.8d1The length of the handle part 1 is L2The length of the drill bit is L. In the specific implementation, the horizontal distance between the chisel edge 21 and the minor cutting edge 24 is h.
The working principle is as follows: cutting part 2 is including the chisel edge 21 that sets gradually, first main cutting edge 22, second main cutting edge 23 and vice cutting edge 24, first main cutting edge 22 forms the indent structure with second main cutting edge 23, chisel edge 21 guarantees the centering ability of drill bit, and reduce the axial force of drill bit, and then reduce the deformation of stromatolite component and export processing damage, the indent structure can high-efficient cutting CFRP fibre and realize that the aluminum alloy export is burr-free, good chip breaking has been realized, thereby a machine that is used for carbon fiber reinforced resin matrix combined material and aluminum alloy stromatolite component adds the drill bit has been provided, the chip breaking ability and the anti-adhesion nature of drill bit have been promoted.
Third embodiment
The embodiment of the invention discloses a machining drill bit for a carbon fiber reinforced resin matrix composite and aluminum alloy laminated member, which comprises the following components in percentage by weight as shown in figures 1 and 2: the cutting edge part 2 comprises a chisel edge 21, a first main cutting edge 22, a second main cutting edge 23 and an auxiliary cutting edge 24 which are arranged in sequence, and the first main cutting edge 22 and the second main cutting edge 23 form a concave structure. In the specific implementation process, the number of the first main cutting edge 22 and the second main cutting edge 23 is set to be two, and the connecting part of the second main cutting edge 23 and the secondary cutting edge 24 forms a tip part, so that the drill has three tip parts, thereby forming a drill with a three-tip structure.
It should be noted that the cutting part 2 includes the chisel edge 21, the first main cutting edge 22, the second main cutting edge 23 and the auxiliary cutting edge 24 that set gradually, the first main cutting edge 22 and the second main cutting edge 23 form the indent structure, the chisel edge 21 guarantees the centering ability of drill bit, and reduce the axial force of drill bit, and then reduce the deformation of lamination component and export processing damage, the indent structure can cut off the CFRP fibre with high efficiency and realize that the aluminum alloy export is burr-free, good chip breaking has been realized, thereby a machine that is used for carbon fiber reinforced resin matrix combined material and aluminum alloy lamination component adds the drill bit, chip breaking ability and the anti-adhesion of drill bit have been promoted.
As shown in fig. 1 and 2, the shank 1 and the blade 2 are formed integrally. In the specific implementation process, the handle part 1 and the blade part 2 are of an integrally formed structure, so that the stability of the drill bit is improved, and the drill bit can conveniently drill holes in the carbon fiber reinforced resin matrix composite and aluminum alloy laminated components.
As shown in fig. 2, the length of the chisel edge 21 is between 1/20 and 1/10 of the drill diameter. In the specific implementation process, the chisel edge 21 adopts a cross-shaped grinding method, and the length of the chisel edge 21 is 1/12d, so that the centering capacity of the drill is ensured through the chisel edge 21, the axial force of the drill is reduced, and the deformation of the laminated member and the processing damage of an outlet are reduced.
As shown in fig. 1 and 2, the minor cutting edge 24 is provided in a spiral shape. The cutting action of the secondary cutting edge 24 facilitates hole making and chip removal.
As shown in fig. 1 and 2, the apex angle phi of the first major cutting edge 221Is 80 to 100 degrees. In the specific implementation, the apex angle φ of the first major cutting edge 221Is 90 deg..
As shown in fig. 1 and 2, the apex angle phi of the second major cutting edge 232Is 120 to 170 degrees. In the specific implementation, the vertex angle phi of the second main cutting edge 232Is 150 deg.. It should be noted that, the concave structure formed by the first main cutting edge 22 and the second main cutting edge 23 can ensure the sharpness of the cutting edges, cut off the CFRP fibers well, and realize no burr at the aluminum alloy outlet, and realize good chip breaking.
As shown in fig. 1, the number of the first major cutting edge 22 and the second major cutting edge 23 is two, wherein the diameter of the shank 1 is D, and the diameter of the first major cutting edge 22 is D1The second major cutting edge 23 has an edge diameter d and the minor cutting edge 24 has a length d equal to 0.4dDegree L1The length of the handle part 1 is L2The length of the drill bit is L. In the specific implementation, the horizontal distance between the chisel edge 21 and the minor cutting edge 24 is h.
The working principle is as follows: cutting part 2 is including the chisel edge 21 that sets gradually, first main cutting edge 22, second main cutting edge 23 and vice cutting edge 24, first main cutting edge 22 forms the indent structure with second main cutting edge 23, chisel edge 21 guarantees the centering ability of drill bit, and reduce the axial force of drill bit, and then reduce the deformation of stromatolite component and export processing damage, the indent structure can high-efficient cutting CFRP fibre and realize that the aluminum alloy export is burr-free, good chip breaking has been realized, thereby a machine that is used for carbon fiber reinforced resin matrix combined material and aluminum alloy stromatolite component adds the drill bit has been provided, the chip breaking ability and the anti-adhesion nature of drill bit have been promoted.
The following table is a comparison of the cutting effect of a standard twist drill and various embodiments of the present invention:
it should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (8)
1. A machine-added drill bit for carbon fiber reinforced resin matrix composite and aluminum alloy laminated components is characterized by comprising: stalk portion (1) and cutting part (2), cutting part (2) are including chisel edge (21), first main cutting edge (22), second main cutting edge (23) and the minor cutting edge (24) that set gradually, first main cutting edge (22) with second main cutting edge (23) form the indent structure.
2. The machining drill for the carbon fiber reinforced resin based composite material and aluminum alloy laminated member according to claim 1, characterized in that the shank (1) and the blade (2) are of an integrally formed structure.
3. Machine drill for carbon fiber reinforced resin based composite and aluminum alloy laminate members according to claim 1, characterized in that the length of the chisel edge (21) is between 1/20 and 1/10 of the drill diameter.
4. The machine-applied drill for laminated carbon fiber reinforced resin-based composite material and aluminum alloy members as claimed in claim 1, wherein the secondary cutting edge (24) is spirally disposed.
5. The machine-applied drill for carbon fiber reinforced resin based composite material and aluminum alloy laminate member as recited in any one of claims 1 to 4, wherein the apex angle of the first main cutting edge (22) is 110 to 150 °.
6. The machine-applied drill for carbon fiber reinforced resin based composite material and aluminum alloy laminate member as recited in any one of claims 1 to 4, wherein the apex angle of the second main cutting edge (23) is 120 to 170 °.
7. The machine-applied drill for carbon fiber reinforced resin based composite material and aluminum alloy laminate member as recited in any one of claims 1 to 4, wherein the length of the chisel edge (21) is between 1/20 and 1/10 of the drill diameter.
8. The machine-applied drill bit for carbon fiber reinforced resin based composite material and aluminum alloy laminate member as recited in any one of claims 1 to 4, wherein the apex angle of said first main cutting edge (22) is 118 °, the apex angle of said second main cutting edge (23) is 160 °, and the length of said chisel edge (21) is 1/12 d.
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| CN202111249281.0A CN113909537A (en) | 2021-10-26 | 2021-10-26 | Machining drill bit for carbon fiber reinforced resin matrix composite and aluminum alloy laminated member |
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| CN202111249281.0A CN113909537A (en) | 2021-10-26 | 2021-10-26 | Machining drill bit for carbon fiber reinforced resin matrix composite and aluminum alloy laminated member |
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| CN101574745A (en) * | 2008-05-09 | 2009-11-11 | 山特维克知识产权股份有限公司 | Drill body |
| CN103157834A (en) * | 2013-03-28 | 2013-06-19 | 苏州阿诺精密切削技术股份有限公司 | Drill bit with low chisel edge |
| CN110480747A (en) * | 2019-09-23 | 2019-11-22 | 苏州阿诺精密切削技术有限公司 | A kind of drill bit suitable for laminated component drilling |
| CN210705125U (en) * | 2019-09-23 | 2020-06-09 | 苏州阿诺精密切削技术有限公司 | Drill bit suitable for laminated member hole making |
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