Staggered tooth type milling cutter for processing carbon fibers
By designing an end mill with unequally divided cutting edges on the end face and staggered tooth profiles with unequal helix angles for odd and even teeth, the resonance and wear problems when machining carbon fiber materials were solved, extending tool life and improving surface quality.
Patent Information
- Application Number
- CN202422623474.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-29
- Publication Date
- 2025-11-07
- Estimated Expiration
- 2034-10-29
AI Technical Summary
In the existing technology, standard end mills and PCD end mills are prone to problems such as short tool life and poor surface quality when machining carbon fiber materials, especially wear and burrs caused by resonance.
Design an interleaved tooth end mill with unequally divided cutting edge angles on the end face, and unequal helix angles and clearance angles for odd and even teeth. Combined with a diamond coating, this improves the tool's wear resistance and cutting efficiency.
It effectively reduces resonance, extends tool life, improves surface finish, reduces cutting deformation and tool drop risk, and enhances chip removal capability.
Smart Images
Figure CN223518720U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a milling cutter, in particular to an interlaced tooth type milling cutter for processing carbon fiber. BACKGROUND
[0002] Carbon fiber reinforced composite material (CFRP) is a composite material formed by taking carbon fiber or carbon fiber fabric as reinforcing body and taking resin, ceramic, metal, cement, carbon or rubber as matrix. Among many lightweight materials, it has high specific strength and specific rigidity, and obvious lightweight effect, and is widely applied in aerospace and military products.
[0003] At present, in order to ensure the surface processing quality of the processed carbon fiber material, a standard milling cutter or a PCD straight blade milling cutter is usually used for processing, the carbon fiber lower surface quality processed by the standard milling cutter can be good, but burrs are prone to appear on the upper surface, leading to low tool life. Because of the straight blade, the rigidity of the carbon fiber processed by the PCD milling cutter is slightly poor, so that the carbon fiber material resonates when being processed, thereby causing the wear of the tool edge and reducing the service life of the tool. SUMMARY
[0004] To solve the defects of the prior art, the utility model provides an interlaced tooth type milling cutter for processing carbon fiber, the blade edge included angle of the end face multi-blade of the utility model is not equally divided, the odd tooth helix angle of the odd tooth peripheral blade and the even tooth helix angle are not equal, and the odd tooth peripheral blade clearance angle and the even tooth peripheral blade clearance angle are not equal, so that the resonance problem of the interlaced tooth type milling cutter when processing carbon fiber material is reduced, thereby reducing the wear of the tool edge, prolonging the tool life, and ensuring the surface quality of the processed workpiece.
[0005] To achieve the above technical purpose, the utility model adopts the following technical scheme: an interlaced tooth type milling cutter for processing carbon fiber, comprising a tool shank and a tool edge arranged at one end of the tool shank, the tool edge comprises an end blade part and a peripheral blade part, the end blade part is arranged at one end of the tool edge away from the tool shank, the end blade part comprises a plurality of end blades, and the blade edge included angles of the plurality of end blades are not equally divided.
[0006] The peripheral blade part is arranged at the outer periphery of the tool edge, the peripheral blade part comprises a plurality of front peripheral blades and a plurality of rear peripheral blades, the starting point of the front peripheral blade is connected with the end blade, the front peripheral blade is a right-handed right-cut structure, and the rear peripheral blade is a left-handed right-cut structure; the front peripheral blade and the rear peripheral blade have an interlaced blade part.
[0007] The right-handed helix angle of the odd tooth of the front peripheral blade is not equal to the right-handed helix angle of the even tooth, and the left-handed helix angle of the odd tooth of the rear peripheral blade is not equal to the left-handed helix angle of the even tooth.
[0008] The blade edge included angles of adjacent end blades are different by 8-12°.
[0009] The number of end edges is 4, and the edge included angles of the end edges are 84-86°, 94-96°, 84-86° and 94-96° respectively, and the sum of the four edge included angles is 360°.
[0010] The left and right deviation of the two edges of the end edge to the tooth edge is L5=0.18-0.22mm, the up and down deviation is L6=0.7-0.8mm, the short tooth pitch of the end edge is L7=1.9-2mm, the expansion tooth width is L8=0.8-0.9mm, the end tooth rake angle a7=9-12°, the first end tooth relief angle a8=6-8°, the second end tooth relief angle a9=20-23°, and the first end tooth relief angle width L4=0.7-0.8mm.
[0011] The odd tooth of the front peripheral edge is not equal to the even tooth in the peripheral edge relief angle, the odd tooth of the rear peripheral edge is not equal to the even tooth in the peripheral edge relief angle, the odd tooth of the rear peripheral edge is equal to the odd tooth of the front peripheral edge in the peripheral edge relief angle, and the even tooth of the rear peripheral edge is equal to the even tooth of the front peripheral edge in the peripheral edge relief angle.
[0012] The peripheral edge rake angle of the odd and even tooth of the front peripheral edge and the peripheral edge rake angle a3=10-12° of the odd and even tooth of the rear peripheral edge.
[0013] The first peripheral edge relief angle a41=11-13°, the second peripheral edge relief angle a51=36-38°, the third peripheral edge relief angle a61=46-50°, the first peripheral edge relief angle width L21=0.6-0.7mm, the second peripheral edge relief angle width L11=1.8-1.9mm, and the tooth back width L31=2.5-2.6mm of the odd tooth of the front peripheral edge, the first peripheral edge relief angle a42=9-11°, the second peripheral edge relief angle a52=34-36°, the third peripheral edge relief angle a62=43-47°, the first peripheral edge relief angle width L22=0.55-0.65mm, the second peripheral edge relief angle width L12=1.75-1.85mm, and the tooth back width L32=2.4-2.5mm of the even tooth of the front peripheral edge.
[0014] The left-hand edge length starting point D6=6.7-7mm of the rear peripheral edge, the right-hand edge length D5=7.9-8.1mm, and the butterfly angle a10=4-6°.
[0015] The chip groove is arranged between the adjacent end edges, and the angle a13=38-42° of the chip groove.
[0016] The edge surface is coated with a diamond coating, and the diamond coating structure adopts a nano-composite alternating structure.
[0017] According to the utility model, the following technical effects are achieved:
[0018] The blade edge of the end face multi-blade of the staggered tooth type milling cutter is not equally divided, the odd tooth helix angle of the peripheral blade is not equal to the even tooth helix angle, and the odd tooth peripheral blade clearance angle is not equal to the even tooth peripheral blade clearance angle, the resonance problem of the staggered tooth type milling cutter when processing carbon fiber material is reduced, thereby reducing the wear of the cutter blade edge, prolonging the tool life, and ensuring the surface quality of the processed workpiece;
[0019] The left-hand and right-hand helix angles of the staggered tooth type milling cutter are different, compared with other same type milling cutters, the size of the left-hand and right-hand helix angles is reduced, the cutting force in the peripheral blade direction is increased, the axial direction cutting force is reduced, the workpiece deformation in cutting is reduced, the tool breaking risk is reduced, the helix angle is reduced, the tool chip removal is more smooth, compared with the common left-hand and right-hand blade length stagger length 0.6-0.8mm, the milling cutter can be increased to L9=1.4-1.6mm, the cutting amount of each tooth at the staggered position is indirectly reduced, and the tool life is improved;
[0020] The peripheral blade one clearance angle is a chisel back clearance angle, and the strength is slightly higher than that of a straight line clearance angle;
[0021] The end face tooth gap angle of the utility model is larger than that of other same type milling cutters, and the chip removal space is larger;
[0022] The cutter blade surface is coated with a diamond coating, and the structure adopts nano composite alternation, so that the hardness and wear resistance are improved. BRIEF DESCRIPTION OF DRAWINGS
[0023] Figure 1 A staggered tooth type milling cutter for processing carbon fiber is shown in the front view.
[0024] Figure 2 is Figure 1 a three-dimensional schematic view.
[0025] Figure 3 is Figure 1 a left view.
[0026] Figure 4 is an end blade cross section schematic view.
[0027] Figure 5 is an odd tooth peripheral blade clearance angle schematic view of the peripheral blade.
[0028] Figure 6 is an even tooth peripheral blade clearance angle schematic view of the peripheral blade.
[0029] Figure 7 is a chip pocket cross section schematic view. DETAILED DESCRIPTION
[0030] The utility model will be further described in detail in combination with the drawings.
[0031] The specific embodiments are merely illustrative of the present application, and are not intended to limit the present application, and those skilled in the art can make modifications to the embodiments without creative contribution after reading the specification, as long as the modifications are within the scope of the claims of the present application.
[0032] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are merely for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.
[0033] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.
[0034] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0035] In the present application, unless otherwise specifically defined and limited, the first feature "on" or "under" the second feature can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.
[0036] Embodiment:
[0037] Figure 1 A staggered-tooth milling cutter for processing carbon fiber, Figure 2 is Figure 1 a perspective view, including a shank and a cutting edge arranged at one end of the shank, the cutting edge including an end edge portion and a peripheral edge portion, the end edge portion being arranged at an end of the cutting edge away from the shank, the end edge portion including a plurality of end edges, the included angles of the plurality of end edges being unequal;
[0038] wherein, Figure 3 is Figure 1 a left view, Figure 4 is an end edge cross-sectional view, the included angles of adjacent end edges differ by 8-12°.
[0039] Further, the number of end edges in the embodiment is four, the included angles of the end edges are 84-86°, 94-96°, 84-86°, and 94-96° respectively, and the sum of the four included angles is 360°, which in this embodiment is 86°, 94°, 86°, and 94° respectively.
[0040] The left-right deviation of the end edge to the tooth edge is L5=0.18-0.22mm, the up-down deviation is L6=0.7-0.8mm, the short tooth pitch of the end edge is L7=1.9-2mm, the expansion tooth width is L8=0.8-0.9mm, the end tooth rake angle a7=9-12°, the first end tooth relief angle a8=6-8°, the second end tooth relief angle a9=20-23°, and the first end tooth relief angle width L4=0.7-0.8mm. In this embodiment, L5=0.2mm, L6=0.76mm, L7=1.94mm, L8=0.87mm, a7=10.5°, a8=7°, a9=21.5°, and L4=0.75mm.
[0041] The end face multi-edge has unequal included angles, which reduces the resonance problem when the staggered-tooth milling cutter processes carbon fiber material, and improves the strength of the entire milling cutter.
[0042] As shown in Figure 1 , the peripheral edge portion is arranged at the outer periphery of the cutting edge, the peripheral edge portion includes a plurality of front peripheral edges and a plurality of rear peripheral edges, the start point of the front peripheral edge is connected to the end edge, the front peripheral edge is a right-handed right-cut structure, and the rear peripheral edge is a left-handed right-cut structure. The front peripheral edge and the rear peripheral edge have an interlaced edge portion.
[0043] The right-handed helix angle of the odd-numbered teeth of the front peripheral edge is not equal to the right-handed helix angle of the even-numbered teeth, and the left-handed helix angle of the odd-numbered teeth of the rear peripheral edge is not equal to the left-handed helix angle of the even-numbered teeth.
[0044] Specifically, in the embodiment, the right-hand odd-week blade helix angle a11 and the left-hand odd-week blade helix angle a21 are both 30°, the right-hand even-week blade helix angle a12 and the left-hand even-week blade helix angle a22 are both 25°, the right-hand odd-week blade helix angle a11 and the right-hand even-week blade helix angle a12 adopt the mode that the blade helix angles are not equal, the left-hand odd-week blade helix angle a21 and the left-hand even-week blade helix angle a22 adopt the mode that the blade helix angles are not equal, compared with other same type milling cutters, the helix angle of the left-hand and the right-hand is reduced, the cutting force in the peripheral direction is increased, the axial direction cutting force is reduced, the workpiece deformation in cutting is reduced, the tool risk of falling is reduced, the helix angle is reduced, the tool chip removal is more smooth, compared with the common left-hand and right-hand blade stagger length 0.6-0.8mm, the milling cutter left-hand and right-hand stagger blade length can be increased to L9=1.4-1.6mm, the cutting amount of each tooth at the stagger position is reduced, the tool life is improved.
[0045] In the utility model, the peripheral relief angle of the odd teeth of the front peripheral edge is not equal to the peripheral relief angle of the even teeth, the peripheral relief angle of the odd teeth of the rear peripheral edge is not equal to the peripheral relief angle of the even teeth, the peripheral relief angle of the odd teeth of the rear peripheral edge is equal to the peripheral relief angle of the odd teeth of the front peripheral edge, the peripheral relief angle of the even teeth of the rear peripheral edge is equal to the peripheral relief angle of the even teeth of the front peripheral edge.
[0046] Specifically, the peripheral rake angles are same, in the embodiment, the peripheral rake angle of the odd and even teeth of the front peripheral edge, the peripheral rake angle a3 of the odd and even teeth of the rear peripheral edge is 10-12°, in the embodiment, a3=11°.
[0047] As shown in the figure, Figure 5 , Figure 6 As shown in the figure, the peripheral one rear angle a41 of the odd teeth of the front peripheral edge is 11-13°, the peripheral two rear angle a51 is 36-38°, the peripheral three rear angle a61 is 46-50°, the peripheral one rear angle width L21 is 0.6-0.7mm, the peripheral two rear angle width L11 is 1.8-1.9mm, the tooth back width L31 is 2.5-2.6mm, the peripheral one rear angle a42 of the even teeth of the front peripheral edge is 9-11°, the peripheral two rear angle a52 is 34-36°, the peripheral three rear angle a62 is 43-47°, the peripheral one rear angle width L22 is 0.55-0.65mm, the peripheral two rear angle width L12 is 1.75-1.85mm, the tooth back width L32 is 2.4-2.5mm.
[0048] In the embodiment, a41=12°, a51=37°, a61=48°, L21=0.65mm, L11=1.85mm, L31=2.53mm, a42=10°, a52=35°, a62=45°, L22=0.6mm, L12=1.8mm, L32=2.45mm.
[0049] The above are the peripheral clearance angles of the odd and even teeth of the right-hand peripheral edge given by the present embodiment, the peripheral clearance angle of the odd teeth of the left-hand peripheral edge is the same as that of the odd teeth of the right-hand peripheral edge, and the peripheral clearance angle of the even teeth of the left-hand peripheral edge is the same as that of the even teeth of the right-hand peripheral edge.
[0050] The left-hand edge length of the rear peripheral edge is D6=6.7-7mm, the right-hand edge length is D5=7.9-8.1mm, and the butterfly angle a10=4-6°. In the present embodiment, D6=6.85mm, D5=8mm, and a10=5°. The edge diameter D1=6mm, the total edge length D4=16mm, the shank diameter D2=6mm, D3=total length 65mm, and the core thickness D7=3.65mm.
[0051] A chip groove is arranged between the adjacent end edges, as shown in Figure 7 The angle of the chip groove is a13=38-42°.
[0052] The cutting edge surface is coated with a diamond coating, and the diamond coating structure adopts a nano-composite alternating structure.
[0053] When the staggered tooth type milling cutter is used to process carbon fiber material, the right-hand right-cutting edge applies upward axial cutting force to the lower surface of the carbon fiber material, and the left-hand right-cutting edge applies downward axial cutting force to the upper surface of the carbon fiber material, thereby reducing the delamination phenomenon of the upper and lower surfaces after material processing and the uncut phenomenon of the fibers, and ensuring the quality of the upper and lower surfaces of the carbon fiber material.
[0054] The above is only a preferred embodiment of the present utility model, and does not limit the present utility model in any form. Any simple modification, equivalent change and modification made according to the technical essence of the present utility model are within the scope of the present utility model technical scheme.
Claims
1. An intermeshing tooth milling cutter for processing carbon fibres, characterised in that: The tool shank and the tool edge arranged at one end of the tool shank, the tool edge comprises an end edge part and a peripheral edge part, the end edge part is arranged at the end of the tool edge away from the tool shank, the end edge part comprises a plurality of end edges, the included angles of the plurality of end edges are not equal; The peripheral edge part is arranged at the outer periphery of the tool edge, the peripheral edge part comprises a plurality of front peripheral edges and a plurality of rear peripheral edges, the start point of the front peripheral edge is connected with the end edge, the front peripheral edge is a right-handed right-cut structure, and the rear peripheral edge is a left-handed right-cut structure; the front peripheral edge and the rear peripheral edge have an interlaced edge part; The right-handed helix angle of the odd-numbered teeth of the front peripheral edge is not equal to the right-handed helix angle of the even-numbered teeth, and the left-handed helix angle of the odd-numbered teeth of the rear peripheral edge is not equal to the left-handed helix angle of the even-numbered teeth.
2. A stagger tooth type milling cutter for machining carbon fiber according to claim 1, characterized in that: The included angles of adjacent end edges are different by 8-12°.
3. A stagger tooth type milling cutter for machining carbon fibers according to claim 2, characterized in that: The number of the end edges is four, the included angles of the end edges are 84-86°, 94-96°, 84-86° and 94-96° respectively, and the sum of the four included angles is 360°.
4. A stagger tooth type milling cutter for machining carbon fibers according to claim 3, characterized in that: The left-right deviation of the two edges of the end edge pair tooth edge is L5=0.18-0.22mm, the up-down deviation is L6=0.7-0.8mm, the short tooth pitch of the end edge is L7=1.9-2mm, the expansion tooth width is L8=0.8-0.9mm, the end tooth front angle is a7=9-12°, the first end tooth relief angle is a8=6-8°, the second end tooth relief angle is a9=20-23°, and the first end tooth relief angle width is L4=0.7-0.8mm.
5. The intermeshing tooth milling cutter for machining carbon fibers according to claim 1, characterized in that: The peripheral edge rear angle of the odd-numbered teeth of the front peripheral edge is not equal to the peripheral edge rear angle of the even-numbered teeth, the peripheral edge rear angle of the odd-numbered teeth of the rear peripheral edge is not equal to the peripheral edge rear angle of the even-numbered teeth, the peripheral edge rear angle of the odd-numbered teeth of the rear peripheral edge is equal to the peripheral edge rear angle of the odd-numbered teeth of the front peripheral edge, and the peripheral edge rear angle of the even-numbered teeth of the rear peripheral edge is equal to the peripheral edge rear angle of the even-numbered teeth of the front peripheral edge.
6. A stagger tooth type milling cutter for machining carbon fibers according to claim 5, characterized in that: The peripheral edge front angle of the odd-numbered teeth of the front peripheral edge and the peripheral edge front angle a3 of the odd-numbered teeth of the rear peripheral edge are 10-12°.
7. A stagger tooth type milling cutter for machining carbon fiber according to claim 5, characterized in that: The peripheral edge first relief angle a41 of the odd-numbered teeth of the front peripheral edge is 11-13°, the peripheral edge second relief angle a51 is 36-38°, the peripheral edge third relief angle a61 is 46-50°, the peripheral edge first relief angle width L21 is 0.6-0.7mm, the peripheral edge second relief angle width L11 is 1.8-1.9mm, and the tooth back width L31 is 2.5-2.6mm; the peripheral edge first relief angle a42 of the even-numbered teeth of the front peripheral edge is 9-11°, the peripheral edge second relief angle a52 is 34-36°, the peripheral edge third relief angle a62 is 43-47°, the peripheral edge first relief angle width L22 is 0.55-0.65mm, the peripheral edge second relief angle width L12 is 1.75-1.85mm, and the tooth back width L32 is 2.4-2.5mm.
8. The intermeshing tooth milling cutter for machining carbon fibers according to claim 1, characterized in that: The left-handed edge length start point D6 of the rear peripheral edge is 6.7-7mm, the right-handed edge length D5 is 7.9-8.1mm, and the butterfly angle is a10=4-6°.
9. The intermeshing tooth milling cutter for machining carbon fibers according to claim 1, characterized in that: A chip pocket is arranged between adjacent end edges, and the angle a13 of the chip pocket is 38-42°.
10. The intermeshing tooth milling cutter for machining carbon fibers according to claim 1, characterized in that: The surface of the tool edge is coated with a diamond coating, and the diamond coating structure adopts a nano-composite alternating structure.