WO2023071697A1 - Hand drill bit for processing laminated member of carbon fiber reinforced resin-based composite material and aluminum alloy - Google Patents

Hand drill bit for processing laminated member of carbon fiber reinforced resin-based composite material and aluminum alloy Download PDF

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Publication number
WO2023071697A1
WO2023071697A1 PCT/CN2022/122632 CN2022122632W WO2023071697A1 WO 2023071697 A1 WO2023071697 A1 WO 2023071697A1 CN 2022122632 W CN2022122632 W CN 2022122632W WO 2023071697 A1 WO2023071697 A1 WO 2023071697A1
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Prior art keywords
cutting edge
main cutting
drill bit
carbon fiber
reinforced resin
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PCT/CN2022/122632
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French (fr)
Chinese (zh)
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黄文亮
王振国
吕涛
程谟力
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蓝鲸科技(深圳)有限公司
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Publication of WO2023071697A1 publication Critical patent/WO2023071697A1/en

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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
    • B23B45/00—Hand-held or like portable drilling machines, e.g. drill guns; Equipment therefor

Definitions

  • the present application relates to the technical field of hole making of laminated components, in particular to a manual drill for processing laminated components of carbon fiber reinforced resin matrix composite materials and aluminum alloys.
  • CFRP Carbon fiber reinforced resin matrix composites
  • Al aluminum alloys
  • CFRP and Al Due to the difference in material properties between CFRP and Al itself, different processing parameters need to be used for hole processing, and hole making equipment such as CNC machine tools or robotic arms can realize variable parameter processing. Facing the processing of CFRP/Al laminated components, compared with CNC machine tools or robotic arms and other hole-making equipment, manual hole-making faces more severe challenges. During the manual drilling process, the processing parameters cannot be automatically adjusted, and the feed The axial force needs to be controlled by the experience of workers, and it is difficult to ensure the stability of the hole-making quality. Moreover, CFRP and aerospace aluminum alloys are typical difficult-to-machine materials.
  • CFRP CFRP
  • the entrance and exit of CFRP are prone to defects such as burrs, delamination, and tearing
  • the exits of aluminum alloys are prone to flanging and burrs.
  • If the CFRP orifice has burrs, tears, delamination and other damage, it will greatly reduce the performance of the component or even lead to the scrapping of the component.
  • If the Al orifice has flanging, burrs and other damage, it will affect the pass rate and increase the deburring. The process will seriously affect the processing efficiency and increase the processing cost.
  • the technical problem to be solved in this application is how to provide a manual drill for processing laminated components of carbon fiber reinforced resin matrix composite materials and aluminum alloys, so as to facilitate hole-making processing of the laminated components.
  • the embodiment of the present application discloses a manual drill for processing laminated components of carbon fiber reinforced resin matrix composite materials and aluminum alloys, including: a shank and a blade connected in sequence, and the blade
  • the part includes a chisel edge, a first main cutting edge, a second main cutting edge, a third main cutting edge and a secondary cutting edge arranged adjacently in sequence.
  • the secondary cutting edge is arranged in a spiral shape, and the length of the chisel edge is about Between 1/30 and 1/15 of the diameter, it is beneficial to ensure the centering ability of the drill bit and reduce the axial force of the drill bit, thereby reducing the deformation and export processing of laminated components of carbon fiber reinforced resin matrix composites and aluminum alloys damage.
  • the length of the chisel edge is less than 1/30 of the drill diameter, its strength will be low, the drilling will be unstable, and it will be prone to chipping. If the length of the chisel edge is greater than 1/15 of the diameter of the drill bit, the axial force of drilling will be too large, resulting in delamination and tear damage at the entrance and exit of the composite material.
  • the present application further sets that the apex angle of the first main cutting edge is 110-150°.
  • a larger first main cutting edge apex angle of 110-150° which is different from the general value, helps the drill Drills easily into the material, making the drilling process less labor-intensive.
  • the present application is further provided that the apex angle of the second main cutting edge is 50-90°.
  • a smaller second main cutting edge apex angle of 50-90° can help reduce the axial force.
  • Inhibit CFRP pore-making damage can significantly improve the quality of pore-making.
  • the present application further sets that the apex angle of the third main cutting edge is 140° to 180°.
  • such a larger apex angle of the third main cutting edge can reduce the aluminum alloy exit burr and further improve the hole-making quality .
  • the present application further provides that the reverse taper of the secondary cutting edge is 0.5/100-1.5/100.
  • the use of such a large amount of reverse taper helps to reduce the friction between the secondary cutting edge and the hole wall, and reduces the generation of cutting heat and tool wear.
  • the present application further sets that the rake angle of the first main cutting edge and the rake angle of the second main cutting edge are both 8° to 15°.
  • the rake angle of the first main cutting edge and the The rake angle of the second main cutting edge ensures its sharpness and can effectively cut fibers.
  • the present application further sets that the relief angle of the first main cutting edge, the relief angle of the second main cutting edge and the relief angle of the third main cutting edge are all 10-12°. Setting such a large front and back angle ensures the sharpness of the cutting edge, which can enhance the ability to cut CFRP fibers.
  • the present application further sets that the helix angle of the secondary cutting edge is 20° to 50°, and the rake angle of the third main cutting edge in the present application is the helix angle, which ensures its sharpness, can effectively cut fibers, and can also Reduce the burr at the aluminum alloy outlet, and through the optimization of setting a larger helix angle, it also makes chip removal smoother.
  • the diameter of the blade is d
  • the present application further provides that the width of the secondary cutting edge is between 1/20 and 1/10 of the diameter d of the drill bit.
  • the width of the auxiliary cutting edge makes the hole wall have a certain supporting effect on the tool, ensuring the stability of the drilling process.
  • the edge portion since the edge portion includes a chisel edge, a first main cutting edge, a second main cutting edge, a third main cutting edge and a secondary cutting edge arranged adjacently in sequence, the edge portion plays a cutting role, and cooperates with each Numerical optimization of the structure.
  • the combination of the above-mentioned structures and parameters is optimized to improve the hole-making effect from various angles.
  • the structural design of the blade ensures the centering ability of the drill and reduces the axis of the drill. At the same time, it ensures its sharpness, can effectively cut off fibers, and can also reduce the burrs at the exit of aluminum alloy.
  • a manual drill bit for processing laminated components of carbon fiber-reinforced resin-based composite materials and aluminum alloys is provided, which is convenient for manual hole processing of laminated components of carbon-fiber-reinforced resin-based composite materials and aluminum alloys, and improves the manual drilling process. hole efficiency and hole quality.
  • Fig. 1 is a structural schematic diagram of a manual drill for processing laminated components of carbon fiber reinforced resin matrix composite materials and aluminum alloys disclosed in this embodiment;
  • Fig. 2 is a top view of a manual drill for processing laminated components of carbon fiber-reinforced resin-based composite materials and aluminum alloys disclosed in this embodiment;
  • Fig. 3 is the enlarged schematic view of the I place of Fig. 1;
  • FIG. 4 is a schematic diagram of the C-C section structure in FIG. 1 .
  • connection should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it can be mechanically or electrically connected; it can be directly connected, or indirectly connected through an intermediary, or it can be the internal communication of two components, which can be wireless or wired connect. Those of ordinary skill in the art can understand the specific meanings of the above terms in this application in specific situations.
  • the embodiment of the present application discloses a manual drill for processing laminated components of carbon fiber reinforced resin matrix composite materials and aluminum alloys, as shown in Figures 1-4, including: a shank 1 and a blade 2 connected in sequence, and the blade
  • the portion 2 includes a chisel edge 21, a first main cutting edge 22, a second main cutting edge 23, a third main cutting edge 24, and a minor cutting edge 25 arranged adjacently in sequence.
  • the minor cutting edge 25 is arranged in a spiral shape, and the chisel edge 21
  • the length b ⁇ is between 1/30 and 1/15 of the drill diameter d.
  • the length b ⁇ of the chisel edge 21 is ground to 1/20d, so that the drill bit can reduce the axial force while ensuring the good centering ability of the drill bit, thereby reducing the carbon fiber reinforced resin matrix composite material and aluminum Alloy laminates deform and export processing damage.
  • the blade portion 2 since the blade portion 2 includes the chisel edge 21, the first major cutting edge 22, the second major cutting edge 23, the third major cutting edge 24, and the minor cutting edge 25 that are adjacently arranged in sequence, the blade portion 2 starts cutting Function, the structural design of the blade ensures the centering ability of the drill bit, reduces the axial force of the drill bit, and at the same time ensures its sharpness, can effectively cut fibers, and can also reduce the aluminum alloy outlet burr.
  • the structural design of the blade ensures the centering ability of the drill bit, reduces the axial force of the drill bit, and at the same time ensures its sharpness, can effectively cut fibers, and can also reduce the aluminum alloy outlet burr.
  • providing a kind of manual drill bit for processing the laminated member of carbon fiber reinforced resin matrix composite material and aluminum alloy it is convenient to carry out manual hole processing to the laminated member of carbon fiber reinforced resin matrix composite material and aluminum alloy, has improved manual Hole making efficiency and hole quality.
  • the apex angle of the first main cutting edge 22 It is 110-150°.
  • the apex angle of the first main cutting edge 22 It is 140°, and the larger first main cutting edge 22 apex angle helps the drill bit to easily penetrate into the material, making the drilling process more labor-saving.
  • the apex angle of the second main cutting edge 23 is It is 50-90°.
  • the apex angle of the second main cutting edge 23 is The smaller apex angle of the second main cutting edge can help reduce the axial force, inhibit the damage of CFRP hole making, and significantly improve the quality of hole making.
  • the apex angle of the third main cutting edge 24 is It is 140-180°. In the specific implementation process, the apex angle of the third main cutting edge 24 is It is 170°, and the larger third main cutting edge 24 apex angle can reduce the burrs at the exit of aluminum alloy and further improve the quality of hole making.
  • the reverse taper amount of the minor cutting edge 25 is 0.5/100-1.5/100.
  • the reverse taper of the minor cutting edge 25 is 1/100, and a larger reverse taper helps to reduce the friction between the minor cutting edge 25 and the hole wall, reducing the generation of cutting heat and tool wear .
  • the rake angle ⁇ 1 of the first main cutting edge 22 and the rake angle ⁇ 2 of the second main cutting edge 23 are both 8-15°.
  • the rake angle ⁇ 1 of the first main cutting edge 22 and the rake angle ⁇ 2 of the second main cutting edge 23 are both 10°. It ensures its sharpness and can effectively cut fibers.
  • the relief angle ⁇ 1 of the first main cutting edge 22, the relief angle ⁇ 2 of the second main cutting edge 23, and the relief angle ⁇ 3 of the third main cutting edge 24 are all 10-12° .
  • the relief angle ⁇ 1 of the first main cutting edge 22, the relief angle ⁇ 2 of the second main cutting edge 23, and the relief angle ⁇ 3 of the third main cutting edge 24 are all 12°.
  • the corner ensures the sharpness of the cutting edge, which can enhance the cutting ability of CFRP fibers.
  • the helix angle ⁇ of the minor cutting edge 25 is 20° to 50°.
  • the rake angle ⁇ 3 of the third main cutting edge 24 is the helix angle. It ensures its sharpness, can effectively cut off fibers, and can also reduce the burrs at the exit of the aluminum alloy. By setting a larger helix angle for optimization, it also makes chip removal smoother.
  • the radial width d 1 of the first main cutting edge 22 is 0.4d, and the radial width d 2 of the second main cutting edge 23 is 0.67d.
  • the width of the secondary cutting edge 25 is between 1/20 and 1/12 of the diameter d of the drill bit.
  • the width of the secondary cutting edge 25 of 1/20d makes the hole wall have a certain supporting effect on the tool, ensuring the stability of the drilling process.
  • the edge portion 2 plays a cutting role.
  • the structural design of the blade ensures the centering ability of the drill bit, reduces the axial force of the drill bit, and at the same time ensures its sharpness, can effectively cut fibers, and can also reduce the aluminum alloy outlet burr.
  • providing a kind of manual drill bit for processing the laminated member of carbon fiber reinforced resin matrix composite material and aluminum alloy it is convenient to carry out manual hole processing to the laminated member of carbon fiber reinforced resin matrix composite material and aluminum alloy, has improved manual Hole making efficiency and hole quality.
  • the embodiment of the present application discloses a manual drill for processing laminated components of carbon fiber reinforced resin matrix composite materials and aluminum alloys, as shown in Figures 1-4, including: a shank 1 and a blade 2 connected in sequence, and the blade
  • the portion 2 includes a chisel edge 21, a first main cutting edge 22, a second main cutting edge 23, a third main cutting edge 24, and a minor cutting edge 25 arranged adjacently in sequence.
  • the minor cutting edge 25 is arranged in a spiral shape, and the chisel edge 21
  • the length b ⁇ is between 1/30 and 1/15 of the drill diameter d.
  • the length b ⁇ of the chisel edge 21 is ground to 1/20d, so that the drill bit can reduce the axial force while ensuring the good centering ability of the drill bit, thereby reducing the carbon fiber reinforced resin matrix composite material and aluminum Alloy laminates deform and export processing damage.
  • the blade portion 2 since the blade portion 2 includes the chisel edge 21, the first major cutting edge 22, the second major cutting edge 23, the third major cutting edge 24, and the minor cutting edge 25 that are adjacently arranged in sequence, the blade portion 2 starts cutting Function, the structural design of the blade ensures the centering ability of the drill bit, reduces the axial force of the drill bit, and at the same time ensures its sharpness, can effectively cut fibers, and can also reduce the aluminum alloy outlet burr.
  • the structural design of the blade ensures the centering ability of the drill bit, reduces the axial force of the drill bit, and at the same time ensures its sharpness, can effectively cut fibers, and can also reduce the aluminum alloy outlet burr.
  • providing a kind of manual drill bit for processing the laminated member of carbon fiber reinforced resin matrix composite material and aluminum alloy it is convenient to carry out manual hole processing to the laminated member of carbon fiber reinforced resin matrix composite material and aluminum alloy, has improved manual Hole making efficiency and hole quality.
  • the apex angle of the first main cutting edge 22 It is 110-150°. In the specific implementation process, the apex angle of the first main cutting edge 22 The angle is 120°, and the larger first main cutting edge 22 apex angle helps the drill bit to easily penetrate into the material, making the drilling process more labor-saving.
  • the apex angle of the second main cutting edge 23 is It is 50-90°.
  • the apex angle of the second main cutting edge 23 is The smaller apex angle of the second main cutting edge can help reduce the axial force, inhibit the damage of CFRP hole making, and significantly improve the quality of hole making.
  • the apex angle of the third main cutting edge 24 is It is 140-180°. In the specific implementation process, the apex angle of the third main cutting edge 24 is The vertex angle of the third main cutting edge is 160°, which can reduce the burrs at the exit of aluminum alloy and further improve the quality of hole making.
  • the reverse taper amount of the minor cutting edge 25 is 0.5/100-1.5/100.
  • the reverse taper of the minor cutting edge 25 is 1/100, and a larger reverse taper helps to reduce the friction between the minor cutting edge 25 and the hole wall, reducing the generation of cutting heat and tool wear .
  • the rake angle ⁇ 1 of the first main cutting edge 22 and the rake angle ⁇ 2 of the second main cutting edge 23 are both 8-15°.
  • the rake angle ⁇ 1 of the first main cutting edge 22 and the rake angle ⁇ 2 of the second main cutting edge 23 are both 14°. It ensures its sharpness and can effectively cut fibers.
  • the relief angle ⁇ 1 of the first main cutting edge 22, the relief angle ⁇ 2 of the second main cutting edge 23, and the relief angle ⁇ 3 of the third main cutting edge 24 are all 10-12° .
  • the relief angle ⁇ 1 of the first main cutting edge 22, the relief angle ⁇ 2 of the second main cutting edge 23, and the relief angle ⁇ 3 of the third main cutting edge 24 are all 12°.
  • the corner ensures the sharpness of the cutting edge, which can enhance the cutting ability of CFRP fibers.
  • the helix angle ⁇ of the minor cutting edge 25 is 20° to 50°.
  • the rake angle ⁇ 3 of the third main cutting edge 24 is the helix angle. It ensures its sharpness, can effectively cut off fibers, and can also reduce the burrs at the exit of the aluminum alloy. By setting a larger helix angle for optimization, it also makes chip removal smoother.
  • the radial width d 1 of the first main cutting edge 22 is 0.4d, and the radial width d 2 of the second main cutting edge 23 is 0.67d.
  • the width of the secondary cutting edge 25 is between 1/20 and 1/12 of the diameter d of the drill bit.
  • the width of the secondary cutting edge 25 of 1/20d makes the hole wall have a certain supporting effect on the tool, ensuring the stability of the drilling process.
  • the edge portion 2 plays a cutting role.
  • the structural design of the blade ensures the centering ability of the drill bit, reduces the axial force of the drill bit, and at the same time ensures its sharpness, can effectively cut fibers, and can also reduce the aluminum alloy outlet burr.
  • providing a kind of manual drill bit for processing the laminated member of carbon fiber reinforced resin matrix composite material and aluminum alloy it is convenient to carry out manual hole processing to the laminated member of carbon fiber reinforced resin matrix composite material and aluminum alloy, has improved manual Hole making efficiency and hole quality.

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  • Mechanical Engineering (AREA)
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Abstract

A hand drill bit for processing a laminated member of a carbon fiber reinforced resin-based composite material and an aluminum alloy, comprising: a shank part and an edge part, connected in sequence, the edge part comprising a transverse edge, a first main cutting edge, a second main cutting edge, a third main cutting edge and an auxiliary cutting edge which are sequentially and adjacently arranged, the auxiliary cutting edge being configured in a spiral shape. The structural design of the edge part ensures the centering capacity of the drill bit, reduces axial force on the drill bit, ensures sharpness of the drill bit, can effectively sever fibers, and can reduce aluminum alloy exit burrs.

Description

一种用于加工碳纤维增强树脂基复合材料和铝合金的叠层构件的手工钻头A manual drill for machining laminated components of carbon fiber reinforced resin matrix composites and aluminum alloys
相关申请的交叉引用Cross References to Related Applications
本申请要求于2021年10月28日提交中国专利局的申请号为202111263013.4、名称为“一种用于加工碳纤维增强树脂基复合材料和铝合金的叠层构件的手工钻头”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。This application requires a Chinese patent application with the application number 202111263013.4 and titled "A manual drill for processing laminated components of carbon fiber-reinforced resin-based composite materials and aluminum alloys" submitted to the China Patent Office on October 28, 2021 priority, the entire contents of which are incorporated by reference into this application.
技术领域technical field
本申请涉及叠层构件制孔技术领域，尤其涉及一种用于加工碳纤维增强树脂基复合材料和铝合金的叠层构件的手工钻头。The present application relates to the technical field of hole making of laminated components, in particular to a manual drill for processing laminated components of carbon fiber reinforced resin matrix composite materials and aluminum alloys.
背景技术Background technique
碳纤维增强树脂基复合材料(CFRP)及铝合金(Al)因其高强轻质的特性广泛应用于航空航天领域。机翼肋板、机身筒段等部件大量使用CFRP/Al叠层构件。由于航空航天领域中设备的零部件尺寸巨大，无法安装进入数控机床，需要在装配现场进行孔加工，此时制孔过程会受到空间的限制。对于一些狭小工位，机械臂等大型自动化制孔设备无法进入，必须需依靠工人手持钻枪进行手工制孔。Carbon fiber reinforced resin matrix composites (CFRP) and aluminum alloys (Al) are widely used in the aerospace field because of their high strength and light weight. A large number of components such as wing ribs and fuselage barrel sections use CFRP/Al laminated components. Due to the huge size of the parts of the equipment in the aerospace field, it cannot be installed into the CNC machine tool, and hole processing needs to be performed on the assembly site. At this time, the hole making process will be limited by space. For some narrow work stations, large-scale automatic hole-making equipment such as mechanical arms cannot enter, and workers must rely on workers to hold drill guns to make holes manually.
由于CFRP与Al本身材料性能的差异，孔加工时需要使用不同的加工参数进行加工，数控机床或机械臂等制孔设备可以实现变参数加工。面对CFRP/Al叠层构件的加工，相较数控机床或机械臂等制孔设备而言，手工制孔面临更为严峻的挑战，手工钻制孔过程中无法自动调整加工参数，且进给轴向力需要依赖工人经验进行控制，难以保证制孔质量的稳定。而且CFRP和航空铝合金均属于典型的难加工材料，CFRP出入口极易出现毛刺、分层、撕裂等缺陷，铝合金出口极易出现翻边、毛刺。若CFRP孔口有毛刺、撕裂、分层等损伤，将会大大地降低构件的性能甚至导致构件报废，若Al孔口有翻边、毛刺等损伤，将会影响合格率，额外增加去毛刺工艺又会严重影响加工效率，增加加工成本。在用普通麻花钻以及当前现有的各种类型钻进行手工制孔时，还会出现钻削费力，制孔效率低等问题。Due to the difference in material properties between CFRP and Al itself, different processing parameters need to be used for hole processing, and hole making equipment such as CNC machine tools or robotic arms can realize variable parameter processing. Facing the processing of CFRP/Al laminated components, compared with CNC machine tools or robotic arms and other hole-making equipment, manual hole-making faces more severe challenges. During the manual drilling process, the processing parameters cannot be automatically adjusted, and the feed The axial force needs to be controlled by the experience of workers, and it is difficult to ensure the stability of the hole-making quality. Moreover, CFRP and aerospace aluminum alloys are typical difficult-to-machine materials. The entrance and exit of CFRP are prone to defects such as burrs, delamination, and tearing, and the exits of aluminum alloys are prone to flanging and burrs. If the CFRP orifice has burrs, tears, delamination and other damage, it will greatly reduce the performance of the component or even lead to the scrapping of the component. If the Al orifice has flanging, burrs and other damage, it will affect the pass rate and increase the deburring. The process will seriously affect the processing efficiency and increase the processing cost. When using ordinary twist drills and current existing various types of drills to make holes manually, there are also problems such as drilling effort and low hole making efficiency.
因此，如何提供一种用于加工碳纤维增强树脂基复合材料和铝合金的叠层构件的手工钻头，以方便对叠层构件进行高质高效制孔加工成为亟待解决的技术问题。Therefore, how to provide a manual drill for processing laminated components of carbon fiber-reinforced resin-based composite materials and aluminum alloys to facilitate high-quality and efficient hole-making processing of laminated components has become an urgent technical problem to be solved.
发明内容Contents of the invention
本申请要解决的技术问题在于如何提供一种用于加工碳纤维增强树脂基复合材料和铝合金的叠层构件的手工钻头，以方便对叠层构件进行制孔加工。The technical problem to be solved in this application is how to provide a manual drill for processing laminated components of carbon fiber reinforced resin matrix composite materials and aluminum alloys, so as to facilitate hole-making processing of the laminated components.
为此，根据第一方面，本申请实施例公开了一种用于加工碳纤维增强树脂基复合材料和铝合金的叠层构件的手工钻头，包括：依次连接的柄部与刃部，所述刃部包括依次相邻设置的横刃、第一主切削刃、第二主切削刃、第三主切削刃与副切削刃，所述副切削刃呈螺旋状设置，所述横刃的长度为钻头直径的1/30至1/15之间，有利于保证钻头的定心能力， 并减小钻头的轴向力，进而减小碳纤维增强树脂基复合材料和铝合金的叠层构件变形和出口加工损伤。如果横刃长度小于钻头直径的1/30会导致其强度低，钻入不稳定，且容易产生崩刃。如果横刃长度大于钻头直径的1/15则会使得钻入轴向力过大，导致复材出入口的分层、撕裂损伤。To this end, according to the first aspect, the embodiment of the present application discloses a manual drill for processing laminated components of carbon fiber reinforced resin matrix composite materials and aluminum alloys, including: a shank and a blade connected in sequence, and the blade The part includes a chisel edge, a first main cutting edge, a second main cutting edge, a third main cutting edge and a secondary cutting edge arranged adjacently in sequence. The secondary cutting edge is arranged in a spiral shape, and the length of the chisel edge is about Between 1/30 and 1/15 of the diameter, it is beneficial to ensure the centering ability of the drill bit and reduce the axial force of the drill bit, thereby reducing the deformation and export processing of laminated components of carbon fiber reinforced resin matrix composites and aluminum alloys damage. If the length of the chisel edge is less than 1/30 of the drill diameter, its strength will be low, the drilling will be unstable, and it will be prone to chipping. If the length of the chisel edge is greater than 1/15 of the diameter of the drill bit, the axial force of drilling will be too large, resulting in delamination and tear damage at the entrance and exit of the composite material.
本申请进一步设置为，所述第一主切削刃的顶角为110～150°，本申请中采用110～150°这样不同于一般数值的较大的第一主切削刃顶角有助于钻头轻松钻入材料，使得钻削过程更为省力。The present application further sets that the apex angle of the first main cutting edge is 110-150°. In this application, a larger first main cutting edge apex angle of 110-150°, which is different from the general value, helps the drill Drills easily into the material, making the drilling process less labor-intensive.
本申请进一步设置为，所述第二主切削刃的顶角为50～90°，本申请中采用50～90°这样较小的第二主切削刃顶角可有助于减小轴向力，抑制CFRP制孔损伤，可明显的提升制孔质量。The present application is further provided that the apex angle of the second main cutting edge is 50-90°. In this application, a smaller second main cutting edge apex angle of 50-90° can help reduce the axial force. , Inhibit CFRP pore-making damage, can significantly improve the quality of pore-making.
本申请进一步设置为，所述第三主切削刃的顶角为140～180°，本申请中采用这样较大的第三主切削刃顶角可减小铝合金出口毛刺，进一步提升制孔质量。The present application further sets that the apex angle of the third main cutting edge is 140° to 180°. In this application, such a larger apex angle of the third main cutting edge can reduce the aluminum alloy exit burr and further improve the hole-making quality .
本申请进一步设置为，所述副切削刃的倒锥量为0.5/100-1.5/100。本申请中采用这样较大的倒锥量有助于减小副切削刃与孔壁之间的摩擦，减少切削热的产生及刀具磨损。The present application further provides that the reverse taper of the secondary cutting edge is 0.5/100-1.5/100. In this application, the use of such a large amount of reverse taper helps to reduce the friction between the secondary cutting edge and the hole wall, and reduces the generation of cutting heat and tool wear.
本申请进一步设置为，所述第一主切削刃的前角与所述第二主切削刃的前角均为8～15°，本申请中通过优化设置专门第一主切削刃的前角与所述第二主切削刃的前角，保证了其锋利性，能有效切断纤维。The present application further sets that the rake angle of the first main cutting edge and the rake angle of the second main cutting edge are both 8° to 15°. In this application, the rake angle of the first main cutting edge and the The rake angle of the second main cutting edge ensures its sharpness and can effectively cut fibers.
本申请进一步设置为，所述第一主切削刃的后角、所述第二主切削刃的后角与所述第三主切削刃的后角均为10～12°，本申请中通过优化设置这样较大的前后角保证了切削刃的锋利性，可加强对CFRP纤维的切断能力。The present application further sets that the relief angle of the first main cutting edge, the relief angle of the second main cutting edge and the relief angle of the third main cutting edge are all 10-12°. Setting such a large front and back angle ensures the sharpness of the cutting edge, which can enhance the ability to cut CFRP fibers.
本申请进一步设置为，所述副切削刃的螺旋角为20～50°，本申请中第三主切削刃的前角即为螺旋角，保证了其锋利性，能有效切断纤维，同时也能减小铝合金出口毛刺，通过设置较大的螺旋角的优化，也使得排屑更加顺畅。The present application further sets that the helix angle of the secondary cutting edge is 20° to 50°, and the rake angle of the third main cutting edge in the present application is the helix angle, which ensures its sharpness, can effectively cut fibers, and can also Reduce the burr at the aluminum alloy outlet, and through the optimization of setting a larger helix angle, it also makes chip removal smoother.
本申请进一步设置为，所述刃部的直径为d，所述刃部的芯厚d 0＝0.25～0.35d。本申请中通过优化设置专门的直径长度比例，可保证钻头整体强度并增大其容屑空间。 The present application further provides that the diameter of the blade is d, and the core thickness of the blade is d 0 =0.25˜0.35d. In this application, by optimizing the special ratio of diameter to length, the overall strength of the drill bit can be ensured and the chip space can be increased.
本申请进一步设置为，所述副切削刃的宽度为钻头直径d的1/20至1/10之间。本申请中通过优化设置专门的直径长度比例，副切削刃宽度使孔壁对刀具有一定的支撑作用，保证钻削过程的稳定。The present application further provides that the width of the secondary cutting edge is between 1/20 and 1/10 of the diameter d of the drill bit. In this application, by optimizing the special ratio of diameter to length, the width of the auxiliary cutting edge makes the hole wall have a certain supporting effect on the tool, ensuring the stability of the drilling process.
本申请具有以下有益效果：由于刃部包括依次相邻设置的横刃、第一主切削刃、第二主切削刃、第三主切削刃与副切削刃，刃部起切削作用，并配合各个结构的数值优化配合，本申请中通过优化设置专门以上结构和参数的配合，从各个角度协同来提高制孔效果；该刃部的结构设计保证了钻头的定心能力，减小了钻头的轴向力，同时保证了其锋利性，能 有效切断纤维，同时也能减小铝合金出口毛刺。从而提供了一种用于加工碳纤维增强树脂基复合材料和铝合金的叠层构件的手工钻头，方便对碳纤维增强树脂基复合材料和铝合金的叠层构件进行手工制孔加工，提升了手工制孔的效率及孔质量。The application has the following beneficial effects: since the edge portion includes a chisel edge, a first main cutting edge, a second main cutting edge, a third main cutting edge and a secondary cutting edge arranged adjacently in sequence, the edge portion plays a cutting role, and cooperates with each Numerical optimization of the structure. In this application, the combination of the above-mentioned structures and parameters is optimized to improve the hole-making effect from various angles. The structural design of the blade ensures the centering ability of the drill and reduces the axis of the drill. At the same time, it ensures its sharpness, can effectively cut off fibers, and can also reduce the burrs at the exit of aluminum alloy. Thereby, a manual drill bit for processing laminated components of carbon fiber-reinforced resin-based composite materials and aluminum alloys is provided, which is convenient for manual hole processing of laminated components of carbon-fiber-reinforced resin-based composite materials and aluminum alloys, and improves the manual drilling process. hole efficiency and hole quality.
附图说明Description of drawings
为了更清楚地说明本申请具体实施方式或现有技术中的技术方案，下面将对具体实施方式或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图是本申请的一些实施方式，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the specific embodiments or prior art. Obviously, the accompanying drawings in the following description The drawings are some implementations of the present application, and those skilled in the art can obtain other drawings based on these drawings without creative work.
图1是本实施例公开的一种用于加工碳纤维增强树脂基复合材料和铝合金的叠层构件的手工钻头的结构示意图；Fig. 1 is a structural schematic diagram of a manual drill for processing laminated components of carbon fiber reinforced resin matrix composite materials and aluminum alloys disclosed in this embodiment;
图2是本实施例公开的一种用于加工碳纤维增强树脂基复合材料和铝合金的叠层构件的手工钻头的俯视图；Fig. 2 is a top view of a manual drill for processing laminated components of carbon fiber-reinforced resin-based composite materials and aluminum alloys disclosed in this embodiment;
图3是图1的I处放大示意图；Fig. 3 is the enlarged schematic view of the I place of Fig. 1;
图4是图1的C-C剖面结构示意图。FIG. 4 is a schematic diagram of the C-C section structure in FIG. 1 .
附图标记：1、柄部；2、刃部；21、横刃；22、第一主切削刃；23、第二主切削刃；24、第三主切削刃；25、副切削刃。Reference signs: 1, shank; 2, blade; 21, chisel edge; 22, first main cutting edge; 23, second main cutting edge; 24, third main cutting edge; 25, minor cutting edge.
具体实施方式Detailed ways
为了使本申请的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本申请进行进一步详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本申请，并不用于限定本申请。In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application.
在本申请的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，还可以是两个元件内部的连通，可以是无线连接，也可以是有线连接。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本申请中的具体含义。In the description of this application, it should be noted that unless otherwise specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it can be mechanically or electrically connected; it can be directly connected, or indirectly connected through an intermediary, or it can be the internal communication of two components, which can be wireless or wired connect. Those of ordinary skill in the art can understand the specific meanings of the above terms in this application in specific situations.
在本申请的描述中，需要说明的是，术语“中心”、“上”、“下”、“左”、“右”、“竖直”、“水平”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制。此外，术语“第一”、“第二”、“第三”仅用于描述目的，而不能理解为指示或暗示相对重要性。In the description of this application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, use a specific orientation construction and operation, therefore should not be construed as limiting the application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and should not be construed as indicating or implying relative importance.
此外，下面所描述的本申请不同实施方式中所涉及的技术特征只要彼此之间未构成冲突就可以相互结合。In addition, the technical features involved in the different embodiments of the present application described below may be combined as long as they do not constitute a conflict with each other.
第一个实施例first embodiment
本申请实施例公开了一种用于加工碳纤维增强树脂基复合材料和铝合金的叠层构件的手工钻头，如图1-4所示，包括：依次连接的柄部1与刃部2，刃部2包括依次相邻设置的横刃21、第一主切削刃22、第二主切削刃23、第三主切削刃24与副切削刃25，副切削刃25呈螺旋状设置，横刃21的长度b Ψ为钻头直径d的1/30至1/15之间。在具体实施过程中，将横刃21长度b Ψ修磨至1/20d，使钻头在保证钻头良好的定心能力的同时，减小轴向力，进而减小碳纤维增强树脂基复合材料和铝合金的叠层构件变形和出口加工损伤。 The embodiment of the present application discloses a manual drill for processing laminated components of carbon fiber reinforced resin matrix composite materials and aluminum alloys, as shown in Figures 1-4, including: a shank 1 and a blade 2 connected in sequence, and the blade The portion 2 includes a chisel edge 21, a first main cutting edge 22, a second main cutting edge 23, a third main cutting edge 24, and a minor cutting edge 25 arranged adjacently in sequence. The minor cutting edge 25 is arranged in a spiral shape, and the chisel edge 21 The length b Ψ is between 1/30 and 1/15 of the drill diameter d. In the specific implementation process, the length b Ψ of the chisel edge 21 is ground to 1/20d, so that the drill bit can reduce the axial force while ensuring the good centering ability of the drill bit, thereby reducing the carbon fiber reinforced resin matrix composite material and aluminum Alloy laminates deform and export processing damage.
需要说明的是，由于刃部2包括依次相邻设置的横刃21、第一主切削刃22、第二主切削刃23、第三主切削刃24与副切削刃25，刃部2起切削作用，该刃部的结构设计保证了钻头的定心能力，减小了钻头的轴向力，同时保证了其锋利性，能有效切断纤维，同时也能减小铝合金出口毛刺。从进而提供了一种用于加工碳纤维增强树脂基复合材料和铝合金的叠层构件的手工钻头，方便对碳纤维增强树脂基复合材料和铝合金的叠层构件进行手工制孔加工，提升了手工制孔的效率及孔质量。It should be noted that since the blade portion 2 includes the chisel edge 21, the first major cutting edge 22, the second major cutting edge 23, the third major cutting edge 24, and the minor cutting edge 25 that are adjacently arranged in sequence, the blade portion 2 starts cutting Function, the structural design of the blade ensures the centering ability of the drill bit, reduces the axial force of the drill bit, and at the same time ensures its sharpness, can effectively cut fibers, and can also reduce the aluminum alloy outlet burr. Thereby providing a kind of manual drill bit for processing the laminated member of carbon fiber reinforced resin matrix composite material and aluminum alloy, it is convenient to carry out manual hole processing to the laminated member of carbon fiber reinforced resin matrix composite material and aluminum alloy, has improved manual Hole making efficiency and hole quality.
如图1和图2所示，第一主切削刃22的顶角
Figure PCTCN2022122632-appb-000001
为110～150°。在具体实施过程中，第一主切削刃22的顶角
Figure PCTCN2022122632-appb-000002
为140°，较大的第一主切削刃22顶角有助于钻头轻松钻入材料，使得钻削过程更为省力。 As shown in Figures 1 and 2, the apex angle of the first main cutting edge 22
Figure PCTCN2022122632-appb-000001
It is 110-150°. In the specific implementation process, the apex angle of the first main cutting edge 22
Figure PCTCN2022122632-appb-000002
It is 140°, and the larger first main cutting edge 22 apex angle helps the drill bit to easily penetrate into the material, making the drilling process more labor-saving.
如图1和图2所示，第二主切削刃23的顶角为
Figure PCTCN2022122632-appb-000003
为50～90°。在具体实施过程中，第二主切削刃23的顶角为
Figure PCTCN2022122632-appb-000004
为50°，较小的第二主切削刃顶角可有助于减小轴向力，抑制CFRP制孔损伤，可明显的提升制孔质量。 As shown in Figures 1 and 2, the apex angle of the second main cutting edge 23 is
Figure PCTCN2022122632-appb-000003
It is 50-90°. In the specific implementation process, the apex angle of the second main cutting edge 23 is
Figure PCTCN2022122632-appb-000004
The smaller apex angle of the second main cutting edge can help reduce the axial force, inhibit the damage of CFRP hole making, and significantly improve the quality of hole making.
如图1和图2所示，第三主切削刃24的顶角为
Figure PCTCN2022122632-appb-000005
为140～180°。在具体实施过程中，第三主切削刃24的顶角为
Figure PCTCN2022122632-appb-000006
为170°，较大的第三主切削刃24顶角可减小铝合金出口毛刺，进一步提升制孔质量。 As shown in Figures 1 and 2, the apex angle of the third main cutting edge 24 is
Figure PCTCN2022122632-appb-000005
It is 140-180°. In the specific implementation process, the apex angle of the third main cutting edge 24 is
Figure PCTCN2022122632-appb-000006
It is 170°, and the larger third main cutting edge 24 apex angle can reduce the burrs at the exit of aluminum alloy and further improve the quality of hole making.
如图1和图2所示，副切削刃25的倒锥量为0.5/100-1.5/100。在具体实施过程中，副切削刃25的倒锥量为1/100，较大的倒锥量有助于减小副切削刃25与孔壁之间的摩擦，减少切削热的产生及刀具磨损。As shown in Fig. 1 and Fig. 2, the reverse taper amount of the minor cutting edge 25 is 0.5/100-1.5/100. In the specific implementation process, the reverse taper of the minor cutting edge 25 is 1/100, and a larger reverse taper helps to reduce the friction between the minor cutting edge 25 and the hole wall, reducing the generation of cutting heat and tool wear .
如图1和图2所示，第一主切削刃22的前角γ 1与第二主切削刃23的前角γ 2均为8～15°。在具体实施过程中，第一主切削刃22的前角γ 1与第二主切削刃23的前角γ 2均为10°。保证了其锋利性，能有效切断纤维。 1 and 2, the rake angle γ1 of the first main cutting edge 22 and the rake angle γ2 of the second main cutting edge 23 are both 8-15°. In a specific implementation process, the rake angle γ1 of the first main cutting edge 22 and the rake angle γ2 of the second main cutting edge 23 are both 10°. It ensures its sharpness and can effectively cut fibers.
如图1和图2所示，第一主切削刃22的后角α 1、第二主切削刃23的后角α 2与第三主切削刃24的后角α 3均为10～12°。在具体实施过程中，第一主切削刃22的后角α 1、第二主切削刃23的后角α 2与第三主切削刃24的后角α 3均为12°，较大的前后角保证了切削刃的锋利性，可加强对CFRP纤维的切断能力。 As shown in Figures 1 and 2, the relief angle α 1 of the first main cutting edge 22, the relief angle α 2 of the second main cutting edge 23, and the relief angle α 3 of the third main cutting edge 24 are all 10-12° . In the specific implementation process, the relief angle α 1 of the first main cutting edge 22, the relief angle α 2 of the second main cutting edge 23, and the relief angle α 3 of the third main cutting edge 24 are all 12°. The corner ensures the sharpness of the cutting edge, which can enhance the cutting ability of CFRP fibers.
如图1和图2所示，副切削刃25的螺旋角β为20～50°。在具体实施过程中，第三主切削刃24前角γ 3即为螺旋角。保证了其锋利性，能有效切断纤维，同时也能减小铝合金出口毛刺，通过设置较大的螺旋角的优化，也使得排屑更加顺畅。 As shown in FIGS. 1 and 2 , the helix angle β of the minor cutting edge 25 is 20° to 50°. In a specific implementation process, the rake angle γ3 of the third main cutting edge 24 is the helix angle. It ensures its sharpness, can effectively cut off fibers, and can also reduce the burrs at the exit of the aluminum alloy. By setting a larger helix angle for optimization, it also makes chip removal smoother.
如图1和图3所示，刃部2的径向宽度为d，刃部2的芯厚d 0＝0.25～0.35d。在具体实施过程中，第一主切削刃22的径向宽度d 1为0.4d，第二主切削刃23的径向宽度d 2为0.67d。在具体实施过程中，由于芯厚d 0＝0.25～0.35d，可保证钻头整体强度并增大其容屑空间。 As shown in FIG. 1 and FIG. 3 , the radial width of the blade portion 2 is d, and the core thickness of the blade portion 2 is d 0 =0.25˜0.35d. In a specific implementation process, the radial width d 1 of the first main cutting edge 22 is 0.4d, and the radial width d 2 of the second main cutting edge 23 is 0.67d. In the specific implementation process, since the core thickness d 0 =0.25-0.35d, the overall strength of the drill bit can be ensured and the chip space can be increased.
如图1所示，副切削刃25的宽度为钻头直径d的1/20至1/12之间。在具体实施过程中，1/20d的副切削刃25宽度使孔壁对刀具有一定的支撑作用，保证钻削过程的稳定。As shown in FIG. 1 , the width of the secondary cutting edge 25 is between 1/20 and 1/12 of the diameter d of the drill bit. In the specific implementation process, the width of the secondary cutting edge 25 of 1/20d makes the hole wall have a certain supporting effect on the tool, ensuring the stability of the drilling process.
工作原理：由于刃部2包括依次相邻设置的横刃21、第一主切削刃22、第二主切削刃23、第三主切削刃24与副切削刃25，刃部2起切削作用，该刃部的结构设计保证了钻头的定心能力，减小了钻头的轴向力，同时保证了其锋利性，能有效切断纤维，同时也能减小铝合金出口毛刺。从进而提供了一种用于加工碳纤维增强树脂基复合材料和铝合金的叠层构件的手工钻头，方便对碳纤维增强树脂基复合材料和铝合金的叠层构件进行手工制孔加工，提升了手工制孔的效率及孔质量。Working principle: Since the edge portion 2 includes a chisel edge 21, a first main cutting edge 22, a second main cutting edge 23, a third main cutting edge 24 and a minor cutting edge 25 arranged adjacently in sequence, the edge portion 2 plays a cutting role. The structural design of the blade ensures the centering ability of the drill bit, reduces the axial force of the drill bit, and at the same time ensures its sharpness, can effectively cut fibers, and can also reduce the aluminum alloy outlet burr. Thereby providing a kind of manual drill bit for processing the laminated member of carbon fiber reinforced resin matrix composite material and aluminum alloy, it is convenient to carry out manual hole processing to the laminated member of carbon fiber reinforced resin matrix composite material and aluminum alloy, has improved manual Hole making efficiency and hole quality.
第二个实施例second embodiment
本申请实施例公开了一种用于加工碳纤维增强树脂基复合材料和铝合金的叠层构件的手工钻头，如图1-4所示，包括：依次连接的柄部1与刃部2，刃部2包括依次相邻设置的横刃21、第一主切削刃22、第二主切削刃23、第三主切削刃24与副切削刃25，副切削刃25呈螺旋状设置，横刃21的长度b Ψ为钻头直径d的1/30至1/15之间。在具体实施过程中，将横刃21长度b Ψ修磨至1/20d，使钻头在保证钻头良好的定心能力的同时，减小轴向力，进而减小碳纤维增强树脂基复合材料和铝合金的叠层构件变形和出口加工损伤。 The embodiment of the present application discloses a manual drill for processing laminated components of carbon fiber reinforced resin matrix composite materials and aluminum alloys, as shown in Figures 1-4, including: a shank 1 and a blade 2 connected in sequence, and the blade The portion 2 includes a chisel edge 21, a first main cutting edge 22, a second main cutting edge 23, a third main cutting edge 24, and a minor cutting edge 25 arranged adjacently in sequence. The minor cutting edge 25 is arranged in a spiral shape, and the chisel edge 21 The length b Ψ is between 1/30 and 1/15 of the drill diameter d. In the specific implementation process, the length b Ψ of the chisel edge 21 is ground to 1/20d, so that the drill bit can reduce the axial force while ensuring the good centering ability of the drill bit, thereby reducing the carbon fiber reinforced resin matrix composite material and aluminum Alloy laminates deform and export processing damage.
需要说明的是，由于刃部2包括依次相邻设置的横刃21、第一主切削刃22、第二主切削刃23、第三主切削刃24与副切削刃25，刃部2起切削作用，该刃部的结构设计保证了钻头的定心能力，减小了钻头的轴向力，同时保证了其锋利性，能有效切断纤维，同时也能减小铝合金出口毛刺。从进而提供了一种用于加工碳纤维增强树脂基复合材料和铝合金的叠层构件的手工钻头，方便对碳纤维增强树脂基复合材料和铝合金的叠层构件进行手工制孔加工，提升了手工制孔的效率及孔质量。It should be noted that since the blade portion 2 includes the chisel edge 21, the first major cutting edge 22, the second major cutting edge 23, the third major cutting edge 24, and the minor cutting edge 25 that are adjacently arranged in sequence, the blade portion 2 starts cutting Function, the structural design of the blade ensures the centering ability of the drill bit, reduces the axial force of the drill bit, and at the same time ensures its sharpness, can effectively cut fibers, and can also reduce the aluminum alloy outlet burr. Thereby providing a kind of manual drill bit for processing the laminated member of carbon fiber reinforced resin matrix composite material and aluminum alloy, it is convenient to carry out manual hole processing to the laminated member of carbon fiber reinforced resin matrix composite material and aluminum alloy, has improved manual Hole making efficiency and hole quality.
如图1和图2所示，第一主切削刃22的顶角
Figure PCTCN2022122632-appb-000007
为110～150°。在具体实施过程中，第一主切削刃22的顶角
Figure PCTCN2022122632-appb-000008
为120°，较大的第一主切削刃22顶角有助于钻头轻松钻入材料，使得钻削过程更为省力。 As shown in Figures 1 and 2, the apex angle of the first main cutting edge 22
Figure PCTCN2022122632-appb-000007
It is 110-150°. In the specific implementation process, the apex angle of the first main cutting edge 22
Figure PCTCN2022122632-appb-000008
The angle is 120°, and the larger first main cutting edge 22 apex angle helps the drill bit to easily penetrate into the material, making the drilling process more labor-saving.
如图1和图2所示，第二主切削刃23的顶角为
Figure PCTCN2022122632-appb-000009
为50～90°。在具体实施过程中，第二主切削刃23的顶角为
Figure PCTCN2022122632-appb-000010
为80°，较小的第二主切削刃顶角可有助于减小轴向力，抑制 CFRP制孔损伤，可明显的提升制孔质量。 As shown in Figures 1 and 2, the apex angle of the second main cutting edge 23 is
Figure PCTCN2022122632-appb-000009
It is 50-90°. In the specific implementation process, the apex angle of the second main cutting edge 23 is
Figure PCTCN2022122632-appb-000010
The smaller apex angle of the second main cutting edge can help reduce the axial force, inhibit the damage of CFRP hole making, and significantly improve the quality of hole making.
如图1和图2所示，第三主切削刃24的顶角为
Figure PCTCN2022122632-appb-000011
为140～180°。在具体实施过程中，第三主切削刃24的顶角为
Figure PCTCN2022122632-appb-000012
为160°，较大的第三主切削刃24顶角可减小铝合金出口毛刺，进一步提升制孔质量。 As shown in Figures 1 and 2, the apex angle of the third main cutting edge 24 is
Figure PCTCN2022122632-appb-000011
It is 140-180°. In the specific implementation process, the apex angle of the third main cutting edge 24 is
Figure PCTCN2022122632-appb-000012
The vertex angle of the third main cutting edge is 160°, which can reduce the burrs at the exit of aluminum alloy and further improve the quality of hole making.
如图1和图2所示，副切削刃25的倒锥量为0.5/100-1.5/100。在具体实施过程中，副切削刃25的倒锥量为1/100，较大的倒锥量有助于减小副切削刃25与孔壁之间的摩擦，减少切削热的产生及刀具磨损。As shown in Fig. 1 and Fig. 2, the reverse taper amount of the minor cutting edge 25 is 0.5/100-1.5/100. In the specific implementation process, the reverse taper of the minor cutting edge 25 is 1/100, and a larger reverse taper helps to reduce the friction between the minor cutting edge 25 and the hole wall, reducing the generation of cutting heat and tool wear .
如图1和图2所示，第一主切削刃22的前角γ 1与第二主切削刃23的前角γ 2均为8～15°。在具体实施过程中，第一主切削刃22的前角γ 1与第二主切削刃23的前角γ 2均为14°。保证了其锋利性，能有效切断纤维。 1 and 2, the rake angle γ1 of the first main cutting edge 22 and the rake angle γ2 of the second main cutting edge 23 are both 8-15°. In a specific implementation process, the rake angle γ1 of the first main cutting edge 22 and the rake angle γ2 of the second main cutting edge 23 are both 14°. It ensures its sharpness and can effectively cut fibers.
如图1和图2所示，第一主切削刃22的后角α 1、第二主切削刃23的后角α 2与第三主切削刃24的后角α 3均为10～12°。在具体实施过程中，第一主切削刃22的后角α 1、第二主切削刃23的后角α 2与第三主切削刃24的后角α 3均为12°，较大的前后角保证了切削刃的锋利性，可加强对CFRP纤维的切断能力。 As shown in Figures 1 and 2, the relief angle α 1 of the first main cutting edge 22, the relief angle α 2 of the second main cutting edge 23, and the relief angle α 3 of the third main cutting edge 24 are all 10-12° . In the specific implementation process, the relief angle α 1 of the first main cutting edge 22, the relief angle α 2 of the second main cutting edge 23, and the relief angle α 3 of the third main cutting edge 24 are all 12°. The corner ensures the sharpness of the cutting edge, which can enhance the cutting ability of CFRP fibers.
如图1和图2所示，副切削刃25的螺旋角β为20～50°。在具体实施过程中，第三主切削刃24前角γ 3即为螺旋角。保证了其锋利性，能有效切断纤维，同时也能减小铝合金出口毛刺，通过设置较大的螺旋角的优化，也使得排屑更加顺畅。 As shown in FIGS. 1 and 2 , the helix angle β of the minor cutting edge 25 is 20° to 50°. In a specific implementation process, the rake angle γ3 of the third main cutting edge 24 is the helix angle. It ensures its sharpness, can effectively cut off fibers, and can also reduce the burrs at the exit of the aluminum alloy. By setting a larger helix angle for optimization, it also makes chip removal smoother.
如图1和图3所示，刃部2的径向宽度为d，刃部2的芯厚d 0＝0.25～0.35d。在具体实施过程中，第一主切削刃22的径向宽度d 1为0.4d，第二主切削刃23的径向宽度d 2为0.67d。在具体实施过程中，由于芯厚d 0＝0.25～0.35d，可保证钻头整体强度并增大其容屑空间。 As shown in FIG. 1 and FIG. 3 , the radial width of the blade portion 2 is d, and the core thickness of the blade portion 2 is d 0 =0.25˜0.35d. In a specific implementation process, the radial width d 1 of the first main cutting edge 22 is 0.4d, and the radial width d 2 of the second main cutting edge 23 is 0.67d. In the specific implementation process, since the core thickness d 0 =0.25-0.35d, the overall strength of the drill bit can be ensured and the chip space can be increased.
如图1所示，副切削刃25的宽度为钻头直径d的1/20至1/12之间。在具体实施过程中，1/20d的副切削刃25宽度使孔壁对刀具有一定的支撑作用，保证钻削过程的稳定。As shown in FIG. 1 , the width of the secondary cutting edge 25 is between 1/20 and 1/12 of the diameter d of the drill bit. In the specific implementation process, the width of the secondary cutting edge 25 of 1/20d makes the hole wall have a certain supporting effect on the tool, ensuring the stability of the drilling process.
工作原理：由于刃部2包括依次相邻设置的横刃21、第一主切削刃22、第二主切削刃23、第三主切削刃24与副切削刃25，刃部2起切削作用，该刃部的结构设计保证了钻头的定心能力，减小了钻头的轴向力，同时保证了其锋利性，能有效切断纤维，同时也能减小铝合金出口毛刺。从进而提供了一种用于加工碳纤维增强树脂基复合材料和铝合金的叠层构件的手工钻头，方便对碳纤维增强树脂基复合材料和铝合金的叠层构件进行手工制孔加工，提升了手工制孔的效率及孔质量。Working principle: Since the edge portion 2 includes a chisel edge 21, a first main cutting edge 22, a second main cutting edge 23, a third main cutting edge 24 and a minor cutting edge 25 arranged adjacently in sequence, the edge portion 2 plays a cutting role. The structural design of the blade ensures the centering ability of the drill bit, reduces the axial force of the drill bit, and at the same time ensures its sharpness, can effectively cut fibers, and can also reduce the aluminum alloy outlet burr. Thereby providing a kind of manual drill bit for processing the laminated member of carbon fiber reinforced resin matrix composite material and aluminum alloy, it is convenient to carry out manual hole processing to the laminated member of carbon fiber reinforced resin matrix composite material and aluminum alloy, has improved manual Hole making efficiency and hole quality.
下表是标准麻花钻与本申请多个实施例的切削效果对比表：The following table is a comparison table of the cutting effects of standard twist drills and multiple embodiments of the present application:
Figure PCTCN2022122632-appb-000013
Figure PCTCN2022122632-appb-000013
显然，上述实施例仅仅是为清楚地说明所作的举例，而并非对实施方式的限定。对于所属领域的普通技术人员来说，在上述说明的基础上还可以做出其它不同形式的变化或变动。这里无需也无法对所有的实施方式予以穷举。而由此所引伸出的显而易见的变化或变动仍处于本申请创造的保护范围之中。Apparently, the above-mentioned embodiments are only examples for clear description, rather than limiting the implementation. For those of ordinary skill in the art, other changes or changes in different forms can be made on the basis of the above description. It is not necessary and impossible to exhaustively list all the implementation manners here. However, the obvious changes or changes derived therefrom are still within the protection scope of the invention of the present application.

Claims (10)

  1. 一种用于加工碳纤维增强树脂基复合材料和铝合金的叠层构件的手工钻头，其特征在于，包括：依次连接的柄部(1)与刃部(2)，所述刃部(2)包括依次相邻设置的横刃(21)、第一主切削刃(22)、第二主切削刃(23)、第三主切削刃(24)与副切削刃(25)，所述副切削刃(25)呈螺旋状设置，所述横刃(21)的长度为钻头直径的1/30至1/15之间。A manual drill for processing laminated components of carbon fiber-reinforced resin-based composite materials and aluminum alloys, characterized in that it includes: a shank (1) and a blade (2) connected in sequence, and the blade (2) It includes a chisel edge (21), a first main cutting edge (22), a second main cutting edge (23), a third main cutting edge (24) and a minor cutting edge (25) arranged adjacently in sequence. The blade (25) is arranged in a helical shape, and the length of the chisel blade (21) is between 1/30 and 1/15 of the diameter of the drill bit.
  2. 根据权利要求1所述的用于加工碳纤维增强树脂基复合材料和铝合金的叠层构件的手工钻头，其特征在于，所述第一主切削刃(22)的顶角为110～150°。The manual drill bit for processing laminated components of carbon fiber reinforced resin matrix composite material and aluminum alloy according to claim 1, characterized in that, the apex angle of the first main cutting edge (22) is 110-150°.
  3. 根据权利要求1所述的用于加工碳纤维增强树脂基复合材料和铝合金的叠层构件的手工钻头，其特征在于，所述第二主切削刃(23)的顶角为50～90°。The manual drill bit for processing laminated components of carbon fiber reinforced resin matrix composite material and aluminum alloy according to claim 1, characterized in that, the apex angle of the second main cutting edge (23) is 50-90°.
  4. 根据权利要求1所述的用于加工碳纤维增强树脂基复合材料和铝合金的叠层构件的手工钻头，其特征在于，所述第三主切削刃(24)的顶角为140～180°。The manual drill bit for processing laminated components of carbon fiber reinforced resin matrix composite material and aluminum alloy according to claim 1, characterized in that, the apex angle of the third main cutting edge (24) is 140-180°.
  5. 根据权利要求1所述的用于加工碳纤维增强树脂基复合材料和铝合金的叠层构件的手工钻头，其特征在于，所述副切削刃(25)的倒锥量为0.5/100-1.5/100。The manual drill bit for processing laminated components of carbon fiber reinforced resin matrix composite materials and aluminum alloys according to claim 1, characterized in that, the reverse taper of the secondary cutting edge (25) is 0.5/100-1.5/ 100.
  6. 根据权利要求1-4任意一项所述的用于加工碳纤维增强树脂基复合材料和铝合金的叠层构件的手工钻头，其特征在于，所述第一主切削刃(22)的前角与所述第二主切削刃(23)的前角均为8～15°。The manual drill bit for processing laminated components of carbon fiber reinforced resin matrix composite materials and aluminum alloys according to any one of claims 1-4, characterized in that, the rake angle of the first main cutting edge (22) is the same as The rake angles of the second main cutting edge (23) are all 8-15°.
  7. 根据权利要求1-4任意一项所述的用于加工碳纤维增强树脂基复合材料和铝合金的叠层构件的手工钻头，其特征在于，所述第一主切削刃(22)的后角、所述第二主切削刃(23)的后角与所述第三主切削刃(24)的后角均为10～12°。The manual drill bit for processing laminated components of carbon fiber reinforced resin matrix composite materials and aluminum alloys according to any one of claims 1-4, characterized in that, the relief angle of the first main cutting edge (22), The relief angle of the second main cutting edge (23) and the relief angle of the third main cutting edge (24) are both 10-12°.
  8. 根据权利要求1所述的用于加工碳纤维增强树脂基复合材料和铝合金的叠层构件的手工钻头，其特征在于，所述副切削刃(25)的螺旋角为20～50°。The manual drill bit for processing laminated components of carbon fiber reinforced resin matrix composite material and aluminum alloy according to claim 1, characterized in that, the helix angle of the secondary cutting edge (25) is 20° to 50°.
  9. 根据权利要求1所述的用于加工碳纤维增强树脂基复合材料和铝合金的叠层构件的手工钻头，其特征在于，所述刃部(2)的直径为d，所述刃部(2)的芯厚d 0大小为0.25～0.35d。 The manual drill bit for processing laminated components of carbon fiber reinforced resin matrix composite materials and aluminum alloys according to claim 1, characterized in that, the diameter of the blade (2) is d, and the diameter of the blade (2) The core thickness d 0 size is 0.25 ~ 0.35d.
  10. 根据权利要求1或5或8所述的用于加工碳纤维增强树脂基复合材料和铝合金的叠层构件的手工钻头，其特征在于，所述副切削刃(25)的宽度为钻头直径的1/20至1/10之间。According to claim 1, 5 or 8, the manual drill bit for processing laminated components of carbon fiber reinforced resin matrix composite material and aluminum alloy, it is characterized in that the width of the secondary cutting edge (25) is 1 of the diameter of the drill bit Between /20 and 1/10.
PCT/CN2022/122632 2021-10-28 2022-09-29 Hand drill bit for processing laminated member of carbon fiber reinforced resin-based composite material and aluminum alloy WO2023071697A1 (en)

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CN113798559A (en) * 2021-10-28 2021-12-17 蓝鲸科技(深圳)有限公司 Manual drill bit for processing laminated member of carbon fiber reinforced resin matrix composite and aluminum alloy
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