CN111113554A - Air suction type drill bit for hole making of carbon fiber composite material - Google Patents

Air suction type drill bit for hole making of carbon fiber composite material Download PDF

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Publication number
CN111113554A
CN111113554A CN202010006894.0A CN202010006894A CN111113554A CN 111113554 A CN111113554 A CN 111113554A CN 202010006894 A CN202010006894 A CN 202010006894A CN 111113554 A CN111113554 A CN 111113554A
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CN
China
Prior art keywords
drill bit
blade
micro
section
cutting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010006894.0A
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Chinese (zh)
Inventor
宁海峰
郑华林
袁信满
赵清泉
蒙玉培
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Southwest Petroleum University
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Southwest Petroleum University
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Filing date
Publication date
Application filed by Southwest Petroleum University filed Critical Southwest Petroleum University
Priority to CN202010006894.0A priority Critical patent/CN111113554A/en
Publication of CN111113554A publication Critical patent/CN111113554A/en
Pending legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B26HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26FPERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/16Perforating by tool or tools of the drill type
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B26HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26DCUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/18Means for removing cut-out material or waste
    • B26D7/1845Means for removing cut-out material or waste by non mechanical means
    • B26D7/1863Means for removing cut-out material or waste by non mechanical means by suction
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Drilling And Boring (AREA)

Abstract

The invention provides an air suction type drill bit for drilling a carbon fiber composite material, which comprises a blade section, a transition section and a cutter handle which are sequentially connected; the drill bit is provided with the air suction cavity, so that the generation of CFRP scraps can be reduced, CFRP waste materials are automatically collected by utilizing negative pressure, the recovery rate of the waste materials is improved, the hole making efficiency is increased, and the energy is saved; the surface of the blade section is divided into a plurality of trapezoidal micro-cutting units by the front chip groove and the rear chip groove, and the carbon fiber burrs are cut and removed by the micro-cutting main cutting edge and the micro-cutting auxiliary cutting edge on the trapezoidal micro-cutting units, so that the quality of the hole wall is improved.

Description

Air suction type drill bit for hole making of carbon fiber composite material
Technical Field
The invention relates to a drill bit for drilling carbon fiber composite materials, in particular to an air suction type drill bit for drilling carbon fiber reinforced composite materials.
Background
Carbon fiber reinforced Composites (CFRP) are widely used in the aerospace industry with their high specific strength and modulus of elasticity, and are in great demand in the market.
After the CFRP is cured, a large number of holes must be machined in the material for assembly. Because the carbon fiber and the matrix have great performance difference, the anisotropy and the interlayer strength of the CFRP material are low, and the CFRP is easy to cause the defects of layering, burrs, tearing and the like in the punching process. Most of the holes are processed by the twist drill, a large amount of fiber scraps are generated by the method, the scraps generated by CFRP cutting can be changed into dust particles, the size distribution of the particle size is concentrated in the range of 0.25-1 mu m, and the dust particles with the size can easily reach the lung of a human body and can cause harm to the health of workers. In recent years, with the increase of the usage amount of CFRP, research on recycling of CFRP waste has been advanced internationally, and both "Energy importance and Environmental analysis of mechanical recycling of carbon fiber composite" published by Jack Howarth et al and "Environmental and chemical practice of mechanical recycling of carbon fiber reinforced polymers and composite with Environmental distribution routes" published by Li X et al analyze the economical and Environmental friendliness of CFRP waste recycling, increase in the recovery rate of carbon fiber can reduce the production cost, and recycling of CFRP is also developing from experimental research to industrial scale, and it has important significance to collect as much fiber chips as possible in CFRP processing.
A cutter is one of main factors influencing CFRP processing, and scholars at home and abroad make a great deal of research on the structure of the cutter, for example, the application number of the multi-step multi-edge gradually-changed micro-tooth cutter for carbon fiber composite material hole making invented by the university of general theory of cattle and bin and the like is as follows: 201710638289.3, it relates to a multi-step multi-edge gradual change micro-tooth cutter used for carbon fiber composite material hole making, which comprises a straight edge drilling area, a hole expanding area, a trimming area and a cutter handle, wherein during drilling, the CFRP is firstly drilled, then the hole expanding is carried out, and finally the hole wall is trimmed, thus improving the efficiency and quality of hole making to a certain extent. The invention relates to a suction type drill bit for CFRP drilling processing with replaceable blades, which is invented by the Wang Yi Wen of Harbin theory university, and has the application number: 201811041486.8 the blade of the drill can be changed to reduce the processing cost, and the drill is provided with a suction channel to effectively recycle the cutting chips, reduce the pollution of the cutting chips to the environment and improve the processing quality. However, the two cutters cut the CFRP in the hole into chips, the generation of the CFRP chips is not reduced, and certain limitation is provided for improving the hole-making efficiency and quality.
Therefore, there is a need for improvement of the existing CFRP tool, which can reduce the generation of CFRP chips and automatically recycle the waste material during the CFRP drilling process, thereby fundamentally improving the CFRP processing quality, the processing efficiency and the recovery rate of CFRP waste material.
Disclosure of Invention
In order to achieve the purposes of improving the processing quality and the processing efficiency of CFRP, reducing the generation of CFRP scraps and increasing the recovery rate of CFRP waste materials, the invention adopts the following technical scheme:
an air suction type drill bit for drilling carbon fiber composite materials comprises a blade section, a transition section and a cutter handle which are sequentially connected; the lower end of the blade section is provided with a plurality of cutter teeth, and the cutter teeth are provided with a cutter tooth main blade and a cutter tooth auxiliary blade; the surface of the blade section is provided with a trapezoidal micro-cutting unit, a front chip groove and a rear chip groove; the trapezoidal micro-cutting unit is provided with a micro-cutting main cutting edge and a micro-cutting auxiliary cutting edge; the blade section, the transition section and the inside of the knife handle are all provided with air suction cavities.
The outer diameter of the lower end of the transition section is the same as that of the blade section, and the outer diameter of the upper end of the transition section is the same as that of the cutter handle.
The main cutting edge of the knife tooth on the knife tooth is arc-shaped, and the auxiliary cutting edge of the knife tooth on the knife tooth is parabolic.
The drill bit material is diamond, alloy or ceramic material.
The number of the cutter teeth at the lower end of the cutter edge section is 5-20.
The length of the blade section is 3-18 cm, the length of the transition section is 0.5-5 cm, and the length of the handle is 5-30 cm.
The invention designs an air suction type drill bit for making holes in carbon fiber composite materials, which has the following beneficial effects: the drill comprises a blade section, a transition section and a cutter handle, the drill is provided with a suction cavity, so that the generation of CFRP scraps can be reduced, the scraps and massive scraps are automatically collected by utilizing negative pressure, the recovery rate of CFRP waste materials is improved, the hole making efficiency is increased, and the energy is saved; the surface of the blade section is divided into a plurality of trapezoidal micro-cutting units by the front chip groove and the rear chip groove, and the carbon fiber burrs are cut and removed by the micro-cutting main cutting edge and the micro-cutting auxiliary cutting edge on the trapezoidal micro-cutting units, so that the quality of the hole wall is improved.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is an enlarged view of a portion a in fig. 1.
Fig. 3 is a top view of the present invention.
FIG. 4 is a schematic view of a fiber reinforced composite process.
In the figure: the machining tool comprises a tool edge section A, a transition section B, a tool handle C, tool teeth 1, a tool tooth main cutting edge 2, a tool tooth auxiliary cutting edge 3, a rear chip groove 4, a front chip groove 5, a trapezoidal micro-cutting unit 6, a micro-cutting auxiliary cutting edge 7, a micro-cutting main cutting edge 8, a gas suction cavity 9 and a machined workpiece 10.
Detailed Description
The invention will be further explained with reference to the drawings.
Example (b):
as shown in figures 1-2, the air suction type drill bit for drilling the carbon fiber composite material comprises a cutting edge section A, a transition section B and a cutter handle C which are sequentially connected; the lower end of the blade section A is provided with a plurality of cutter teeth 1, and the cutter teeth 1 are provided with a cutter tooth main blade 2 and a cutter tooth auxiliary blade 3; the surface of the blade section A is provided with a trapezoidal micro-cutting unit 6, a front chip groove 5 and a rear chip groove 4; the trapezoidal micro-cutting unit 6 is provided with a micro-cutting main cutting edge 8 and a micro-cutting auxiliary cutting edge 7; the cutting edge section A, the transition section B and the knife handle C are all internally provided with a suction cavity 9.
As shown in fig. 1, the outer diameter of the front end of the transition section B is the same as that of the blade section a, and the outer diameter of the rear end is the same as that of the shank C.
As shown in fig. 1 to 3, the tooth main cutting edge 2 of the tooth 1 is arc-shaped, and the tooth sub-cutting edge 3 of the tooth 1 is parabolic.
As shown in FIGS. 1 to 3, the cutting tool material may be diamond, alloy or ceramic material.
As shown in FIGS. 1 to 2, the number of the cutter teeth 1 at the lower end of the blade section A is 5 to 20.
As shown in FIG. 1, the length of the blade section A is 3-18 cm, the length of the transition section B is 0.5-5 cm, and the length of the handle C is 5-30 cm.
As shown in fig. 4, the air suction type drill for making holes in carbon fiber composite material provided by the invention is used for processing CFRP at a rotating speed r and a feeding speed v, and since the drill is provided with the air suction cavity 9, the CFRP on the holes cannot be completely broken into chips to form blocky chips; the air suction cavity 9 is communicated with the outside, CFRP scraps and blocky cuttings in the machining process are automatically collected to the cuttings absorption device through the air suction cavity 9, the trapezoidal micro-cutting unit 6 on the cutting edge section A is used for cutting and removing carbon fiber burrs, and the quality of hole walls is improved.
Claim that: the present disclosure is intended to better explain the claims rather than to limit the scope of the claims, which are to be accorded the full scope permitted by the language of the specification, and it is intended that all such modifications as fall within the scope of the claims, as would be understood by those skilled in the art, without necessarily requiring inventive faculty, and equivalents thereof, be resorted to by the skilled artisan having reference to the description.

Claims (6)

1. The utility model provides a formula of breathing in drill bit for carbon-fibre composite system hole which characterized in that: comprises a blade section (A), a transition section (B) and a knife handle (C) which are connected in sequence; the lower end of the blade section (A) is provided with a plurality of blade teeth (1), and the blade teeth (1) are provided with a blade tooth main blade (2) and a blade tooth auxiliary blade (3); the surface of the blade section (A) is provided with a trapezoidal micro-cutting unit (6), a front chip groove (5) and a rear chip groove (4); the trapezoidal micro-cutting unit (6) is provided with a micro-cutting main cutting edge (8) and a micro-cutting auxiliary cutting edge (7); the interior of the blade section (A), the transition section (B) and the handle (C) is provided with a suction cavity (9).
2. The drill bit of claim 1, wherein: the outer diameter of the lower end of the transition section (B) is the same as that of the blade section (A), and the outer diameter of the upper end of the transition section (B) is the same as that of the cutter handle (C).
3. The drill bit of claim 1, wherein: the knife tooth main cutting edge (2) on the knife tooth (1) is arc-shaped, and the knife tooth auxiliary cutting edge (3) on the knife tooth (1) is parabolic.
4. The drill bit of claim 1, wherein: the drill bit material is diamond, alloy or ceramic material.
5. The drill bit of claim 1, wherein: the number of the cutter teeth (1) at the lower end of the cutter edge section (A) is 5-20.
6. The drill bit of claim 1, wherein: the length of the blade section (A) is 3-18 cm, the length of the transition section (B) is 0.5-5 cm, and the length of the handle (C) is 5-30 cm.
CN202010006894.0A 2020-01-03 2020-01-03 Air suction type drill bit for hole making of carbon fiber composite material Pending CN111113554A (en)

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Application Number Priority Date Filing Date Title
CN202010006894.0A CN111113554A (en) 2020-01-03 2020-01-03 Air suction type drill bit for hole making of carbon fiber composite material

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111136722A (en) * 2020-01-03 2020-05-12 西南石油大学 Cutter and method for drilling carbon fiber composite material

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2150031Y (en) * 1993-04-16 1993-12-22 张仕明 Hollow drill-bit
FR3021570A1 (en) * 2014-05-28 2015-12-04 Diamoutils DRILLING TOOL
CN106794597A (en) * 2015-02-13 2017-05-31 株式会社宫永 Dust suction drill bit and cleaner unit
CN107378009A (en) * 2017-08-01 2017-11-24 大连理工大学 A kind of micro- serrated knife tool of multi-ladder multiple-cutting-edge gradual change for carbon fibre composite drilling
CN110799316A (en) * 2017-06-27 2020-02-14 喜利得股份公司 Drill bit for working rock by drilling

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2150031Y (en) * 1993-04-16 1993-12-22 张仕明 Hollow drill-bit
FR3021570A1 (en) * 2014-05-28 2015-12-04 Diamoutils DRILLING TOOL
CN106794597A (en) * 2015-02-13 2017-05-31 株式会社宫永 Dust suction drill bit and cleaner unit
CN110799316A (en) * 2017-06-27 2020-02-14 喜利得股份公司 Drill bit for working rock by drilling
CN107378009A (en) * 2017-08-01 2017-11-24 大连理工大学 A kind of micro- serrated knife tool of multi-ladder multiple-cutting-edge gradual change for carbon fibre composite drilling

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111136722A (en) * 2020-01-03 2020-05-12 西南石油大学 Cutter and method for drilling carbon fiber composite material

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Application publication date: 20200508