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Machined carbon-fiber-reinforced resin product having end face and production method therefor

一种加工制品、碳纤维的技术，应用在制造工具、金属加工设备、工件等方向，能够解决互相分离、劣化加工精度等问题，达到减少工时、平滑性良好、生产率优秀的效果

Active Publication Date: 2017-02-22
TEIJIN LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the case of using a laser, since the cut portion of the composite material and its surroundings are melted by heating, processing accuracy may be deteriorated, and layers of the composite material may be separated from each other

Method used

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  • Machined carbon-fiber-reinforced resin product having end face and production method therefor
  • Machined carbon-fiber-reinforced resin product having end face and production method therefor
  • Machined carbon-fiber-reinforced resin product having end face and production method therefor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0285] Hereinafter, examples will be described. However, the present invention is not limited thereto.

[0286] 1) Analysis of reinforcing fiber bundles in isotropic substrates

[0287] The isotropic substrate was cut to a size of approximately 100 mm x 100 mm.

[0288] Remove entire fiber bundles from the cut isotropic substrate by using tweezers. Then, the number (I) of the bundles of carbon fiber bundles (A), the length (Li) and the weight (Wi) of the fiber bundles were measured and recorded. The weight (Wk) of the fiber bundle was measured intensively at the final stage when the fiber bundle was too small to be taken out by using tweezers. When measuring the weight, a balance capable of measuring the weight to about 1 / 100 mg is used.

[0289] The critical single fiber number is calculated based on the fiber diameter (D) of the carbon fibers used in the isotropic base material. Then, a carbon fiber bundle (A) having a critical number of single fibers or more is disting...

manufacture example A1

[0306] [Manufacture Example A1] (Manufacture of carbon fiber-reinforced resin molded product)

[0307] As the carbon fiber, carbon fiber “TENAX” (registered trademark) STS40-24KS (7 μm average fiber diameter) cut to an average fiber length of 20 mm (manufactured by TOHO TENAX CO., LTD.) was used. As a matrix, nylon 6 resin A1030 manufactured by UNITIKA LTD. was used. Then, a reinforcing fiber mat was prepared based on the method disclosed in WO 2012 / 105080 document, which contained nylon 6 resin and had a density of 1800 g / m 2 Carbon fiber unit area weight and 1500g / m 2 Weight per unit area of ​​nylon resin in which the carbon fibers are arranged in an isotropic manner in the plane.

[0308] Specifically, as a carbon fiber separating device, a slitter having disc-shaped blades made of cemented carbide and having a blade pitch of 0.5 mm was used. As the cutting device, a rotary cutting machine in which a helical blade made of cemented carbide is arranged on the surface is use...

Embodiment A1

[0315] [Example A1] (cutting with a circular saw)

[0316] As the circular saw blade, a circular saw which is cemented carbide and which has been subjected to a surface treatment of hydrogen-free DLC is used.

[0317] When the carbon fiber-reinforced resin shaped product (the above-mentioned shaped product (I-1)) was moved at a feed speed of 12 m / min to face the blade of the circular saw, the cutting distance of the shaped product (4.5 mm in diameter) in Production Example A1 was under the following conditions: Thickness) part of the end 20mm, thereby obtaining a CFRP processed product with an end surface.

[0318] Specifications of the saw blade: outer diameter φ192×blade width 1.6×CH 20.0×number of blades 120

[0319] The angle of the blade edge: rake angle -15°, back angle 13°

[0320] Number of revolutions: 4700min -1

[0321] Feed speed: 12m / min

[0322] Blade occupancy per unit length: 0.199 (number of blades / outer diameter)

[0323] Cutting speed: 2840m / min

[03...

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Abstract

The objective of the invention is to provide a machined carbon-fiber-reinforced resin product with minimal flashes and almost none of the problems described above that occur on a surface machined by trimming, cutting, or the like, said resin product having an end face with satisfactory surface texture, and excellent surface properties, in particular smoothness. The invention provides a machined carbon-fiber-reinforced resin product containing carbon fibers and a resin and having an end face, wherein the end face has a surface roughness (Rz) in the range of 5 [mu]m to 50 [mu]m inclusive.

Description

technical field [0001] The present invention relates to a carbon fiber reinforced resin processed product. Specifically, the present invention relates to a carbon fiber reinforced resin shaped product containing carbon fiber and resin and having a good end surface, and particularly to a carbon fiber reinforced resin shaped product containing carbon fiber and resin obtained by an end mill Reinforced resin processed product, and its manufacturing method. Background technique [0002] As for a carbon fiber reinforced resin molded article obtained by using a carbon fiber resin composite material (hereinafter, may be referred to as a composite material) in which carbon fibers are contained in a matrix resin, due to its high specific strength and specific stiffness, the carbon fiber reinforced resin molded article is expected to be used for A car that needs to lose weight. In particular, in the case of forming the matrix from a thermoplastic resin, carbon fiber-reinforced resin ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/04B23C3/00B23C5/10B29C70/06B29K307/04
CPCB23C3/00B23C5/10B29C70/06C08J5/04B23C2226/27C08J5/243Y10T428/249945Y10T428/31C08J5/042C08J2300/22C08J5/24B23C2210/0442B23C2210/0485B29C70/14B29C70/42B29K2101/12B29K2105/12B29K2307/04C08J2377/02
Inventor 丰住隆铃木秀平
Owner TEIJIN LTD
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