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Aramid fiber drill bit

A drill bit and aramid fiber technology, which is applied in the field of aramid fiber drill bits, can solve the problems affecting the structural performance and service life of aerospace structural parts, casualties of aerospace vehicles, and difficulty in ensuring machining accuracy, so as to improve the cutting speed and cutting Efficiency, reduce processing cost, improve processing quality effect

Pending Publication Date: 2021-10-22
蓝鲸科技(深圳)有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the field of aerospace, when processing structures made of aramid materials, due to the extremely high requirements on the size of the drilled holes, it is not only inefficient to use traditional drilling tools for drilling, but also difficult to guarantee the processing accuracy, and these Quality damage will seriously affect the structural performance and service life of aerospace structural parts. If there is a problem with the connection part, it may cause heavy casualties to aerospace vehicles and personnel

Method used

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  • Aramid fiber drill bit
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Examples

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no. 5 example

[0048] This embodiment discloses a kind of aramid fiber bit, and the feature in this embodiment is the same as that of the fourth embodiment, and wherein the quantity of inner cutting edge 21 is one, the quantity of outer cutting edge 22 is set as two, and the quantity of inner cutting edge 21 The height of the outer cutting edge 22 is higher than that of the outer cutting edge 22, and the two outer cutting edges 22 are located on both sides of the inner cutting edge 21. The inner cutting edge 21 and the two outer cutting edges 22 form a "three-pointed and two-edged" structure.

[0049] Such as Figure 3-4 As shown, the two outer cutting edges 22 are symmetrically distributed on both sides of the inner cutting edge, and the height difference between the inner cutting edge 21 and the two outer cutting edges 22 is the same.

[0050] Such as Figure 3-4 As shown, the handle 1 and the drill pipe 2 are integrally formed.

[0051] Such as Figure 3-4 As shown, the edge of the inn...

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Abstract

The invention relates to the technical field of drilling tools, and discloses an aramid fiber drill bit which comprises: a handle part; a drill rod which is arranged at one end of the handle part; a groove which is formed in the surface of the drill rod; an outer cutting edge which is arranged on the edge of one end, far away from the handle part, of the drill rod, wherein the vertex angle of the outer cutting edge is 55-60 degrees, the relief angle of the outer cutting edge is 10-15 degrees, and the front angle of the outer cutting edge is 15-20 degrees. The outer cutting edge is arranged at one end of the drill rod and plays a cutting role, so that the aramid fiber drill bit is provided, materials can be conveniently and gradually removed from the edge of a hole to the center of the hole, and the AFRP hole machining quality can be improved.

Description

technical field [0001] The invention relates to the technical field of drilling tools, in particular to a drill bit specially used for aramid fiber materials. Background technique [0002] AFRP uses resin as a matrix, and the role of resin in the composite material is to fix the aramid fiber. Compared with aramid fiber, resin material is more brittle, its tensile and compressive properties are worse than that of aramid fiber, and it is not used as the main load-bearing material in the overall composite material. The resin matrix is ​​an isotropic material, and when it forms a composite material with aramid fibers, the composite material is an anisotropic material due to the orderly combination of two materials with different properties. AFRP is generally made of aramid fibers and resin layers for each layer, and the layers of aramid fiber composite materials such as Figure 5 shown. According to the direction of each layer of aramid fibers, AFRP can be divided into unidire...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23B51/00
CPCB23B51/00
Inventor 成勇吕涛程谟力龙重旺黄文亮
Owner 蓝鲸科技(深圳)有限公司