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A special tool for hole making of fiber-reinforced ceramic matrix composites

A composite material, fiber reinforced technology, applied in the direction of manufacturing tools, stone processing tools, stone processing equipment, etc., can solve the problems of low pass rate, low tool life, burrs, etc., to solve the problem of low processing efficiency, improve processing quality, inhibit The effect of the edge of the knife

Active Publication Date: 2022-02-22
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the actual processing process, cemented carbide drills or PCD drills are often used directly for drilling. The qualified rate of the holes is very low, and the defects such as delamination, burrs, chipping, cracking, and fiber pullout are very serious. At the same time, the tool life is very low, which makes the processing cost of fiber reinforced ceramic matrix composites rise sharply

Method used

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  • A special tool for hole making of fiber-reinforced ceramic matrix composites
  • A special tool for hole making of fiber-reinforced ceramic matrix composites
  • A special tool for hole making of fiber-reinforced ceramic matrix composites

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Embodiment Construction

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0024] The purpose of the present invention is to provide a special tool for making holes in fiber-reinforced ceramic matrix composites, so as to solve the above-mentioned problems in the prior art, improve the processing quality and efficiency of fiber-reinforced ceramic matrix composites, and reduce processing costs.

[0025] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be...

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Abstract

The invention discloses a special cutting tool for hole-making of fiber-reinforced ceramic matrix composite materials, which comprises a connected cutter body and a handle. The main cutting edge is connected with the secondary cutting edge by the transition arc edge, and the transition arc edge is arc-shaped; there is an end edge chip groove between adjacent cutting edges; the secondary cutting edge extends to the second cutting zone, and the second The cutting zone includes a chip splitter, and the chip splitter divides the secondary cutting edge located in the second cutting zone into multiple segments of micro-cutting edges. The special tool for making holes in fiber-reinforced ceramic matrix composites of the present invention is provided with a micro-cutting edge in the second cutting zone, which removes more burrs during the downward feeding process of the tool and improves the processing quality of the hole ; The transition arc edge between the main cutting edge and the auxiliary cutting edge suppresses the chipping of the tool tip during the drilling process and prolongs the service life of the tool.

Description

technical field [0001] The invention relates to the technical field of drilling processing equipment and its peripheral supporting facilities, in particular to a special tool for making holes in fiber-reinforced ceramic matrix composite materials. Background technique [0002] Fiber-reinforced ceramic matrix composites have high specific strength, high specific modulus, high temperature resistance, wear resistance and corrosion resistance, and can meet the functions of load bearing and heat protection at the same time. They are widely used in rocket engine tail nozzles and thermal protection systems of aerospace vehicles And aero-engine hot-end components, etc., have an important position in cutting-edge fields such as aerospace and national defense. Although most fiber-reinforced ceramic matrix composite components are formed in net size at present, for components with pore structure, chamfering and complex shapes, it is difficult to meet the requirements of surface quality...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B28D1/14
CPCB28D1/146
Inventor 赵国龙信连甲李亮赵威杨吟飞郝秀清陈妮何宁
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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