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CFRP drilling technology

A kind of technology, the technology to be drilled, applied in the direction of metal processing, etc., can solve the problem of easy generation of burrs at the exit of the hole wall, and achieve the effects of reducing drilling force, improving quality, and reducing roughness

Inactive Publication Date: 2020-11-24
JIANGSU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the defects in the prior art that the hole wall of the CFRP workpiece is torn and the burr is easily generated at the exit of the hole wall, the present invention provides a CFRP drilling process

Method used

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  • CFRP drilling technology

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Embodiment

[0027] This embodiment provides a CFRP drilling process, using the drilling device 1 to drill a CFRP workpiece. The specific steps of the CFRP drilling process are as follows:

[0028] A. Place the CFRP workpiece to be drilled in the clamp 17 of the drilling device 1, and move the clamp 17 and the slide block 14 on the drilling device 1 to determine a suitable drilling position;

[0029] B. Set the feeding speed of the tool 3 and the rotating speed of the main shaft 8 on the drilling device 1;

[0030] C, through the first transducer 7 and the second transducer 15 to make the tool 3 and the clamp 17 generate low-frequency vibrations;

[0031] D. Start the drilling device 1 to start drilling the CFRP workpiece, use the dynamometer to measure the axial force on the CFRP workpiece during the drilling process, and measure the inner wall roughness of the drilled hole on the CFRP workpiece after the drilling is completed , use a microscope to observe the processing quality of the i...

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Abstract

The invention belongs to the technical field of CFRP machining, and particularly relates to a CFRP drilling technology. The drilling technology comprises the following steps that A, a CFRP workpiece to be drilled is placed into a fixture of a drilling device, and a drilling position is determined; B, the feed speed of a cutter and spindle speed on the drilling device are set; C, the cutter and thefixture are vibrated through a first transducer and a second transducer respectively; D, the drilling device is started to start drilling the CFRP workpiece, a measuring cell is used to measure the axial force borne by the CFRP workpiece in the drilling process, after the drilling is completed, the roughness of the inner wall of a drilled hole on the CFRP workpiece is measured, and a microscope is used to observe the machining quality of the inner wall of the drilled hole and the machining quality of an outlet of the drilled hole; and E, measurement data and observation results in step D arerecorded. According to the CFRP drilling technology, by improving an existing drilling device, the fixture is vibrated, the drilling force of the CFRP workpiece is reduced, the wear of the cutter is delayed, the tearing state of the inner wall of the drilled hole is improved, and the quality of the outlet of the drilled hole is improved.

Description

technical field [0001] The invention belongs to the technical field of CFRP processing, and in particular relates to a CFRP drilling process. Background technique [0002] Carbon Fiber Reinforced Polymer (CFRP Carbon Fiber Reinforced Polymer) has the characteristics of light weight and high strength, and is widely used in projects such as bridge reinforcement and maintenance. CFRP is also widely used in military, aviation, sporting goods, racing cars and other fields. Many parts of F1 racing cars are made of CFRP. [0003] However, due to the properties of high strength, high hardness and wear resistance of CFRP, it is difficult to process it. Especially for CFRP openings. The matrix material of CFRP is easy to chemically react with the surface of the tool, resulting in a decrease in the strength of the surface of the tool. What is more serious is that due to the insufficient strength of the ordinary tool, the end of the carbon fiber is often exposed on the hole wall of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B26F1/16B26D7/08B26D7/02
CPCB26D7/02B26D7/086B26F1/16
Inventor 丁凯王许崔方方徐铭洲李奇林
Owner JIANGSU UNIV OF TECH