AFM 측정법에 의한 알루미늄 재질의 초정밀 가공면 특성 연구

Abstract

ABSTRACT

A Study on Characteristics of Ultra-precision Machined Surfaces of Aluminum materials by AFM Measurement

Choi Yu-jeong Advisor : Prof. Kim Jong-Kwan Ph.D. Department of Technology & Home Economics, Chosun University Graduate School of Education

Based on recent advances in processing technology the management of the surface roughness is important because it is closely related in function and quality required as an attribute of the surface features of the cutting process. In this study, paper purposes to evaluate characteristics of machined surface using Atomic Force Microscope in the precision cutting of aluminum(Al 6061) by natural diamond tool. For this study, the machine is installed in the constant temperature and humidity facilities where there is no vibration. Because the external environment is one of the elements which affect the precision in machining and it may actually affect larger than the cause of the machine itself. The length of processing was a maximum of 500km. Then, the results of the experiment were compared.

The results were speculated and the final results were obtained as follows:

1. Change of radius value is slight by 1㎛ low, when edge of cutting tool processes cutting length to 500㎞ and transformation by wear could confirm that do not happen.

2. By using new tool, surface roughness of early cutting processing, poor result was come out by effect of super hard particle. But it was confirmed that roughness was reduced as a result of some measure of cutting.

3. Evaluation of surface peculiarity by AFM 3D provides evaluation of existent surface roughness tester with visible information of three dimensional surface which is more developed. Therefore, this study suggests new method to characteristics of ultra-precision machined surfaces by AFM measurement.

4. This study suggests that future research should consider several factors that influence cutting such as vibration of machines or ambient environment.

Key Words : Surface roughness(표면거칠기), Atomic Force Microscope(AFM: 원자현미경), Ultra-Precision Machining(초정밀 가공)