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http://dx.doi.org/10.14775/ksmpe.2021.20.07.015

Analysis of Environmental Factors Affecting the Machining Accuracy  

Kim, Young Bok (Intelligent Optical Module Research Center, KOPTI.)
Lee, Wee Sam (Intelligent Optical Module Research Center, KOPTI.)
Park, June (Intelligent Optical Module Research Center, KOPTI.)
Hwang, Yeon (Intelligent Optical Module Research Center, KOPTI.)
Lee, June Key (Department of Materials & Engineering, Chonnam National UNIV.)
Publication Information
Journal of the Korean Society of Manufacturing Process Engineers / v.20, no.7, 2021 , pp. 15-24 More about this Journal
Abstract
In this paper, to analyze the types of surface morphology error according to factors that cause machining error, the experiments were conducted in the ultra-precision diamond machine using a diamond tool. The factors causing machining error were classified into the pressure variation of compressed air, external shock, tool errors, machining conditions (rotational speed and feed rate), tool wear, and vibration. The pressure variation of compressed air causes a form accuracy error with waviness. An external shock causes a ring-shaped surface defect. The installed diamond tool for machining often has height error, feed-direction position error, and radius size error. The types of form accuracy error according to the tool's errors were analyzed by CAD simulation. The surface roughness is dependent on the tool radius, rotational speed, and feed rate. It was confirmed that the surface roughness was significantly affected by tool wear and vibration, and the surface roughness of Rz 0.0105 ㎛ was achieved.
Keywords
Ultra-precision Diamond Machining; Pressure Strain; Vibration; Diamond Tool; Form Accuracy; Surface Roughness;
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