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http://dx.doi.org/10.7735/ksmte.2013.22.4.747

Development and Evaluation of Ultra-precision Desktop NC Turning Machine  

Ro, Seung-Kook (Korea Institute of Machinery and Materials)
Park, Jong-Kweon (Korea Institute of Machinery and Materials)
Park, Hyun-Duk (Manix Co., Ltd.)
Kim, Yang-Keun (Manix Co., Ltd.)
Publication Information
Journal of the Korean Society of Manufacturing Technology Engineers / v.22, no.4, 2013 , pp. 747-754 More about this Journal
Abstract
This study introduces a recently designed desktop-sized NC turning system and its components. This machine is designed for the ultra-precise turning of parts with a diameter of 0.5-20 mm with minimum space usage for the machine. This study aims to achieve submicron-level accuracy of movements and good rigidity of the machine for precision machining using the desktop-sized machine. The components such as the main machine structure, air bearing servo spindle, and XZ stage with needle roller guides are designed, and the designed machine is built with a PC-based CNC controller. Its static and dynamic stiffness performances and positioning resolutions are tested. Through machining tests with single-crystal diamond tools, a form error less than $0.8{\mu}m$ and surface roughness (Ra) of $0.03{\mu}m$ for workpieces are obtained.
Keywords
Micro turning; Desktop NC lathe; Air bearing serve spindle; Needle roller guides; Workpiece chuck with shape memory alloy; Microfactory; Static and dynamic stiffness evaluation;
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  • Reference
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