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Thermal Characteristics and Frequency Analysis of a High Speed Spindle for Small Tapping Center  

Choi, Dae-Bong (한국기계연구원 초정밀 기계시스템실)
Kim, Soo-Tae (창원대학교 기계공학과)
Ro, Seung-Kook (한국기계연구원)
Cho, Hyun-Taek ((주)SKEM)
Publication Information
Journal of the Korean Society of Manufacturing Process Engineers / v.11, no.2, 2012 , pp. 105-111 More about this Journal
Abstract
High speed machining is the core technology that influences the performance of machine tools, and the high speed motor spindle is widely used for the high speed machine tools. The important problem in high speed spindle is to minimize the thermal effect by motor and bearing and frequency effect. This paper presents the thermal characteristic analysis and frequency experiment for a high speed spindle considering the flow rate of cooling oil. A high speed spindle is composed of angular contact ceramic ball bearings, high speed built-in motor, oil cooling jacket and so on. The thermal analyses of high speed spindle need to minimize the thermal effect and maximize the cooling effect and they are carried out under the various cooling conditions. Heat generations of the bearing and the high speed motor are estimated from the theoretical and experimental data. To find out the characteristic of vibration, the high speed spindle is excited in operational range. This result can be applied to the design and manufacture of a high speed tapping spindle.
Keywords
High Speed Tapping Spindle; Cooling Condition; Frequency Analysis; Thermal Displacement; Temperature Distribution;
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  • Reference
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