Measuring Method of Thermal Displacement for Machine Tools at High-Speed Spindle Rotation.

High-speed machine tools have parts with both stationary and rotating dynamics. While spindle housing, column, and table have stationary dynamics, rotating parts may have both symmetric (i.e., spindle shaft and tool holder) and asymmetric dynamics (i.e., two-fluted end mill) due to uneven geometry in two principal directions. This paper presents a stability model of dynamic milling operations with combined stationary and rotating dynamics. The stationary modes are superposed to two orthogonal directions in rotating frame by considering the time- and speed-dependent, periodic dynamic milling system. The stability of the system is solved in both frequency and semidiscrete time domain. It is shown that the stability pockets differ significantly when the rotating dynamics of the asymmetric tools are considered. The proposed stability model has been experimentally validated in high-speed milling of an aluminum alloy with a two-fluted, asymmetric helical end mill.

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Design Reconsiderations of High Speed Permanent Magnet Hybrid Excitation Motor for Main Spindle Drive in Machine Tools Based on Experimental Results of Prototype Machine

IEEE Transactions on Magnetics ◽

10.1109/tmag.2011.2156400 ◽

2011 ◽

Vol 47 (10) ◽

pp. 4469-4472 ◽

Cited By ~ 10

Author(s):

M. Sridharbabu ◽

T. Kosaka ◽

N. Matsui

Keyword(s):

Permanent Magnet ◽

Machine Tools ◽

High Speed ◽

Experimental Results ◽

Hybrid Excitation ◽

Main Spindle

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New Measuring Method for Motion Accuracy of NC Machine Tools by Link Mechanism. 1st Report. Measurement Equipment and Measuring Experiments.

TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C ◽

10.1299/kikaic.62.320 ◽

1996 ◽

Vol 62 (593) ◽

pp. 320-325 ◽

Cited By ~ 1

Author(s):

Hua QIU ◽

Masanori OHOKA

Keyword(s):

Machine Tools ◽

Measuring Method ◽

Measurement Equipment ◽

Link Mechanism ◽

Nc Machine ◽

Nc Machine Tools

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Study on Displacement Measurement for Induced Strain Field Based on Digital Speckle Pattern Interferometry Method

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.273.510 ◽

2013 ◽

Vol 273 ◽

pp. 510-514

Author(s):

Jing Liu ◽

Hui Zhang ◽

Jun Li ◽

Da Chuan Chen ◽

Yan Kun Tang

Keyword(s):

Strain Field ◽

High Speed ◽

Speckle Pattern ◽

Measuring Method ◽

Full Field ◽

Digital Speckle Pattern Interferometry ◽

Level Measurement ◽

On Line ◽

Interferometry Method ◽

Digital Speckle

Digital Speckle Pattern Interferometry ( DSPI for short ) method has become one of the most practical worthy techniques for speckle measuring methods with the high-speed development of optic-electronical technique, image processing technology and electronic computer technology. There is a lot of advantages about it, such as uncomplicated operation, non-contacting, advanced automatic level, measurement on-line and extensive using. In this thesis, the displacement variation of the induced strain field for driving by piezoelectric ceramics can be measured by using this method. Thus we can come to a conclusion that digital speckle pattern interferometry is a new measuring method for extracting small-signal. It also provides a powerfully theoretical and experimental platform for study of automated, full-field, high-precision and nondestructive measurement.

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