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Abstract: The machine tool spindle radial motion error is measured
online under the condition of workpiece being manufactured. The measured
object is cylinder workpiece instead of the reference bar. The profile
error of workpiece is separated by error separation technique to realize
the online measurement of spindle radial motion error. Wavelet packet
algorithm based on self-adapting threshold is used to get rid of the
noise produced when workpiece is manufactured. At the same time, the
measurement system frequency domain characteristic is analyzed from two
aspects, which are harmonic suppression and general frequency domain
feature.
Key words: Error separation technique On-line test Motion
error Wavelet packet algorism Self-adapting threshold
Denoise
CLC No: TH161.5
国家自然科学基金资助项目(50075056).
Received 20010529, received in revised form 20020011030
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