Accession Number : AD0671543

Title :   EFFECT AND CONTROL OF CHATTER VIBRATIONS IN MACHINE TOOL PROCESSES.

Descriptive Note : Scientific rept. no. 5, 1 Sep-30 Nov 67,

Corporate Author : TECHNISCHE HOCHSCHULE AACHEN (WEST GERMANY) LABORATORIUM FUER WERKZEUGMASCHINEN UND BETRIEBSLEHRE

Personal Author(s) : Opitz,Herwart

Report Date : 31 DEC 1967

Pagination or Media Count : 82

Abstract : After examining the systematic errors of frequency response measurements caused by the peaks in the power- and cross power spectra, now in this report the statistical errors due to external noise signals will be analysed. The influence of these external noise signals, which may be fed into the measurement set-up at different input positions, is stated. With help of graphical illustrations the scatter range of the results can be obtained easily. Furthermore a general mathematical procedure is derived; by means of this it is possible, to compute the subfrequency responses of a multiple input linear system. Cutting force measurements in wave on wave cutting operations with the further improved test set up show a strong dependency of the frequency response magnitude on the phase angle between the two contours of the chip. (Author)

Descriptors :   (*MACHINE TOOLS, VIBRATION), (*VIBRATION, POWER SPECTRA), ERRORS, RESONANT FREQUENCY, RESPONSE, MEASUREMENT, NOISE, STOCHASTIC PROCESSES, LINEAR SYSTEMS, CUTTING, MATHEMATICAL PREDICTION, WEST GERMANY, MECHANICAL WAVES, OSCILLATION, MECHANICAL PROPERTIES

Subject Categories : Machinery and Tools
      Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE