Effect of manufacturing method on dynamic performance of cams—An experimental study. part I—eccentric cams

Eight eccentric cams, each made by a different manufacturing technique have been tested on a sspecially designed Cam Dynamic Test Fixture (CDTF). Acceleration waveforms have been measured on the follower system and transformed to the frequency domain. These frequency spectra have been averaged over...

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Veröffentlicht in:Mechanism and machine theory 1988, Vol.23 (3), p.191-199
1. Verfasser: Norton, Robert L
Format: Artikel
Sprache:eng
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Zusammenfassung:Eight eccentric cams, each made by a different manufacturing technique have been tested on a sspecially designed Cam Dynamic Test Fixture (CDTF). Acceleration waveforms have been measured on the follower system and transformed to the frequency domain. These frequency spectra have been averaged over selected bandwidths between zero and 6400 Hz and these data subjected to statistical analysis to determine significant differences between manufacturing methods. All of the manufacturing techniques listed show significant differences in at least some of the frequency bandwidths in terms of the total “noise” or r.m.s. error produced in the acceleration waveform. The results indicate that some common manufacturing methods for cams are significantly better than others with respect to fidelity to the theoretical acceleration waveform, and quietness of running. Six cames à double repos ayant quatre profils différents ont été usinées par six techniques différentes. Elles furent testées sur une machine spécialement conçue pour l'essai des cames. L'accélération du poussoir fut mesurée et transformée dans le domaine des fréquences. Des bandes spectrales selectionnées entre zéro et 6400 Hz furent soumises à des traitements statistiques pour déterminer les différences significatives entre différents procédés de fabrication. Les résultats montrent que certains procédés sont nettement supérieurs en ce qui concerne la fidélité de reproduction de la forme théorique de l'onde de l'accélération.
ISSN:0094-114X
1873-3999
DOI:10.1016/0094-114X(88)90104-8