Studies on the Development of Tea-Plucking Machine (Part 4) Analysis of Friction Factor in Cutting Action

Yoshinori GEJIMA; Yoshiichi OKADA; Masateru NAGATA; Katsumi ISHIKAWA

doi:10.11357/jsam1937.55.6_13

Studies on the Development of Tea-Plucking Machine (Part 4)

Analysis of Friction Factor in Cutting Action

Yoshinori GEJIMA, Yoshiichi OKADA, Masateru NAGATA, Katsumi ISHIKAWA

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Keywords: cutting action, friction factor, lead angle, angle of deflection, friction coefficient, diameter of plucking roll

JOURNAL FREE ACCESS

1993 Volume 55 Issue 6 Pages 13-21

DOI https://doi.org/10.11357/jsam1937.55.6_13

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Abstract

The plucking roll system was designed to solve the cutting problem of tea shoots, and the theoretical analysis of the friction factor was made to investigate the main cause in these factors. The friction coefficient between the material of plucking roll and tea stem was 0.58-0.68, which was obtained by using the experimental apparatus based on the pin-disk method. The maximum diameter of plucking roll which will protect the tea stem from cutting was assumed to be about 10mm.

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