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Holz als Roh- und Werkstoff

, Volume 63, Issue 3, pp 167–172 | Cite as

The influence of wood fiber direction, feed rate, and cutting width on sound intensity during routing

  • P. Iskra
  • C. Tanaka
Originalarbeiten/Originals

Abstract

This study examines the possibility of using sound intensity to monitor the wood routing process at different machining conditions. Sound intensity is defined as the rate of flow of acoustic energy per unit area in a specified direction. For this study, specimens of Japanese beech (Fagus crenata Blume) were routed on a CNC machine tool equipped with an automatic feed. The effect of wood grain angle on the sound intensity energy generated and surface roughness produced was determined. Maximum sound intensity during routing was generated at an inclination of 135° to the grain. A linear relationship between sound intensity output and workpiece feed rate was recognized. Sound intensity and surface roughness are also strongly correlated, irrespective of feed rate. In contrast, sound intensity more than doubled with doubling of cutting width, whereas surface roughness did not increase. The results suggest that the measurement of sound intensity is a promising method for monitoring surface roughness and determining optimum feed rates.

Keywords

Surface Roughness Feed Rate Acoustic Emission Tool Wear Inclination Angle 

Einfluss der Richtung der Holzfasern, des Vorschubs und der Schnittbreite auf die Schallintensität beim Fräsen

Zusammenfassung

Diese Arbeit untersucht die Möglichkeit, mit Hilfe der Schallintensität den Fräsprozess unter verschiedenen Bedingungen zu überwachen. Hierzu wurden Buchenproben (Fagus crenata Blume) auf einer CNC-Maschine mit automatischer Probenzufuhr gefräst. Der Einfluss des Faserwinkels auf die Intensität der erzeugten Schallenergie und die resultierende Oberflächenrauhigkeit wurden gemessen. Die höchste Schallintensität während des Fräsens entstand bei einer Neigung von 135° zur Faser. Zwischen Schallintensität und Vorschub des Werkstücks zeigte sich ein linearer Zusammenhang. Schallintensität und Oberflächenrauhigkeit sind ebenfalls streng korreliert, und zwar unabhängig vom Vorschub. Demgegenüber ergab sich kein Anstieg der Oberflächenrauhigkeit, wenn die Schallintensitat sich bei Verdoppelung der Schnittbreite ebenfalls verdoppelte. Aufgrund der Ergebnisse kann die Messung der Schallintensität benutzt werden, um die Oberflächenrauhigkeit zu überwachen und den optimalen Vorschub zu bestimmen.

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Copyright information

© Springer-Verlag 2005

Authors and Affiliations

  1. 1.Department of Natural Resources Process Engineering, Faculty of Science and EngineeringShimane UniversityJapan

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