Transcription properties of asperities in wood surfaces under high-speed friction

抄録

In order to obtain fundamental data related to new wood machining technologies that utilized high-speed friction, this study investigated the characteristics of spruce (Picea sitchensis Carr.) surfaces when friction was applied using metal tools with various microscopic asperities. The results showed that spruce surface profiles smoothen when rubbed by metal tools with fine asperities and that varying characteristics could be imparted depending on the tool surface asperity shape. In addition, the transcription rate that evaluated by roughness parameter of tools and spruce surfaces increased as tool surface rougher when friction was applied parallel and perpendicular to the spruce surface, even though the wood surface became rougher. The amplitude of surface profile in transcribed spruce was different from that in used tool when the combination of the amplitude in wood before friction and metal tool was remarkably different. From the surface roughness results and rubbed surface observation, it was suggested that the asperity shape combination affected the properties transcribed onto the wood surface by high-speed friction.