Effects of Diameter, Rolling Type, and Setting condition of the Roller Bar upon the Cutting Phenomena in Orthogonal Cutting of Veneer with a Roller Bar (III) On Variations of Cutting Phenomena

摘要

In the veneer cutting process, compression and restraint caused by a pressure bar play an important role, but few studies have dealt with the effects of them on the frictional coefficient on the tool rake-face. Therefore, the main purpose of this report is to obtain quantitative information on these aspects. In this study, the roller bars with various diameters (D) and various rolling types were prepared to vary the depth (rt) of restraint caused between the face of the roller bar and the tool rake-face, the acting area of restraint, and the degree of adhesion caused between the face of the roller bar and the tight side of the veneer. Before cutting, the test specimens were preheated in water at about 95℃ for 4 hours. Tenmillimeter-thick veneer of white seraya were cut with five rolling types of the roller bars, the cutting phenomena were observated and estimated. Based on these results, variations of the cutting phenomena under various experimental conditions were clarified, and characteristics of the veneer cutting with a roller bar were discussed.