Hiroshi Kamada

Study on electrolytic-abrasive mirror finishing of cylinder workpiece with high shape accuracy.

The electrolytic-abrasive mirror finishing method has been studied for a cylinder workpiece. However it is not sufficient for a mirror surface with a high shape accuracy and supremely small undulation. In order to finish uniformly for the reference surface, the loci of moving abrasives should be completely uniform or the abrased groove should have an appropriate crossing angles. Furthermore, the toolelectrode should have the flexibility then the toolelectrode is able to be used workpiece with various diameter. In this paper, new method and experimental results for a cylinder workpiece has studied, stressing improved shape accuracy by a control of abrasion motion.

Relationlship between Springback and Stacking Characteristics of Paper

Paper handling technology related to sorting, feeding and stacking, has recently become of importance as a result of the development of high-speed, high-resolution printers. Consequently, the clarification of paper processing characteristics is of vital concern. Although there have been numerous reports on metal processing characteristics, very few studies have been carried out on paper processing characteristics such as springback.In the previous paper, a mechanical model for paper behavior was proposed. The present study deals with paper processing characteristics related to stacking.Using the previously proposal mechanical model, an analysis was made of springback in the bending phenomenon for paper and the results were compared with those for metal plates. The results were successfully applied to make clear the correlation between springback and stacking stability in a printer. The main conclusions are as follows:(1) When the strain rate dependency was taken into consideration, close agreement was found between the observed and calculated values of paper in this springback analysis.(2) The stacking stability increased as springback decreased. It was seen that greater paper thickness and the absence of a fixing process results in better stacking characteristics.