超微細穴抜きに対する制御・計測システムの開発

概要

論文の詳細を見る
A new ultra-fine piercing in which an SiC fiber of 14 μm diameter was used for a punch had been developed. For the sake of a widespread application of this process, the following should be clarified. They are; (1)discussion concerning about results in various conditions, (2)an applicability to various materials, (3)changes of process parameters and tool wear in continuous process and (4) understanding of piercing mechanism. Therefore process parameters such as punch speed and location to be pierced shoudl be controlled and the process should be conducted automatically. Furthermore the measurement of small piercing force and small punch stroke is necessary in order to monitor the process configuration and understand the pierching mechanism. In this report a control and measurement system applicable to the ultra-fine piercing was developed. A personal computer generalizes the whole system. When data are collected, accuracy, preciseness and reliability were improved under the consideration of characteristics of equipment and those of sensors. Obtained piercing force vs. punch stroke diagrams were sufficiently accurate and reproducible. It was clarified that with increase of an aspect ratio (foil thickness/punch diameter) the maximum piercing force to hardness increases because a material deforms severely. An efficient length of a fiber punch was estimated to be about 150 μm by a compression test of the fiber punch. A fiber punch kept sound even if it was applied repeatedly more than 120 times by the normal stress of 4 GPa. Besides it kept sound if the excess stress of 15 GPa was applied.
社団法人日本機械学会の論文
1999-07-25

超微細穴抜きに対する制御・計測システムの開発

スポンサーリンク

概要

著者

関連論文

スポンサーリンク