非接触 3-D ディジタイジングシステムを基にした金型生産加工システムの開発(第1報) : 階層型ディジタイジングデータ処理について

概要

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The purpose of this study is to develop a flexible machining system based on non-contact digitizing data of a master model such as a die model. This paper presents a measurement using a hierarchical method to machine a master model shape efficiently, and also the procedure of measuring and the data structure of a master model shape. In general, a master model consists of some surface elements. Each tool path can be created efficiently if it is possible to identify these elements. In order to separate surface elements from the data to be measured, a character line should be used. The character line exists on a boundary between surface elements and can be detected by hierarchical measurement. A measurement is performed in each layer level and the measuring pitch is gradually halved within the boundary of the surface elements. There are 2 types of data to define a measured master model shape. One is a lattice patch data which constructs the model shape in X-Y space, and the other is a patch group data which constitutes the surface element. The measured shape is represented by the patch with a quad tree data structure and a patch group data is a set of patches.
公益社団法人精密工学会の論文
1991-08-05