Sistema Automatico Para Extracao de Informacoes de Um Cad, Selecao, Sequenciamento E Execucao de Processos de Torneamento (Automatic System for Extraction of Information from a Computer Aided Design (CAD), Selection, Sequencing, a

摘要

The development and implementation of a system whose goal is the automation of important parts of a CAD-CAM system for turning operations is discussed. These parts are the recognition and extraction of information from CAD systems about the surfaces to be machined, and the selection, sequencing and execution of processes to machine these surfaces. The state of the art in each of these parts is presented. The Numerical Control Basic Language is presented and some functions are proposed in order to give this language more efficiency and flexibility. A high level Language for Numerical Control, with commands for execution of commands common to structured Languages, is detailed. The programs for automating the recognition of the surfaces to be machined, the selection and the sequencing of the machining processes, are also presented. Finally, the CNC system where this work was implemented is presented together with an example of the turning operation of a workpiece, showing the results in each part of the implemented system.