Computer Aided Process Planning (CAPP) is considered as an essential component of Computer Integrated manufacturing (CIM) environment and it is an important interface between Computer Aided Design (CAD) and Computer Aided Manufacturing (CAM). The purpose of the CAPP is to determine automatically the use of available resources, including machines, cutting inserts, holders, appropriate machining parameters such as cutting speed, feed rate, depth of cut, and generates automatic sequences of operations and instructions to convert a raw material into a required product, with good surface finish.The contribution of this work in CAPP field is the development of an automatic tool selection system based on STEP_NC and ISO 13399 standards for turning and milling processes. The paper presents the result of study and analysis of principal system functionalities to be considered. The system consist of four principal modules: a Tool database, feature recognition module, cutting tool selection module and a process optimization module. Finally, based on functional analysis results, the paper present the development of tool database and data tool extraction module from ISO 13399 File using oriented object programing.
Computeraided process planning (CAPP) is an essential interface for linking design and manufacturing processes, the purpose of CAPP is to transform a part design specification obtained from CAD system into a sequence of machining operations which can be used by CAM system involving the selection of necessary manufacturing processes in order to transform a designed part into a final part economically and competitively.This paper focus on the extraction of tolerances (GD&T) and their association to the related features embedded into an expert CAPP system.
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Selection of a proper cutting tool plays a significant role in achieving consistent quality and in controlling the overall cost of manufacturing. The present paper describes an approach to build of a computer interface support for automatic and optimized selection of cutting tools conditions for automated machinability assessment of manufacturing features for turning. Data-tools were collected from recent Machining Handbook of world's leading manufacturer of tools Sandvik Coromant. This application works conjointly with a feature automatic recognition system for rotational part. Examples are given to show how this approaches, systematically, lead to an optimum cutting-tool for a specific machined part.</p>
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