Abstract

The field of solid modeling has created numerous techniques for unambiguous computer representations of three-dimensional objects. Its data structures and algorithms have been used in a broad range of applications: Computer-Aided Design and Computer-Aided Manufacturing (CAD/ CAM), robotics, computer vision, computer graphics and visualization, virtual reality, etc. This research paper is used to generate process plan from feature-based modeling, based on an integrated geometric modeling system that supports both feature-based modeling and information storage. Present system is developed only for milling components and limited to selective machining features for prismatic components and further implemented for more machining features to develop algorithms for modeling the components through the input of machining features. As a result, feature information is directly available to downstream activities, and feature extraction is no longer needed. The various systematic steps involved in this approach are study of Design, identification of Features, selection of Processes, Tools and Machines, Machining and Inspection [DFPTMMI]. Machining features generated in the design stage are recognized and stored under the Visual Basic control of CATIA software ActiveX interface. Algorithms are developed for individual features and these algorithms are embedded in Visual Basic forms. This system is discussed and suited for 2.5 Dimensional part approach, however, that can be extended to 3 dimensional prismatic part and complex features machining. Finally a process planning chart has been presented as a model process planning.

Highlights

  • computeraided process planning (CAPP) is usually considered to be part of Computer-Aided Manufacturing (CAM) [1]

  • Algorithms are developed for individual features and these algorithms are embedded in Visual Basic forms

  • Machining features generated in the design stage are recognized and stored under the Visual Basic control of CATIA

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Summary

Introduction

CAPP is usually considered to be part of Computer-Aided Manufacturing (CAM) [1]. this tends to imply that CAM is a stand-alone system. Because of the need to respond quickly to highly variable market demands, the development of computeraided process planning (CAPP) systems is necessary To achieve this computer integrated manufacturing (CIM) system, information about machining component is must. The scientist has given a novel feature finder, which automatically generates a part interpretation in terms of machining features, by utilizing information from a variety of sources such as nominal geometry, tolerances and attributes, and design features [15] They presented system architecture for feature-based modeling which is founded on integration that is obtained through the definition of a common feature library and an intermediate model, which plays the role of communication link between the geometric model and the feature-based model [16]

Process Planning
Feature-Based Modeling Technique a Proposed Approach
Algorithm for through Hole
Algorithm for Blind Hole
Process Plan Generation
Conclusion
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