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MANUFACTURING FEATURE RECOGNITION OF PARTS USING DXF FILES

This paper explains manufacturing feature recognition of a rotational component using DXF file. Feature recognition integrates two independent systems: CAD and CAPP. CAD files contain detail geometric information of a part. Different CAD software uses different types of databases to store the part information. There is no common structure of the databases and as such it is difficult, sometimes impossible to interpret or make any necessary change in the databases. In this work geometric information of a rotational part is translated into manufacturing information through a Data Interchange Format (DXF). A feature recognition algorithm is used to recognize different features of the part from its DXF file, where geometric information of the part is stored after respective DXF codes. Finally, using the data extracted from DXF file, each feature of the part is recognized.