DefinePK

Abstract

For lathe machining, pre-processing of the CAD data in Computer Aided Process Planning (CAPP) is essential since it is the link between CAD and CAM. Thus, cylindrical part model orientation is important to be determined in order to ensure the cutting parameter is correctly setup. Without proper orientation during the pre-processing of the cylindrical part model, further calculation and setup will be erroneous. Therefore, this paper will focus on initial part orientation and its processing in order to generate the delta volume of material to be removed for the lathe machining. By using feature based method, axis from normal vector of the recognized face from the cylindrical part model will be analyzed and configured to the required orientation. The algorithm will later generate the Sub Delta Volume for Finishing (SDVF) and Sub Delta Volume for Roughing (SDVR) of the part model. Consequently, volumes of the SDVF and SDVR will be estimated and compared.