Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/13678
Title: Five-axis tool path generation using piecewise rational bezier motions of a flat-end cutter
Authors: ZHANG WEI
Keywords: Rational Bézier motion, dual quaternion,5-axis tool path generation, gouging and collision avoidance, scallop height, effective cutting shape
Issue Date: 13-Jan-2004
Source: ZHANG WEI (2004-01-13). Five-axis tool path generation using piecewise rational bezier motions of a flat-end cutter. ScholarBank@NUS Repository.
Abstract: This thesis studies the automatic tool path generation for 5-axis machining of sculptured surfaces. A method that uses dual quaternion to represent kinematic motions for the cutter bottom circle of the flat-end cutter is presented. Based on this method, a new approach for a single tool path generation using piecewise rational B??zier cutter motions is described, where key issues such as interference avoidance and surface accuracy requirement are addressed. Then, an iterative process to generate the adjacent tool path has been presented. In this process, the scallop height is calculated according to the intersection between the cutting plane and the two swept surfaces generated by the rational B??zier motion of the cutter bottom circle on the current and the estimated adjacent tool paths. If the scallop height is out of tolerance, the estimated adjacent tool path is modified and scallop height is recalculated. Finally, illustrative examples are presented.
URI: http://scholarbank.nus.edu.sg/handle/10635/13678
Appears in Collections:Master's Theses (Open)

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