Abstract
One of the characteristics of five-axis milling is the tool can be oriented in any direction. It makes the tool orientation could be changed continuously during a free-form machining process. Consequently, the work to predict Cutter Workpiece Engagement (CWE) become more challenging. The existence of tool inclination angle and screw angle influence the profile of cut geometry. In this paper, an improved method to define the lower engagement point (LE-point) is presented. The algorithm was developed by taken into consideration the existence of inclination angle and screw angle. The extended method to calculate grazing point in swept envelope development was utilized to define LE-point. The developed model was successfully implemented to generate CWE data with various combination of tool orientation angle. From the test it was found that inclination angle gives significant effect to the location of LE-point.
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