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5-Axis Control Machining with Top and Side Cutting Edges of Ball End Mill

Y.Takeuchi, M.Nagasaka and K.Morishige

Jounal of Advanced Automation Technology, Vol.8, No.1 (1996) 30-36

5-axis control machining is usually carried out by use of either the top cutting edge or side cutting edge of a tool. The spherical cutting edge of a ball end mill as a top cut allows almost any kind of shape to be formed. However, a top cut sometimes shows low surface roughness and efficiency in comparison with a side cut. Thus, the study presents the development of a new machining method using both a top cut and a side cut continuously, taking account of advantages of the two cutting methods. In this machining, the side cut is preferentially employed in terms of cutting efficiency since the pick feed can generally be set larger than for the case of a top cut when the cusp height on the workpiece surfaces is kept constant. The side cut is continuously switched over to the top cut when the former cannot cope with workpieces having such surfaces as concave and/or overhanging ones. The control program developed on the basis of the above concept generates collision-free tool paths which are converted into actual NC data by a post-processor. From two kinds of cutting experiments, it is found that the method proposed is valid for 5-axis control machining.

5-Axis Machining

IMS Lab.

1996, by K.Morishige