Appropriate Tool Orientation for Precise Machining for Ball End Milling

Abstract

The elastic deformation of the ball end mill is the main cause of machining error. In this report, the geometric influence of the tool orientation on the thickness of undeformed chip is examined. The cutting area at the machined surface is different as the tool orientation is changed. We developed the experimental method for measuring the machining error on inclined surface in any direction. The experimental result for several materials confirms the influence of tool orientations. Relationship between the tool orientation and machining error has been clarified. Finally the appropriate tool orientation for precise machining has discussed.