Ball Bar Measurement Equivalent to Cone Frustum Cutting on Multi-axis Machine

(6th report: Program Generation Utilized by the New Numerical Controller Function)

Abstract

Interpolation accuracy test methods for five-axis machining center by using ball bar will soon be adopted in ISO. One of the tests is by moving a cone frustum path that is equivalent to cutting test described in NAS979. However, the NC programs for the ball bar tests are sometimes difficult by conventional CAM software since ball bar test are without cutting operation. In this report, NC program generation methods for cone frustum ball bar test are introduced by taking new NC functions for 5-axis machining into account, such as Tool Center Point control, Tool Posture control.