Tool axis adjustment for 5-axis roughing operations

Precise gouging-free tool orientations for 5-axis CNC machining

We present a precise approach to the generation of optimized collision-free and gouging-free tool paths for 5-axis CNC machining of freeform NURBS surfaces using flat-end and rounded-end (bull nose) tools having cylindrical shank. To achieve high approximation quality, we employ analysis of hyper-osculating circles (HOC) [26, 27], that have third order contact with the target surface, and lead ...

Tractrix-based tool orientation control for 5-axis CNC machining

We consider a 5-axis CNC machine whose tool axis maintains a fixed angle with respect to the surface normal as the machine tool cuts a given path on a smooth surface. The tool axis a(ξ) lies on a cone of constant angle ψ about the surface normal n(ξ) at each point of the path, but its azimuthal position on this cone remains indeterminate. Geometrically speaking, given a curve n(ξ) on the unit s...

Tool Path Modification Approaches to Enhance Machining Geometric Accuracy in 3-Axis and 5-Axis Machining

Kinematic Modeling of the Tricept Based 5-axis Machine Tool

Abstract: This paper is aimed in presenting a study on the kinematic modeling of the Tricept based five-axis vertical machine tool. Since the machine comprises 3-DOF parallel structure and 2-DOF serial wrist kinematic modeling also comprises serial and parallel part. As solution of direct and inverse kinematics of 2-DOF serial wrist is well known the study in this paper will focus on the parall...

Accessibility in 5 - Axis

18 propellers is investigated, using the cusp (scallop) height as the objective function. This technique allow one to end mill a surface, while the tool is not necessarily oriented along the surface normal, stressing the need for better techniques to solve the accessibility problem in 5-axis modes. References 1] J. E. Bobrow. NC machine tool path generation from CSG part representations.