Abstract
Results of simulation studies made using the direct CAD method are presented. The significance of the influence of the toroidal cutter axis orientation parameters and curvature radius of the sculptured surface on the cut layer in a 5-axis milling of the convex-concave and concave-convex surfaces, was assessed.
Highlights
The progress of the machine industry, and in particular aviation industry, is connected with development of modern construction materials and the production technology of geometrically complex parts [1, 2, 5, 8]
The accuracy of shape and roughness of complex surfaces depend mainly on kinematic parameters of five-axis machining and geometric parameters of the surface to be machined, as illustrated in fig. 1
The contact conditions between the toroidal cutter and the surface to be machined result directly from the kinematics of the five-axis milling process. They are determined by: mutual position of the tool and the machined surface, implemented by kinematic angular parameters α and β of the tool axis orientation with respect to the normal vector, e.g. to the machined surface, geometric parameters of the sculptured surface, technological parameters of milling, shape and size of the cross-section of the cutting layer, which in turn determine the components of the cutting force acting on the tool and the workpiece, and affect the accuracy of the surface being machined
Summary
Results of simulation studies made using the direct CAD method are presented. The significance of the influence of the toroidal cutter axis orientation parameters and curvature radius of the sculptured surface on the cut layer in a 5-axis milling of the convexconcave and concave-convex surfaces, was assessed. Complex CAD systems and CAD/CAM systems are used for modeling sculptured surfaces and designing the process of their five-axis machining. These programs and expanded kinematically multi-axis machining centers enable machining of an object with any curvilinear contour [1, 2, 8]. These parameters have a significant impact on the contact conditions in the contact zone of the toroidal cutter working surface and the machined surface, and on the course of five-axis milling [3, 4, 6, 7]
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