Precision Sculptured Surface CNC Machining Using Cutter Location Data

Abstract:

Industrial parts with sculptured surfaces are typically, manufactured with the use of CNC machining technology and CAM software to generate surface tool paths. To assess tool paths computed for 3-and 5-axis machining, the machining error is evaluated in advance referring to the parameter controlling the linearization of high-order curves, as well as the scallop yielded as a function of radial cutting engagement parameter. The two parameters responsible for the machining error are modeled and corresponding cutter location data for tool paths are utilized to compare actual trajectories with theoretical curves on a sculptured surface assessing thus the deviation when virtual tools are employed to maintain low cost; whilst ensuring high precision cutting. This operation is supported by applying a flexible automation code capable of computing the tool path; extracting its CL data; importing them to the CAD part and finally projecting them onto the part’s surface. For a given tolerance, heights from projected instances are computed for tool paths created by changing the parameters under a cutting strategy, towards the identification of the optimum tool path. To represent a global solution rough machining is also discussed prior to finish machining where the new proposals are mainly applied.

• Periodical: Key Engineering Materials (Volume 686)
• Pages: 224-233
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.686.224
• Online since: February 2016
• Authors: Nikolaos A. Fountas, Nikolaos M. Vaxevanidis*, Constantinos I. Stergiou, Redha Benhadj-Djilali
• Keywords: CNC Machining, Cutter Location Data, Machining Error, Sculptured Surfaces

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