Title: Development of a novel 6DOF multi-contact material cutting model for visio-haptic rendering applications

Authors: Gorkem Uner, Erhan Ilhan Konukseven

Addresses: TUSAS-Turk Havacilik ve Uzay Sanayii A.S. Fethiye Mahallesi, Havacilik Bulvari No. 17 06980 Kazan, Ankara, Turkey. ' Department of Mechanical Engineering, Middle East Technical University, Inonu Bulvari 06531, Ankara, Turkey

Abstract: In this study, a haptic-based cutting force model and a virtual cutting operation application are developed in which the user is provided to feel the deformable object by probing and then to physically deform it. A cutting force model that depends on the spring-damper method is proposed for interacting with volumetric data for both cutting force and torque calculations in real-time with the flexibility of different cutting tool head shapes, sizes and rotation speeds. The realism of the force-rendering is enhanced in medical and CAD/CAM fields. To compare the realism of the model, however, tooth data is implemented in the application. A novel 6DOF multi-contact method is introduced for reducing the computational load of voxel-based collision checks. For deformation of an object, |L| shaped tool handles and different tool heads (spherical, conical and flat) with different cutting speeds and sizes are used. Conical and flat tool heads are physically modelled and applied.

Keywords: virtual reality; haptics; 6-DOF haptic rendering; cutting force modelling; virtual cutting; spring damping; medical engineering; CADCAM; deformation; cutting speed; tool heads; visio-haptic rendering.

DOI: 10.1504/IJDE.2010.039760

International Journal of Design Engineering, 2010 Vol.3 No.3, pp.260 - 275

Available online: 18 Apr 2011 *

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