Machining, Measurement, and Control Laboratory

Shaper Cutting Simulation with Mesh Free Method
Yusuke Koike, Niklaus Rüttimann, Konrad Wegener

When a cutting tool and cutting conditions are determined to machine a workpiece, cutting forces and cutting phenomena are unknown before machining. If the cutting force estimation are possible to be conducted before machining, the workpiece deformation is able to be estimated and compensated. Thus, the cutting force estimation is required. In recent years, SPH (Smoothed Particle Hydrodynamics) is applied to elastic-plastic problems. SPH has no problem which is caused by a large deformation and a crack, because SPH is one of Mesh Free methods and requires no elements. Thus, in this research, cutting forces of the shaper cutting are estimated by using SPH. Cutting forces of shaper cutting experiments are measured and compared with those of SPH simulations. As a result, simulated principle forces are approximately 58% smaller than those of shaper cutting experiments.