Plasticity Analysis of Cutting Process with Abrasive Grain (3rd Report) : Cutting with Abrasive Grain of Several Triangular Rake Faces

摘要

This paper presents several cutting models for three dimensional cutting with abrasive grains of two triangular rake faces of plus inclination. The models are designed for continuous chip formation along or across the edge line, incomplete chip formation, wall formation of partial chip or plastic upheaval along the groove cut and separate chip formation by each rake faces. Their deformation may be interpreted as a piling of plane plastic flow. An energy method is developed for the proposed cutting models, which enables to predict the formation and the component of cutting force by using the data in orthogonal cutting under equivalent cutting conditions. Then the cutting force components F_H and F_V are measured and further the transition state between the models are observed by changing the inclination of the 2nd triangular rake face made of sintered carbide in turning experiment. The measured results are in good agreement with the analytical results except for the normal force F_V in the case of model [II, IV] and [VI].