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RESEARCH PRODUCT

Orthogonal and Oblique Cutting Mechanics

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description

This chapter provides the engineering knowledge and modelling techniques applied in description of the material behaviour in the cutting zone resulting in chip formation and its separation from the bulk material. Geometrical and kinematical characteristics of orthogonal and oblique cutting models are classified and specified. Forces acting on the cutting tools and their measurement methods for several machining operations, such as turning, milling, drilling, boring and grooving, are presented. Moreover, forces acting in the cutting zone and their resolution on the shear plane and the rake and flank faces, along with stress distributions, are presented. The chapter highlights how components of the resultant cutting force change when varying cutting parameters and tool geometry. The problems concerning the determination of plastic deformation of the material in the cutting zone and the appropriate models are outlined. Finally, formulae for such fundamental characteristics of plastic deformation in the chip formation zone as the chip compression ratio, the shear angle, the shear strain, and strain rate are provided and discussed in terms of machining conditions.