Abstract
The theory of plasticity applied to the non-steady plastic flow produced by a cutting edge which is engaged paralell to the side of a workpiece is proposed. The theory is veri-fied to be in good agreement with the experimental results in slow speed machining.
The friction characteristics and the coefficient of friction on the rake face in slow speed machining is discussed in conjunction with the slip line construction of the plastic field whithin the chip.
The plastic deformation in discontinuous chip formation appears to be analogous to the non-steady flow in the edge engaging.
