Abstract
The paper presents a method of modelling roughness parameters in the process of low-rigidity elastic-deformable shafts turning. The developed model assumes that the cutting tool moves relative to the part in accordance with the kinematics of turning. The cutting tool vibrates in conformance with the direction of the thrust component of the machining force, and the cutting edge transfers the profile of its tip onto the part being machined. Moreover, the article contains results of the empirical verification of developed model realized by testing the repeatability of the roughness and waviness parameters of the surface during a 1-year operation of a lathe. Positive results confirm the model can be used for prediction of surface quality parameters in low-rigidity shafts turning.
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