The study of regularities of formation form errors, roughness and waviness in the mortise centerless grinding tsarf frogs drive shafts, depending on the time of developmental care

We present the results of studies of error forms, roughness and waviness of the surfaces of pins frogs driveshafts trucks with mortise centerless grinding, depending on the time of nursing. These results provide the quality of the surfaces of pins frogs driveshafts.