Predictive modeling of surface roughness of centered and un-centered work piece lengths in turning operation \

الملخص EN

The attempt of the present study has addressed an area that has been relatively neglected in the past researches.

This area focuses on studying and analysis the effect of different centered and un-centered workpiece lengths, using turning machine tailstock, on the products surface roughness, and then collecting data to generate an experimental charts and equations for the prediction modeling of surface roughness and increasing productivity for many turned products.

These charts and equations could be serving as a quick indication for manufacturers to avoid pre-chatter conditions and the trial and error methods, and consequently reduce the required experience in this field.

So, the applicable range of workpiece lengths can be safely extended from 10 mm to 60 mm bars with 10 mm in diameter, and from 10 to 75 mm bars with 20 mm in diameter.

This range could be increasing as bar diameter increasing and vise versa.