الفهرس 
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Abstract
The problem of surface roughness analysis involves difficulty and complication in its nature Surface roughness measurement for the purpose of achieving more economical production oved products havin.g surface te::dttre which best suit their c purpose. There is now a gruwiJ1,.g realization that a closer over the firdsh of linportant parts of mechanisms may well practice not only to better functionirlb performance but increase of the service life of the parts involved. vel’, it is not always sufficient merely ~o go on improving Dish of parts in order to ensure progressively better ance .
surface rou.ghness of the machined parts brought about the l’ studyir~ the different factores affecting the roughness parts. machini.ng conditioI1S ai’fe:~t tho bo~h the surface quality machined po..rtstlie d.ur[~bility of the cutting tool. tool wear pIa”ss an important role in the ecnomics of the ing process as well as on the accuracy and surface quality machined parts.
purpose of the present ’[;ark is to investigate the effect different parameters involved in the machining of the surfaces on both the resulting surface roughness and tool i
I Sets of turned specimens were prepared with different ning conditions.
surement for both surface roughness amplitude parameters
~ool weer were carried out on the examined specimens. ~hematical relations between the machining conditions and Fach of ruughness paramet(jrs of the tested specimens and I wear were conlude do results Dhows Good agreement between the measured values oughness pa.rameters and tool flank wear height and those es computed using the concluded mathemat~cal relations. study was further conduJcd to design NOlllogramS for practical ication to uetermine the v:.1lues of roughness pararnctern and tool weCir .i.cordin~.’; to conditions of machining for turned esse