Surface Roughness Analysis Versus Depth Of Cut In CNC Milling

Nicholas, Cyril Donovan (2010) Surface Roughness Analysis Versus Depth Of Cut In CNC Milling. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

This work focuses on the study of the effects of depth of cut using CNC milling to investigate mechanical forces impacting the outcome of surface quality on 6061-T6511 Aluminum Alloy steel using TiALN coated carbide 4 flute end-mills. This work also looks into the cutting forces brought upon by the horsepower required at the spindle acting upon the workpiece, more specifically tangential forces exerted by the depth of cut acting upon the 6061-T6511 Aluminum Alloy workpiece and the resultant surface quality. Tangential forces generated by the horsepower required to move the spindle at a predetermined cutting depth has been found to be one of the contributing factors in the deterioration the surface quality as elaborated further in this work. Furthermore, this work will delve into the relationship the depth of cut has to the surface roughness quality and the foreseeable outcome which is dissimilar hardness of solids in contact gives rise to penetration of the harder asperities into the surface of the softer body. The deformation of the harder body is substantially smaller than that of the softer body and can be neglected. The surface roughness of the softer body should be taken into account.

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