Component parts of small mechanisms often require surface finishes of 0.406 to 0.812μm (16 to 32 microinches), nearly sharp edges, and very small fillet radii. In addition, edges generally must be free of burrs to assure reliable operation of the mechanism.nBecause of the importance of knowing before machining is begun how workpiece material and tool geometry will affect such vari¬ables as surface finish, fillet radius, burr size, and cutting forces, this study was directed toward determining the machinability of materials that commonly are used in the production of miniature precision components. Optimum machinability was defined in terms of the variables studied.
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