A study to determine how tool geometry and workpiece material can be selected to produce low cutting forces, small fillet radii, smooth surface finishes, and burr-free edges required for the production of reliable miniature precision parts has indicated that tool geometries typically specified for general machining applications produce optimum results. Surface finishes of 0.56 to 1.07 ..mu..m AA (22 to 40 microinches) can be produced while maintaining 76.2-..mu..m (0.003 inch) fillet radii in ferrous and beryllium-copper alloys. Tool life is extremely short when fillet radii less than 76.2 ..mu..m must be maintained. Materials having high strain-hardening exponents produce large burrs.
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A study to determine how tool geometry and workpiece material can be selected to produce low cutting forces, small fillet radii, smooth surface finishes, and burr-free edges required for the production of reliable miniature precision parts has indicated that tool geometries typically specified for general machining applications produce optimum results. Surface finishes of 0.56 to 1.07 ..mu..m AA (22 to 40 microinches) can be produced while maintaining 76.2-..mu..m (0.003 inch) fillet radii in ferrous and beryllium-copper alloys. Tool life is extremely short when fillet radii less than 76.2 ..mu..m must be maintained. Materials having high strain-hardening exponents produce large burrs.
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Gillespie, L.K.Machinability of metals as related to miniature precision components,
report,
January 1, 1978;
United States.
(digital.library.unt.edu/ark:/67531/metadc1072532/:
accessed February 22, 2019),
University of North Texas Libraries, Digital Library, digital.library.unt.edu;
crediting UNT Libraries Government Documents Department.
