Drive head and ECM method and tool for making same
作者： Terry L. Lievestro , Edward I. Stamm , Vicky S. Budinger , William C. Anderson
DOI:
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摘要: A drive head for a bolt, fastener, coupling, nut or other driveable made from less malleable metal such as powder nickel alloy. The has an upper portion having at least six convex corners spaced around the outer periphery thereof, each corner terminating in edge. also lower flange adjacent to and edge extending radially outwardly of corner. is formed by subjecting blank generally circular electrochemical machining (ECM). tool provided ECM method form head.
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