Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
January 4, 2011
Patent Application Number
11764951
Date Filed
June 19, 2007
Patent Primary Examiner
Patent abstract
A micro-concave portion machining method is provided for forming micro-concave portions on an inner circumferential surface of a cylindrical bore form in a workpiece. The micro-concave portion machining method includes performing mirror surface machining and subsequent plastic working on the inner circumferential surface. The plastic working on the inner circumferential surface forms a plurality of recesses with each of the recesses including a micro-concave portion.
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