Patent ID: 7465133
Filing Date: 2008-12-16
Classification: B23B,B23D,Y10T

Abstract:
1. An apparatus for machining a finished borehole in a workpiece, in a single pass, said apparatus comprising: a tool configured to mill or ream the workpiece when in contact therewith and while rotating and translating relative thereto, so as to produce the finished borehole in the workpiece; a tool holder configured to rotate the tool and secure the tool in a fixed position relative to the tool holder, so as to present a distal tool end; and a first bushing retractably coupled to the tool holder, and presenting a support section laterally adjacent at least a portion of, so as to limit deflection by, the tool, during machining, said tool and bushing being cooperatively configured so that the bushing contacts the workpiece after the tool, and slidably engages the tool during at least a portion of the tool translation period.