MULTI-PART DOVETAIL REPAIR BROACH ASSEMBLY AND METHODS OF USE
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United States of America Patent
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Apr 22, 2003
Grant Date -
May 8, 2003
app pub date -
Nov 7, 2001
filing date -
Nov 7, 2001
priority date (Note) -
Granted
status (Latency Note)
Importance
Abstract
The broach assembly includes alternate spacers and cutters arranged in a sub-assembly having a lead at a leading end and a lag at a trailing end. The cutters have side margins in excess of the margins of the spacers for cutting material from the dovetail slots of the turbine wheel as the broach assembly passes through the slots. The bottom or apices of each spacer is tapered and extends beyond the corresponding surface of the cutter to progressively displace the assembly in a radial outward direction to progressively cut the active dovetail slot surfaces. Shims may be disposed in the bottom of the slot to further displace the broach assembly radially outwardly in multiple passes.
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