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Title:
SLOT MACHINING
Document Type and Number:
WIPO Patent Application WO/2013/109429
Kind Code:
A3
Abstract:
A method for cutting a blade root retention slot (24) in a turbine engine disk element (20) includes forming a precursor slot (24') in the element. The precursor slot (24') has first (40A, 41A, 42A, 44A, 45A) and second (40B, 41B, 42B, 44B, 45B) sidewalls and a base (46). A rotating bit (120) is passed through the precursor slot (24') to machine the base. The bit rotates about an axis (520) off normal to a direction (512) of passing. A cutting performance of the rotating bit (120) is modeled reflecting a chip trapping intensity parameter (cp) and a heat intensity parameter (HI). At least one parameter of the bit and its passing is selected so as to avoid tool loading where removed chips/swafs stick onto the bit.

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Inventors:
GUO CHANGSHENG (US)
SMITH TREVOR S (US)
Application Number:
PCT/US2013/020624
Publication Date:
November 06, 2014
Filing Date:
January 08, 2013
Export Citation:
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Assignee:
UNITED TECHNOLOGIES CORP (US)
International Classes:
G01N3/58
Foreign References:
US5377116A1994-12-27
US5689062A1997-11-18
US5691909A1997-11-25
US5801963A1998-09-01
US20050015983A12005-01-27
US20090287458A12009-11-19
Other References:
See also references of EP 2804717A4
Attorney, Agent or Firm:
SLATE, William, B. (P.C.c/o CPA Global,P.O. Box 5205, Minneapolis Minnesota, US)
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