Cutting by use of rotating axially moving tool – Plural tool-assemblages – Coaxial
Reexamination Certificate
2006-08-15
2006-08-15
Ashley, Boyer D. (Department: 3722)
Cutting by use of rotating axially moving tool
Plural tool-assemblages
Coaxial
C408S191000, C408S224000
Reexamination Certificate
active
07090447
ABSTRACT:
A twist drill or drill/chamfer tool that comprises a drill with a shaft section. The shaft section is provided with a twisted flute and a clamping ring as the retainer of a facing cutter. The clamping ring tubularly encloses the shaft section or the drill shaft and can be fixed on the shaft section or drill shaft in different axial adjustable positions. The clamping ring can be tensioned on the drill with tension screws that extend through the clamping ring substantially radially to the axis of the drill. The tension screws impinge the surfaces of the twisted flutes, which twisted flutes are enclosed by the clamping ring indirectly with a clamping shoe that is interposed in a twisted flute.
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Jåger Horst
Zeug Berthold
Ashley Boyer D.
Kennametal Inc.
Nils H. Ljungman & Associates
Talbot Michael W.
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