Multiple function inserts for port cutting tool

Details Multiple function inserts for port cutting tool Multiple function inserts for port cutting tool

1998-06-01

1999-09-28

Pitts, Andrea L.

Cutting by use of rotating axially moving tool

Tool-support with means to permit positioning of the tool...

Pivotable tool

408224, 407113, B23B 5100

Patent

active

059576332

ABSTRACT:
A cutting tool for forming complex ports within metal workpieces. The present invention provides a cylindrical body to one end of which are attached indexable cutting inserts. One set of inserts is provided at a reduced diameter portion of the shaft for forming a boring section which enlarges and uniformly shapes the diameter of a pilot hole. A second set of inserts is provided at an enlarged diameter section of the shaft for performing multiple functions such as forming both the countersink and the spot face areas of the port. Each set of cutting inserts is substantially equidistantly disposed about the circumference of the shaft to reduce the chatter or deflection of the porting tool and therefore allow a port to be formed in adherence with very tight tolerances. In addition, since at least two inserts are provided at each diameter, the axial feed rate of the porting tool is relatively high in that a full revolution of the tool is not required to form a cut as is required by prior art porting tools.

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