Cutting by use of rotating axially moving tool – Tool or tool with support – Having inversely angled cutting edge
Patent
1992-01-13
1993-01-19
Bishop, Steven C.
Cutting by use of rotating axially moving tool
Tool or tool with support
Having inversely angled cutting edge
408203, 408225, B23B 516
Patent
active
051802600
ABSTRACT:
A adjustable chamfering reamer used in automated threading machines for reaming the ends of pipe or conduit. The adjustable chamfering reamer has an inner reamer insert adjustably installed within a generally cylindrical outer sleeve. The front of the outer sleeve has circumferentially spaced forwardly extending projections with a flat inwardly and rearwardly angled reaming surface and a trip shoulder at the bottom thereof. The inner reamer insert has a trunched conical forward end defined by a plurality of circumferentially spaced longitudinal wings extending rearwardly and outwardly from the forward end and the exterior of the wings are curved reaming surfaces. When assembled, the wings are positioned between the projections of the outer sleeve in alternating relation. When viewed from the side, the overlapped reaming surfaces and shoulders form a plurality of rearwardly extending flat-bottom V-shaped grooves. The width of the flat-bottom V-shaped groove can be adjustably altered by positioning the inner reamer insert relative to the outer sleeve to receive pipe or conduit of various wall thicknesses and to ream the exterior and interior diameters at the end of the pipe or conduit simultaneously. The adjustable reamer is secured in the die head of a threading machine and receives the end of a pipe or conduit during the threading operation.
REFERENCES:
patent: 4468829 (1984-09-01), Christensen
patent: 4930946 (1990-06-01), Phillips, Sr.
Bishop Steven C.
Roddy Kenneth A.
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