Valve seat bushing machining apparatus

Details Valve seat bushing machining apparatus Valve seat bushing machining apparatus

1990-07-20

1991-09-03

Bishop, Steven C.

Cutting by use of rotating axially moving tool

Machine including plural tools

Coaxial tools

82 14, 408 42, 408118, 408158, 409233, B23B 4106

Patent

active

050448412

ABSTRACT:
Apparatus for machining a valve seat and valve stem guide all from the valve seat side of a head or block. The valve seat is machined in one pass by a single point cutting tool which is moved on two axes and, the valve guide bore is machined by a reamer. The movements of the single point cutting tool and reamer are numerically controlled.

REFERENCES:
patent: 2896308 (1959-07-01), Swords
patent: 4692074 (1987-09-01), Smith et al.
patent: 4789280 (1988-12-01), Dobat et al.

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