Valve seat and valve guide machining tool

Abstract

A valve seat and valve guide machining tool for the precision machining of valve seats and valve guides in a cylinder head of an internal combustion engine is disclosed, comprising at least two tool parts (3,5) of which a first comprises at least one geometrically defined cutter (11), provided for the valve seat machining and a second comprises at least one geometrically-defined cutter (15), provided for valve guide machining, which are connected to each other by means of a precision interface (17). The precision interface (17) is a squat conical connection, comprising a first plane surface (19) on the first tool part (3) and second plane surface (21) on the second tool part (5), arranged perpendicular to a mid-axis (23) of the tool (1) and, in the assembled state of the tool (1), lie adjacent to each other, said first tool part (3) being made from steel. The tool is characterised in that the second tool part (5) is divided into two sections (39,41) of which a first section (39) is made from a hard metal and is provided with the precision interface (17) and a second section (41) is made from a material which is more elastic than the material of the first tool part (3), and comprises the at least one cutter (13) of the second tool part (5).

Dependencies are inferred from the claim text.