Align boring machine

Claim 1

A boring machine for alignment boring of a plurality of bearing housings of an automotive engine block comprising: a horizontally elongated base having vertical and horizontal longitudinally extending machine ways; a first vertical adjustable-in-height column supported by one end region of said elongated base and in engagement and aligned with said machine ways, and a second vertical adjustable-in-height column supported on an opposite end region of said elongated base and in engagement and aligned with said machine ways; an elongated horizontal track on said base between said vertically extending columns, which track defines a longitudinal axis and horizontally reference plane in alignment with said vertical and horizontal machine ways; a table adapted to be supported by and be longitudinally movable along said track; feed means for selectively moving said table along said track; a boring bar; bearing support means for horizontally and rotably supporting ends of said boring bar on and between said columns and along a line in a first plane parallel with the plane of said vertical machine ways and coincident in a second plane parallel with the plane of said vertical machine ways; drive means coupled to one end of said boring bar for rotating said boring bar; engine block support means for adjustably, vertically and laterally, and rigidly supporting an engine block on said table with said boring bar through bearing housings with said bar concentrically positioned with respect to the center of a desired bore through said bearing housings; and at least one cutting tool mounted on said boring bar, whereby bearing housings of an engine block may be bored by moving said table longitudinally by operation of said feed means.