Apparatus for changing the tool holders carrying mounted tools on a machine tool

Claim 1

Apparatus for changing tool holders carrying tools used on a lathe having a main frame, a bed slide longitudinally slidable on said main frame, a face slide slidably mounted on said bed slide for transverse movement with respect thereto and inclined to the horizontal said apparatus including in combination: a tool turret rotatably supported by said face slide and having at least two tool holder clamping devices, at least one movable tool holder magazine supported by said main frame for slidable movement in the same direction as said bed slide and positioned generally above said face slide and above the turret, said magazine having a series of arbors, each carrying a tool holder, and having means for indexing said arbors around a closed loop having a straight portion lying in a plane perpendicular to the longitudinal displacement direction of said bed slide and being at least as long as the displacemnt range of the turret in the displacement direction of said face slide, and arranged generally above and directly opposite saidmentioned displacement range of said turret, said magazine itself being displaceable only in the displacement direction of said bed slide, and said indexing movement of said arbors and their tool holders on said magazine lying parallel to the displacement direction of said face slide, tool holder transfer means supported by said face slide for transferring tool holders between said magazine and said turret.