Machine tool with index means

A machine tool apparatus comprising:

• a machine tool body;
• a spindle for holding and rotating a tool supported by said machine tool body for rotation about a horizontal axis;
• means for moving said spindle in a vertical direction;
• a bed disposed horizontally of, and secured to, said machine tool body;
• a first table slideably mounted on said bed for movement in a horizontal direction parallel to said axis;
• a second table slideably mounted on said first table for movement in a horizontal direction perpendicular to said axis;
• a first rotary table disposed on said second table, said first rotary table being indexed about a vertical axis;
• a second rotary table for holding a workpiece, said second rotary table being mounted on said first rotary tables and indexed about a horizontal axis parallel to said first-mentioned horizontal axis;
• workpiece feeding means for feeding the workpiece onto said second rotary table including a workpiece station, and an automatic workpiece changer means for loading a selected workpiece from said workpiece station onto said second rotary table and, after machining thereof, unloading the workpiece from said second rotary table and returning it to said workpiece station;
• said workpiece station including an endless type conveyor having a plurality of setting openings into which workpiece holders are set;
• said automatic workpiece changer including a changer body rotatable about a vertical axis, a rod that extends or contracts relative to said changer body, a plate fixed to an end of said rod, a main support attached to said plate, an arm support vertically slideable on said main support, an arm supported by said arm support for gripping the workpiece holder, and means for rotating said arm support and said arm with respect to said plate whereby the workpiece holder gripped by said arm can move in four directions.