COMBINED BORING, DRILLING AND MILLING MACHINE

摘要

A machine tool having a vertically movable spindlehead provided with an extensible and retractable power-driven rotatable tool spindle including spring-biased mechanism for securing a tool member in the extensible end thereof releasable by a fluid pressure motor, a work-supporting compound slide assembly having two slide members movable in directions at right angles to one another in horizontal planes, all being selectively movable in opposite directions along their respective paths of movement, a tool magazine on the top slide of the work-supporting compound slide for holding a plurality of tool members in predetermined angular positions, means for stopping the spindle in a predetermined angular position upon discontinuation of its rotation and numerical control for affecting operation of the machine to perform a machining operation on work with at least two different tool members automatically transferring a previously used tool from the tool spindle to the magazine and a new tool from the magazine to the tool spindle.