Apparatus for exchanging a tool of a boring bar and method of exchanging a tool of a boring bar using the same

A machine tool comprising:

• a boring bar configured to receive a tool for machining a workpiece;
• a magazine configured to store the tool for machining the workpiece;
• a spindle configured to be movable in a same direction as the boring bar;
• a transfer stock configured to transfer the boring bar and the spindle, the boring bar fixed to a lower end of the transfer stock;
• a boring bar storage apparatus configured to store the boring bar when the boring bar is to be exchanged;
• a frame arranged under the magazine with respect to a vertical direction;
• a guide rail arranged on the frame, wherein the magazine is connected to the guide rail and wherein a longitudinal axis of the guide rail extends in a lateral direction perpendicular to the vertical direction such that the magazine moves along the guide rail in the lateral direction;
• an actuator configured to rotate the magazine;
• and
• a main shaft configured to fix the workpiece and rotate the workpiece so as to machine the workpiece, wherein a longitudinal center axis of the main shaft and a longitudinal center axis of the workpiece are aligned with one another so as to be concentric, wherein
• a longitudinal direction extends perpendicular to the lateral direction and perpendicular to the vertical direction,
• the magazine and the guide rail are positioned, with respect to the longitudinal direction, in their respective entireties, on a first side of the main shaft, and
• when the boring bar is machining the workpiece with the tool, the boring bar and the boring bar storage apparatus are positioned, with respect to the longitudinal direction, in their respective entireties, on an opposing second side of the main shaft.