Machine tool

A machine tool comprising:

• a base frame including two upright side frames that bound two sides of a machining area located therebetween, in which machining area a workpiece mounted on a workpiece table is machined, the base frame also including a connection frame connecting the two side frames, the workpiece table being arranged on the base frame in the machining area;
• a machining unit arranged on an upper portion of the base frame, wherein the machining unit includes a tool spindle device for machining the workpiece mounted on the workpiece table;
• and
• a connection arrangement which connects the machining unit and the base frame in a detachable manner so as to permit the selective detachment and reattachment of the machining unit to the base frame;
• the machine tool further comprising a machining area cover arranged in an area formed by the base frame and the machining unit to shield the machining area from an area exterior to the machine tool, wherein the machining area cover includes:
• a main cover inside the two side frames and arranged to surround the workpiece table;
• a top cover attached in a separable manner to a top edge of the main cover and formed with portions that extend and retract so as to follow movements of the tool spindle device;
• a lower cover having a chute-shape and attached in a separable manner to a bottom edge of the main cover.