Patent ID: 7357769
Filing Date: 2008-04-15
Classification: B23Q,Y10T

Abstract:
1. A machine tool comprising: a bed furnished with a rectangular base, right and left sidewalls provided standing along respective sides of the base and opposing each other across an interval, and a rear sidewall provided standing along the back of the base between the right and left sidewalls; a table disposed on the bed in a space surrounded by the three sidewalls of the bed; a first saddle having a rectangular frame shape with both lengthwise end parts supported by a top portion of the left and right sidewalls of the bed, and disposed freely movably back and forth in a horizontal plane; a second saddle disposed freely movably side-to-side in a horizontal plane inside the frame of the first saddle, and comprising a vertical through-hole; a spindle head disposed freely movably vertically inside the through-hole of the second saddle; a main spindle disposed over the table with the main spindle axis vertical and the main spindle supported by the spindle head freely rotatably on the main spindle axis; a first guide mechanism for guiding the first saddle back and forth; a second guide mechanism for guiding the second saddle side-to-side; a third guide mechanism for guiding vertical movement of the spindle head; a first feed mechanism for moving the first saddle back and forth; a second feed mechanism for moving the second saddle side-to-side; a third feed mechanism for moving the spindle head vertically; and a first rotation drive mechanism for rotating the main spindle on the main spindle axis.