Patent ID: 9149900
Filing Date: 2015-10-06
Classification: B23Q,Y02P,Y10T

Abstract:
1. A machine tool which makes a tool which is attached to a spindle and a workpiece which is attached to a table move relative to each other to machine said workpiece, said machine tool comprising: a bed which serves as a base frame, a lifter which moves along a top-bottom guide which is provided at a back surface of said bed upward from near a floor surface, a spindle head which is provided at said lifter and supports said spindle in a rotatable manner, and a table which is provided at a top surface side of said bed and to which said workpieace is attached, wherein said lifter is driven in a top-bottom direction by a top-bottom driver which has a single top-bottom feed screw which is provided at said bed to be parallel to said top-bottom guide and a feed motor which is coupled below said top-bottom feed screw and is arranged near the floor surface, the single top-bottom feed screw is provided at a center part of a left and right pair of top-bottom guides in parallel with said top-bottom guide, and the machine tool is provided with a pair of working fluid channels which receive working fluid which drops down from a periphery of said table to the inside of said bed, divide said working fluid into two branched channels, pass between said top-bottom feed screw and said left and right pair of top-bottom guides, and guide the working fluid to a working fluid tank which is provided at the rear of said bed.