Patent ID: 11919112
Assignee: NAGASE INTEGREX CO., LTD.
Field: Machine tools (Mechanical engineering)
Classification: CPC B  Y | IPC B

Claim 0:
1. A machine tool comprising:
a bed;
a guide rail arranged on the bed and extending along a first axis;
a table configured to support a workpiece, the table being supported by the guide rail such that the table moves along the first axis; and
an adjustment member arranged at a lower part of the bed and configured to adjust a deformation degree of the bed, wherein
the bed includes two attachment portions spaced apart from each other in a direction along the first axis,
the adjustment member includes:
two first thread bodies respectively fixed to the two attachment portions and extending along the first axis, the two first thread bodies being arranged coaxially and opposed to each other at an interval in the direction along the first axis; and
a second thread body including an operation part and two threaded parts respectively arranged at opposite ends of the operation part and coupled to the first thread bodies,

the operation part is operated to rotate the second thread body so that the two attachment portions receive, from the two first thread bodies, a force that moves the two attachment portions toward or away from each other, whereby the bed is deformed to adjust the straightness of the guide rail.