To provide a thermal displacement correction method of a machine tool in which the influence of thermal deformation can be eliminated without requiring large calculation resources by such a manner that the thermal deformation of the machine tool is calculated by a relational expression using a neutral network and the influence of the thermal deformation is eliminated by correcting a position of each movable part, and a device.
By inputting a group of input data on the structure temperature of the machine tool and the ambient temperature of the machine tool or the like, outputting the thermal displacement amount of the machine tool at that time, and giving input data and teacher data to the neutral network containing a non-linear function between the input and the output, the thermal displacement correction method comprises a procedure in which relation between the group of the input data and the thermal displacement amount is made to learn, a procedure to calculate the relational expression between the group of the input data and the thermal displacement amount from the leaned neutral network, a thermal displacement amount calculation procedure to calculate the thermal displacement amount by the relational expression from the group of the input data, and a procedure to correct the position of each movable part of the machine tool by the thermal displacement amount calculated by the thermal displacement amount calculation procedure.
URANO KOICHI
TANABE IKUO
| JP2001138175A | 2001-05-22 | |||
| JPH11114776A | 1999-04-27 | |||
| JPH0775937A | 1995-03-20 | |||
| JPH068107A | 1994-01-18 | |||
| JPH0232099B2 | 1990-07-18 |