Patent ID: 9639079
Date: 2017-05-02
CPC Classifications: G05B

Claim:
1. A numerical control device controlling a machine tool that includes two tool posts opposing each other with a main shaft therebetween, in which one tool post among the two tool posts includes a plurality of first cutting shafts that are perpendicular to the main shaft, in which another tool post among the two tool posts includes one second cutting shaft that is perpendicular to the main shaft, and in which each of the first cutting shafts and the second cutting shaft are arranged such that there is an angular difference between each of the first cutting shafts and the second cutting shaft, the device comprising: a memory that stores in advance angular difference information on an angular difference between each of the first cutting shafts and the second cutting shaft and a machining program that includes a movement command for the one tool post to move an imaginary shaft, which moves along a same line as the second cutting shaft and performs cutting from a direction opposite to the second cutting shaft with respect to the main shaft; a shaft-command distribution processing unit that distributes a movement command to move the imaginary shaft to the first cutting shaft components in accordance with the angular difference information; and a shaft-synchronization processing unit that causes the one tool post to perform cutting in a direction of the imaginary shaft by driving each of the first cutting shafts in accordance with each movement command distributed to the first cutting shaft components and causes the another tool post to perform cutting in a direction opposite to the direction of the imaginary shaft by driving the second cutting shaft by a movement amount same as a movement amount in the direction of the imaginary shaft.