Numerical control device, and numerical control system

A numerical control system comprising:

• a numerical control device configured to control operation of a machine tool, and generate a robot command for a robot control device that controls operation of a robot, based on a numerical control program;
• and a robot control device configured to be communicable with the numerical control device and control operation of the robot based on a robot command sent from the numerical control device,
• wherein the numerical control device includes:
• a program pre-processing unit configured to generate a plurality of block robot command recognizable in the robot control device, and a plurality of block information associated with each block robot command, based on an analysis result of every block of the numerical control program;
• a robot command storage section configured to store a plurality of block robot commands and block information generated by the program pre-processing unit;
• a program execution manager configured to read a plurality of block robot commands associated with each of a plurality sets of block information designated by a predetermined program execution command, from the robot command storage section;
• and
• a first communication unit configured to send a plurality of block robot commands read by the program execution manager to the robot control device one by one every time receiving a completion notification sent from the robot control device;
• wherein the robot control device includes:
• a second communication unit configured to receive a block robot command sent from the first communication unit,
• a robot program generation unit configured to generate a robot program based on a block robot command received by the second communication unit, and
• an operation control unit configured to control operation of the robot based on a robot program generated by the robot program generation unit, and
• wherein the second communication unit sends the completion notification to the first communication unit every time processing based on one block robot command is completed.