Numerical control device

A numerical control device that controls a machine tool and a peripheral device to be placed around the machine tool according to a numerical control program, the numerical control device comprising:

• an operation-pattern storage unit that stores operation patterns each including commands for causing operations by the peripheral device to be executed, the commands using configuration of a shaft of the peripheral device, M code unique to the numerical control device, or moving amount of the peripheral device as variables;
• a machine-information storage unit that stores machine information in which a value with respect to each of the variables is specified for the shaft of the peripheral device or for the unique M code;
• a program analysis unit that receives the numerical control program, and when a command in the numerical control program is a command for the machine tool, delivers the command to a numerical control unit, and when the command is a command for the peripheral device including a first argument indicating an operation pattern stored in the operation-pattern storage unit and a second argument indicating a moving amount of the peripheral device, acquires the operation pattern corresponding to the first argument from the operation-pattern storage unit, and delivers the operation pattern to a peripheral-device operation generation unit together with the moving amount indicated by the second argument;
• the peripheral-device operation generation unit that generates a peripheral device command by substituting the corresponding machine information or the acquired moving amount for each of the variables in the commands constituting the acquired operation pattern;
• the numerical control unit that generates a move command with respect to the machine tool or the shaft constituting the peripheral device from a command in the numerical control program or the peripheral device command, and
• an operation-information storage unit that stores operation information specifying operations of the peripheral device or a constituent member of the machine tool that is located at a position interfering with the peripheral device, wherein
• the variables in the operation patterns further include operations with respect to the peripheral device or the constituent member of the machine tool that is located at a position interfering with the peripheral device, and
• the peripheral-device operation generation unit substitutes the corresponding machine information, the acquired moving amount, or the corresponding operation information for each of the variables in the commands constituting the operation patterns, to generate the peripheral device command.