A time difference setting device is provided with: a speed change acquisition unit that acquires a change in speed of a driving mechanism with respect to a positioning command based on a machining program; a mechanism delay time calculation unit that calculates a mechanism delay time; a laser output calculation unit that uses an oscillator model for simulating the operation of a laser oscillator and calculates a change in output of the laser oscillator with respect to a laser command based on the machining program; a laser delay time calculation unit that calculates a laser delay time; and a command time difference setting unit that, on the basis of the mechanism delay time and the laser delay time, sets a command time difference for an interval in which an emission of laser light is designated in the machining program.

A computer controlled machining system is provided, and includes a multi-axis machining device that is configured to produce a workpiece based on a part print, which outlines nominal dimensions for the workpiece. A dimensional measuring device is configured to take or determine measured dimensions of the workpiece. A compensation processor is configured to take the measured dimensions from the dimensional measuring device and compare them to the nominal dimensions, and to determine a plurality of deviation sets from such comparison. The compensation processor transfers the deviation sets to the multi-axis machining device, which shifts a machine coordinate system based on the deviation sets.

A time difference setting device is provided with: a speed change acquisition unit that acquires a change in speed of a driving mechanism with respect to a positioning command based on a machining program; a mechanism delay time calculation unit that calculates a mechanism delay time; a laser output calculation unit that uses an oscillator model for simulating the operation of a laser oscillator and calculates a change in output of the laser oscillator with respect to a laser command based on the machining program; a laser delay time calculation unit that calculates a laser delay time; and a command time difference setting unit that, on the basis of the mechanism delay time and the laser delay time, sets a command time difference for an interval in which an emission of laser light is designated in the machining program.