Patent ID: 8748774
Filing Date: 2014-06-10
Classification: B23K

Abstract:
1. A controller for controlling a process nozzle and a laser oscillator to process a workpiece along a process path determined according to a process program, the controller comprising: an analyzer configured to analyze (i) two main process paths which are adjacent to each other and (ii) a connecting process path continuous to both of the main process paths on the basis of the process program, wherein the connecting process path comprises at least one selected from the group consisting of (a) at least one circular-arc process path and (b) at least one linear process path; a calculator configured to calculate an angle of a virtual corner part formed by the two main process paths; a determining unit configured to determine a changing unit configured to change a laser process condition in the connecting process path from a laser process condition in the main process paths when the determining unit determines that the linear distance or the distance along the connecting process path is equal to or less than the first predetermined value and the angle is equal to or less than the second predetermined value; wherein the changing unit is configured to change the laser process condition in the connecting process path so as to set at least one selected from the group consisting of