公开(公告)号：WO1989001386A1

公开(公告)日：1989-02-23

申请号：PCT/JP1988000792

申请日：1988-08-10

Applicant: FANUC LTD ,  ARAI, Takeji

Inventor： FANUC LTD

IPC: B23K26/14

CPC classification number: B23K26/14 ,  B23K26/1476 ,  G05B19/408 ,  G05B2219/36495 ,  G05B2219/45165

Abstract: An assist gas control system for a CND laser machining apparatus is provided in which a laser machining apparatus and a numerical controller (CNC) are coupled together. When the laser machining is carried out, the kind of assist gas, mixing ratio, pressure and flow rate are instructed by machining program and controlled by a flow-rate control valve (32), a pressure control valve (33) and the like through a numerical controller (10). Since the kind of assist gas, mixing ratio, pressure and flow rate are instructed by the machining program and are automatically controlled, the operator is relieved from the need for the selection of assist gas, and various settings and adjustments, and thus it becomes possible to reduce the time for making preparation for the machining and to carry out the laser machining with precision.

公开(公告)号：WO1988001765A1

公开(公告)日：1988-03-10

申请号：PCT/JP1987000626

申请日：1987-08-26

Applicant: FANUC LTD ,  SEKI, Masaki ,  TAKEGAHARA, Takashi

Inventor： FANUC LTD

IPC: G05B19/403

CPC classification number: G05B19/4093 ,  G05B19/40937 ,  G05B2219/34098 ,  G05B2219/35244 ,  G05B2219/36215 ,  G05B2219/43129 ,  G05B2219/43147 ,  G05B2219/45165 ,  G05B2219/50109 ,  Y02P90/265

Abstract: Whether the inside of a beam path is a part (PT) or the outside is the part at a corner (CN) is determined from an offset direction that indicates whether the laser beam (RB) be offset toward the right side or the left side in the direction of progress included in the motion definition sentence and from the bending direction at the corner in the beam path (bi, bi+1). When the inside of the corner is the part, an escape path (EP) that has been set in advance is inserted in the corner portion of the beam path to prepare an NC PERT programm for laser machining. When the outside of the corner is the part, an NC PERT program for laser machining is prepared so that similarly set machining conditions are obtained within a preset machining condition changing section (QP, PR).