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United States Patent 5,847,359
Sugahara, et. al. Dec. 8, 1998

Laser beam machining system and method with restart command function

Abstract

A laser beam machining system which can select optimum work conditions at a restart point and restart cutting after a temporary emergency stop. In the machining system, a work command section receives a command based on a work program from a program analysis section and outputs a work command for operating a laser oscillator and a laser beam machine. The work command section also receives a restart command for releasing an emergency stop state from a restart command section, and generates and outputs a corrected work command for work restart in conjunction with the restart command section.


Inventors: Sugahara; Masayuki (Aichi, JP); Mori; Toshihiro (Aichi, JP).
Assignee: Mitsubishi Denki Kabushiki Kaisha (Tokyo, JP).
Appl. No.: 589,877
Filed: Jan. 23, 1996

Foreign Application Priority Data
Jan. 31, 1995 [JP] 7-013809
Intl. Cl. : B23K 26/00
Current U.S. Cl.: 219/121.72; 219/121.67; 219/121.78; 364/474.08
Field of Search: 219/121.6, 121.61, 121.62, 121.67, 121.72, 121.78, 121.84, 121.85; 364/474.08

References Cited | [Referenced By]

U.S. Patent Documents
5,293,024Mar., 1994Sugahara et al. 219/121.67
5,585,018Dec., 1996Kanaoka et al. 219/121.72

Foreign Patent Documents
0633092Jan., 1995EP
3-106583May, 1991JP
3-254380Nov., 1991JP
6-202722Jul., 1994JP
Primary Examiner: Walberg; Teresa J.
Assistant Examiner: Mills; Gregory L.
Attorney, Agent or Firm: Sughrue, Mion, Zinn, Macpeak & Seas, PLLC
6 Claims, 24 Drawing Figures

Back to 1998's patent survey.