Laser oscillation control system

• US 4,900,893 A
• Filed: 11/03/1988
• Issued: 02/13/1990
• Est. Priority Date: 03/20/1987
• Status: Expired due to Term

• Current Assignee: Fanuc Ltd (Fanuc Corporation)
• Original Assignee: Fanuc Ltd (Fanuc Corporation)
• Inventors: Yamazaki, Etsuo, Isohata, Shigeru, Nagamine, Tsuyoshi
• Primary Examiner(s): Albritton, C. L.
• Application Number:
  US07/273,516
• Time in Patent Office: 467 Days
• Field of Search: 219/121.82, 219/121.61, 219/121.67, 219/121.72, 219/121.84, 219/121.6, 219/121.85, 364/474.08
• US Class Current: 219/121.82
• CPC Class Codes: B23K 26/0853 Devices involving movement of the workpiece in at least in two axial directions, e.g. in a plane
• CPC Class Codes: G05B 19/408 characterised by data handling or data format, e.g. reading, buffering or conversion of data
• CPC Class Codes: G05B 2219/35252 Function, machine codes G, M
• CPC Class Codes: G05B 2219/45165 Laser machining

Abstract

A laser oscillation control system performing laser beam machining by controlling an X-Y table by a numerical control system.

An output of a laser oscillator is controlled by a G-code included in a program from a command system input to a numerical control system. An output power is commanded by an address S, a frequency by an address P and a pulse duty by an address Q. These command data are fed to a high-frequency power source to control a laser output.

Claims

1. A laser oscillation control system including a laser oscillator for performing laser machining by controlling the X-Y table with a numerical control system, an output of the laser oscillator being controlled by a G-code, a power output command, a pulse frequency command and a pulse duty ratio included in a command program of the numerical control system.

3. A laser oscillator control system according to claim 1, wherein said power output command is output by an address S, said pulse frequency command is output by an address P, and said pulse duty ratio command is output by an address Q.

4. A laser oscillator control system according to claim 1, wherein said program further comprises an assist gas control command.

2. A laser oscillation control system for laser machining, comprising:

an X-Y table;

command means for outputting a command program including a predetermined G-code, a power output command, a pulse frequency command and a pulse duty ratio;

numerical control means, connected to said command means, for receiving said command program, interpreting said command program and outputting said commands including said predetermined G-code, said power output command, said pulse frequency command and said pulse duty ratio command;

servo amplifiers, connected to said numerical control means, for receiving said commands from said numerical control means and outputting drive commands;

servomotors, connected to said servo amplifiers, for receiving said drive commands for driving said servomottors;

a high frequency power source, connected to said numerical control system, for outputting a predetermined power, frequency and duty ratio determined by said commands from said numerical control system;

laser means, connected to said high frequency power source, an output of said laser means being oscillated and amplified by said commands from said high frequency power source; and

valve means for providing assist gas, connected to said numerical control means, said commands from said numerical control system turning on and off said assist gas from said valves.