Boots – shoes – and leggings
Patent
1990-08-10
1991-11-12
Hayes, Gail O.
Boots, shoes, and leggings
364193, 3642219, G06F 300, G06F 1910
Patent
active
050653296
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The present invention relates to a laser machining control method, and more particularly to a laser machining control method wherein laser machining is carried out while the contents of a command program are changed.
Today, laser machining equipment including a numerical control system is widely used. In such laser machining equipment, an X-Y table is controlled by the numerical control system, a work is positioned on the X-Y table so that the work is subject to machining such as cutting by a laser beam emitted from a stationary laser oscillator.
Machining by laser machining equipment is performed according to predetermined command programs. The command programs include programs for movement of an X-Y table, an output power, a pulse frequency and a duty of a laser beam or the like.
In laser machining, however, it is generally difficult for machining conditions to be determined theoretically, and so, during an actual machining operation, the conditions are determined in many instances while machining is in progress. Thus, it is extremely troublesome for an operator to change the program each time machining conditions are changed.
SUMMARY OF THE INVENTION
It is an object of the present invention for solving the aforesaid problem to provide a laser machining control method wherein laser machining is carried out while the contents of a command program are changed.
In order to solve the aforesaid problem, the present invention provides a laser machining control method for performing laser machining by controlling an X-Y table with a numerical control system, comprising a method of interpreting and transferring a command program for each block, distributing a pulse to the X-Y table and changing the transferred command program, and simultaneously determining machining conditions according to the changed command program.
Since the command program is interpreted and transferred for each block and executed while it is changed, machining can be carried out while the machining conditions are changed without changing the program.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a blcok diagram of a laser machining control system according to an embodiment of the present invention.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
An embodiment of the present invention will hereinafter be described in detail with reference to the drawing.
FIG. 1 is a block diagram of a laser beam system according to for an embodiment of the present invention, wherein denoted at 1 is a keyboard for inputting machining data or the like through which an operator can input necessary machining conditions and 2 is a memory for storing the data input from a tape reader and the like. Denoted at 3 is a preprocessing arithmetic unit for reading out and interpreting the contents of a command program for each block for changing the command program to an executable form.
For example, the command program or a machining program is instructed in the following form:
______________________________________ G01 X3000 Y5000 F2000
S600 P100 Q5 CR
______________________________________
represents a cutting speed, S represents a laser output power, P
represents an output frequency of a pulse output, and Q represents a pulse
duty of an output. More particularly, the preprocessing arithmetic unit 3
reads out and interprets the machining program and changes it into
executable information.
Denoted at 4 is an instruction execution means for executing a command for one block. The command comprises a pulse distribution command applied to an X-axis and a Y-axis for moving an X-Y table, and an output condition command for determining a laser oscillation condition. The pulse distribution command is used for outputting a distribution pulse for moving the X-axis and the Y-axis. The distribution pulse is transmitted to a non-illustrated servoamplifier, where the distribution pulse is amplified to drive servomotors for moving the X-Y table. The output condition command is used for determining an output power, a frequency, and a duty rati
REFERENCES:
patent: 3969723 (1976-07-01), Kennicott
patent: 4074349 (1978-02-01), Ueda
patent: 4555610 (1985-11-01), Polad et al.
patent: 4590572 (1986-05-01), Imanishi
patent: 4706002 (1987-11-01), Fukuyama
patent: 4947315 (1990-08-01), Sokolow et al.
International Application Publication No. WO 85/01233, published Mar. 25, 1985.
Isohata Shigeru
Nagamine Tsuyoshi
Yamazaki Etsuo
Fanuc Ltd.
Hayes Gail O.
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