JPS6378584A - Laser processing machine - Google Patents

Abstract

PURPOSE:To contrive to automatically execute the injection work of laser gas by a method wherein if the time corresponded to an operating start reference time comes, the feed operation of the laser gas to a laser oscillating tube is so contrived as to be started on the basis of a gas injection control program. CONSTITUTION:A memory means (system program memory) 5, wherein a laser gas injection control program LGP which indicates the feed operation of laser gas 19 is stored, is provided and the feed starting time of the laser gas 19 to a laser oscillating tube 11 is decided on the basis of an operating start reference time which is inputted. A signal SN from such a time metering means as a timer 6 which outputs the prescribed signal SN is received, the laser gas injection control program LGP is read out from the memory means 5 and the feed operation of the laser gas 19 is executed. Thereby, the feed operation of the laser gas 19 can be conducted conforming to the prescribed processing start reference time without asking an operator. As a result, this way can contribute to the improvement of processing efficiency.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Industrial Application Field The present invention relates to a laser processing method that can automatically inject a laser gas such as helium gas into a laser oscillation tube prior to laser processing. Regarding machines.

(b), Conventional technology Usually, in a laser processing machine, it is necessary to inject laser gas into the laser oscillation tube before processing.
This work was carried out by the workers themselves.

(C) 0 Problems to be Solved by the Invention However, since this work usually takes about 30 minutes, there is a problem in that the machining work cannot be performed during that time, and the start of the machining work is delayed accordingly.

SUMMARY OF THE INVENTION An object of the present invention is to provide a laser processing machine that can automatically perform a laser gas injection operation in order to eliminate the above-mentioned drawbacks.

(d) Means for solving the zero problem, that is, the present invention provides a laser gas injection control program (LGP) that instructs the operation of supplying the laser gas (19) from the laser gas storage section (9) to the laser oscillation tube (11). A memory means (5) is provided to store the operation start reference time (T
A time input means (7) is provided for inputting the operation start reference time (TM), and the time to start supplying the laser gas (19) to the laser oscillation tube (11) is determined based on the input operation start reference time (TM). A timer (6) that outputs a signal (SN) is provided,
Upon receiving the signal (S N l ) from the timer (6), the laser gas injection control program (LG
P) and executes the laser gas injection control program (
gas supply control means (LGr') for supplying the laser gas (19) to the laser oscillation tube (11);
2, 3, 12, 16).

Note that the numbers in parentheses are for convenience and indicate corresponding elements in the drawings, and therefore, this description is not limited to the descriptions on the drawings. The following r (el
The same applies to the column ``, action''.

(e) 0 effect With the above-described configuration, the present invention stores laser gas based on the laser gas injection control program (LGP) when the time corresponding to the operation start reference time (TM) inputted from the time input means (7) comes. Part (9) to laser oscillation tube (1
1) so that the operation of supplying the laser gas (19) to the laser gas (19) is started.

(f), Example Embodiments of the present invention will be described below based on the drawings.

FIG. 1 is a control block diagram showing an embodiment of a laser processing machine according to the present invention, and FIG. 2 is a flow chart showing an example of a laser gas injection control program.

As shown in FIG. 1, the laser processing machine 1 has a main control section 2, and the main control section 2 includes an input/output control section 3, a system program memory 5, a timer 6, and data input/output means. A constituting keyboard 7 is connected.

On the other hand, the laser processing machine 1 has a laser gas storage section 9 such as a gas cylinder for storing laser gas, and a laser oscillation tube 11 is connected to the laser gas storage section 9 via a laser gas supply pipe 10.

A solenoid valve 1 is installed in the middle of the laser gas supply pipe 10.
2. A flow layer sensor 13 and a flow layer regulator 15 are connected to the input/output control section 3, and a vacuum pump 16 and a pressure gauge 17 are also connected to the laser oscillation tube 11. It is connected to the input/output control m3.

Since the laser processing machine 1 has the above-described configuration, at an appropriate time before the start of processing, for example in the evening of the previous day, the operator uses the keyboard 7 to instruct the main control section 2 to control the next laser processing machine 1. Enter the scheduled time TM for starting the machining work. The input scheduled time TM is stored in the memory of the timer 6 via the main control unit 2, and the timer 6 compares the current time with the scheduled time TM to determine whether the current time is relative to the scheduled time TM. It is determined whether the time TN required for the gas injection operation into the laser oscillation tube 11 has reached the previous time.

That is,. If the scheduled time TM is 9:00 a.m. and the time TN required for the gas injection operation is 30 minutes, the timer 6 determines whether the current time has reached 8:30 a.m.

The timer 6 determines whether the current time is the time TNt required for the gas injection operation into the laser oscillation tube 11 with respect to the scheduled time TM.
! If it is determined that the previous time has been reached, the signal S
N is output to the main control unit 2, and the main control unit 2 receives this,
A laser gas injection control program LGP8 is read out from the system program memory 5, and a laser gas injection operation is started based on the laser gas injection control program LGP.

That is, the main controller 2 executes the laser gas injection control program LG.
In step S1 of P, the vacuum pump 16 is driven via the input/output control section 3 to bring the inside of the laser oscillation tube 11 into a vacuum state. If it is determined in step S2 that the interior of the laser oscillation tube 11 is in a vacuum state based on the measurement value of the pressure gauge 17, the process proceeds to steps S3 and S4, where the solenoid valve 12 is opened and the laser gas storage section 9 is opened. The laser gas 19 is supplied to the laser oscillation tube 11, and the drive of the vacuum pump 16 is stopped. The flow rate of the laser gas 19 supplied from the laser gas storage section 9 to the laser oscillation tube 11 is adjusted by the flow rate sensor 13 and the flow rate regulator 15 in steps S5 and S6 so that the flow rate is always constant. Moreover, the pressure of the laser gas 19 inside the laser oscillation tube 11 is constantly measured by the pressure gauge 17, and when it is determined that the pressure value inside the laser oscillation tube 11 reaches a predetermined pressure in step S7, In step S8, the laser oscillation tube 1
1 is ready to start, is notified to the operator by an appropriate means such as a lamp.

The execution of the laser gas injection control program LGP is thus completed, but at the time when the laser gas 19 is supplied to the laser oscillation tube 11 by the laser gas injection control program LGP to a state where the laser oscillation tube 11 can be started, the time reaches the scheduled time TM, and the machining operation can be started immediately from the scheduled time TM.

In addition, although the above-mentioned embodiment described the case where the time input from the keyboard 7 is the scheduled time TM to start processing, the input time is not limited to the scheduled time TM to start processing, and the time input is not limited to the scheduled time TM to start supplying the laser gas 19. Of course, the time may also be input directly.

(g) 8 Effects of the Invention As described above, according to the present invention, the laser gas injection control program LG instructs the operation of supplying the laser gas 19 from the laser gas storage section 9 to the laser oscillation tube 11.
A memory means such as a system program memory 5 storing the program P is provided, and a time input means such as a keyboard 7 is provided for inputting an operation start reference time such as a scheduled time TM. A timing means such as a timer 6 is provided which determines when the supply of laser gas 19 to the oscillation tube 11 is started and outputs a predetermined signal SN, and upon receiving the signal SN from the timing means, the laser gas injection control program is stored in the memory means. A main control section 2, an input/output control section 3, a vacuum pump 16, and a solenoid valve 12 that read the LGP and perform an operation of supplying the laser gas 19 to the laser oscillation tube 11 based on the laser gas injection control program LGP.
Since the gas supply control means such as It is possible to start processing immediately on the laser oscillation tube 11 to which the laser gas 19 has already been supplied, without having to perform the operation of supplying the laser gas 19 each time prior to processing, which can contribute to improving processing efficiency.

[Brief explanation of the drawing]

FIG. 1 is a control block diagram showing an embodiment of a laser processing machine according to the present invention, and FIG. 2 is a flowchart showing an example of a laser gas injection control program. 1...Laser processing machine 2...Gas supply control means (main control section) 3...Gas supply control means (input/output control section) 5-...Memory means (system program memory) 6...・Clocking means (timer) 7... Time inputting means (keyboard) 9... Laser gas storage section 11... Laser oscillation tube 12... Gas supply control means (solenoid valve) 16... ...Gas supply control means (vacuum pump) 19.
...Laser gas LGP...Laser gas injection control program TM
..... Operation start reference time (scheduled time) SN ....
・Signal applicant Yamazaki Mazatuku Co., Ltd. agent Patent attorney Phase 1) Shinji (and 1 other person) Figure 2

Claims (1)

[Scope of Claims] A laser processing machine having a laser gas storage section for storing laser gas and a laser oscillation tube, and supplying laser gas from the laser gas storage section to the laser oscillation tube during operation of the laser oscillation tube, comprising: a laser gas storage section; a memory means storing a laser gas injection control program for instructing a laser gas supply operation from the part to the laser oscillation tube; a time input means for inputting an operation start reference time; and a time input means for inputting an operation start reference time; Determine when to start supplying laser gas to the laser oscillation tube,
A clock means for outputting a predetermined signal is provided, and upon receiving the signal from the clock means, a laser gas injection control program is read from the memory means, and a laser gas supply operation to the laser oscillation tube is performed based on the laser gas injection control program. A laser processing machine configured with a gas supply control means for processing.