JPH0270396A - Laser processing machine - Google Patents

Abstract

PURPOSE:To realize working of other work in the course of set-up a work by providing an He-Ne laser beam switching device in which a reflecting mirror is incorporated so as to be freely movable forward/backward between plural reflecting mirrors and condensing heads in a conventional laser beam machine. CONSTITUTION:He-Ne switching devices 8A, 8B and 8C in which reflecting mirrors 9A, 9B and 9C are incorporated so as to be freely movable forward/ backward are attached between laser switching devices 3A, 3B and 3C and condensing heads 6A, 6B and 6C, respectively. In such a constitution, in the case of replacing, for instance, a work 5a and executing set-up such as focusing, etc., a reflecting mirror 3a is drawn back and the reflecting mirror 9A of the He-Ne laser device 8A is placed on an optical path of a laser beam 2, and an He-Ne laser beam is condensed by a condensing mirror 7A and made incident on the work 5a. During this time, the laser beam 2 can be sent to a working table 5B by a reflecting mirror 3b, working of a work 5b and/or a work 5c can be executed, and the operation rate of the equipment is improved.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a laser processing device, and particularly to an optical axis adjustment device.

(Prior Art) Fig. 3 shows a conventional laser beam transmission path equipped with a plurality of processing tables. After passing through the switching device 3A, the reflecting mirror 3B passes through the movably housed laser beam switching device 3B, is bent by the reflecting mirror 11, is focused by the focusing mirror 7C housed in the focusing head 6C, and is processed. The workpiece 5C on the table 5C is irradiated with light.

When processing the workpiece 5a on the processing table 5A, the laser beam 2 is transmitted to the condensing mirror 7A by lowering the reflection@3a onto the laser beam path as shown in FIG. 3 by a command from a control device (not shown). When processing the workpiece 5b on the processing table 5B, the reflecting mirror 3a is retracted and the reflecting mirror 3b is placed on the laser beam path to transmit the laser beam to the condensing mirror 7B.

Furthermore, a He-Ne laser switching device 4 equipped with a He-Ne laser oscillator 7 is attached to the output side of the laser oscillator 1, and inside this He-Ne laser switching device 4,
A reflecting mirror 4a that is moved by a control device (not shown) is attached.

In addition, in FIG. 3, in a laser processing apparatus that processes works 5a, 5b, and 5C at the same time, reflecting mirrors 3a, 3
Another method is to use a semi-transparent mirror for b.

In the laser processing apparatus configured as described above, when focusing the laser beam on the groove line of the work 5a to be welded on the processing table 5A, the emission of the laser beam 2 from the laser oscillator 1 is stopped, The reflected Xi 4 a is sent to the optical path of the laser beam 2, and the HeNe laser beam 7a is directed to the workpiece 5.
Perform by applying to a.

If the workpiece 5b on the adjacent processing table 5B is to be replaced with another workpiece, this is done after the positioning of the workpiece 5a is completed.

(Problem to be Solved by the Invention) However, at this time, in order to project the reflected ff1fi 4 a into the optical path of the laser beam 2, the oscillator 1 is stopped as described above, but the transmission of the laser beam 2 is stopped using a dump cone (not shown) or the like. The machine must be stopped and machining on other machining tables must also be stopped. This is also the case when attaching the workpiece 5C on the processing table 5C, and the operating rate of the equipment decreases especially in operations that require a large number of setups such as welding or heat treatment and take a long time.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to obtain a laser processing apparatus that can increase the operating rate of a laser processing apparatus equipped with a plurality of processing tables.

[Structure of the Invention] (Means and Effects for Solving the Problems) The present invention bends laser light emitted from a laser oscillator with a plurality of reflecting mirrors and transmits it to a condensing head, thereby collapsing a laser beam onto a plurality of workpieces on processing tables. In a laser processing device that processes a workpiece by irradiating the workpiece, a He-Ne laser beam switching device in which a reflecting mirror is housed so as to be able to move forward and backward is provided between the plurality of reflecting mirrors and each focusing head, and the He-Ne laser beam switching device is installed between the plurality of reflecting mirrors and each of the focusing heads. This is a laser processing device that can process workpieces on other processing tables, increasing the operating rate of the equipment.

(Example) Hereinafter, an example of the laser processing apparatus of the present invention will be described with reference to the drawings. However, parts that overlap with Figure 3 are omitted.

In FIG. 1, between the laser switching device 3A and the focusing head, there is a reflecting mirror 9 that moves forward and backward according to commands from a control device (not shown).
A He-Ne switching device 8A containing A is installed, and similarly between the laser switching device 3B and the focusing head 6B and the reflecting mirror 1.
There is also a He-Ne switching device 88.8 between 1 and the focusing head 6C.
C is installed.

In the laser processing apparatus configured as described above, when changing the workpiece 5a and making preparations such as focusing, the reflector 3a is retracted and the reflection 19A of the He-Ne laser device is brought out into the optical path of the laser beam 2. -Ne laser light is focused by a condensing mirror 7A and applied to the workpiece 5a. Then, during this time, the laser beam 2 can be sent to the processing table 5B by the reflection mirror 3b, and the work 5b and/or the work 5C can be processed.

Similarly, when replacing the workpiece 5b and setting up a new workpiece, the reflector 3b should be retracted and the mirror 3b should be moved away! 149B to the optical path.

Therefore, the operating rate of the laser processing apparatus can be particularly increased in operations such as welding and heat treatment that require a large number of setup times.

FIG. 2 shows another embodiment of the laser processing machine of the present invention, in which a storage chamber 6a is provided on the side surface of the focusing head 6A, and inside this storage ff1ea, a focusing mirror (not shown) and a driving device 15 are provided at the bottom. A semiconductor laser device 13 that emits a laser beam 14 in the visible region is housed so as to be movable left and right by a control device (not shown).

In this case as well, as in FIG. 1, it is possible to align the workpiece on the table during machining with a certain table.

In this case, a light emitting diode may be used instead of the semiconductor laser device to achieve miniaturization.

In the above embodiment, a laser beam switching device is used to branch the laser beam, but a semi-transmissive mirror may be used instead as in the conventional case.

[Effects of the Invention] As described above, according to the laser processing device of the present invention, the laser processing device transmits the laser beam emitted from the laser oscillator to the plurality of processing tables via the plurality of reflecting mirrors and the focusing head. Against! ) A He-Ne laser beam switching device that emits visible light and houses a reflecting mirror that can move forward and backward is installed between the mirror and the condensing head. It is possible to install 1q of laser processing equipment that can perform processing and increase the equipment operating rate.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing an embodiment of the laser processing apparatus of the present invention,
FIG. 2 is a detailed view of main parts showing another embodiment of the laser processing apparatus of the present invention, and FIG. 3 is a diagram showing a conventional laser processing apparatus. 1...Laser oscillator 2...Laser beams 3a, 3b, 3C=-anti-QJ mirrors 5A, 5B, 5
C...Processing table

Claims (1)

[Scope of Claims] A laser processing device that processes a workpiece by bending a laser beam emitted from a laser oscillator by a plurality of reflecting mirrors and transmitting it to a focusing head, and irradiating the workpiece onto a plurality of processing tables, A laser processing apparatus characterized in that a He-Ne laser beam switching device in which a reflecting mirror is housed so as to be movable back and forth is provided between the plurality of reflecting mirrors and the focusing head.