JPH09300088A - Handy type laser beam machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve operatability and visibility in executing laser beam machining to a work, in particular laser beam welding. SOLUTION: The machine is provided with a laser beam torch 3 by which a laser beam B oscillated from a laser beam oscillator 7 is introduced through an optical fiber 15, an emitting switch 17 which is arranged to the laser beam torch 3 and operates the laser beam oscillator 7, an image pick up device 27 which is arranged to the laser beam torch 3 and picks up a center position of the laser beam LB, a monitor 35 which is arranged to a mounting implement 5 worn by a worker and monitors the image picked up by the image pick up device 27 and a controller 41 to control the devices.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a handy type laser device for guiding a laser beam oscillated from a laser oscillator to a laser torch by an optical fiber and holding the laser torch by hand for laser processing.

[0002]

2. Description of the Related Art Conventionally, a handy type laser apparatus 101 has a work table 103 as shown in FIG. 4, for example, and a work W to be machined is placed on the work table 103. In order to perform laser welding on this work W, for example, a handy type YAG laser torch 10
5 is gripped by the hand 107H of the worker 107.

Moreover, the worker 107 has a protective helmet 11 equipped with a shield 109 for protecting the safety of work.
Laser welding is performed by wearing 1. Also, work W
A monitor 113 is provided in the vicinity of the work table 103 in order to monitor the processing state when performing laser welding. An optical fiber 1 is attached to the YAG laser torch 105 to guide the laser beam to the YAG laser torch 105.
A laser oscillator 117 is connected via 15. A control device 119 for controlling the laser oscillator 117 and the monitor 113 is provided.

With the above-described structure, the worker 10 can work on the work W to be machined which is placed and fixed on the work table 103.
7 holds the YAG laser torch 105 in the hand 107H and adjusts the tip of the YAG laser torch 105 to the processing point of the work W while observing the monitor 113. Then, the laser beam emitted from the laser oscillator 117 is transmitted to the optical fiber 1
Laser welding is performed by irradiating the work W from the YAG laser torch 105 via 15.

[0005]

By the way, in the above-mentioned conventional laser welding, the processing point of the work W and the monitor 1 are used.
Since 13 and 13 are separated, both cannot be seen by the worker 107 at the same time. Therefore, since the user shakes his / her head one by one, the work efficiency is low and the operation is very difficult.

Further, when the worker 107 looks at his / her hand, the processing point cannot be seen. Further, there is a problem that it is difficult to see unless the shield 109 is opened when the work W is set up.

An object of the present invention is to provide a handy type laser device which is improved in operability and visibility when performing laser processing on a work, especially laser welding.

[0008]

In order to achieve the above object, a handy laser device according to the present invention according to claim 1 is
A laser torch in which a laser beam oscillated from a laser oscillator is guided through an optical fiber, an emission switch provided in the laser torch for operating the laser oscillator, a processing portion of a workpiece to be processed provided in the laser torch, and the laser. An image pickup device for picking up an image of the position of the center of the beam, a monitor provided on a mounting device worn by an operator, for monitoring an image picked up by the image pickup device, and a control device for controlling the respective devices. It is characterized by.

Therefore, when performing laser processing, particularly laser welding, on a work to be processed, an operator holds the laser torch by hand and aligns the tip of the laser torch with the processing point of the work. At this time, the control device controls the monitor and the imaging device so that the image captured by the imaging device is viewed on the monitor provided on the mounting device worn by the operator so that the tip of the laser torch can easily Can be adjusted to the processing point.

After that, by pressing the emission switch,
A laser beam oscillated from a laser oscillator is guided to a laser torch through an optical fiber, and is irradiated from the tip of the laser torch toward a workpiece to perform laser processing, particularly laser welding. Thus, operability and visibility when performing laser processing, particularly laser welding, on the work are improved.

According to a second aspect of the present invention, there is provided a handy laser device according to the first aspect, wherein
The image pickup device is a CCD camera, the monitors are provided on both left and right sides, and the monitor is a liquid crystal color monitor.

Therefore, the images picked up by the CCD camera can be seen by the left and right eyes of the operator through the liquid crystal color monitors provided on both the left and right sides. Thus, the imaged image can be clearly seen in color as a stereoscopic image.

According to a third aspect of the present invention, there is provided a handy-type laser device according to the first or second aspect, wherein the controller has a see-through function and a superimpose function. is there.

Therefore, by switching to the superimpose function mode provided in the control device, the captured image can be visually recognized on the monitor. Also, by switching to the see-through function mode, the outside world can be seen directly and work setup and the like can be facilitated.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

Referring to FIG. 1, a handy type laser device 1 comprises a laser torch 3, a goggle 5 as a mounting device worn by an operator, a laser oscillator 7, and the like. The laser torch 3 includes a laser torch body 9, a nozzle 11 is attached to the lower end of the laser torch body 9, and a handle portion 13 is integrated with a side portion of the laser torch body 9.

One end of an optical fiber 15 is connected to the handle portion 13, and the laser oscillator 7 is connected to the other end of the optical fiber 15. An emission switch 17 for operating the laser oscillator 7 is provided in the handle portion 13, and a collimator lens 19 is provided in the handle portion 13.

A condenser lens 21 is provided in the laser torch body 9 and a bend mirror 23 is provided in the laser torch body 9 above the condenser lens 21. Further, at the upper end of the laser torch main body 9, a processing portion of the work W to be processed placed on the processing table 25, for example, the joining portion Ws and the YAG laser beam LB.
For example, a CCD camera 29 as an image pickup device 27 that picks up an image of the position is provided via a camera lens 31.

On both the left and right sides of the front surface of the goggles 5, a small liquid crystal color monitor 33 is provided, and the goggles 5 above the liquid crystal color monitor 33 are provided with reference to FIGS. 2 and 3. A light source 35 is provided. A prism 39 is provided below the liquid crystal color monitor 33 via a lens 37.

Referring again to FIG. 1, an NC device 41 as a control device is connected to each of the laser oscillator 7, the emission switch 17, and the liquid crystal color monitor 33.

With the above structure, when performing laser welding on the joint Ws of the work W, first, the operator holds the handle 13 of the laser torch 3 by hand and puts the goggles 5 on. Then, the laser torch 3 is moved based on the visible light from the light source 35, and the CCD camera 29 images that the center of the laser beam LB, that is, the center of the nozzle 11 is aligned with the joint Ws of the workpiece W. The image is visually confirmed by the operator through the liquid crystal color monitor 35.

That is, the operator views the images on the liquid crystal screen on the liquid crystal color monitor 33 reflected from the surface A in FIG. You can make the brain recognize a stereoscopic image by showing different images.

When the emission switch 17 is turned on in this state, the laser oscillator 7 oscillates the YAG laser beam LB and the collimator lens 19 passes through the optical fiber 15.
After that, it is bent by the bend mirror 23 and condensed by the condenser lens 21.

The YAG laser beam LB condensed by this condenser lens 21 is joined from the nozzle 11 to the joint Ws of the work W.
The laser welding is performed by irradiating the laser. During the laser welding process, the YAG laser beam L
Since the visible light in B is observed by the liquid crystal color monitor 33 through the CCD camera 29, it is possible to monitor the center of the YAG laser beam LB so as to always match the joint Ws of the work W and perform good laser welding. is there. At this time, the operation is switched to the superimpose function mode provided in the NC device 41.

Therefore, the operability and the visibility when performing the laser welding on the work W can be improved as compared with the conventional case. Also, when the mode is switched to the see-through function provided in the NC device 41, the outside world can be visually recognized as it is. In addition, the mode of the see-through function can be ensured by switching the mode in the NC device 41 only when the shutter provided in the laser oscillator 7 is closed.

The present invention is not limited to the above-described embodiment, but can be embodied in other modes by making appropriate changes. In the example of the embodiment, the goggle 5 is described as an example of the mounting device, but a helmet, glasses, headgear, or the like may be used. In addition, the signal is made wireless and the liquid crystal color monitor 33 and N
You may make it transmit / receive with the C apparatus 41. Further, it is safer to attach a YAG laser protection sheet to the outer surface of the liquid crystal color monitor 33.

[0027]

As can be understood from the examples of the embodiment as described above, according to the first aspect of the invention, the worker uses the laser torch when performing laser processing, particularly laser welding, on the work to be processed. Hold in your hand and align the tip of the laser torch with the machining point of the workpiece. At that time, the control device controls the monitor and the image pickup device, and the image picked up from the image pickup device is viewed on the monitor provided on the mounting device worn by the worker, so that the tip of the laser torch is easily processed. Aligned to a point.

After that, by pushing the emission switch,
A laser beam oscillated from a laser oscillator is guided to a laser torch through an optical fiber and irradiated from the tip of the laser torch toward a work, whereby laser processing, particularly laser welding can be performed. Thus, it is possible to improve operability and visibility when performing laser processing, particularly laser welding, on the work.

According to the second aspect of the invention, the image picked up by the CCD camera can be seen by the left and right eyes of the operator from the liquid crystal color monitors provided on the left and right sides. Thus, the imaged image can be clearly viewed in color as a stereoscopic image.

According to the third aspect of the present invention, the imaged image is visually recognized on the monitor by switching to the superimpose function mode provided in the control device. Also, by switching to the see-through function mode, the outside world can be seen directly, so that the work can be easily set up.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of a handy type laser device according to an embodiment of the present invention.

FIG. 2 is a perspective view of goggles as a mounting device.

FIG. 3 is an enlarged view of a front view of an operator wearing goggles.

FIG. 4 is an explanatory diagram of a conventional handy type laser device.

[Explanation of symbols]

 1 Handy type laser device 3 Laser torch 5 Goggles (mounting device) 7 Laser oscillator 15 Optical fiber 17 Emitting switch 25 Processing table 27 Imaging device 29 CCD camera 33 Liquid crystal color monitor 41 NC device (control device)

Claims (3)

[Claims] 1. A laser torch in which a laser beam oscillated from a laser oscillator is guided through an optical fiber, an emission switch provided in the laser torch for operating the laser oscillator, and a workpiece to be machined provided in the laser torch. An imaging device that images the position of the processing unit and the center of the laser beam, a monitor that is provided in a mounting device worn by a worker and that monitors an image captured by the imaging device, and a control device that controls each device. A handy-type laser device comprising: 2. The handheld laser device according to claim 1, wherein the image pickup device is a CCD camera, the monitors are provided on both left and right sides, and the image pickup device is a liquid crystal color monitor. 3. The handheld laser device according to claim 1, wherein the controller has a see-through function and a superimpose function.