JPS59110488A - Light working device - Google Patents

Abstract

PURPOSE:To provide a titled device which can work easily an object to be worked with laser light of a low output by the constitution wherein the laser light and ordinary light are focused to the same irradiating point of the object and the position to be worked by the laser light and the part near the same are heated. CONSTITUTION:The laser light irradiated from a laser light oscillator 1 using a CO2 laser, etc. and the ordinary light generated from light source 2 such as xenon lamp are focused by a condensing device such as a concave mirror 3, plane mirrors 4, 5 a condenser lens 6, etc. to the same spot of an object 7 to be worked. The device is so constituted that the laser light is collected at one point to be worked and that the ordinary light has a spread of a prescribed size around the focusing point of the laser light thereby heating the position to be worked and the part around the same to a specified temp. The object 7 placed on the stage 9 of a cross table 8 is subjected to working such as cutting by the laser light while it is moved two-dimensionally within the same plane by numerical control. The oscillator 1 which oscillates the laser light continuously is preferably selected for linear working and the oscillator which oscillates the laser light impulsively for working the curved part of the work, according to the shape thereof.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an optical processing apparatus that performs various processing by irradiating a workpiece with laser light.

2. Description of the Related Art Optical processing apparatuses that oscillate laser light using a laser oscillator, focus the laser light using a focusing device, and irradiate a workpiece with the laser light to perform drilling, welding, cutting, trimming, etc. are well known.

However, in optical processing equipment that processes only with laser light, the efficiency of the laser oscillator is not high enough, for example, about 20% or less, so it is necessary to use a high-power laser light. In order to improve the performance of the device, it is necessary to increase the size of the laser oscillator and the bombing light energy, which poses a problem in that the device becomes expensive.

The present invention was made from the viewpoint of Kogyoku, and uses a relatively low-output laser oscillator to configure it to have the same performance as an optical processing device using a high-output laser oscillator. The purpose of the present invention is to provide an optical processing device that is cheaper than an optical processing device that has high performance.

Therefore, the gist of the present invention is to provide a laser oscillator, a light source that generates normal light, and a condensing device that focuses the laser light and the normal light on the same irradiation point of the workpiece, The laser beam generated from the laser oscillator and the normal light generated from the light source are focused on the same irradiation point of the workpiece by a condenser, and the position of the workpiece to be processed and the vicinity thereof is heated by the normal light. The object of the present invention is to facilitate processing using a laser beam, and to configure the apparatus so that the processing can be performed using a relatively low output laser beam.

The present invention will be explained in detail below with reference to the drawings.

FIG. 1 is an explanatory diagram showing one embodiment of the present invention, and FIG. m2 is an explanatory diagram showing another embodiment of the present invention.

In Figure 1, 1 is a laser oscillator, 2 is a light source that generates normal light, 3 is a concave mirror, 4.5 is a plane mirror, 6 is a focusing lens, and 7
8 is a workpiece, 8 is a cross table, and 9 is a stage.

L'-41' Fa m device 1 uses a gas laser such as a carbon dioxide laser or an argon gas laser, a ruby laser or a
A solid-state laser such as a G laser is used for continuous oscillation in normal processing, but when high precision is required for processing, continuous oscillation and pulse oscillation are used depending on the contour of the workpiece 7 to be cut. You can use it properly. In this case, the laser oscillator 1 is configured to cause continuous oscillation in a straight line portion of the outline of the workpiece 7 to be cut, and to cause pulse oscillation or to appropriately shield light from a curved portion or a corner portion.

A xenon lamp, an arc discharge lamp, or the like is used as the light source 2 that generates normal light, and its light emitting point is positioned at the focal point of the concave mirror 3.

The concave mirror 3 converts the light radially generated from the light source 2 into parallel light beams and reflects them onto the plane mirror 5.

The plane mirror 4 reflects the laser light generated by the laser oscillator 1 and sends it to the focusing lens 6, and the plane mirror 5 reflects the light made parallel by the concave mirror 3 and sends it to the focusing lens 6.

In this case, one converging lens 6 may be provided as shown in the figure, or two sets may be provided corresponding to the plane mirrors 4 and 5, respectively.

A focusing lens 6 focuses the laser light and normal light reflected by the plane mirror 4.5 onto the workpiece 7.

Here, the focused laser beam gathers at one point on the surface of the workpiece 7 to be processed, and the normal light spreads to a predetermined size on the surface of the workpiece 7 centered on the focal point of the laser beam. Configure to have.

In this embodiment, a condenser mirror 3, a plane mirror 4.5, and a condenser lens 6 constitute a condensing device.

The workpiece 7 is attached to a workpiece stand 9 of a cross table 8 through appropriate attachment tools, and the workpiece stand 9 is moved two-dimensionally on the same plane by numerical control of a control device (not shown). .

The laser beam oscillated by the laser oscillator 1 passes through the plane mirror 4
and reaches the focusing lens 6.

On the other hand, light generated from a light source 2 is collected by a concave mirror 3, reflected by a plane mirror 5, and reaches a focusing lens 6.

The laser beam and normal light that have reached the focusing lens 6 are focused by the focusing lens 6 onto an irradiation point on the surface of the workpiece 7 .

Of the normal light and laser light collected at the irradiation point of the workpiece 7, the normal light heats the part of the workpiece 7 to be cut and the vicinity thereof to a certain temperature.

In this case, depending on the material, thickness, and surface condition of the workpiece 7, it is possible to heat the workpiece 7 to a temperature close to its melting point using only normal light.

The laser light normally perforates, grooves, or cuts the workpiece 7 heated by the light due to its high energy density.

Since the stage 9 to which the workpiece 7 is attached moves in a predetermined manner through numerical control, the workpiece 7 is cut into a desired contour.

Figure m2 is an explanatory diagram showing another embodiment of the present invention in which the structure of the condensing device and the mounting method of the workpiece are different, and the workpiece is drilled.

1 to 5 indicate the same components as shown in FIG. 1, and 7
1 is a workpiece, 9' is a stage, 10.15 is a fixed wall, 1
1 is a plane mirror, 12 and 13 are lenses, 14 is a plane mirror fixing member, and 16 is a hydraulic seal.

A plane mirror 4.5 is fixed to the plane mirror fixing member 14, and the plane mirror fixing member 14 is slidably attached to the fixed wall 15 and moves in the XX direction in the figure.

A workpiece 91 on which a workpiece 7' is fixed is slidably attached to a fixed wall 10, and is moved by a hydraulic cylinder 16 to Y in the figure.
-Move in the Y direction.

In this embodiment, a pulse oscillation CO2 laser is used as the laser oscillator 1.

The laser beam oscillated by the laser oscillator 1 passes through the plane mirror 1
1 and plane mirror 4, and converges on the irradiation point on the surface of the workpiece 7'.

Although not shown, a converging lens may be provided between the plane mirror 4.5 and the workpiece, and the converging focal length of the converging lens may be changed and controlled by appropriate means.

On the other hand, the light generated from the light source 2 is made parallel by the concave mirror 3, then becomes a parallel beam focused by the lens 12.13, reflected by the plane mirror 5, and concentrated at the irradiation point on the surface of the workpiece 7'. .

The normal light collected on the workpiece 71 heats a portion of the workpiece 7' near the laser beam irradiation point to a certain temperature.

In this case, depending on the material, thickness, and surface condition of the workpiece 7', it is possible to heat the workpiece 71 to a temperature close to its melting point using only ordinary light.

The laser beam focused on the workpiece 71 uses its high energy density to make a hole at a desired position in the workpiece 7', which has been subjected to a force of 1 by normal light.

The plane mirror fixing member I4 to which the plane mirror 4.5 is attached and the stage 9' to which the workpiece 7' is attached are moved to a predetermined position by numerical control.
' A hole is drilled at the desired position.

Since the present invention is structured like a red ball, in accordance with the present invention, a relatively low output laser oscillator is used to provide the same performance as an optical processing device using a high output laser oscillator. It is possible to provide an optical processing device that is cheaper than an optical processing device that has the performance of .

The configuration of the present invention is not limited to the embodiment of Kogyoku, and the configuration of the condenser and the method of installing the workpiece can be freely changed within the scope of the purpose of the present invention. The invention encompasses all of these.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram showing one 8% example of the present invention, and FIG. 2 is an explanatory diagram showing another embodiment of the present invention. i −−−−−−−−−−−−−・−−−−−−1−
Laser oscillator 2-----------------1-
--------Light source 3-1 that generates normal light------
−−−−−−−−−−−−−One concave mirror 4.5.11−−
----------- Single plane mirror 6.12.13------
---Lens 7.7/--------, ----One workpiece patent applicant Inoue Japax Research Institute Agent (7524) Shotabe Mogami

Claims (2)

[Claims] (1) A laser oscillator, a light source that generates normal light, and a condensing device that focuses the laser beam generated from the laser oscillator and the normal light generated from the light source onto the same irradiation point of the workpiece. An optical processing device characterized by: (2) The optical processing apparatus according to claim 1, in which the laser beam can be used by selecting pulsed or continuous laser light depending on the processing shape.