JP2594868Y2 - Guide light mirror holder - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a guide light mirror holder, and more particularly, to a guide light mirror for supporting a guide light mirror for adjusting an optical path of guide light emitted for alignment of an optical axis of an optical device in a freely controllable manner. Regarding the holder.

[0002]

2. Description of the Related Art Generally, in optical axis alignment performed at the time of assembling, maintenance, and inspection of optical equipment, for example, a laser device irradiates a beam-like guide light composed of visible light or the like.
The optical axes of the components of the optical apparatus are matched with the guide light, and the entire optical axis is aligned. In this case, in order to match the optical path of the guide light in advance with a predetermined position where the optical device is to be installed, the heavy laser device is fixedly disposed, and the light guide supported by the guide light mirror holder is light. The optical path of the reflected guide light is moved and adjusted by controlling the attitude of the optical mirror.

The optical axis alignment will be described with reference to a YAG laser beam machine 1 which is a kind of optical equipment shown in FIG.

[0004] In a YAG laser beam machine 1 which is a kind of optical equipment, a YAG rod 4 is provided between a total reflection mirror 2 and an output mirror 3, and an atom in the YAG rod 4 is irradiated by light from an excitation lamp 5. Is excited, and then the laser light La is emitted through the output mirror 3. Further, the laser light La can be branched and output into a plurality of parts through the branch mirror 6 and the incident unit 7. The laser beam La can be applied to the workpiece 10 from each of the incident units 7 through the optical fiber 8 and the emitting unit 9 in order. Between the YAG rod 4 and the total reflection mirror 2 and the output mirror 3, there are provided shutters 11 for maintaining safety, respectively. A power monitor 12 for checking an output state is provided between the output mirror 3 and the branch mirror 6.

In order to align the optical axis of the optical system of the YAG laser beam machine 1 formed as described above, a beam-shaped guide light Lb from a laser generator 13 such as a He-Ne laser for optical axis alignment is used. Irradiate two guide light mirrors 1
The optical path of the guide light Lb is made to coincide with a predetermined position where the optical system of the YAG laser processing machine 1 is installed by using the light guides 4 and 14. Thereafter, the optical axes of the components of the optical system of the YAG laser beam machine 1 are made to coincide with the optical path of the guide light Lb, and then the components are fixed to a predetermined portion of the main body of the YAG laser beam machine 1.

The guide light mirror 14 is supported by a guide light mirror holder 15 shown in FIGS.
That is, in this guide light mirror holder 15,
The guide light mirror 14 is formed on the upright wall portion 16a of the substantially L-shaped holder body 16 so as to freely control the attitude. The guide light mirror 14 is formed in a substantially square shape, and is fixed to the front side of a mirror support plate 17 also formed in a substantially square shape by bonding or the like. One end of each of two tension springs 18, 18 is fixed to the back side of the mirror support plate 17 with a set screw 19, respectively.
An intermediate portion of each tension spring 18 passes through a through hole 20 formed in the vertical wall portion 16a, and a hook portion 18a at the other end is fixed to a pin 21.
The guide light mirror 14 and the mirror support plate 17 are connected to the upright wall 16a. One of the guide light mirrors 14 is provided between the front surface of the standing wall portion 16a and the rear surface of the mirror support plate 17.
A fulcrum ball 22 is interposed at the two vertices (the lower left position in FIG. 6). Two position adjusting screws 23a and 23b penetrate the upright wall 16a toward the mirror support plate 17 in accordance with the positions of the vertices on both sides of the fulcrum where the fulcrum ball 22 of the guide light mirror 14 is disposed. It is screwed. The tips of the two position adjusting screws 23a and 23b are formed in a hemispherical shape. One position adjusting screw 23a is in contact with the flat back surface of the mirror support plate 17, and the other position adjustment screw 23b is connected to the mirror support plate. 17 is in contact with the V-shaped groove 24. The guide light mirror holder 15 is fixed at a predetermined position with the horizontal portion 16b of the holder main body 16.

The adjustment of the optical path of the guide light Lb by the guide light mirror holder 15 formed as described above is performed by adjusting the screwing amounts of the two position adjusting screws 23a and 23b. That is, the fulcrum ball 22 and the two position adjusting screws 23a, 23
When the screw amounts of the two position adjusting screws 23a and 23b are changed with respect to the mirror support plate 17 pressed by the support b, the attitude of the mirror support plate 17 is changed with the fulcrum ball 22 as a fulcrum, and the guide light Lb The angle of incidence and the angle of reflection with respect to the guide light mirror 14 are changed, and the optical path of the guide light Lb is changed in the X-axis direction and the Y-axis direction in the figure.

[0008]

However, in the above-described conventional guide light mirror holder 15, the fulcrum ball 22 serving as a fulcrum for changing the attitude of the guide light mirror 14 is located at the apexes of the four sides of the guide light mirror 14. In addition, since the point of incidence and reflection of the guide light Lb is substantially at the center of the mirror surface of the guide light mirror 14 distant from the fulcrum, any one of the X-axis direction and the Y-axis direction is changed. When the screwing amount of one of the two position adjusting screws 23a and 23b is adjusted to make the guide light Lb incident on the mirror surface of the guide light mirror 14, the X-axis direction and the Y-axis direction change inevitably. Since the movement amount of the point is large, there is a disadvantage that both the X-axis direction and the Y-axis direction must always be adjusted. Therefore, the adjustment work becomes extremely complicated, and especially the guide light mirror holder 15
In the case where a plurality of are installed, there is a disadvantage that the adjustment takes a very long time. Further, in the conventional example,
The operation of inserting the stop pin 21 into the hook portion 18a of the two tension springs 18 must be performed while pulling the tension springs 18, and is extremely troublesome.

The present invention has been made in view of these points, and it is possible to precisely change the optical path of the guide light only in one of two orthogonal directions, and it is extremely easy to adjust the optical path. It is another object of the present invention to provide a guide light mirror holder that can be easily assembled.

[0010]

In order to achieve the above object, a guide light mirror holder of the present invention is a guide light mirror holder for supporting a guide light mirror in a freely controllable manner. the support shaft is mounted, with is perpendicular to the support shaft a mirror of the guide mirror, Ru is matched with the axis of the support shaft center of the mirror
A mirror support plate for supporting the guide light mirror is mounted on the support shaft, and the guide light mirror is reciprocated in two orthogonal directions passing through the center of the mirror surface in a direction parallel to the support shaft. the position adjusting mechanism allowed to provided, said mirror
Between the support plate and the holder body,
At the position facing the straight line passing through the two position adjustment mechanisms,
A bullet for making the position adjusting mechanism always contact the mirror support plate.
It is characterized by being provided with one spring for applying a force .

[0011]

According to the present invention, the angle of the guide light mirror can be changed and adjusted by using the center of the mirror surface as a fulcrum, and the optical path of the guide light reflected at the center point of the mirror surface is perpendicular to the two axial directions. It can be accurately changed only in one axial direction.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

1 to 3 show one embodiment of the present invention.
The same parts as those in the related art are denoted by the same reference numerals.

In the guide light mirror holder 25 of the present embodiment, the guide light mirror 14 is formed on the upright wall 26a of the substantially L-shaped holder main body 26 so as to freely control the posture. A spherical slide bearing 28 is fitted with an annular fixing portion 28a into a bearing mounting hole 27 formed at the center in the width direction of the upper portion of the standing wall portion 26a, and is fixed by a fixing screw 29. A support bolt 30 serving as a support shaft for supporting the guide light mirror 14 is fixedly penetrated to the annular movable portion 28b of the spherical plain bearing 28 with its front end portion facing the front surface of the vertical wall portion 26a. A mirror support plate 31 having the guide light mirror 14 fixed to the front surface is fixed to the tip of the support bolt 30 so that the center of the mirror surface of the guide light mirror 14 matches the axis of the support bolt 30. .
Thereby, the mirror surface of the guide light mirror 14 and the support bolt 3
The mirror support plate 31 is supported at a predetermined distance from the front surface of the vertical wall portion 26a.
A spacer 32 is fitted between the mirror support plate 31 of the support bolt 30 and the upright wall 26a. Further, positions in two orthogonal directions passing through the center of the mirror surface of the guide light mirror 14,
That is, in this embodiment, a position adjusting mechanism for reciprocating the guide light mirror 14 in a direction parallel to the support bolt 30 is formed at each of the upper X-axis direction and the right Y-axis direction in FIG. The position adjusting screws 33a and 33b are threaded through the upright wall 26a toward the mirror support plate 31. The tips of both position adjusting screws 33a, 33b are formed in a hemispherical shape,
One position adjustment screw 33a is in contact with the flat back surface of the mirror support plate 31, and the other position adjustment screw 33b is in contact with a V-shaped groove 34 formed in the mirror support plate 31. The mirror support plate 31 is provided at the lower left portion of the support bolt 30 between the mirror support plate 31 and the vertical wall portion 26a.
A compression spring 35 for providing elasticity for constantly contacting the position adjustment screws 33a and 33b is interposed. Also,
The guide light mirror holder 25 is provided on the horizontal portion 2 of the holder main body 26.
6b is fixed to a predetermined position.

Next, the operation of this embodiment will be described.

The guide light mirror holder 25 thus formed is installed at a position where the guide light Lb emitted from the laser generator 13 enters and reflects at the center of the mirror surface of the guide light mirror 14.

The adjustment of the optical path of the guide light Lb is performed by 2
This is performed by adjusting the screw-in amounts of the position adjusting screws 33a and 33b. That is, with respect to the mirror support plate 31 pressed by the two position adjusting screws 33a, 33b by the elastic force of the compression spring 35, the two position adjusting screws 33a,
When the amount of screw 33b is changed, the attitude of the mirror support plate 31 is changed with the spherical slide bearing 28 as a fulcrum, the incident angle and the reflection angle of the guide light Lb with respect to the guide light mirror 14 are changed, and the guide light Lb is changed. Are changed in the X-axis direction and the Y-axis direction in the figure.

In particular, in the present embodiment, the center of the mirror surface of the guide light mirror 14 is aligned with the centers of the spherical slide bearing 28 and the support bolt 30, and the guide light Lb is focused on the center of the mirror surface of the guide light mirror 14. When the amount of one of the position adjustment screws 33a and 33b is changed, the optical path of the guide light Lb is changed to X.
The variation can be limited to one of the axial direction and the Y-axis direction. In particular, by suppressing the amount of angle change during the adjustment of the optical path of the guide light Lb, the optical path adjustment in one direction can be performed with higher accuracy.

Therefore, the operation of adjusting the optical path of the guide light Lb can be performed extremely easily, and the operation of adjusting the optical path can be also extremely easily performed when a plurality of guide light mirrors are used.

Further, in the present invention, since the compression spring 35 is used as compared with the conventional example, the assembling work becomes very easy.

The present invention is not limited to the above embodiment, but can be modified as needed.

[0022]

As described above, since the guide light mirror holder of the present invention is constructed and operates, the angle of the guide light mirror can be changed and adjusted with the center of the mirror surface as a fulcrum, and the center point portion of the mirror surface can be adjusted. The optical path of the guide light entering and reflected from the mirror can be accurately changed only in one of two orthogonal directions, and the adjustment of the optical path becomes extremely easy and the assembly becomes easy. .

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing one embodiment of a guide light mirror holder of the present invention.

FIG. 2 is a front view of the guide light mirror holder of the present invention.

FIG. 3 is a left side view of FIG. 2;

FIG. 4 is a configuration diagram showing an outline of an optical system in a YAG laser processing machine.

FIG. 5 is an exploded perspective view showing a conventional guide light mirror holder.

FIG. 6 is a view similar to FIG. 3, showing a conventional guide light mirror holder;

[Explanation of symbols]

 14 Guide light mirror 25 Guide light mirror holder 26 Holder body 28 Spherical plain bearing 30 Support bolts 33a, 33b Position adjusting screw 35 Compression spring

Claims (1)

(57) [Scope of request for utility model registration] 1. A guide light mirror holder for supporting a guide light mirror in a freely controllable manner, wherein a support shaft is mounted on a holder body via a spherical slide bearing, and a mirror surface of the guide light mirror is orthogonal to the support shaft. and so that is matched with the axis of the support shaft center of the mirror
A position adjusting mechanism for attaching a mirror support plate supporting the guide light mirror to the support shaft, and reciprocating the guide light mirror in two directions orthogonal to the center of the mirror surface in a direction parallel to the support shaft. provided, between the mirror support plate and the holder body, said support shaft
A position facing a straight line passing through the two position adjustment mechanisms.
The position adjustment mechanism is always in contact with the mirror support plate
A guide light mirror holder comprising a single spring for providing elasticity to be applied.