JPS6227343Y2 - - Google Patents
Info
- Publication number
- JPS6227343Y2 JPS6227343Y2 JP1982173301U JP17330182U JPS6227343Y2 JP S6227343 Y2 JPS6227343 Y2 JP S6227343Y2 JP 1982173301 U JP1982173301 U JP 1982173301U JP 17330182 U JP17330182 U JP 17330182U JP S6227343 Y2 JPS6227343 Y2 JP S6227343Y2
- Authority
- JP
- Japan
- Prior art keywords
- protective cover
- laser beam
- transmission device
- laser light
- gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Description
【考案の詳細な説明】 〔考案の技術分野〕 この考案はレーザ光伝送装置の改良に関する。[Detailed explanation of the idea] [Technical field of invention] This invention relates to improvement of a laser beam transmission device.
一般に、レーザ発振器によつて得られるレーザ
光は指光性のよい光であつて、集光レンズで集光
することによつて高い出力密度のものが得られる
ので、被加工物の孔明け、溶接、切断、焼入れな
ど広く各種の加工工程に利用されている。
In general, the laser light obtained by a laser oscillator has good directivity, and a high output density can be obtained by condensing the light with a condensing lens. It is widely used in various processing processes such as welding, cutting, and hardening.
即ち、従来のレーザ光伝送装置は第１図に示す
ように構成され、レーザ発振器１から発射された
レーザ光２は、保護と安全のためのパイプ状保護
カバー３を通してビーム折曲げ用全反射ミラー４
へ導かれる。そして、この全反射ミラー４によ
り、レーザ光２は90゜折り曲げられ、集光レンズ
５に導かれる。この集光レンズ５でレーザ光２は
集光され、加工ノズル６を通過して、テーブル７
上に置かれた被加工物８に照射される。 That is, the conventional laser beam transmission device is constructed as shown in FIG. 4
be led to. The laser beam 2 is bent by 90 degrees by the total reflection mirror 4 and guided to the condenser lens 5. The laser beam 2 is condensed by the condenser lens 5, passes through the processing nozzle 6, and passes through the table 7.
The workpiece 8 placed above is irradiated.
上記のようなレーザ光伝送装置において、平均
パワー密度が２×102W／cm2以上であるCO2レー
ザ光を５ｍ以上伝送する場合、保護カバー３内の
空気等の気体がCO2レーザ光を吸収して温度が上
昇し、保護カバー３内で温度差が生じる。このよ
うに温度分布が生じた保護カバー３内では、CO2
レーザ光は気体のレンズ効果により、屈折現象を
起し、CO2レーザ光の強度分布が変形して伝送さ
れる。この結果、例えば切断加工の場合、集光ス
ポツトの径が変化したり、位置が変化し、正常な
切断ができなくなる。
In the above laser beam transmission device, when transmitting a CO 2 laser beam with an average power density of 2×10 2 W/cm 2 or more for 5 m or more, the gas such as air inside the protective cover 3 may cause the CO 2 laser beam to As a result, the temperature rises and a temperature difference occurs within the protective cover 3. Inside the protective cover 3 where the temperature distribution has occurred in this way, CO 2
Laser light causes a refraction phenomenon due to the lens effect of the gas, and the intensity distribution of the CO 2 laser light is transformed before being transmitted. As a result, in the case of cutting, for example, the diameter or position of the condensing spot changes, making it impossible to cut normally.
この考案の目的は、平均パワー密度が２×
102W／cm2以上のCO2レーザ光を５ｍ以上にわた
つて強度分布が変形せずに伝送することができる
レーザ光伝送装置を提供することである。
The purpose of this invention is that the average power density is 2×
An object of the present invention is to provide a laser beam transmission device capable of transmitting a CO 2 laser beam of 10 2 W/cm 2 or more over a distance of 5 m or more without deforming the intensity distribution.
この考案は、レーザ発振器から出た平均パワー
密度が２×102W／cm2以上のレーザ光が全反射ミ
ラーを介して５ｍ以上離れた被加工物に至る光路
に、保護カバーを設けてなるレーザ光伝送装置に
おいて、上記保護カバー内の雰囲気をドライにし
たレーザ光伝送装置である。
This idea consists of providing a protective cover on the optical path of a laser beam with an average power density of 2 x 10 2 W/cm 2 or more that is emitted from a laser oscillator and reaches a workpiece that is more than 5 meters away via a total reflection mirror. The present invention is a laser beam transmission device in which the atmosphere inside the protective cover is kept dry.
この考案のレーザ光伝送装置は第２図に示すよ
うに構成され、従来例（第１図）と同一箇所には
同一符号を付すことにする。即ち、レーザ発振器
１から出たレーザ光２が全反射ミラー４を介して
被加工物８に至る光路に設けられた例えばパイプ
状の保護カバー３には、略平行にパイプ状の風胴
９が連結されている。この風胴９内にはフアン１
０が設けられ、モータ１１により駆動される。更
に風胴９内には、外部からN2ガス１２が導入さ
れる。
The laser beam transmission device of this invention is constructed as shown in FIG. 2, and the same parts as in the conventional example (FIG. 1) are given the same reference numerals. That is, for example, a pipe-shaped protective cover 3 provided on the optical path where the laser beam 2 emitted from the laser oscillator 1 reaches the workpiece 8 via the total reflection mirror 4 has a pipe-shaped wind cylinder 9 approximately parallel thereto. connected. Inside this wind body 9 is a fan 1.
0 is provided and driven by a motor 11. Furthermore, N 2 gas 12 is introduced into the wind barrel 9 from the outside.
さて動作時には、平均パワー密度が２×
102W／cm2以上であるCO2レーザ光を５ｍ以上離
れた位置にある被加工物８の表面まで伝送する過
程で、保護カバー３内で空気等の気体が暖められ
るが、このとき風胴９内に例えばN2ガス１２が
導入され、フアン１０により保護カバー３内から
きた気体と共に撹拌されて矢印のように循環し、
その結果、気体は乾燥することになる。 Now, during operation, the average power density is 2×
In the process of transmitting CO 2 laser light with a power of 10 2 W/cm 2 or more to the surface of the workpiece 8 located at a distance of 5 m or more, gas such as air is warmed within the protective cover 3. For example, N2 gas 12 is introduced into the shell 9, stirred together with the gas coming from inside the protective cover 3 by the fan 10, and circulated as shown by the arrow.
As a result, the gas becomes dry.
この考案によれば、保護カバー３内の雰囲気を
ドライにしているので、長距離伝送時に起るCO2
レーザ光２の変形が防止され、被加工物８に対す
る正常な加工が実施できる。
According to this invention, since the atmosphere inside the protective cover 3 is kept dry, CO 2 generated during long-distance transmission is reduced.
Deformation of the laser beam 2 is prevented, and the workpiece 8 can be processed normally.
尚、第３図と第４図はこの考案の変形例を示し
たもので、上記実施例と同様効果が得られる。即
ち、第３図は、上記実施例のような風胴９やN2
ガス１２を用いないで、保護カバー１３の材料と
して水分を吸収し易い材料（例えば木材など）を
使用し、保護カバー１３内の雰囲気をドライにし
ている。 Incidentally, FIGS. 3 and 4 show a modification of this invention, and the same effects as in the above embodiment can be obtained. That is, FIG. 3 shows the wind cylinder 9 and N 2
Instead of using gas 12, the protective cover 13 is made of a material that easily absorbs moisture (for example, wood) to keep the atmosphere inside the protective cover 13 dry.
又、第４図も風胴やN2ガスを用いることな
く、保護カバー３内に１個以上の乾燥材１４を配
設することにより、雰囲気をドライにしている。 Also, in FIG. 4, the atmosphere is kept dry by disposing one or more drying materials 14 inside the protective cover 3 without using a wind cylinder or N2 gas.
第１図は従来のレーザ光伝送装置を示す概略構
成図、第２図はこの考案の一実施例に係るレーザ
光伝送装置を示す概略構成図、第３図及び第４図
はこの考案の変形例を示す概略構成図である。
１……レーザ発振器、２……レーザ光、３……
保護カバー、４……全反射ミラー、５……集光レ
ンズ、６……加工ノズル、７……テーブル、８…
…被加工物、９……風胴、１０……フアン、１１
……モータ、１２……N2ガス、１３……保護カ
バー、１４……乾燥材。
FIG. 1 is a schematic configuration diagram showing a conventional laser beam transmission device, FIG. 2 is a schematic configuration diagram showing a laser beam transmission device according to an embodiment of this invention, and FIGS. 3 and 4 are modifications of this invention. FIG. 2 is a schematic configuration diagram showing an example. 1... Laser oscillator, 2... Laser light, 3...
Protective cover, 4... Total reflection mirror, 5... Condensing lens, 6... Processing nozzle, 7... Table, 8...
...Workpiece, 9...Wind cylinder, 10...Fan, 11
... Motor, 12 ... N2 gas, 13 ... Protective cover, 14 ... Drying material.
Claims (1)
102W／cm2以上のレーザ光が全反射ミラーを介し
て５ｍ以上離れた被加工物に至る光路に、保護カ
バーを設けてなるレーザ光伝送装置において、 上記保護カバー内の雰囲気をドライにする手段
を設けたことを特徴とするレーザ光伝送装置。[Utility model claim] The average power density emitted from the laser oscillator is 2x
A laser light transmission device having a protective cover provided on an optical path through which a laser light of 102 W/ cm2 or more passes through a total reflection mirror to a workpiece that is 5 m or more away, characterized in that the laser light transmission device further comprises a means for drying the atmosphere within the protective cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1982173301U JPS5977583U (en) | 1982-11-16 | 1982-11-16 | Laser light transmission equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1982173301U JPS5977583U (en) | 1982-11-16 | 1982-11-16 | Laser light transmission equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5977583U JPS5977583U (en) | 1984-05-25 |
| JPS6227343Y2 true JPS6227343Y2 (en) | 1987-07-13 |
Family
ID=30377561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1982173301U Granted JPS5977583U (en) | 1982-11-16 | 1982-11-16 | Laser light transmission equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5977583U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5419739B2 (en) * | 2010-02-03 | 2014-02-19 | 三菱電機株式会社 | Gas laser device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57133405A (en) * | 1981-02-10 | 1982-08-18 | Mochida Pharmaceut Co Ltd | Gas cooled fiber |
-
1982
- 1982-11-16 JP JP1982173301U patent/JPS5977583U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5977583U (en) | 1984-05-25 |
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