JPH0140892B2 - - Google Patents
Info
- Publication number
- JPH0140892B2 JPH0140892B2 JP59195652A JP19565284A JPH0140892B2 JP H0140892 B2 JPH0140892 B2 JP H0140892B2 JP 59195652 A JP59195652 A JP 59195652A JP 19565284 A JP19565284 A JP 19565284A JP H0140892 B2 JPH0140892 B2 JP H0140892B2
- Authority
- JP
- Japan
- Prior art keywords
- rotating body
- polygonal
- reflecting mirror
- hardening
- laser
- 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
- 239000002184 metal Substances 0.000 claims description 6
- 230000000694 effects Effects 0.000 description 5
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000010355 oscillation Effects 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 229910052732 germanium Inorganic materials 0.000 description 1
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、レーザ焼入れ装置に係り、特に回
転多面反射鏡を用いたレーザ焼入れ装置に関する
ものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a laser hardening device, and more particularly to a laser hardening device using a rotating polygonal reflecting mirror.
従来、この種の装置としては、第４図に示すよ
うなもの（機械と工具、APR.1984.P−38）があ
つた。図において、１は多角柱状または多角錐状
の多面反射鏡を構成する回転体、２は回転体１を
回転速度2000〜10000r.p.m程度に高速回転させる
高速モータ、３はレーザ発振ヘツドからのレーザ
ビームを集光して多面反射鏡に照射し、その反射
ビームの焦点を被加工物Ｗの表面近傍で結ばせる
ゲルマニウム製のレンズ、である。
Conventionally, this type of device has been the one shown in Figure 4 (Machines and Tools, APR.1984.P-38). In the figure, 1 is a rotating body that constitutes a polygonal prism-shaped or polygonal pyramid-shaped polygonal reflecting mirror, 2 is a high-speed motor that rotates the rotating body 1 at a high speed of about 2000 to 10000 rpm, and 3 is a laser beam from a laser oscillation head. This is a germanium lens that condenses a beam, irradiates it onto a polygonal reflecting mirror, and focuses the reflected beam near the surface of the workpiece W.
次に、作用について説明する。レーザ発振ヘツ
ドからのレーザビームは、レンズ３により集光さ
れて、モータ２により高速で回転する回転体１の
各鏡面１a1〜１aoに照射されて反射し、一定速
度、例えば約1m／minで移動する被加工物Ｗの
金属表面近傍に焦点を結び、その集中されたビー
ムエネルギーで被加工物Ｗの金属表面を加熱し、
表面焼入れを行う。この場合、回転体１は高速で
回転しているので、各反射鏡面１a1，１a2……１a
ｏと順次に反射される。この各反射鏡面での反射
は、回転により前面との稜線から平板状鏡面を経
て次の面との稜線へと移動しながら行なわれ、回
転による入、反射角の変化により、被加工物Ｗの
表面における焦点４を所定の幅で線状に走査する
ように移動させる。一方、被加工物Ｗは一定速度
で走査焦点線４とは直角方向に移動しているの
で、各反射鏡面１a1〜１aoによる走査焦点線４は
平行となるように移動し、金属表面を所定の幅で
焼入れ処理する。 Next, the effect will be explained. The laser beam from the laser oscillation head is focused by a lens 3, and is irradiated and reflected onto each mirror surface 1a1 to 1ao of a rotating body 1 that is rotated at high speed by a motor 2, at a constant speed, for example, about 1 m/min. focuses near the metal surface of the moving workpiece W, and heats the metal surface of the workpiece W with the concentrated beam energy,
Perform surface hardening. In this case, since the rotating body 1 is rotating at high speed, each reflective mirror surface 1 a1 , 1 a2 ... 1 a
o and are reflected sequentially. Reflection on each reflecting mirror surface is performed while moving from the ridgeline with the front surface, through the flat mirror surface, to the ridgeline with the next surface due to rotation. The focal point 4 on the surface is moved so as to scan linearly with a predetermined width. On the other hand, since the workpiece W is moving at a constant speed in a direction perpendicular to the scanning focal line 4, the scanning focal line 4 formed by each reflective mirror surface 1a1 to 1ao moves parallel to the metal surface. Harden to a specified width.
上記のような従来のレーザ焼入れ装置は、多面
反射鏡の各反射鏡面が軸心より等距離に取付けら
れているので、各反射鏡面による走査焦点線は、
被加工物の移動と回転体の回転速度とに応じた幅
で平行に、かつ順次に隣接する。従つて、レーザ
ビームによる単位面積における単位時間当りのビ
ームエネルギの集中度は、線状に高くなつて表面
溶融を生じ、焼入れ性能を悪化させる。特に、焼
入れ部分の両端では、エネルギ集中度が特に高く
なつて均一な焼入れが行えず、かつ溶融による表
面状態の悪化が生じていた。また、線状の焼入れ
処理となるので、ビームの形（モード、集光性）
の影響を受け易く、均一な焼入れができない、等
の問題点があつた。
In the conventional laser hardening device as described above, each reflecting mirror surface of the polygonal reflecting mirror is installed at the same distance from the axis, so the scanning focal line by each reflecting mirror surface is
They are adjacent in parallel and sequentially with a width that corresponds to the movement of the workpiece and the rotational speed of the rotating body. Therefore, the degree of concentration of beam energy per unit time in a unit area of the laser beam increases linearly, causing surface melting and deteriorating hardening performance. In particular, the degree of energy concentration was particularly high at both ends of the hardened portion, making it impossible to achieve uniform hardening, and the surface condition deteriorated due to melting. Also, since it is a linear hardening process, the shape of the beam (mode, light focusing ability)
There were problems such as being susceptible to the effects of heat and not being able to harden uniformly.
この発明は、かかる問題点を解決するためにな
されたもので、良好な焼入れ性能を得られるよう
にしたレーザ焼入れ装置を提供することを目的と
する。 The present invention was made to solve this problem, and an object of the present invention is to provide a laser hardening device that can obtain good hardening performance.
この発明に係るレーザ焼入れ装置は、回転体に
構成される多面反射鏡の各反射鏡面の軸心からの
取付距離を、それぞれ一定距離ずつ順次に異なら
せて偶数個、回転体の軸線に対して対称となるよ
うに配設したことを特徴とする。
The laser hardening device according to the present invention includes an even number of multifaceted reflecting mirrors configured in a rotating body, each of which has an installation distance from the axis of each reflecting mirror surface that is sequentially different by a fixed distance, with respect to the axis of the rotating body. It is characterized by being arranged symmetrically.
この発明は、上記のように構成されているの
で、夫々の反射鏡面における稜線から稜線までの
反射によるビーム焦点の移動は従来例と同様であ
るが、隣接する反射鏡面による平行した走査焦点
線との間の距離は、反射鏡面取付距離差に応じた
幅だけ離間し、回転体の高速回転と被加工物の一
定速度移動とにより、所定面内での複数走査焦点
線、即ち矩形面状にビームエネルギを分散して照
射するようになる。従つて、焼入れ処理面におけ
るビームエネルギの照射時間が長くなり、表面溶
融状態を生じることなく、焼入れ深さを深くする
ことができ、かつ、焼入れ部分の両端におけるビ
ームエネルギの過照射は回避される。更に、面状
の焼入れとなるので、レーザビームの形（モー
ド、集向性）の影響を受けることなく、均一な焼
入れを行うことができる。
Since this invention is configured as described above, the movement of the beam focus due to reflection from ridgeline to ridgeline on each reflecting mirror surface is the same as in the conventional example, but the movement of the beam focus due to reflection from the ridgeline to the ridgeline on each reflecting mirror surface is the same as in the conventional example, but the movement of the beam focus due to the reflection from the ridgeline to the ridgeline on each reflecting mirror surface is the same as in the conventional example. The distance between them is a width corresponding to the difference in the mounting distance of the reflecting mirror surface, and due to the high speed rotation of the rotating body and the constant speed movement of the workpiece, multiple scanning focal lines within a predetermined plane, that is, a rectangular surface shape. Beam energy is distributed and irradiated. Therefore, the irradiation time of the beam energy on the hardened surface becomes longer, the hardening depth can be increased without causing a surface melt state, and over-irradiation of the beam energy at both ends of the hardened part is avoided. . Furthermore, since hardening is performed in a planar manner, uniform hardening can be performed without being affected by the shape (mode, focusability) of the laser beam.
また、軸心からの距離ぎ等しい各組の反射鏡面
を軸心に対して対称となるように配置したので、
回転体の高速回転性を良好にすることができる。 In addition, since each set of reflective mirror surfaces with equal distances from the axis is arranged symmetrically with respect to the axis,
The high-speed rotation performance of the rotating body can be improved.
以下、本発明による一実施例を第１図〜第３図
に示す。図において、１は回転体、１a1〜１a4，
１b1〜１b4は回転体１に取付けられた偶数組の各
反射鏡面、２は回転体１を高速回転駆動するモー
タ、３はレンズ、４a1〜４a4，４b1〜４b2は各反
射鏡面による被加工物Ｗ上の走査点線、である。
An embodiment according to the present invention is shown in FIGS. 1 to 3 below. In the figure, 1 is a rotating body, 1 a1 to 1 a4 ,
1 b1 to 1 b4 are each of an even number of reflecting mirror surfaces attached to the rotating body 1, 2 is a motor that drives the rotating body 1 to rotate at high speed, 3 is a lens, 4 a1 to 4 a4 , 4 b1 to 4 b2 are each reflecting mirror This is a scanning dotted line on the workpiece W by a mirror surface.
次に、作用について説明する。回転体１に取付
けられた２組の反射鏡面群１a1〜１a4、および１b
１〜１b4は、第２図に示すように夫々の反射鏡面
の軸心からの距離を順次に等間隔ずつ異ならせて
配置され、両反射鏡面群の回転体１の軸心と対称
となるように配置されている。従つて、レーザ発
振体ヘツドからのレーザビームは、レンズ３によ
り集光されてモータ２で高速回転する回転体１の
各反射鏡面に入射され、反射されて一定速度で移
動する被加工物Ｗ表面近傍に焦点を結び、金属表
面を加熱して焼入れを行う。この場合、各反射鏡
面による夫々の走査焦点線は従来例と同様である
が、各反射鏡面群１a1〜１a4および１b1〜１b4に
よる夫々の走査焦点線間は、回転体１の回転によ
つて取付距離の差に応じた距離だけ離間して平行
となり、第３図に示すように最初の走査焦点線４
ａ１，４b1と最後の走査焦点線４a4，４b4との間に
は所定の幅が形成される。また、各走査焦点線
は、回転体１の高速回転、例えば2000〜10000r.
p.m.程度の回転と、被加工物Ｗの一定速度、例え
ば1m／min程度の移動により、次の回転時に隣
接するように移動され、取付距離が異なることに
よる走査焦点線の幅と、夫々の走査焦点線の順次
の平行移動により、矩形状面のビームエネルギ照
射を行うことになる。この面状のビームエネルギ
照射は、被加工物Ｗの金属表面におけるビームエ
ネルギの照射時間を長くし、表面溶融を生じるこ
となく焼入れ深さを深くでき、特に焼入れ部分の
両端部における表面溶融による表面状態の悪化は
防止される。また、面状のビームエネルギの照射
となるので、モードや集光性等によるレーザビー
ムの形の影響を受けることなく、均一な焼入れを
行うことができる。 Next, the effect will be explained. Two sets of reflective mirror surfaces 1 a1 to 1 a4 and 1 b attached to the rotating body 1
1 to 1 b4 are sequentially arranged at different distances from the axis of each reflecting mirror surface at equal intervals as shown in Fig. 2, and are symmetrical with the axis of the rotating body 1 of both reflecting mirror groups. It is arranged like this. Therefore, the laser beam from the laser oscillator head is focused by the lens 3 and incident on each reflecting mirror surface of the rotating body 1 which is rotated at high speed by the motor 2, and is reflected onto the surface of the workpiece W moving at a constant speed. It focuses on the nearby area and heats the metal surface to harden it. In this case, each scanning focal line by each reflecting mirror surface is the same as the conventional example, but the scanning focal line by each reflecting mirror surface group 1 a1 to 1 a4 and 1 b1 to 1 b4 is determined by the rotation of the rotating body 1. As shown in FIG. 3, the first scanning focal line 4
A predetermined width is formed between a1 , 4 b1 and the last scanning focal line 4 a4 , 4 b4 . Furthermore, each scanning focal line is determined by the high speed rotation of the rotating body 1, for example, from 2000 to 10000 r.
pm rotation and movement of the workpiece W at a constant speed, for example, about 1 m/min, the workpiece W is moved adjacently during the next rotation, and the width of the scanning focal line due to different mounting distances and the respective scanning Sequential translation of the focal line results in irradiation of a rectangular surface with beam energy. This planar beam energy irradiation lengthens the irradiation time of the beam energy on the metal surface of the workpiece W, making it possible to deepen the hardening depth without causing surface melting. Deterioration of the condition is prevented. Further, since the beam energy is irradiated in a planar manner, uniform hardening can be performed without being affected by the shape of the laser beam due to the mode, convergence, etc.
さらにまた、面状の焼入れなので、走査焦点線
と直角方向だけでなく、被加工物を任意の方向に
移動しても焼入れを行えるので、その応用性を広
ろげることができる。なお、各多面反射鏡群を回
転体の軸心に対して対称となるように配置したの
で、回転体に心振れが生ぜず、良好な高速回転性
を得ることができる。 Furthermore, since the hardening is performed in a planar manner, the hardening can be performed not only in the direction perpendicular to the scanning focal line but also when the workpiece is moved in any direction, thereby expanding its applicability. In addition, since each polygonal reflecting mirror group is arranged symmetrically with respect to the axis of the rotating body, no runout occurs in the rotating body, and good high-speed rotation performance can be obtained.
この発明は、上記のように構成されているの
で、表面溶融が生じることなく焼入れ深さを深く
でき、かつ焼入れの均一性が得られレーザ焼入れ
装置の性能を大幅に向上させることができる。
Since the present invention is configured as described above, the hardening depth can be increased without surface melting, uniformity of hardening can be obtained, and the performance of the laser hardening apparatus can be greatly improved.
第１図は本発明に一実施例の説明図、第２図は
回転体の平面図、第３図は各走査焦点線の軌跡
図、第４図は従来例の説明図。
図において、１は回転体、２は高速回転モー
タ、３はレンズ、４は走査焦点線、Ｗは被加工物
である。なお、各図中同一符号は同一または相当
部分を示す。
FIG. 1 is an explanatory diagram of one embodiment of the present invention, FIG. 2 is a plan view of a rotating body, FIG. 3 is a locus diagram of each scanning focal line, and FIG. 4 is an explanatory diagram of a conventional example. In the figure, 1 is a rotating body, 2 is a high-speed rotating motor, 3 is a lens, 4 is a scanning focal line, and W is a workpiece. Note that the same reference numerals in each figure indicate the same or corresponding parts.
Claims (1)
する回転体にレーザビームを当て、その反射ビー
ムで金属表面に焼入れを行うものにおいて、上記
回転体の中心から上記多面反射鏡の各鏡面までの
取付距離をそれぞれ異ならせたことを特徴とする
レーザ焼入れ装置。 ２ 上記多面反射鏡の取付距離の差を等間隔とし
て偶数組設け、上記回転体の軸線に対して対称に
配設するようにしたことを特徴とする特許請求の
範囲第１項記載のレーザ焼入れ装置。[Scope of Claims] 1. A device in which a laser beam is applied to a rotating body constituting a polygonal columnar or polygonal pyramidal polygonal reflecting mirror, and a metal surface is hardened with the reflected beam, in which the polygonal reflection is caused from the center of the rotating body. A laser hardening device characterized by having different mounting distances to each mirror surface. 2. Laser hardening according to claim 1, characterized in that an even number of sets of the polygonal reflecting mirrors are provided at equal intervals, and are arranged symmetrically with respect to the axis of the rotating body. Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59195652A JPS6173821A (en) | 1984-09-20 | 1984-09-20 | Laser hardening device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59195652A JPS6173821A (en) | 1984-09-20 | 1984-09-20 | Laser hardening device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6173821A JPS6173821A (en) | 1986-04-16 |
| JPH0140892B2 true JPH0140892B2 (en) | 1989-09-01 |
Family
ID=16344731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59195652A Granted JPS6173821A (en) | 1984-09-20 | 1984-09-20 | Laser hardening device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6173821A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0517676U (en) * | 1991-08-21 | 1993-03-05 | 日本トツプ工業株式会社 | Guide plate attachment |
| WO2021010263A1 (en) * | 2019-07-12 | 2021-01-21 | 株式会社ＮｅｊｉＬａｗ | Stress monitoring device, stress monitoring system, and monitoring system |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EA023676B1 (en) * | 2012-07-27 | 2016-06-30 | Владимир Владимирович Жарский | Method of surface hardening of metal articles by traveling laser beam |
-
1984
- 1984-09-20 JP JP59195652A patent/JPS6173821A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0517676U (en) * | 1991-08-21 | 1993-03-05 | 日本トツプ工業株式会社 | Guide plate attachment |
| WO2021010263A1 (en) * | 2019-07-12 | 2021-01-21 | 株式会社ＮｅｊｉＬａｗ | Stress monitoring device, stress monitoring system, and monitoring system |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6173821A (en) | 1986-04-16 |
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