JPH0444351U

JPH0444351U -

Info

Publication number: JPH0444351U
Application number: JP8606290U
Authority: JP
Priority date: 1990-08-15
Filing date: 1990-08-15
Publication date: 1992-04-15

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本考案の第１実施例の要部の一部切欠
概略斜視図、第２図は第１図示の装置によりレー
ザ焼入れした焼入れ部を示す断面図、第３図は本
考案の第２実施例の要部とその焼入れ状況を示す
断面図、第４図は従来のレーザ焼入装置の要部の
一部切欠概略斜視図である。１……レーザ発振器、２……レーザ光、３……
照射光学系、４……筒体、４ａ……内面、６……
回転手段、７……回転筒、８……ウオームホイー
ル、９……ウオーム、１０……モータ、１１……
窓孔、１２……凸レンズ、１４，１７……反射鏡
、１４ａ，１７ａ……反射面、１４ｂ，１７ｂ…
…稜線、１５……スポツト形状、１６……焼入れ
部、Ｄ……照射幅、Ｌ……筒体４の中心軸線、Ｌ
_１……入射光軸、Ｌ_２……反射光軸。 Fig. 1 is a partially cutaway schematic perspective view of the main part of the first embodiment of the present invention, Fig. 2 is a sectional view showing the hardened part laser hardened by the apparatus shown in Fig. 1, and Fig. 3 is the main part of the first embodiment of the present invention. FIG. 4 is a cross-sectional view showing the main parts of the second embodiment and their hardening conditions, and FIG. 4 is a partially cutaway schematic perspective view of the main parts of a conventional laser hardening apparatus. 1... Laser oscillator, 2... Laser light, 3...
Irradiation optical system, 4... Cylindrical body, 4a... Inner surface, 6...
Rotating means, 7... Rotating cylinder, 8... Worm wheel, 9... Worm, 10... Motor, 11...
Window hole, 12...Convex lens, 14, 17...Reflecting mirror, 14a, 17a...Reflecting surface, 14b, 17b...
...Ridge line, 15...Spot shape, 16...Hardened portion, D...Irradiation width, L...Central axis of cylinder 4, L
₁ ...Incidence optical axis, _L2 ...Reflection optical axis.

Claims

【実用新案登録請求の範囲】[Scope of utility model registration request]

レーザ発振器により放射されたレーザ光を、照
射光学系により、焼入れしようとする筒体内に導
くとともに、前記筒体内に配設した反射鏡により
、筒体の内面に向かつて反射し、かつ前記反射鏡
を回転手段により、筒体の中心軸線と平行な軸線
まわりに回転させることにより、筒体の内面を、
レーザ光により円周方向に走査して焼入れするよ
うにした円筒内面のレーザ焼入装置において、前
記反射鏡の反射面を、稜線がレーザ光の入射光軸
及び反射光軸と直交する方向を向く凸状湾曲面と
することにより、該反射面で反射したレーザ光を
筒体の長手方向に拡散させるようにしたことを特
徴とする円筒内面のレーザ焼入装置。 A laser beam emitted by a laser oscillator is guided into the cylinder to be hardened by an irradiation optical system, and is reflected toward the inner surface of the cylinder by a reflection mirror disposed inside the cylinder, and the reflection mirror By rotating around an axis parallel to the central axis of the cylinder using a rotating means, the inner surface of the cylinder is
In a laser hardening device for the inner surface of a cylinder, which hardens the inner surface of a cylinder by scanning the laser beam in the circumferential direction, the reflecting surface of the reflecting mirror is oriented in a direction in which the ridge line is perpendicular to the incident optical axis and the reflected optical axis of the laser beam. A laser hardening device for the inner surface of a cylinder, characterized in that the laser beam reflected by the reflecting surface is diffused in the longitudinal direction of the cylinder by forming a convex curved surface.