JPS6015486U

JPS6015486U - Laser processing head

Info

Publication number: JPS6015486U
Application number: JP1983107352U
Authority: JP
Inventors: 小川　周治; 重典八木; 昌樹葛本; 公治安井
Original assignee: Mitsubishi Electric Corp
Current assignee: Mitsubishi Electric Corp
Priority date: 1983-07-11
Filing date: 1983-07-11
Publication date: 1985-02-01

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図ａは従来のレーザ加工ヘッドを示す縦断面図、第
１図すは、第１図ａのレーザ加工ヘッドにおける電磁弁
の開閉とレンズにかかる圧力との関係を示す特性図、第
２図ａはこの考案の一実施例であるレーザ加工ヘッドを
示す縦断面図、第２図すは、第２図ａのレーザ加工ヘッ
ドにおけるモータ駆動バルブの開閉とレンズにかかる圧
力との関係を示す特性図、第３図ａはこの考案の他の実
施例であるレーザ加工ヘッドを示す縦断面図、第３図す
は、第３図ａのレーザ加エヘツデにおける電磁弁の開閉
レンズにかかる圧力との関係を示す特性図、第４図ａは
この考案のさらに他の実施例であるレーザ加工ヘッドを
示す縦断面図、第４図ｂｃ１、第４図ａのレーザ加工ヘ
ッドにおける電磁弁の開閉とレンズにかかる圧力との関
係を示す特性図である。図において、１・・・・・・レーザビーム、２・・・・
・・レンズ、３・・・・・・熱伝導性クッション材、４
・・・・・・レンズホルダ、５・・・・・・ノズル、６
・・・・・・アシストガスボンベ、７・・・・・・圧力
調整器、８．８ｌ−２Ａ、８ｌ−２Ｂ・・・・・・電磁
弁、８−１・・・・・・モータ駆動バルブ、８−３・・
・・・・オリフィス、９・・・・・・加工対象物、１０
・・・・・・冷却水である。＋ｌｔ”　　−。（ｂ）ネｌゝ−一一］電話行の開閉Fig. 1a is a longitudinal sectional view showing a conventional laser processing head, Fig. 1 is a characteristic diagram showing the relationship between the opening/closing of the electromagnetic valve and the pressure applied to the lens in the laser processing head of Fig. 1a, and Fig. 2 Figure a is a longitudinal cross-sectional view showing a laser processing head that is an embodiment of this invention, and Figure 2 shows the relationship between the opening and closing of the motor-driven valve and the pressure applied to the lens in the laser processing head of Figure 2a. The characteristic diagram, Fig. 3a, is a longitudinal sectional view showing a laser processing head which is another embodiment of this invention, and Fig. 3a shows the pressure applied to the opening/closing lens of the electromagnetic valve in the laser processing head of Fig. 3a. Fig. 4a is a longitudinal cross-sectional view showing a laser processing head which is yet another embodiment of this invention, Fig. 4bc1, and opening/closing of the solenoid valve in the laser processing head of Fig. 4a. FIG. 3 is a characteristic diagram showing the relationship with the pressure applied to the lens. In the figure, 1... laser beam, 2...
...Lens, 3...Thermally conductive cushioning material, 4
... Lens holder, 5 ... Nozzle, 6
...Assist gas cylinder, 7...Pressure regulator, 8.8l-2A, 8l-2B...Solenoid valve, 8-1...Motor-driven valve , 8-3...
... Orifice, 9 ... Workpiece, 10
・・・・・・It is cooling water. +lt” -. (b) Nelゝ-11] Opening/closing the telephone line

Claims

[Scope of utility model registration request]

(1) A laser processing head that has a nozzle that emits a laser beam focused by a lens and an assist gas almost coaxially, and is equipped with a mechanism that can continuously vary the gas flow rate of the assist gas. A laser processing head consisting of:

(2) The mechanism capable of continuously varying the gas flow rate of the assist gas is capable of varying at least the gas flow rate in two or more stages. A laser processing head according to claim 1.

(3) Registration of a utility model characterized in that, as the mechanism capable of continuously varying the gas flow rate of the assist gas, a mechanism capable of continuously controlling the gas flow rate by a motor-driven valve is used. A laser processing head according to claim 1.

(4) As the mechanism capable of continuously varying the gas flow rate of the atomist gas, a mechanism capable of continuously controlling the gas flow rate by a combination of a solenoid valve and an orifice is used. A laser processing head according to claim 1 of the utility model registration claim.