JPH0412386U

JPH0412386U -

Info

Publication number: JPH0412386U
Application number: JP1990052416U
Authority: JP
Priority date: 1990-05-19
Filing date: 1990-05-19
Publication date: 1992-01-31

Description

[Brief explanation of drawings]

第１図はこの考案の一実施例の構成説明図、第
２図はその一部の詳細を示す電気回路図、第３図
は同じくそのレーザ加工機の外観斜視図、第４図
は同じくその動作説明図、第５図は従来例の動作
説明図、第６図はそのワークの平面図、第７図は
同従来例の電気回路図である。１……ノズル、２……変位センサ、３……隙間
一定制御手段、４……微分手段、５……スイツチ
ング手段、６……昇降装置、７……タレツト、９
……レーザ発振器、１０……ガイド筒、１２……
サーボモータ、１３……ワークテーブル、１７…
…速度指令値生成手段、２５……孔、ｄ……距離
、ｗ……ワーク。 Fig. 1 is an explanatory diagram of the configuration of one embodiment of this invention, Fig. 2 is an electric circuit diagram showing some details, Fig. 3 is an external perspective view of the laser processing machine, and Fig. 4 is the same. FIG. 5 is an explanatory diagram of the operation of the conventional example, FIG. 6 is a plan view of the workpiece, and FIG. 7 is an electric circuit diagram of the conventional example. DESCRIPTION OF SYMBOLS 1... Nozzle, 2... Displacement sensor, 3... Gap constant control means, 4... Differentiating means, 5... Switching means, 6... Lifting device, 7... Turret, 9
...Laser oscillator, 10...Guide tube, 12...
Servo motor, 13... Work table, 17...
...Speed command value generation means, 25...hole, d...distance, w...work.

Claims

[Scope of utility model registration request]

a lifting device that raises and lowers a nozzle that irradiates a laser beam with respect to a workpiece; a displacement sensor that is provided on the nozzle and detects a distance from the workpiece in a non-contact manner;
a gap constant control means for controlling the lifting device so that the distance between the nozzle and the workpiece is maintained constant in response to the detected value of the displacement sensor; and a differentiating means for detecting a change in the output of the displacement sensor; A laser processing machine comprising switching means for alternately switching the gap constant control means between a status quo output state and an active state in response to an output equal to or higher than a set value of the differentiating means.