JPS645690A - Laser beam machine - Google Patents
Laser beam machineInfo
- Publication number
- JPS645690A JPS645690A JP62161694A JP16169487A JPS645690A JP S645690 A JPS645690 A JP S645690A JP 62161694 A JP62161694 A JP 62161694A JP 16169487 A JP16169487 A JP 16169487A JP S645690 A JPS645690 A JP S645690A
- Authority
- JP
- Japan
- Prior art keywords
- light
- circuit
- signals
- signal
- smoke
- 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.)
- Pending
Links
Abstract
PURPOSE:To prevent optical parts from deteriorating and poor working from occurring in a beam conduct by providing a smoke detecting means in the beam duct shielding laser beams and actuating an output control means by signals from this smoke detecting means. CONSTITUTION:When smoke powder 20, etc., flows into the beam duct light emitted from a light emitting diode 13 is scattered by the smoke powder 20 and part of the light arrives at a light sensor 14. This light is detected by the sensor 14, becomes electrically conductive, is amplified by a light receiving amplifier circuit 15 and outputted as pulse signals. Since an analog switch 17 repeats ONs, OFFs synchronizing with signals of the synchronous pulse generating circuit 16, only signals by the induced light sensor 14 are inputted into a voltage hold circuit 18. The circuit 18 clamps a signal from the light receiving amplifier circuit 15, converts it into a DC signal, and outputs it. When a comparison circuit 19 compares it with a threshold value signal VTH and the signal of the voltage hold circuit 18 is larger than the threshold value signal VTH, the relay is excited and the laser beam stops oscillation as soon as buzzer operates.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62161694A JPS645690A (en) | 1987-06-29 | 1987-06-29 | Laser beam machine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62161694A JPS645690A (en) | 1987-06-29 | 1987-06-29 | Laser beam machine |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS645690A true JPS645690A (en) | 1989-01-10 |
Family
ID=15740087
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62161694A Pending JPS645690A (en) | 1987-06-29 | 1987-06-29 | Laser beam machine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS645690A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05212575A (en) * | 1992-02-07 | 1993-08-24 | Fanuc Ltd | Laser beam machine |
WO2012050191A1 (en) | 2010-10-15 | 2012-04-19 | 三菱電機株式会社 | Laser processing machine and bellows device |
-
1987
- 1987-06-29 JP JP62161694A patent/JPS645690A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05212575A (en) * | 1992-02-07 | 1993-08-24 | Fanuc Ltd | Laser beam machine |
WO2012050191A1 (en) | 2010-10-15 | 2012-04-19 | 三菱電機株式会社 | Laser processing machine and bellows device |
US8803026B2 (en) | 2010-10-15 | 2014-08-12 | Mitsubishi Electric Corporation | Laser machining device and bellows device |
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