CN107297574B - A kind of laser cutting machine cutting head focus adjustment method - Google Patents
A kind of laser cutting machine cutting head focus adjustment method Download PDFInfo
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- CN107297574B CN107297574B CN201710488305.5A CN201710488305A CN107297574B CN 107297574 B CN107297574 B CN 107297574B CN 201710488305 A CN201710488305 A CN 201710488305A CN 107297574 B CN107297574 B CN 107297574B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/36—Removing material
- B23K26/38—Removing material by boring or cutting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
- B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
- B23K26/064—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms
- B23K26/0643—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms comprising mirrors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/70—Auxiliary operations or equipment
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Laser Beam Processing (AREA)
Abstract
The invention discloses a kind of laser cutting machine cutting head focus adjustment methods, including following method: step 1: obtaining the imaging of optical fiber on light-sensitive paper, the focus lamp of cutting head is dropped to apart from light-sensitive paper 150mm, optical parameter is provided, including nitrogen 0.5bar full power, out when light between 50ms, on light-sensitive paper go out light, obtain the imaging of zlasing mode；Step 2: analysis imaging, if diameter, which is imaged, is less than 18mm, it may determine that optical fiber BPP value very little, when cutting limit carbon sheet, section most probably will appear burning hole, may go to cut with the mode of frequency when doing cutting parameter, when diameter is greater than 19mm, it is considered normal spot diameter, is made substantially just enough of continuous mode when cutting parameter；Step 3: cutting 8mm carbon steel measures joint-cutting, judges carbon steel coke, change focal position, from 0 to+4, corresponding focal position is exactly the focus of our carbon steels to be looked for when joint-cutting is between 0.33-0.35mm.
Description
Technical field
The present invention relates to cutting machine technical field, specially a kind of laser cutting machine cutting head focus adjustment method.
Background technique
Laser cutting machine in the industry using more and more extensive, comprising perforation and cutting process in laser cutting process,
When being perforated, either carbon steel either stainless steel is perforated when focus is located at material surface or material surface or less
Efficiency it is higher, but for cleaver, carbon steel and stainless steel be it is different, it is burnt when the material of cutting different-thickness
Depth of the point away from plate surface is different, need to be adjusted in time according to plate type and thickness, in slab perforation procedure, most easily
There is blast hole, i.e., Kong Wei is punched and slag flashes, and must be stopped acting at this time, be perforated from the beginning, and whether perforation is completed to need
Judged, be judged as after the completion of perforation and enter cutting process at once, conventional laser cutting machine is being directed to unlike material, difference
When the cutting plate of thickness, it is difficult to be adjusted to the focus of cutting head, to reduce cut quality and efficiency.
Summary of the invention
The purpose of the present invention is to provide a kind of laser cutting machine cutting head focus adjustment method, having can be to the coke of cutting head
Point is adjusted, so that the advantages of improving cut quality and efficiency, solves and is difficult to be adjusted the focus of cutting head, thus
The problem of reducing cut quality and efficiency.
To achieve the above object, the invention provides the following technical scheme: a kind of laser cutting machine cutting head focus adjustment method, such as
Lower method:
Step 1: obtaining the imaging of optical fiber on light-sensitive paper, cutting head is dropped to apart from light-sensitive paper 150mm(for focusing
Mirror is 150mm), optical parameter, including nitrogen 0.5bar full power is provided, out when light between 50ms, on light-sensitive paper go out light, obtain
To the imaging of zlasing mode；
Step 2: analysis imaging, if imaging diameter is less than 18mm, it can be determined that optical fiber BPP value very little, in the cutting limit
When carbon sheet, section most probably will appear burning hole, may go to cut with the mode of frequency when doing cutting parameter, diameter is greater than
When 19mm, it is considered normal spot diameter, is made substantially just enough of continuous mode when cutting parameter；
Step 3: cutting 8mm carbon steel measures joint-cutting, carbon steel coke is judged, change focal position and work as joint-cutting from 0 to+4
Corresponding focal position is exactly the focus of our carbon steels to be looked for when between 0.33-0.35.
Preferably, when the carbon steel carries out focusing perforation, perforation detection unit includes preamplifier, perforation detection sensing
Device, blast hole detection sensor, temperature detection sensor, the preamplifier are detected with perforation detection sensor, blast hole respectively
Sensor, temperature detection sensor connection, CNC connect with preamplifier, the perforation detection sensor in perforation procedure,
Light forms reflection on the surface of the material, and the photosensitive sensor in cutting head detects the power of the light of this feedback, and generates electricity
Signal, according to this electric signal come the size of control punch power, popping phenomenon will be occurred by judging whether need to make perforation function
Rate adjustment, and detect whether perforation is completed.
Preferably, lens systems of focusing when the focusing include focus-variable lens, proportioning valve, total reflection mirror, mounting base, zoom
Eyeglass, proportioning valve, total reflection mirror are fixed in mounting base, and focus-variable lens are located at total reflection mirror side, and the CNC and proportioning valve connect
It connects, proportioning valve is connect with focus-variable lens, and CNC is to control proportioning valve output gas pressure according to database data output signal
Value.
Preferably, the focus-variable lens used of focusing are hollow structure, and reflecting surface is equipped with specifically for optical-fiber laser
The coating of device reflected light, focus-variable lens can realize reflector curvature variation with gas pressure change in cavity.
Preferably, described when focusing to carbon steel, it need to be adjusted manually, the position of cutting head makes laser alignment
Focal position.
Specific embodiment
The following is a clear and complete description of the technical scheme in the embodiments of the invention, it is clear that described embodiment
Only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, the common skill in this field
Art personnel every other embodiment obtained without making creative work belongs to the model that the present invention protects
It encloses.
The present invention provides a kind of technical solution: a kind of laser cutting machine cutting head focus adjustment method, including following method:
Step 1: obtaining the imaging of optical fiber on light-sensitive paper, cutting head is dropped to apart from light-sensitive paper 150mm(for focusing
Mirror is 150mm), optical parameter, including nitrogen 0.5bar full power is provided, out when light between 50ms, on light-sensitive paper go out light, obtain
To the imaging of zlasing mode；
Step 2: analysis imaging, if imaging diameter is less than 18mm, it can be determined that optical fiber BPP value very little, in the cutting limit
When carbon sheet, section most probably will appear burning hole, may go to cut with the mode of frequency when doing cutting parameter, diameter is greater than
When 19mm, it is considered normal spot diameter, is made substantially just enough of continuous mode when cutting parameter；
Step 3: cutting 8mm carbon steel measures joint-cutting, carbon steel coke is judged, change focal position and work as joint-cutting from 0 to+4
Corresponding focal position is exactly the focus of our carbon steels to be looked for when between 0.33-0.35.
Embodiment one:
Step 1: obtaining the imaging of optical fiber on light-sensitive paper, cutting head is dropped to apart from light-sensitive paper 150mm(for focusing
Mirror is 150mm), optical parameter, including nitrogen 0.5bar full power is provided, out when light between 50ms, on light-sensitive paper go out light, obtain
To the imaging of zlasing mode；Step 2: analysis imaging, if imaging diameter is less than 18mm, it can be determined that optical fiber BPP value very little,
When cutting limit carbon sheet, section most probably will appear burning hole, may go to cut with the mode of frequency when doing cutting parameter,
When diameter is greater than 19mm, it is considered normal spot diameter, is made substantially just enough of continuous mode when cutting parameter；
Step 3: cutting 8mm carbon steel measures joint-cutting, judges carbon steel coke, change focal position, from 0 to+4, when joint-cutting is in 0.33-
Corresponding focal position is exactly the focus of our carbon steels to be looked for when between 0.35.
Embodiment two:
In example 1, following processes are added:
When carrying out focusing perforation to carbon steel, perforation detection unit includes preamplifier, perforation detection sensor, blast hole
Detection sensor, temperature detection sensor, the preamplifier respectively with perforation detection sensor, blast hole detection sensor,
Temperature detection sensor connection, CNC are connect with preamplifier, and the perforation detection sensor is in perforation procedure, and light is in material
Expect that surface forms reflection, the photosensitive sensor in cutting head detects the power of the light of this feedback, and generates electric signal, root
Carry out the size of control punch power according to this electric signal, judge whether will to occur popping phenomenon and need to make punctured power adjustment,
And detect whether perforation is completed.
Step 1: obtaining the imaging of optical fiber on light-sensitive paper, cutting head is dropped to apart from light-sensitive paper 150mm(for focusing
Mirror is 150mm), optical parameter, including nitrogen 0.5bar full power is provided, out when light between 50ms, on light-sensitive paper go out light, obtain
To the imaging of zlasing mode；Step 2: analysis imaging, if imaging diameter is less than 18mm, it can be determined that optical fiber BPP value very little,
When cutting limit carbon sheet, section most probably will appear burning hole, may go to cut with the mode of frequency when doing cutting parameter,
When diameter is greater than 19mm, it is considered normal spot diameter, is made substantially just enough of continuous mode when cutting parameter；
Step 3: cutting 8mm carbon steel measures joint-cutting, judges carbon steel coke, change focal position, from 0 to+4, when joint-cutting is in 0.33-
Corresponding focal position is exactly the focus of our carbon steels to be looked for when between 0.35.
Embodiment three:
In example 2, following processes are added:
Lens systems of focusing when focusing include focus-variable lens, proportioning valve, total reflection mirror, mounting base, focus-variable lens, ratio
Valve, total reflection mirror are fixed in mounting base, and focus-variable lens are located at total reflection mirror side, and the CNC is connect with proportioning valve, proportioning valve
It is connect with focus-variable lens, CNC is to control proportioning valve output gas pressure value according to database data output signal.
Step 1: obtaining the imaging of optical fiber on light-sensitive paper, cutting head is dropped to apart from light-sensitive paper 150mm(for focusing
Mirror is 150mm), optical parameter, including nitrogen 0.5bar full power is provided, out when light between 50ms, on light-sensitive paper go out light, obtain
To the imaging of zlasing mode；Step 2: analysis imaging, if imaging diameter is less than 18mm, it can be determined that optical fiber BPP value very little,
When cutting limit carbon sheet, section most probably will appear burning hole, may go to cut with the mode of frequency when doing cutting parameter,
When diameter is greater than 19mm, it is considered normal spot diameter, is made substantially just enough of continuous mode when cutting parameter；
Step 3: cutting 8mm carbon steel measures joint-cutting, judges carbon steel coke, change focal position, from 0 to+4, when joint-cutting is in 0.33-
Corresponding focal position is exactly the focus of our carbon steels to be looked for when between 0.35.
Example IV:
In the third embodiment, following processes are added:
The focus-variable lens used of focusing are hollow structure, and reflecting surface is equipped with the painting specifically for optical fiber laser reflected light
Layer, focus-variable lens can realize reflector curvature variation with gas pressure change in cavity, when focusing to carbon steel, need manual
It is adjusted, the position of cutting head makes laser alignment focal position.
Step 1: obtaining the imaging of optical fiber on light-sensitive paper, cutting head is dropped to apart from light-sensitive paper 150mm(for focusing
Mirror is 150mm), optical parameter, including nitrogen 0.5bar full power is provided, out when light between 50ms, on light-sensitive paper go out light, obtain
To the imaging of zlasing mode；Step 2: analysis imaging, if imaging diameter is less than 18mm, it can be determined that optical fiber BPP value very little,
When cutting limit carbon sheet, section most probably will appear burning hole, may go to cut with the mode of frequency when doing cutting parameter,
When diameter is greater than 19mm, it is considered normal spot diameter, is made substantially just enough of continuous mode when cutting parameter；
Step 3: cutting 8mm carbon steel measures joint-cutting, judges carbon steel coke, change focal position, from 0 to+4, when joint-cutting is in 0.33-
Corresponding focal position is exactly the focus of our carbon steels to be looked for when between 0.35.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (5)
1. a kind of laser cutting machine cutting head focus adjustment method, it is characterised in that: including following method:
Step 1: obtaining the imaging of optical fiber on light-sensitive paper, the focus lamp of cutting head is dropped to apart from light-sensitive paper 150mm, setting
Optical parameter out, including nitrogen 0.5bar full power, out when light between 50ms, on light-sensitive paper go out light, obtain the imaging of zlasing mode；
Step 2: analysis imaging, if imaging diameter is less than 18mm, it can be determined that optical fiber BPP value very little, in cutting limit carbon steel
When plate, section most probably will appear burning hole, may go to cut with the mode of frequency when doing cutting parameter, and diameter is greater than 19mm
When, it is considered normal spot diameter, is made substantially just enough of continuous mode when cutting parameter；
Step 3: cutting 8mm carbon steel measures joint-cutting, judges carbon steel coke, change focal position, from 0 to+4, when joint-cutting exists
Corresponding focal position is exactly the focus of our carbon steels to be looked for when between 0.33-0.35mm.
2. a kind of laser cutting machine cutting head focus adjustment method according to claim 1, it is characterised in that: described to carbon steel
When carrying out focusing perforation, perforation detection unit includes preamplifier, perforation detection sensor, blast hole detection sensor, temperature
Detection sensor, the preamplifier connect with perforation detection sensor, blast hole detection sensor, temperature detection sensor respectively
It connects, CNC is connect with preamplifier, and for the perforation detection sensor in perforation procedure, light forms reflection, position on the surface of the material
The power of the light of this feedback is detected in the photosensitive sensor in cutting head, and generates electric signal, is controlled according to this electric signal
The size of punctured power processed judges whether will to occur popping phenomenon and need to make punctured power adjustment, and whether detect perforation complete
At.
3. a kind of laser cutting machine cutting head focus adjustment method according to claim 2, it is characterised in that: the tune when focusing
Focus lens system includes focus-variable lens, proportioning valve, total reflection mirror, mounting base, and focus-variable lens, proportioning valve, total reflection mirror are fixed on
In mounting base, focus-variable lens are located at total reflection mirror side, and the CNC is connect with proportioning valve, and proportioning valve is connect with focus-variable lens,
CNC is to control proportioning valve output gas pressure value according to database data output signal.
4. a kind of laser cutting machine cutting head focus adjustment method according to claim 1, it is characterised in that: the focusing uses
Focus-variable lens be hollow structure, reflecting surface is equipped with the coating specifically for optical fiber laser reflected light, and focus-variable lens can be with
Gas pressure change realizes reflector curvature variation in cavity.
5. a kind of laser cutting machine cutting head focus adjustment method according to claim 1, it is characterised in that: described to carbon steel
It when being focused, need to be adjusted manually, the position of cutting head makes laser alignment focal position.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109164760B (en) * | 2018-10-22 | 2020-07-14 | 大族激光科技产业集团股份有限公司 | Height adjusting method and device with dual working modes |
| CN110170749A (en) * | 2019-05-22 | 2019-08-27 | 奔腾激光(温州)有限公司 | A kind of ultrafast cutting technique of laser cutting machine |
| CN110514410A (en) * | 2019-08-21 | 2019-11-29 | 奔腾楚天激光（武汉）有限公司 | A kind of optical-fiber laser cutting machine quickly judges the process of protection lens quality |
| CN110711937B (en) * | 2019-11-14 | 2022-01-04 | 安徽同兴科技发展有限责任公司 | Parameter determination method for laser focusing of cutting machine |
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Address after: 325000 no.4258, 3rd road, Binhai Park, Wenzhou Economic and Technological Development Zone, Zhejiang Province Patentee after: Pentium laser (Zhejiang) Co.,Ltd. Address before: 325000 No. 4258, 3rd road, Binhai Park, Wenzhou Economic and Technological Development Zone, Zhejiang Province Patentee before: PENTA LASER (WENZHOU) Co.,Ltd. |
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