CN102699527B - Intelligent focusing device of laser machining head - Google Patents
Intelligent focusing device of laser machining head Download PDFInfo
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- CN102699527B CN102699527B CN201210205518.XA CN201210205518A CN102699527B CN 102699527 B CN102699527 B CN 102699527B CN 201210205518 A CN201210205518 A CN 201210205518A CN 102699527 B CN102699527 B CN 102699527B
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- overcoat
- focusing lens
- magnet steel
- output shaft
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Abstract
The invention relates to an intelligent focusing device of a laser machining head. The intelligent focusing device comprises an external sleeve and a focusing lens, wherein two ends of the external sleeve are respectively provided with a gun head connecting end cover and an optical fiber laser connecting end cover; a linear motor is fixed at the outer wall of the external sleeve; a motor output shaft of the linear motor is parallel to the axis of the external sleeve; a driving slide block is fixed on the motor output shaft; driving magnetic steel is fixed on the driving slide block; a slide sleeve is arranged in the external sleeve in a sliding fit way; a dual magnetic conductor matched with the driving magnetic steel is fixed on the slide sleeve; and the focusing lens is fixed in the slide sleeve. According to the invention, as the focusing lens is fixed on the slide sleeve, the focusing lens in the slide sleeve is driven to move through the linear motion of the linear motor, so that the focusing lens is intelligently and automatically focused; and the intelligent focusing device of the laser machining head, provided by the invention, has the advantages of simple structure, accuracy for positioning, high precision, convenience in operation and high efficiency.
Description
Technical field
The present invention relates to laser-processing system, specifically a kind of intelligent focus control of laser Machining head.
Background technology
For laser-processing system, no matter be in laser cutting, or laser weld, in laser melting coating, all exist the variation along with workpiece material, the variation of thickness of workpiece, laser spot is had to different requirements with respect to the position of workpiece, to reach best processing effect.
To a laser focusing lens, its focus just creates and determines from eyeglass, and it is determined by the surperficial curvature of eyeglass.With regard to laser cutting, in order to reach best cutting effect, the focus of laser will be set on the surface of workpiece sometimes, is called negative out of focus; Inside or the lower curtate that sometimes will be located at workpiece, be called positive out of focus.What regulate is not the focus of eyeglass, but the work focal length of laser.Focus ± the out of focus of the work focal length=eyeglass of laser.
Traditional focus adjustment method, is that the nozzle of processing head is arranged on a screwed part, utilizes the rotation of screw thread, changes the distance between nozzle and focusing lens, reaches the object that changes job spotlight.This focus adjustment method, relies on manually completely, and adjustment process is loaded down with trivial details time-consuming; When workpiece or material have changed, again lathe is stopped, reset focus.In addition, mismachining tolerance due to screw thread, or the mismachining tolerance in nozzle center hole, after the focusing of over-rotation screw thread, also there is variation in the concentricity that the optical axis after Laser Focusing and the laser of nozzle penetrate hole, so after job spotlight is resetted, must rebuild the alignment in laser beam and ejaculation hole, this process often will take many working times, has certainly reduced production efficiency.
Summary of the invention
The present invention is directed to the problems referred to above, a kind of intelligent focus control of laser Machining head is provided, this focus control precision is high, efficiency is high.
According to technical scheme of the present invention: a kind of intelligent focus control of laser Machining head, comprise overcoat and focusing lens, the two ends of described overcoat are respectively arranged with rifle head and connect end cap and optical fiber laser connection end cap, on the outer wall of described overcoat, be fixed with linear electric motors, the motor output shaft of described linear electric motors is parallel to the axis of described overcoat, on described motor output shaft, be fixed with driving slide block, on described driving slide block, be fixed with driving magnet steel; In described overcoat, be sliding combined with sliding sleeve, be fixed with the antithesis magnetic conductor matching with described driving magnet steel on described sliding sleeve, described focusing lens is fixed in described sliding sleeve.
Described driving magnet steel adopts Rb-Fe-B material.
On the outer wall of described overcoat, have axial slide, be provided with isolating seal sheet in described chute, described driving magnet steel and described antithesis magnetic conductor lay respectively at the both sides of described isolating seal sheet.
Described outer putting is fixed with the protective cover that covers described motor output shaft, described driving slide block and described driving magnet steel.
On described protective cover, have zero position switch hole.
Described linear electric motors adopt and run through axial linear motor.
Technique effect of the present invention is: the present invention is fixed on focusing lens in sliding sleeve, utilizes the rectilinear motion of linear electric motors, drives the movement of the focusing lens that is positioned at sliding sleeve, thereby realizes the intelligent automatic focusing of focusing lens; The present invention is simple in structure, accurate positioning, and precision is high, easy to operate, and efficiency is high.
Accompanying drawing explanation
Fig. 1 is perspective view of the present invention.
Fig. 2 is front view of the present invention.
Fig. 3 is the A-A cutaway view in Fig. 2.
The specific embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is further described.
In Fig. 1～Fig. 3, comprise linear electric motors 1, motor output shaft 2, driving slide block 3, drive magnet steel 4, antithesis magnetic conductor 5, sliding sleeve 6, focusing lens 7, rifle head to connect end cap 8, optical fiber laser connection end cap 9, isolating seal sheet 10, zero position switch hole 11, overcoat 12, protective cover 13, chute 14 etc.
As shown in FIG. 1 to 3, the present invention is a kind of intelligent focus control of laser Machining head, comprises the overcoat 12 of tubular.One end of overcoat 12 is fixed with rifle head and connects end cap 8, for the rifle head part with processing head, is connected, and its other end is fixed with optical fiber laser and connects end cap 9, for connecting the QBH quick plug of optical fiber laser.
On the outer wall of overcoat 12, be fixed with linear electric motors 1, linear electric motors 1 adopt and run through axial linear motor.The motor output shaft 2 of linear electric motors 1 is parallel to the axis of overcoat 12, is fixed with and drives slide block 3 on motor output shaft 2, drives on slide block 3 and is fixed with and drives magnet steel 4, drives magnet steel 4 to adopt Rb-Fe-B material.The protective cover 13 that is also fixed with and covers motor output shaft 2, drives slide block 3 and driving magnet steel 4 on overcoat 12, shields.On protective cover 13, have zero position switch hole 11, be used for installing Hall element.
In overcoat 12, be sliding combined with sliding sleeve 6, be fixed with and the antithesis magnetic conductor 5 that drives magnet steel 4 to match on the outer wall of sliding sleeve 6, focusing lens 7 is fixed in sliding sleeve 6.
On the outer wall of overcoat 12, have axial slide 14, in chute 14, be provided with isolating seal sheet 10, drive magnet steel 4 and antithesis magnetic conductor 5 to lay respectively at the both sides of isolating seal sheet 10.It is dustproof that isolating seal sheet 10 plays isolation.
The course of work of the present invention is as follows: linear electric motors 1 receive after the step-by-step impulse group and direction pulse signal that system sends, according to the umber of pulse of sending here and direction, require to start working, so the motor output shaft 2 of linear electric motors 1 is pushed out or is contracted, be fixed on the non magnetic slide block 3 of output shaft 2 axle heads along with output shaft 2 traveling priorities, on slide block 3, be fixed with and drive magnet steel 4, magnet steel 4 is when mobile, the magnetic line of force is through isolating seal sheet, pull the magnetic conductor 5 being fixed on focusing lens 7 sliding sleeves 6, drive sliding sleeve 6 to move for one, interior fixing focusing lens 7 synchronizing movings of while sliding sleeve 6, after reaching the position of setting, motor 1 stop motion, so focusing lens 7 is just fixed on the position needing.Due to motor output shaft 2, to utilize the screw thread being engraved on axle to realize straight-line, and lead on axle is minimum, have stronger motion self-lock ability, even if cut off the electricity supply, the position of setting can not change yet, so focusing lens 7 gets final product power-off after being moved to the focal length of setting, until while needing to change focus, during this period, needn't be to device power supply. next time
In order to make automatically to regulate focus accurate, in operation distance, be provided with the zero position switch being formed by Hall element, when adjusting program starts, first enter and look for former point process, after confirming zero point, then the theoretical umber of pulse of sending into original focus adds the side-play amount pulse of focus correction, to guarantee the accurate of automatic focusing.Due to the straight-line displacement of motor 1, depend on the working pulse that focusing system sends, so belong to open-loop control system.
Utilization of the present invention runs through the rectilinear motion of axial linear motor 1, drives the movement of the focusing lens 7 that is positioned at sliding sleeve 6, thereby realizes the intelligent automatic focusing of focusing lens.
The present invention has the following advantages: 1, simple in structure, accurate positioning can reach the positioning precision of 0.01mm when open loop drives.2, need not to power up be lockable in focal position, after power-off, can keep for a long time until focusing next time, so energy-conserving and environment-protective.While 3, moving due to eyeglass sliding sleeve, the coaxial error of center mechanical movement is less than 0.01mm, to optical axis, can not cause again substantial skew, therefore in the reformed front and back of focus, all do not affect the alignment of nozzle center hole and optical axis, after once optical axis concentricity being mixed up, centering again after focusing, brings great convenience to operator.4, whole adjustment process can be included system cutting technique database in, when operator is on system operation interface, selected after workpiece material and thickness to be processed, system retrieves the cutting technique database from system the data of the positive and negative side-play amount of focus automatically, then related data is delivered to automatically and controlled focussing movement servo component, focus just moves to corresponding position, thereby realizes the automatic adjusting of laser spot, realizes processing head laser spot and regulates intelligent.
Claims (1)
1. the intelligent focus control of a laser Machining head, comprise overcoat (12) and focusing lens (7), the two ends of described overcoat (12) are respectively arranged with rifle head and connect end cap (8) and optical fiber laser connection end cap (9), it is characterized in that: on the outer wall of described overcoat (12), be fixed with linear electric motors (1), the motor output shaft (2) of described linear electric motors (1) is parallel to the axis of described overcoat (12), on described motor output shaft (2), be fixed with and drive slide block (3), on described driving slide block (3), be fixed with and drive magnet steel (4); In described overcoat (12), be sliding combined with sliding sleeve (6), be fixed with the antithesis magnetic conductor (5) matching with described driving magnet steel (4) on described sliding sleeve (6), described focusing lens (7) is fixed in described sliding sleeve (6);
Described driving magnet steel (4) adopts Rb-Fe-B material;
On the outer wall of described overcoat (12), have axial slide (14), be provided with isolating seal sheet (10) in described chute (14), described driving magnet steel (4) and described antithesis magnetic conductor (5) lay respectively at the both sides of described isolating seal sheet (10);
On described overcoat (12), be fixed with the protective cover (13) that covers described motor output shaft (2), described driving slide block (3) and described driving magnet steel (4);
On described protective cover (13), have zero position switch hole (11);
Described linear electric motors (1) adopt and run through axial linear motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210205518.XA CN102699527B (en) | 2012-06-20 | 2012-06-20 | Intelligent focusing device of laser machining head |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210205518.XA CN102699527B (en) | 2012-06-20 | 2012-06-20 | Intelligent focusing device of laser machining head |
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| Publication Number | Publication Date |
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| CN102699527A CN102699527A (en) | 2012-10-03 |
| CN102699527B true CN102699527B (en) | 2014-12-10 |
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| CN201210205518.XA Active CN102699527B (en) | 2012-06-20 | 2012-06-20 | Intelligent focusing device of laser machining head |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015047606A1 (en) | 2013-09-30 | 2015-04-02 | Apple Inc. | Keycaps having reduced thickness |
| CN106271045A (en) * | 2016-09-05 | 2017-01-04 | 苏州大学 | A kind of automatic focusing adjustor for laser processing, laser process equipment and focus adjustment method |
| CN107138853A (en) * | 2017-07-07 | 2017-09-08 | 深圳市普盛激光设备有限公司 | A kind of focus control of laser cutting device |
| LU100783B1 (en) | 2018-04-25 | 2019-10-28 | Highyag Lasertechnologie Gmbh | MOTION CONTROL FOR LINEAR DRIVE OF LASER OPTICS |
| CN113319434A (en) * | 2021-06-28 | 2021-08-31 | 苏州赛腾精密电子股份有限公司 | Laser line width adjusting method and laser marking device |
| CN113467071B (en) * | 2021-07-27 | 2023-08-29 | 郑州光超医疗科技有限公司 | In-vivo tissue high-resolution optical scanning probe capable of focusing |
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| CN1775449A (en) * | 2005-11-30 | 2006-05-24 | 江苏大学 | Laser material processing machine tool |
| CN201483161U (en) * | 2009-06-19 | 2010-05-26 | 武汉三工光电设备制造有限公司 | Automatic focusing device |
| CN101913024A (en) * | 2010-08-24 | 2010-12-15 | 上海市激光技术研究所 | System and method for processing dynamic focusing scanning spot track of optical fiber laser or disk laser |
| CN102479651A (en) * | 2010-11-30 | 2012-05-30 | 中国科学院大连化学物理研究所 | Connecting rod for connecting deep ultraviolet laser and photoemission electron microscope (PEEM) |
| CN202655795U (en) * | 2012-06-20 | 2013-01-09 | 无锡创科源激光装备股份有限公司 | Intelligent focusing device of laser beam machining head |
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2012
- 2012-06-20 CN CN201210205518.XA patent/CN102699527B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1775449A (en) * | 2005-11-30 | 2006-05-24 | 江苏大学 | Laser material processing machine tool |
| CN201483161U (en) * | 2009-06-19 | 2010-05-26 | 武汉三工光电设备制造有限公司 | Automatic focusing device |
| CN101913024A (en) * | 2010-08-24 | 2010-12-15 | 上海市激光技术研究所 | System and method for processing dynamic focusing scanning spot track of optical fiber laser or disk laser |
| CN102479651A (en) * | 2010-11-30 | 2012-05-30 | 中国科学院大连化学物理研究所 | Connecting rod for connecting deep ultraviolet laser and photoemission electron microscope (PEEM) |
| CN202655795U (en) * | 2012-06-20 | 2013-01-09 | 无锡创科源激光装备股份有限公司 | Intelligent focusing device of laser beam machining head |
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| CN102699527A (en) | 2012-10-03 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: WUXI CHUANGKEYUAN LASER EQUIPMENT CO., LTD. Free format text: FORMER NAME: WUXI CKY LASER EQUIPMENT CO., LTD. |
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| CP03 | Change of name, title or address |
Address after: 214028 18 factory building, block 52, national hi tech Industrial Development Zone, Wuxi, Jiangsu Patentee after: Wuxi chuangkeyuan laser equipment Co., Ltd. Address before: 214028 Hanjiang Road, New District, Jiangsu, Wuxi, 52B-18 Patentee before: Wuxi Chuangkeyuan Laser Equipment Co., Ltd. |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Intelligent focusing device of laser machining head Effective date of registration: 20151225 Granted publication date: 20141210 Pledgee: Agricultural Bank of China Limited by Share Ltd Wuxi science and Technology Branch Pledgor: Wuxi chuangkeyuan laser equipment Co., Ltd. Registration number: 2015990001158 |
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| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 214028 18 factory building, block 52, national hi tech Industrial Development Zone, Wuxi, Jiangsu Patentee after: Jiangsu Yawei Chuangkeyuan Laser Equipment Co., Ltd. Address before: 214028 18 factory building, block 52, national hi tech Industrial Development Zone, Wuxi, Jiangsu Patentee before: Wuxi chuangkeyuan laser equipment Co., Ltd. |