CN111229737B - Handheld laser cleaning dynamic compensation device - Google Patents
Handheld laser cleaning dynamic compensation device Download PDFInfo
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- CN111229737B CN111229737B CN202010071048.7A CN202010071048A CN111229737B CN 111229737 B CN111229737 B CN 111229737B CN 202010071048 A CN202010071048 A CN 202010071048A CN 111229737 B CN111229737 B CN 111229737B
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- 238000004140 cleaning Methods 0.000 title claims abstract description 46
- 230000008859 change Effects 0.000 claims abstract description 6
- 238000012544 monitoring process Methods 0.000 claims 1
- 230000004075 alteration Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 230000003746 surface roughness Effects 0.000 description 2
- 241000283070 Equus zebra Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B7/00—Cleaning by methods not provided for in a single other subclass or a single group in this subclass
- B08B7/0035—Cleaning by methods not provided for in a single other subclass or a single group in this subclass by radiant energy, e.g. UV, laser, light beam or the like
- B08B7/0042—Cleaning by methods not provided for in a single other subclass or a single group in this subclass by radiant energy, e.g. UV, laser, light beam or the like by laser
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B13/00—Accessories or details of general applicability for machines or apparatus for cleaning
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Abstract
The invention discloses a handheld laser cleaning dynamic compensation device, which comprises a laser transmitter, a collimating lens, a zoom lens group, a vibrating lens and a field lens, wherein laser is output by the laser transmitter and sequentially processed by the collimating lens, the zoom lens group, the vibrating lens and the field lens; a distance sensor is arranged on the field lens shell; the zoom lens group comprises a zoom lens and a fixed lens which are arranged in parallel, the zoom lens is connected with a first power device, the zoom lens and the first power device form a distance compensation system, the first power device drives the zoom lens to move along the propagation direction of the laser beam, and the state of the zoom lens group is changed to change the focusing position of the laser beam on the surface of a workpiece to be cleaned; the distance sensor is connected with the controller, the controller is connected with the first power device, the controller receives distance information from the distance sensor and feeds the distance information back to the first power device of the zoom lens group to control the zoom lens, and automatic focusing distance adjustment is achieved.
Description
Technical Field
The utility model belongs to the technical field of hand-held type laser cleaning, concretely relates to hand-held type laser cleaning dynamic compensation arrangement.
Background
The laser cleaning technology is a novel cleaning technology which is rapidly developed in the last decade, and can be suitable for cleaning various surface dirt, has the advantages of little environmental pollution, little damage to a substrate and the like, and gradually replaces the traditional surface treatment cleaning technology in many fields. The handheld laser cleaning equipment has high flexibility, can well meet the requirements of cleaning conditions of small range, multiple varieties and frequent site change, and can be widely used for cleaning in situ the mounted components.
However, when the handheld laser cleaning device is used for operation, the working distance between the device and a workpiece to be processed is difficult to accurately position, the phenomenon that obvious color difference marks (commonly called zebra stripes) appear on the surface of the workpiece due to inconsistent distance between the device and the workpiece or uneven scanning speed in the working process is substantially caused, the surface roughness is seriously changed, the surface quality is seriously reduced, and even the damage of a substrate can be caused.
Disclosure of Invention
The present disclosure aims to overcome the above-mentioned deficiencies of the prior art and provide a handheld laser cleaning dynamic compensation device; the dynamic compensation device adopts a mode of combining working distance and galvanometer scanning compensation to reduce obvious chromatic aberration marks on the surface of a workpiece caused by inconsistent distance between equipment and the workpiece or nonuniform scanning speed in the working process and the matrix damage phenomenon caused by repeated cleaning.
The invention aims to provide a handheld laser cleaning dynamic compensation device, which adopts the following technical scheme for realizing the aim:
a hand-held laser cleaning dynamic compensation device comprises a laser emitter, a collimating lens, a zoom lens group, a vibrating lens and a field lens, wherein laser is output by the laser emitter and sequentially processed by the collimating lens, the zoom lens group, the vibrating lens and the field lens, and the field lens converges laser beams to a workpiece to be cleaned;
the field lens shell is provided with a distance sensor for detecting the working distance from the field lens to the workpiece to be cleaned;
the laser cleaning device comprises a laser beam, a variable focal length lens group, a variable focal length lens, a first power device, a second power device, a distance compensation system and a control system, wherein the variable focal length lens and the fixed lens are arranged in parallel;
the controller receives distance information from the distance sensor, feeds the distance information back to the first power device of the zoom lens group, controls the zoom lens and realizes automatic focusing distance adjustment.
As a further technical scheme, the vibrating mirror comprises a reflecting mirror, the reflecting mirror is connected with a second power device, the reflecting mirror and the second power device form a scanning speed compensation system, the second power device drives the reflecting mirror to rotate to change the direction of the reflecting mirror, and laser is irradiated on the surface of a workpiece to be cleaned in a surface or line mode.
As a further technical scheme, a position sensor is installed on the field lens shell and used for detecting the parallel moving speed of the field lens and the workpiece to be cleaned.
As a further technical scheme, the position sensor is connected with the controller, the controller is connected with the second power device, the controller receives the moving speed information from the position sensor and feeds the moving speed information back to the second power device to control the scanning speed of the galvanometer, and the function of automatically adjusting the scanning speed is realized.
As a further technical scheme, the first power device and the second power device are both motors, and are provided with corresponding mechanical structures to move the zoom lens and deflect the reflector.
As a further technical scheme, the zoom lens and the fixed lens are arranged in parallel with the collimating lens.
As a further technical scheme, the controller is further connected with the display and the alarm, when the distance between the field lens and the workpiece to be cleaned exceeds the limit compensation distance of the distance compensation system, the first power device stops moving, signals are transmitted to the controller, and the display and the alarm remind an operator.
As a further technical scheme, the controller is further connected with the display and the alarm, when the horizontal moving speed between the field lens and the workpiece to be cleaned exceeds the compensation limit of the scanning speed compensation system, the second power device stops moving, signals are transmitted to the controller, and the display and the alarm remind an operator.
As a further technical scheme, the field lens is arranged below the galvanometer, and the parallel light beams reflected by the galvanometer are converged on the surface of a workpiece to be cleaned to clean the workpiece.
As a further technical scheme, the distance sensor is a non-contact distance sensor, and the distance between the field lens and the surface of the workpiece to be cleaned is monitored.
As a further technical scheme, the position sensor is a non-contact position sensor, and the parallel position of the field lens relative to the surface of the workpiece to be cleaned is monitored.
The working principle of the dynamic compensation device is as follows:
the handheld laser cleaning can cause the distance between equipment and a workpiece to be cleaned due to the instability of handheld motion, and the change of the horizontal motion speed of the equipment causes uneven cleaning and easy color difference marks.
The dynamic compensation device is provided with a distance sensor for detecting the working distance from a field lens to a workpiece to be cleaned; the distance sensor is connected with the controller, the controller is connected with the first power device, the controller receives distance information from the distance sensor, the distance information is fed back to the first power device of the zoom lens group, the zoom lens is controlled, a distance compensation system is formed, and the function of automatically adjusting the focusing distance is achieved.
The dynamic compensation device is provided with a position sensor for detecting the parallel moving speed of a field lens and a workpiece to be cleaned, the position sensor is connected with a controller, the controller is connected with a second power device of the vibrating mirror, the controller receives moving speed information from the position sensor and feeds the moving speed information back to the second power device of the vibrating mirror, and the second power device controls the scanning speed of a reflector of the vibrating mirror to form a scanning speed compensation system, so that the function of automatically adjusting the scanning speed is realized.
The controller is also connected with the display and the alarm, when the distance between a field lens in the handheld laser cleaning equipment and a workpiece to be cleaned exceeds the compensation distance of the distance compensation system, the first power device stops compensation, transmits a signal to the controller, and reminds an operator to manually adjust through the display and the alarm; when the parallel moving speed of a field lens and a workpiece to be cleaned in the handheld laser cleaning equipment exceeds the compensation limit of the scanning speed compensation system, the second power device stops compensation, transmits a signal to the controller, and reminds an operator to manually adjust through the display and the alarm.
The beneficial effect of this disclosure does:
the dynamic compensation device disclosed by the invention adopts a mode of combining a working distance compensation light path design and a human-computer interaction system to adjust and monitor the working distance in real time, so that the phenomena that obvious chromatic aberration marks appear on the surface of a workpiece and a matrix is damaged due to repeated cleaning caused by inconsistent distance between equipment and the workpiece or nonuniform scanning speed in the working process are reduced.
According to the dynamic compensation device, the focal length of the zoom lens group is changed, so that the compensation of the working distance between the field lens and the workpiece to be cleaned is completed, the scanning speed of the galvanometer reflector is adjusted to enable the light beam to uniformly clean the surface of the workpiece, the cleaning quality and efficiency are improved, and the problem of chromatic aberration defect caused by inaccurate handheld positioning is solved; compared with the field lens adjusting scheme, the laser cleaning device has the advantages of simple structure and strong anti-interference capability, can improve the laser cleaning efficiency and quality, and can meet the cleaning operation requirements of aerospace components.
The dynamic compensation device is provided with display and prompt equipment, and assists manual adjustment according to distance and position information display, so that man-machine interaction is realized, and precision cleaning operation is completed.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.
Fig. 1 is a schematic diagram of an overall structure of a dynamic compensation device disclosed in an embodiment of the present disclosure;
FIG. 2 is a schematic view of a galvanometer structure with two mirrors as disclosed in an embodiment of the present disclosure;
in the figure, 1, a laser transmitter; 2. a collimating mirror; 3. a zoom lens; 4. fixing the mirror; 5. a mirror; 6. a field lens; 7. a distance sensor; 8. a controller; 9. a workpiece to be cleaned; 10. a motor; 11. a position sensor; 12. a motor; 13. a zoom lens group; 14. a galvanometer; 15. a first motor; 16. a first reflecting mirror; 17. a second motor; and 18, mirror two.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an", and/or "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof;
for convenience of description, the words "up", "down", "left" and "right" in this disclosure, if any, merely indicate correspondence with up, down, left and right directions of the drawings themselves, and do not limit the structure, but merely facilitate description of the disclosure and simplify description, rather than indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the disclosure. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
As described in the background art, the inventor finds that, during operation of the handheld laser cleaning device, due to inconsistent distance between the device and the workpiece or uneven scanning speed during the operation, obvious color difference marks appear on the surface of the workpiece, which substantially cause serious changes in surface roughness, serious degradation of surface quality, and even possible damage to a substrate.
The application provides a handheld laser cleaning dynamic compensation device, which comprises a laser transmitter, a collimating lens, a zoom lens group, a vibrating lens and a field lens, wherein laser is output by the laser transmitter and sequentially processed by the collimating lens, the zoom lens group, the vibrating lens and the field lens;
the field lens shell is provided with a distance sensor for detecting the working distance from the field lens to the workpiece to be cleaned;
the laser cleaning device comprises a laser beam, a variable focal length lens group, a variable focal length lens, a first power device, a second power device, a distance compensation system and a control system, wherein the variable focal length lens and the fixed lens are arranged in parallel;
the controller receives distance information from the distance sensor, feeds the distance information back to the first power device of the zoom lens group, controls the zoom lens and realizes automatic focusing distance adjustment.
The compensation device disclosed in this embodiment is further described with reference to fig. 1;
referring to fig. 1, the hand-held laser cleaning dynamic compensation device includes a laser emitter 1, a collimating lens 2, a zoom lens group 13, a vibrating lens 15, a field lens 6, a controller 8, a distance sensor 7 and a position sensor 11, wherein a laser beam output by the laser emitter 1 passes through the collimating lens 2, the zoom lens group 13 and the vibrating lens 14 in sequence, and the field lens 6 converges the laser beam to a workpiece 9 to be cleaned;
the collimator lens 2 converts the laser beam emitted from the laser emitter 1 into a parallel beam.
The zoom lens group 13 is composed of a zoom lens 3 and a fixed lens 4, the zoom lens 3 and the fixed lens 4 are arranged in parallel with the collimating lens 2, and the fixed lens 4 is arranged in front of the zoom lens 3 along the light beam transmission direction; the bottom of the zoom lens 3 is mounted on a motor 12, the motor 12 is controlled by a controller 8, and the zoom lens 3 is driven by the motor 12 (both a servo motor and a stepping motor, corresponding to the first power device in the disclosure) to move (move back and forth) along the light propagation direction of the zoom lens, so as to change the focal length of the zoom lens group 13, thereby completing the compensation of the distance between the field lens 6 and the workpiece 9 to be cleaned.
The distance sensor 7 is a non-contact distance sensor, the distance sensor 7 is installed on the outer side of the field lens 6 and used for detecting the working distance from the field lens 6 to the surface of the workpiece 9 to be cleaned, signals are transmitted to the controller 8, the controller 8 controls the motor 12 to move the zoom lens 3, the focal length of the zoom lens group 13 is adjusted, and real-time compensation of the working distance is achieved.
The galvanometer 14 is a special device in laser processing and cleaning, wherein one or two independent reflectors 5 are provided, the reflectors 5 are fixed on independent motors 10 (both servo motors and stepping motors can be used, and correspond to the second power device in the invention), the motors 10 are controlled by a controller 8, and the galvanometer 14 with one reflector 5 is used for position compensation along the manual handheld push-scanning direction in the embodiment as an example; the galvanometer structure with two reflectors is shown in fig. 2, and is provided with a first motor 15, a first reflector 16, a second motor 17 and a second reflector 18, wherein the two reflectors are driven to rotate by the two motors respectively.
The position sensor 11 adopts a non-contact position sensor, the position sensor 11 is arranged on the outer side of the field lens 6 and used for detecting the parallel moving speed of the field lens 6 and the workpiece 9 to be cleaned, the position sensor 11 is connected with the controller 8, the controller 2 is connected with the motor 10, the controller receives moving speed information from the position sensor 11 and feeds the moving speed information back to the motor 10, and the motor 10 changes the scanning speed of the reflector 5, so that the function of automatic compensation and adjustment of the scanning speed is realized.
The controller 8 is also connected with a display and an alarm, when the distance between a field lens 6 in the handheld laser cleaning equipment and a workpiece 9 to be cleaned exceeds the limit compensation distance of a distance compensation system consisting of a zoom lens 3 and a motor 12, the motor 12 stops compensation, transmits a signal to the controller 8, and reminds an operator of manual adjustment through the display and the alarm; when the parallel moving speed of a field lens 6 and a workpiece 9 to be cleaned in the handheld laser cleaning equipment exceeds the compensation limit of a scanning speed compensation system consisting of a motor 10 in a galvanometer 14, the motor 10 stops compensation, transmits a signal to a controller 8, and reminds an operator of manual adjustment through a display and an alarm.
The compensation device disclosed by the invention can be used for completing the compensation of the working distance between the field lens and the workpiece to be cleaned by changing the focal length of the zoom lens group, adjusting the scanning speed of the galvanometer reflector to enable the light beam to uniformly clean the surface of the workpiece, improving the cleaning quality and efficiency, solving the problem of chromatic aberration trace defect in the handheld laser cleaning process and promoting the technical progress in the related field.
Although the present disclosure has been described with reference to specific embodiments, it should be understood that the scope of the present disclosure is not limited thereto, and those skilled in the art will appreciate that various modifications and changes can be made without departing from the spirit and scope of the present disclosure.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (8)
1. A hand-held laser cleaning dynamic compensation device is characterized by comprising a laser emitter, a collimating lens, a zoom lens group, a vibrating lens and a field lens, wherein laser is output by the laser emitter and sequentially processed by the collimating lens, the zoom lens group, the vibrating lens and the field lens, and the field lens converges laser beams to a workpiece to be cleaned;
the field lens shell is provided with a distance sensor for detecting the working distance from the field lens to the workpiece to be cleaned;
the laser cleaning device comprises a laser beam, a variable focal length lens group, a variable focal length lens, a first power device, a second power device, a distance compensation system and a control system, wherein the variable focal length lens and the fixed lens are arranged in parallel;
the controller receives distance information from the distance sensor, feeds the distance information back to the first power device of the zoom lens group, controls the zoom lens and realizes automatic focusing distance adjustment;
the vibrating mirror comprises a reflecting mirror, and the reflecting mirror is connected with a second power device;
the field lens shell is provided with a position sensor for detecting the parallel moving speed of the field lens and the workpiece to be cleaned; the position sensor is connected with the controller, the controller is connected with the second power device, the controller receives the moving speed information from the position sensor and feeds the moving speed information back to the second power device, the scanning speed of the galvanometer is controlled, and the function of automatically adjusting the scanning speed is realized;
the field lens is arranged below the vibrating mirror, and the parallel light beams reflected by the vibrating mirror are converged on the surface of a workpiece to be cleaned to clean the workpiece.
2. The hand-held laser cleaning dynamic compensation device as claimed in claim 1, wherein the reflecting mirror and the second power device form a scanning speed compensation system, and the second power device drives the reflecting mirror to rotate to change the direction of the reflecting mirror, so as to realize that the laser irradiates the surface of the workpiece to be cleaned in a surface or line mode.
3. The hand-held laser cleaning dynamic compensation device of claim 1, wherein the controller is further connected to a display and an alarm, and when the horizontal movement speed between the field lens and the workpiece to be cleaned exceeds the compensation limit of the scan speed compensation system, the second power device stops moving and transmits a signal to the controller to alert an operator through the display and the alarm.
4. The hand-held laser cleaning dynamic compensation device of claim 1, wherein the controller is further connected to a display and an alarm, and when the distance between the field lens and the workpiece to be cleaned exceeds the limit compensation distance of the distance compensation system, the first power device stops moving and transmits a signal to the controller to remind an operator through the display and the alarm.
5. The hand-held laser cleaning dynamic compensation apparatus of claim 1, wherein the first power device and the second power device are both motors with corresponding mechanical structures for moving the zoom lens and deflecting the mirror of the galvanometer.
6. The hand-held laser cleaning dynamic compensation apparatus of claim 1, wherein the zoom lens and the fixed lens are both disposed parallel to the collimating lens.
7. The hand-held laser cleaning dynamic compensation device of claim 1, wherein the distance sensor is a non-contact distance sensor to monitor the distance between the field lens and the surface of the workpiece to be cleaned.
8. The hand-held laser cleaning dynamic compensation apparatus of claim 1 wherein the position sensor is a non-contact position sensor that enables monitoring of the parallel position of the field lens relative to the surface of the workpiece to be cleaned.
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| CN202010071048.7A CN111229737B (en) | 2020-01-21 | 2020-01-21 | Handheld laser cleaning dynamic compensation device |
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| CN202010071048.7A CN111229737B (en) | 2020-01-21 | 2020-01-21 | Handheld laser cleaning dynamic compensation device |
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| CN111229737B true CN111229737B (en) | 2021-04-02 |
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| CN112246782B (en) * | 2020-08-19 | 2022-04-12 | 厦门理工学院 | Laser cleaning head |
| TWI746220B (en) * | 2020-10-21 | 2021-11-11 | 財團法人工業技術研究院 | Laser cleaning apparatus and method |
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| CN114789168B (en) * | 2021-01-25 | 2023-10-20 | 大族激光科技产业集团股份有限公司 | Laser cleaning system and cleaning method |
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| CN113210361B (en) * | 2021-05-27 | 2022-02-22 | 中国工程物理研究院激光聚变研究中心 | Automatic focusing laser cleaning output device and output method |
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| CN115625156B (en) * | 2022-11-11 | 2024-08-02 | 中国科学院西安光学精密机械研究所 | Large-breadth laser cleaning device and method |
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