CN203380512U - Laser welding machine provided with device automatically eliminating thermal lens effect of solid state laser - Google Patents
Laser welding machine provided with device automatically eliminating thermal lens effect of solid state laser Download PDFInfo
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- CN203380512U CN203380512U CN201320036233.8U CN201320036233U CN203380512U CN 203380512 U CN203380512 U CN 203380512U CN 201320036233 U CN201320036233 U CN 201320036233U CN 203380512 U CN203380512 U CN 203380512U
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Abstract
The utility model relates to a laser welding machine provided with a device automatically eliminating thermal lens effect of a solid state laser. The laser welding machine comprises a laser generator system, a thermal lens compensation system, and a laser focusing system in a sequential connection, the laser generator system comprises a laser generator, a holophote and a laser output mirror, the holophote is connected on a laser output end of the laser generator, the laser output mirror is connected with the other end of the laser generator, the thermal lens compensation system may comprise a servo motor, a focusing ocular lens, and a focusing objective lens, the focusing ocular lens and the focusing objective lens are sequentially connected on a servo transmission shaft of the servo motor in a direct or indirect way, the laser focusing system may comprise a 45-degree reflector and a focusing mirror, and the focusing mirror is disposed below the 45-degree reflector. The laser welding machine prevents drifting of focuses after laser focusing, achieves welding consistency, and guarantees product quality.
Description
Technical field
The utility model relates to a kind of lamp pump Solid State Laser solder technology, is specifically related to a kind of laser-beam welding machine with automatic elimination solid state laser thermal lensing effect device.
Background technology
Laser weld is a kind of novel processing mode, utilizes high-octane laser pulse to carrying out local heat in the rapidoprint tiny area and dissolving, and the powerful energy of laser emission conducts the diffusion inside to material by heat, and material is dissolved and reaches the laser weld purpose.Because the material that will weld at present has battery, lug, mobile phone, digital camera, computer, a series of sci-tech product such as electric capacity, do not need large laser power, only needs precision and reliable means of spot welds.
The existing YAG of existing market (yttrium-aluminium-garnet) is at the YAG of the following middle low power of 150W laser.(except the reciprocal feedback of energy YAG) has a unconquerable problem is exactly that thermal lens causes focus drifting, makes to weld the sheeting degradation, and percent defective increases, and is difficult to meet volume production.If use the reciprocal feedback of energy YAG to deal with problems, but cost of investment has increased 3-4 doubly, cause the cost manufactured a product to increase, and lose the market competitiveness.
The utility model content
The utility model is for overcoming existing problem, and a kind of laser-beam welding machine with automatic elimination solid state laser thermal lensing effect device is provided, and this bonding machine makes the Laser Focusing back focus can not drift about, and reaches the welding uniformity, has guaranteed product quality.
A kind of laser-beam welding machine with automatic elimination solid state laser thermal lensing effect device of the utility model, comprise the laser generator system be linked in sequence, thermal-lensing compensation system and laser focusing system, described laser generator system connects described laser focusing system by described thermal-lensing compensation system.
Described laser generator system comprises laser generator, completely reflecting mirror and laser output mirror, and described completely reflecting mirror is connected to the laser output of described laser generator, and described laser output mirror is connected to the other end of described laser generator.
Described thermal-lensing compensation system can comprise servomotor, focusing eyepiece and focusing object lens, and described focusing eyepiece and focusing object lens directly or indirectly are linked in sequence on the servo drive axle of described servomotor.
Described laser focusing system can comprise 45 degree speculum and focus lamps, and described focus lamp is placed in the below of described 45 degree speculums.
Laser-beam welding machine with automatic elimination solid state laser thermal lensing effect device described above, can also be included as the laser power system that described laser generator system provides electric flux.
It also comprises laser control system, and the control end of described laser control system connects the control input end of the servo drive axle of described servomotor.
Described laser generator preferably adopts golden chamber and/or resonator to do Laser output.
After laser-beam welding machine Laser output with automatic elimination solid state laser thermal lensing effect device of the present utility model by crucial thermal-lensing compensation system, this thermal-lensing compensation system can be regulated eyepiece and object lens automatically according to the size of power, make the Laser Focusing back focus can not drift about, reach the welding uniformity, guaranteed product quality;
Described thermal-lensing compensation system and power form interaction, by the thermal focal curve of measuring laser, are input in laser control system, realize the auto-compensation of thermal lens, are convenient to implement precision welding.
Relevant detailed content of the present utility model and technology, hereby just coordinate accompanying drawing to be described as follows.
The accompanying drawing explanation
Fig. 1, be structural representation of the present utility model;
Fig. 2, be workflow diagram of the present utility model;
Fig. 3, be the curve map of the focal power of a kind of preferred embodiment of the utility model;
Fig. 4, be the curve map of the thermal focal of a kind of preferred embodiment of the utility model.
The specific embodiment
Please refer to shown in Fig. 1 and Fig. 2, the preferred embodiment that there is the laser-beam welding machine of automatic elimination solid state laser thermal lensing effect device for the utility model is a kind of, in the present embodiment, this laser-beam welding machine with automatic elimination solid state laser thermal lensing effect device comprises the laser generator system be linked in sequence, thermal-lensing compensation system and laser focusing system, the laser of described laser generator system output is input to described laser focusing system by described thermal-lensing compensation system.Owing to passing through the thermal-lensing compensation system after Laser output, make the Laser Focusing back focus can not drift about, reach the welding uniformity, guaranteed product quality.
Described laser generator system comprises laser generator 1, completely reflecting mirror 2 and laser output mirror 3, described completely reflecting mirror is connected to the laser output of described laser generator, described laser output mirror is connected to the other end of described laser generator, and the laser that described laser generator sends is through exporting by described laser output mirror after the total reflection of described completely reflecting mirror.
Described thermal-lensing compensation system can comprise servomotor 4, focusing eyepiece 5 and focusing object lens 6, (for example can also drive the focal length that the eyepiece mechanical drive shaft is regulated eyepiece and object lens by servomotor) on the servo drive axle 7 of described servomotor and be linked in sequence described focusing eyepiece and focusing object lens directly or indirectly.Laser control system can be regulated eyepiece and object lens automatically according to the Laser Power Devices parameter arranged, to realize the auto-compensation of thermal lens.
Described laser focusing system can comprise 45 degree speculums 8 and focus lamp 9, and described focus lamp is placed in the below of described 45 degree speculums.Laser through described focusing object lens output is spent the vertical reflection of speculums afterwards by described focus lamp output, for laser weld by described 45.
Laser-beam welding machine with automatic elimination solid state laser thermal lensing effect device described above, can also be included as the laser power system that described laser generator system provides electric flux.
It also comprises laser control system, and the control end of described laser control system connects the control input end of the servo drive axle of described servomotor.
Described laser generator preferably adopts golden chamber and/or resonator to do the output of lasing light emitter, so that the feedback cavity of luminous energy high-quality is provided.
As shown in Figure 3 and Figure 4, be respectively the curve map of focal power and thermal focal, the theoretical foundation of thermal-lensing compensation: take diameter as 6,7, the laser bar of 8 millimeters is example, according to mid power focal power empirical equation: Df ≈ β * P
e/ π r
2, β=0.023, wherein r is the laser bar radius, P
efor injecting power, the thermal lens of laser bar is only relevant with diameter, and length is irrelevant.
The test that is 6.7.8 millimeter laser bar to diameter from Fig. 3, Fig. 4, can find out that injecting power is larger, the laser bar thermal focal is less, this explanation laser bar face deformation convex surface is larger, it is large that the Laser output angle of divergence becomes, and laser bar only has the laser injecting power to change after determining, thermal focal also can change, focus after Laser Focusing also can change, and this phenomenon is thermal lensing effect.We change the angle of divergence of Laser output according to laser power dynamic adjustments beam expanding lens eyepiece, thereby guarantee that the focus after Laser Focusing does not change.
As the user in welding during a certain product, the user can arrange relevant source of welding current parameter, due to the curve that has recorded in advance source of welding current focal length variations rule when the different capacity, change curve is enrolled in laser control system, therefore the user in use, laser control system can be regulated eyepiece and object lens automatically according to the Laser Power Devices parameter arranged, thereby guarantees the uniformity of focal length, thereby has guaranteed welding quality.
Claims (7)
1. the laser-beam welding machine with automatic elimination solid state laser thermal lensing effect device, it is characterized in that: comprise the laser generator system be linked in sequence, thermal-lensing compensation system and laser focusing system, described laser generator system connects described laser focusing system by described thermal-lensing compensation system.
2. the laser-beam welding machine with automatic elimination solid state laser thermal lensing effect device according to claim 1, it is characterized in that: described laser generator system comprises laser generator, completely reflecting mirror and laser output mirror, described completely reflecting mirror is connected to the laser output of described laser generator, and described laser output mirror is connected to the other end of described laser generator.
3. the laser-beam welding machine with automatic elimination solid state laser thermal lensing effect device according to claim 1, it is characterized in that: described thermal-lensing compensation system comprises servomotor, focusing eyepiece and focusing object lens, described focusing eyepiece and focusing object lens directly or indirectly are linked in sequence on the servo drive axle of described servomotor.
4. the laser-beam welding machine with automatic elimination solid state laser thermal lensing effect device according to claim 1, it is characterized in that: described laser focusing system comprises 45 degree speculum and focus lamps, described focus lamp is placed in the below of described 45 degree speculums.
5. according to claim 1,2, the 3 or 4 described laser-beam welding machines with automatic elimination solid state laser thermal lensing effect device, it is characterized in that: also be included as the laser power system that described laser generator system provides electric flux.
6. the laser-beam welding machine with automatic elimination solid state laser thermal lensing effect device according to claim 3, it is characterized in that: also comprise laser control system, the control end of described laser control system connects the control input end of the servo drive axle of described servomotor.
7. the laser-beam welding machine with automatic elimination solid state laser thermal lensing effect device according to claim 6, it is characterized in that: described laser generator adopts golden chamber and/or resonator to do Laser output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320036233.8U CN203380512U (en) | 2013-01-22 | 2013-01-22 | Laser welding machine provided with device automatically eliminating thermal lens effect of solid state laser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320036233.8U CN203380512U (en) | 2013-01-22 | 2013-01-22 | Laser welding machine provided with device automatically eliminating thermal lens effect of solid state laser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203380512U true CN203380512U (en) | 2014-01-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320036233.8U Expired - Fee Related CN203380512U (en) | 2013-01-22 | 2013-01-22 | Laser welding machine provided with device automatically eliminating thermal lens effect of solid state laser |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104174993A (en) * | 2013-05-23 | 2014-12-03 | 深圳市通发激光设备有限公司 | Laser-beam welding machine with device for automatically removing thermal lens effect of solid laser |
| CN105983781A (en) * | 2015-07-08 | 2016-10-05 | 深圳市普达镭射科技有限公司 | Control system capable of increasing YAG laser welding quality |
| CN109799075A (en) * | 2019-02-22 | 2019-05-24 | 苏州迅镭激光科技有限公司 | The measuring device and measuring method of thermal lens focal variation in a kind of laser Machining head |
-
2013
- 2013-01-22 CN CN201320036233.8U patent/CN203380512U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104174993A (en) * | 2013-05-23 | 2014-12-03 | 深圳市通发激光设备有限公司 | Laser-beam welding machine with device for automatically removing thermal lens effect of solid laser |
| CN105983781A (en) * | 2015-07-08 | 2016-10-05 | 深圳市普达镭射科技有限公司 | Control system capable of increasing YAG laser welding quality |
| CN109799075A (en) * | 2019-02-22 | 2019-05-24 | 苏州迅镭激光科技有限公司 | The measuring device and measuring method of thermal lens focal variation in a kind of laser Machining head |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140108 Termination date: 20160122 |
|
| EXPY | Termination of patent right or utility model |