CN207289196U - A kind of laser processing unit (plant) of adjustable light beam - Google Patents
A kind of laser processing unit (plant) of adjustable light beam Download PDFInfo
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- CN207289196U CN207289196U CN201720694512.1U CN201720694512U CN207289196U CN 207289196 U CN207289196 U CN 207289196U CN 201720694512 U CN201720694512 U CN 201720694512U CN 207289196 U CN207289196 U CN 207289196U
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- laser
- workbench
- ccd camera
- speculum
- plant
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- 238000012545 processing Methods 0.000 title claims abstract description 34
- 238000003698 laser cutting Methods 0.000 claims abstract description 15
- 230000003287 optical effect Effects 0.000 claims abstract description 10
- 239000011521 glass Substances 0.000 claims abstract description 8
- 230000001681 protective effect Effects 0.000 claims abstract description 8
- 238000001914 filtration Methods 0.000 claims 1
- 239000000463 material Substances 0.000 description 11
- 238000003754 machining Methods 0.000 description 7
- 210000004204 blood vessel Anatomy 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 241000196324 Embryophyta Species 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 241000931526 Acer campestre Species 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000000608 laser ablation Methods 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 238000012805 post-processing Methods 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 210000001367 artery Anatomy 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 208000037803 restenosis Diseases 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
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Abstract
The utility model discloses a kind of laser processing unit (plant) of adjustable light beam, belongs to laser processing device technical field, easily the tubular object extruding area size of intravascular stent is controlled, and stability is good, and precision is high, energy-saving.Including ultrafast laser, ultrafast laser isolator, the beam expander of pancratic magnification, speculum, condenser lens, protective glass, laser cutting nozzle, workbench, optical filter, CCD camera and control unit, the laser of the ultrafast laser output is successively through ultrafast laser isolator, the beam expander of pancratic magnification, speculum, condenser lens, it is radiated at after protective glass and laser cutting nozzle on the workspace of workbench, the control terminal of the CCD camera and beam expander is connected with control unit respectively, the camera lens of the CCD camera is arranged towards the workspace of workbench, the optical filter is arranged between speculum and CCD camera.
Description
Technical field
It the utility model is related to laser processing device technical field, and in particular to a kind of laser processing dress of adjustable light beam
Put.
Background technology
Every year in million intravascular stents of whole world implantation number to treat the various blood vessels as caused by narrowed blood vessels or obstruction
With intravascular disease.Laser plays a crucial role in the manufacture of implantable medical device.Pass through their accurate control, laser
Material can be effectively machined for the complicated and accurate geometry needed for these implantable medical devices.
Early stage intravascular stent is made of stainless steel, relatively large, and part geometry and feature tolerances are for ± 25 μm or more
Greatly.Laser cutting, using the pulsed infrared laser of nanosecond duration, it is easy to meet that the machining accuracy in this rank is wanted
Ask.However, the thermal interaction of nanosecond laser pulses and material, it is not high to typically result in the surface smoothness of metal parts, easily goes out
Existing burr, fusing and double teeming are common.In addition, the heat deposition in material causes the narrow heat affecting bordered on cut edge
Area.In heat affected area, material character or composition are changed.
These effects mean that laser cutting technique can be only extended to the production of volume stent, and exploitation and improvement therein are
Costly and time-consuming post-processing step removes Roughen Edges.Make product cleaning, deburring, etching and final polishing, so that stent
Surface nature reach level and uniformity needed for implantable device.Femto-second laser realizes new size and material in recent years
Material, implantable medical devices become to become increasingly complex, and use more difficult to machine material.For example, stent is currently used for having
The peripheral arterial of small size.
Another trend is to add controlled surface texture or geometry to stent and prosthese to improve biocompatibility, example
Such as to reduce the risk of restenosis.The new material of biological absorbable adds another dimension for the challenge for manufacturing these devices.
Femtosecond laser is to be used for these hyperfine structures of implantable medical device and the enabling tool of new material of new generation for micro Process.
The pulse duration of femto-second laser is 100,000 times shorter than the pulse duration of conventional nanosecond laser.Use these ultrashort arteries and veins
Punching, laser energy enter material and are left before expanding plasma, and then it can be transmitted as heat in material.As a result
Commonly known as " cold " or " no heat " laser ablation.Its significant feature is that the very clean micron order mechanical processing that it is produced is special
Sign, usually not burr, fusing, double teeming and heat affected area.
Utility model content
The utility model is to solve the tubular object extruding area that existing laser processing device has intravascular stent not easy to control
The deficiency of size, there is provided a kind of to be easily controlled to the tubular object extruding area size of intravascular stent, stability is good, the high one kind of precision
The laser processing unit (plant) of adjustable light beam.
Above technical problem is solved by following technical proposal：
A kind of laser processing unit (plant) of adjustable light beam, including ultrafast laser, ultrafast laser isolator, pancratic magnification
Beam expander, speculum, condenser lens, protective glass, laser cutting nozzle, workbench, optical filter, CCD camera and control it is single
Member, the laser of ultrafast laser output is successively through the ultrafast laser isolator, beam expander of pancratic magnification, speculum, poly-
It is radiated at after focus lens, protective glass and laser cutting nozzle on the workspace of workbench, the control of the CCD camera and beam expander
End processed is connected with control unit respectively, and the camera lens of the CCD camera is arranged towards the workspace of workbench, the optical filter cloth
Put between speculum and CCD camera.
Ultrafast laser is femto-second laser or is picosecond laser.Ultrafast laser isolator ensures the stabilization work of laser
Make.The beam expander of pancratic magnification is used for the size for adjusting laser beam, to adjust laser beam on the workspace of workbench
Tube surfaces focus size, so as to control the machining accuracy of intravascular stent.In laser beam process, laser cutting
Mouth has gas ejection.Condenser lens and laser cutting nozzle can precise motions on a vertical axis.
Workbench is horizontal rotation type workbench, is also vertical rotation working platform, is also lifting type workbench.
CCD camera can detect processing dimension.Control unit is used for processing information, controls the size of laser beam, and then control
The machining accuracy of intravascular stent processed.
The utility model precision is high, and stability is good.It is adapted to processing metallic blood vessel bracket and nonmetallic intravascular stent.Focus point
Diameter formula is as follows：
Wherein, 2W0It is to focus on spot diameter, λ is optical maser wavelength, and F is condenser lens focal length, and D is launching spot diameter.
When using the beam expander of pancratic magnification, launching spot diameter D will change.If for example, launching spot diameter D
2 times are increased to, spot diameter is focused on and is reduced by 2 times, laser power density increases to 4 times.Process if any machining deviation,
It can be adjusted by adjusting the beam expander of pancratic magnification, stability is good.If directly adjustment laser power can influence laser
Stability.
In a control unit, processing dimension is set.The processing dimension of CCD detection reality.If actual processing size is big,
The beam expander that control unit sends commands to pancratic magnification expands launching spot diameter D, to reduce focal beam spot, reduces processing
Size.If actual size is small, the beam expander that control unit sends commands to pancratic magnification reduces launching spot diameter D,
To expand focal beam spot, expand processing dimension.
Preferably, the speculum is 45 ° of speculums.
Preferably, the workbench is horizontal rotation type workbench.
Preferably, the workbench is vertical rotation working platform.
Preferably, the workbench is lifting type workbench.
The utility model can reach following effect：
The utility model is due to the control system using the beam expander with pancratic magnification, real-time optimization Laser Processing ginseng
Number, the wide coherence request of muscle of intravascular stent can obtain the control of precision.The pulse duration of ultrafast laser is received than conventional
The pulse duration of laser second is 100,000 times short.Using these ultrashort pulses, laser energy enter tubing and expansion etc. from
Left before daughter, then it can be transmitted as heat in tubing.As a result it is commonly known as " cold " or " no heat " laser ablation.
Its significant feature is the very clean micron order machined features that it is produced, usually not burr, no fusing, no weight
Cast and without heat affected area.So as to reduce the post processing after tubing laser cutting, reach optimal cutting effect, improve blood vessel branch
The performance of frame, good reliability.
Brief description of the drawings
Fig. 1 is a kind of attachment structure schematic diagram of the utility model.
Embodiment
The utility model is further described with embodiment below in conjunction with the accompanying drawings.
Embodiment, a kind of laser processing unit (plant) of adjustable light beam is shown in Figure 1, including ultrafast laser 1, ultrafast
Laser isolator 2, the laser beam expander 3 of pancratic magnification, speculum 4, condenser lens 5, protective glass 6, laser cutting nozzle 7,
Workbench 9, optical filter 10, CCD camera 11 and control unit 12, the laser that the ultrafast laser 1 exports is successively through ultrafast
Laser isolator 2, the laser beam expander 3 of pancratic magnification, speculum 4, condenser lens 5, protective glass 6 and laser cutting nozzle 7
It is radiated at afterwards on the workspace 8 of workbench, the control terminal of the CCD camera and laser beam expander connects with control unit respectively
Connect, the camera lens of the CCD camera is arranged towards the workspace of workbench, and the optical filter is arranged in speculum and is imaged with CCD
Between head.
The speculum is 45 ° of speculums.The workbench is horizontal rotation type workbench, and the workbench is also perpendicular
Straight rotation working platform, the workbench are also lifting type workbench.
Ultrafast laser is femto-second laser or is picosecond laser.Ultrafast laser isolator ensures the stabilization work of laser
Make.The beam expander of pancratic magnification is used for the size for adjusting laser beam, to adjust laser beam on the workspace of workbench
Tube surfaces focus size, so as to control the machining accuracy of intravascular stent.In laser beam process, laser cutting
Mouth has gas ejection.Condenser lens and laser cutting nozzle can precise motions on a vertical axis.
Workbench is horizontal rotation type workbench, is also vertical rotation working platform, is also lifting type workbench.
CCD camera can detect processing dimension.Control unit is used for processing information, controls the size of laser beam, and then control
The machining accuracy of intravascular stent processed.
The utility model precision is high, and stability is good.It is adapted to processing metallic blood vessel bracket and nonmetallic intravascular stent.Focus point
Diameter formula is as follows：
Wherein, 2W0It is to focus on spot diameter, λ is optical maser wavelength, and F is condenser lens focal length, and D is launching spot diameter.
When using the beam expander of pancratic magnification, launching spot diameter D will change.If for example, launching spot diameter D
2 times are increased to, spot diameter is focused on and is reduced by 2 times, laser power density increases to 4 times.Process if any machining deviation,
It can be adjusted by adjusting the beam expander of pancratic magnification, stability is good.If directly adjustment laser power can influence laser
Stability.
In a control unit, processing dimension is set.The processing dimension of CCD detection reality.If actual processing size is big,
The beam expander that control unit sends commands to pancratic magnification expands launching spot diameter D, to reduce focal beam spot, reduces processing
Size.If actual size is small, the beam expander that control unit sends commands to pancratic magnification reduces launching spot diameter D,
To expand focal beam spot, expand processing dimension.
The tubing of processing intravascular stent is placed on the workspace 8 of workbench can be to the blood vessel by tubular object extruding into needs
Stent.
The embodiments of the present invention have been described above with reference to the accompanying drawings, and however, the implementation is not limited to the above embodiments, this
Field those of ordinary skill can be with various changes and modifications may be made within the scope of the appended claims.
Claims (5)
1. the laser processing unit (plant) of a kind of adjustable light beam, it is characterised in that isolate including ultrafast laser (1), ultrafast laser
Device (2), the laser beam expander (3) of pancratic magnification, speculum (4), condenser lens (5), protective glass (6), laser cutting nozzle
(7), workbench (9), optical filter (10), CCD camera (11) and control unit (12), ultrafast laser (1) output
Laser successively through ultrafast laser isolator (2), the laser beam expander (3) of pancratic magnification, speculum (4), condenser lens (5),
It is radiated at after protective glass (6) and laser cutting nozzle (7) on the workspace of workbench, the CCD camera and laser beam expander
Control terminal be connected respectively with control unit, the camera lens of the CCD camera is arranged towards the workspace of workbench, the optical filtering
Piece is arranged between speculum and CCD camera.
2. the laser processing unit (plant) of a kind of adjustable light beam according to claim 1, it is characterised in that the speculum is
45 ° of speculums.
3. the laser processing unit (plant) of a kind of adjustable light beam according to claim 1, it is characterised in that the workbench is
Horizontal rotation type workbench.
4. the laser processing unit (plant) of a kind of adjustable light beam according to claim 1, it is characterised in that the workbench is
Vertical rotation working platform.
5. the laser processing unit (plant) of a kind of adjustable light beam according to claim 1, it is characterised in that the workbench is
Lifting type workbench.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720694512.1U CN207289196U (en) | 2017-06-14 | 2017-06-14 | A kind of laser processing unit (plant) of adjustable light beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720694512.1U CN207289196U (en) | 2017-06-14 | 2017-06-14 | A kind of laser processing unit (plant) of adjustable light beam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207289196U true CN207289196U (en) | 2018-05-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720694512.1U Expired - Fee Related CN207289196U (en) | 2017-06-14 | 2017-06-14 | A kind of laser processing unit (plant) of adjustable light beam |
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| Country | Link |
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| CN (1) | CN207289196U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108080800A (en) * | 2017-06-14 | 2018-05-29 | 谢文杰 | Adjustable light beam femto-second laser processing unit (plant) |
| CN114453732A (en) * | 2021-12-27 | 2022-05-10 | 无锡超通智能制造技术研究院有限公司 | Device and method for continuously processing cardiovascular stent based on femtosecond laser |
-
2017
- 2017-06-14 CN CN201720694512.1U patent/CN207289196U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108080800A (en) * | 2017-06-14 | 2018-05-29 | 谢文杰 | Adjustable light beam femto-second laser processing unit (plant) |
| CN114453732A (en) * | 2021-12-27 | 2022-05-10 | 无锡超通智能制造技术研究院有限公司 | Device and method for continuously processing cardiovascular stent based on femtosecond laser |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180501 |