CN206981996U - One kind is based on low frequency copped wave speculum pulse composite welding optical system - Google Patents
One kind is based on low frequency copped wave speculum pulse composite welding optical system Download PDFInfo
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- CN206981996U CN206981996U CN201720963779.6U CN201720963779U CN206981996U CN 206981996 U CN206981996 U CN 206981996U CN 201720963779 U CN201720963779 U CN 201720963779U CN 206981996 U CN206981996 U CN 206981996U
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- anaberration
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- 230000003287 optical effect Effects 0.000 title claims abstract description 68
- 238000003466 welding Methods 0.000 title claims abstract description 50
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- 238000000926 separation method Methods 0.000 claims description 6
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- 229910001095 light aluminium alloy Inorganic materials 0.000 claims description 3
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Abstract
The utility model discloses one kind to be based on low frequency copped wave speculum pulse composite welding optical system, including anaberration collimation microscope group, low frequency copped wave speculum, the first speculum, the second speculum, the 3rd speculum, the 4th speculum, the first anaberration focus on microscope group and the second anaberration focuses on microscope group;Wherein, anaberration collimation microscope group, the first anaberration focus on microscope group and the second anaberration focuses on microscope group and can be replaced anaberration aspherical mirror.Low frequency copped wave speculum pulse composite welding optical system provided by the utility model, realize two hot spot spacing in bead direction are adjustable, secondary light path face of weld spot size adjustable function, swash device laser welding suitable for high power jointed fiber, especially such as the non-penetration laser welding application of the contour anti-material of aluminium alloy, it can be effectively improved or even eliminate laser welding defect such as crackle, stomata etc., while effectively improve fusion penetration and surface quality.
Description
Technical field
High-capacity optical fiber laser laser welding technology field is the utility model is related to, is specially that one kind is based on low frequency copped wave
Speculum pulse composite welding optical system.
Background technology
Laser processing technology covers a variety of laser processing technologies such as laser cutting, welding, quenching, punching, micro Process, profit
With the fundamental characteristics of high-order harmonics spectrum.Because laser beam has untouchable, the process velocity with rapidoprint
Soon with the advantage such as good quality, it is a kind of new and high technology that can not be substituted to have established laser processing technology.
Present laser cutting occupies the main status of whole Laser Processing industry, wherein cut with optical fiber output class laser again
It is segmented into primary.Optical fiber output class laser covers optical fiber laser and semiconductor optical fibre coupled laser, due to optical fiber
Pliability and the performance for having coupling output well to near-infrared light beam so that the occupation rate of market of optical fiber output class laser
Become increasingly conspicuous.Multikilowatt optical fiber output class laser is quite popularized at present, and myriawatt level laser also progressively shows market, such as
The early 100kW lasers that have been up to of IPG come out.
With the popularization of optical-fiber laser high power, the laser processing application beyond being cut by laser also progressively is expanded,
From scientific research change to industrialization, laser welding, quenching, cladding etc. have the research of higher degree, even emerging 3D printing skill
Art, and study like a raging fire.
Laser welding, compared with traditional TIG arc weldings, MIG arc weldings etc., with energy density is high, speed is fast, welding
Deform the advantages that small, molten wide and heat affected area are narrow.But for the laser welding of high anti-material, common welding manner deficiency
To meet welding demand, such as the laser welding of aluminium alloy, easily crack, the laser welding defect such as stomata.
At present, the mode for solving high anti-material laser weld defect is contributed to have a variety of.In Laser Welding of Aluminum Alloys, than
Such as the welding of more spot lasers, more conventional is double spot lasers welderings, when double luminous point vertical weld directions are with falling within weld seam both sides,
Larger molten bath and keyhole can be formed, adds keyhole stability, is advantageous to air entrapment floating, improves weldering to a certain extent
Internal stomata is stitched, but for this is generally be directed to gross blow hole, spilehole is difficult then elimination;Such as oscillatory scanning welding, i.e., it is logical
Special optical system such as vibration mirror scanning, rotary wedge scarnning mirror etc. are crossed, scan frequency is in the certain limit of 100Hz magnitudes, all
Contribute to the generation of suppression weld seam internal porosity, there are some researches show, reduce the reduction that welding seam deep width ratio is advantageous to weld porosity, this
For deep penetration welding and one kind limits;Such as pulse laser spot welding again, by taking CO2 lasers as an example, works as pulse laser frequency
In the range of 50Hz~200Hz, it can effectively suppress or even eliminate weld porosity, but aluminium alloy is to CO2 laser reflectivities ratio
The also height of optical fiber laser, and low-frequency pulse optical fiber laser mean power is difficult to do up, even if having, price is also sufficiently expensive,
And due to the high anti-espionage of material, capacity usage ratio is low, it is difficult to accomplish deep penetration welding;For another example laser-arc hybrid welding process, larger journey
It can improve or even eliminate the weld defect of high anti-material on degree, while also improve fusion penetration, improvement surface quality, but arc welding sheet
The introducing of body, heat affected area can be caused significantly to expand, the even electric arc combined weldering of laser pulse, it is also difficult to substitute single laser
Weld molten wide and this narrow and small essence of heat affected area.
Based on the premises, the utility model proposes one kind to be based on low frequency copped wave speculum pulse composite welding optical system
System, by low frequency copped wave speculum high speed spinfunction, can be divided into 1 by continuous laser beam:The pulsed light beam of 1 dutycycle, pulse
Light beam is fixed by main optical path and secondary light path, main optical path respectively in time domain, and secondary optical line terminal plane mirror and second disappears picture
It is adjustable compared to main optical path angular separation that difference focuses on the optical path direction that microscope group is formed, and second group of anaberration focus on microscope group can be along right
Answer optical axis to move, realize two hot spot spacing in bead direction are adjustable, secondary light path face of weld spot size adjustable function,
Swash device laser welding suitable for high power jointed fiber, especially the non-penetration laser welding such as the contour anti-material of aluminium alloy should
With can be effectively improved or even eliminate laser welding defect such as crackle, stomata etc., while effectively improve fusion penetration and surface quality.
Utility model content
The purpose of this utility model is that providing one kind is based on low frequency copped wave speculum pulse composite welding optical system, with
Solve the problems, such as to propose in above-mentioned background technology.
To achieve the above object, the utility model provides following technical scheme:One kind is based on low frequency copped wave speculum pulse
Composite welding optical system, including anaberration collimation microscope group, low frequency copped wave speculum, the first speculum, the second speculum, the 3rd
Speculum, the 4th speculum, the first anaberration focus on microscope group and the second anaberration focuses on microscope group;The anaberration collimation microscope group,
First speculum, the second speculum, the 3rd speculum, the 4th speculum, the first anaberration focus on microscope group and the second anaberration gathers
Burnt microscope group is cylindric, quartz material;The low frequency copped wave speculum is the how fan-shaped column of isogonism, light aluminum alloy material;
The low frequency copped wave speculum, the first speculum, the second speculum, the 3rd speculum, the 4th speculum are 45 ° of angles of reflection,
Mirror surface is plane;The low frequency copped wave speculum is 1:The frequency multiplication speculum of 1 dutycycle 3, has 3 on minute surface direction
The individual plane of symmetry, the central symmetry axis that each plane of symmetry is formed is low frequency copped wave reflection mirror rotation shafts;4th speculum disappears with second
It is the beam center axle for inciding the 4th speculum that aberration, which focuses on microscope group common shaft, and the 4th speculum mirror surface is passed through in rotating shaft
Center;The low frequency copped wave speculum mirror surface, the first mirror mirror are parallel, and focus on microscope group with the first anaberration and form
Main optical path, low frequency copped wave speculum light-leaking area, the second speculum, the 3rd speculum, the 4th speculum and the second anaberration
Focus on microscope group and form secondary light path;The low frequency copped wave speculum the reflected beams, the second speculum the reflected beams direction are mutually perpendicular to;
The anaberration of main optical path first focuses on microscope group and the second anaberration focusing microscope group central shaft is coplanar.
Preferably, the 4th speculum of the secondary optical line terminal focuses on the optical path direction phase of microscope group composition with the second anaberration
It is adjustable compared with main optical path angular separation, and second anaberration focuses on microscope group and moved along corresponding optical axis, falls in face of weld master
Light path hot spot is with secondary light path spot center line in bead direction, and two spot centers are apart from adjustable and front and rear commutative, secondary light
Road is adjustable in the spot size of face of weld;The low frequency copped wave speculum rotating speed is adjustable, corresponding main optical path, secondary light path pulse frequency
Rate is adjustable.
Preferably, the anaberration collimation microscope group, the first anaberration focus on microscope group and the second anaberration focusing microscope group can
Replace with anaberration aspherical mirror.
Compared with prior art, the beneficial effects of the utility model are:
1st, it is provided by the utility model to be based on low frequency copped wave speculum pulse composite welding optical system, pass through low frequency copped wave
Speculum high speed spinfunction, continuous laser beam can be divided into 1:The pulsed light beam of 1 dutycycle, pulsed light beam are distinguished in time domain
By main optical path and secondary light path, main optical path is fixed, and the secondary speculum of light path the 4th and the second anaberration focus on the light path that microscope group is formed
Direction is adjustable compared to main optical path angular separation, and the second anaberration focuses on microscope group and can moved along corresponding optical axis, realizes weld seam
Two hot spot spacing are adjustable on direction, secondary light path face of weld spot size adjustable function, suitable for high power jointed fiber
Swash device laser welding, the especially non-penetration laser welding application such as the contour anti-material of aluminium alloy, can be effectively improved or even eliminate
Laser welding defect such as crackle, stomata etc., while effectively improve fusion penetration and surface quality.
2nd, jointed fiber laser device laser beam provided by the utility model is after anaberration collimation microscope group collimation, by low frequency
Copped wave speculum carries out time domain light splitting, so as to obtain main optical path and the two-way pulsed light beam in secondary light path.Main optical path is fixed, vertically
Or near normal weldment surface, focus on light beam fall in welded joints;Secondary light path is oblique to be mapped to weldment surface, and focus on light beam falls
On weld seam, the 4th speculum and the second anaberration focus on microscope group and can rotated together about the 4th mirror light beam center axle is incided,
Two hot spot spacing and context on weldment surface weld direction can be changed;Meanwhile low frequency copped wave speculum rotary frequency
Rate is adjustable, it is ensured that main optical path, secondary light path pulse frequency is adjustable, and the second anaberration focuses on microscope group position along corresponding incident light axis
It is adjustable, it can be ensured that spot size of the secondary light path on face of weld is adjustable.
3rd, the 4th speculum provided by the utility model around corresponding incident light axis rotate when, reflectivity will not be changed;It is low
When frequency copped wave speculum rotates around the shaft, the change of the reflected beams angle will not be caused, largely ensure that beam and focus
The hot spot of characteristic main optical path such as in time domain, secondary light path focus on light beam on corresponding optical axis is substantially circular, and does not influence
Reflectivity;First anaberration focuses on microscope group and the second anaberration focusing microscope group central shaft is coplanar, it is ensured that the 4th speculum and second
Anaberration focuses on microscope group in integral-rotation swing process, and the hot spot that secondary light path falls in welded joints does not deviate.
4th, light path system pulse frequency provided by the utility model, in special pulses range, help to reduce
The laser welding defect of high anti-material is even eliminated, while reduces heat affected area, reduces weld seam deformation;Main optical path falls with secondary light path
Two hot spot spacing on weldment weld seam are adjustable, and fore-and-aft direction is interchangeable, and secondary light path falls the spot size on face of weld
It is adjustable, secondary light path hot spot pretreatment, main optical path hot spot post-processing mode are applicable not only to, is also applied for the overlapping weldering mode of double hot spots
And main optical path hot spot is first processed, secondary light path hot spot post processing mode, except helping to reduce or even eliminate laser welding defect,
Also contribute to improve capacity usage ratio, such as secondary light path hot spot is advantageous to main optical path light beam to the advanced row pre-add thermal softening of weld seam
Energy absorption efficiency.In addition, also contributing to welding penetration and depth-to-width ratio, improve face of weld quality, and eliminate in theory
Non-essential energy loss.
Brief description of the drawings
Fig. 1 is low frequency copped wave speculum pulse composite welding optical system structure schematic diagram described in the utility model;
Fig. 2 is optics system structure diagram when low frequency copped wave speculum described in the utility model is totally reflected;
Optics system structure diagram when Fig. 3 is low frequency copped wave speculum described in the utility model full light leak;
Fig. 4 is low frequency copped wave mirror structure schematic diagram of the present utility model.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belong to the scope of the utility model protection.
Fig. 1-4 are referred to, the utility model provides a kind of technical scheme:One kind is compound based on low frequency copped wave speculum pulse
Weld optical system, including anaberration collimation microscope group 2, low frequency copped wave speculum 3, the first speculum 5, the second speculum the 8, the 3rd
Speculum 9, the 4th speculum 10, the first anaberration focus on the anaberration of microscope group 6 and second and focus on microscope group 11;The anaberration collimation
Microscope group 2, the first speculum 5, the second speculum 8, the 3rd speculum 9, the 4th speculum 10, the first anaberration focus on microscope group 6 and
It is cylindric, quartz material that second anaberration, which focuses on microscope group 11,;The low frequency copped wave speculum 3 is the how fan-shaped column of isogonism,
Light aluminum alloy material;The low frequency copped wave speculum 3, the first speculum 5, the second speculum 8, the 3rd speculum the 9, the 4th are anti-
It is 45 ° of angles of reflection to penetrate mirror 10, and mirror surface is plane;The low frequency copped wave speculum 3 is 1:The frequency multiplication of 1 dutycycle 3 reflects
Mirror, there are 3 planes of symmetry on minute surface direction, the central symmetry axis that each plane of symmetry is formed is low frequency copped wave reflection mirror rotation shafts 4;
It is the beam center for inciding the 4th speculum 10 that 4th speculum 10 and the second anaberration, which focus on the common shaft of microscope group 11,
The mirror surface center of the 4th speculum 10 is passed through in axle, rotating shaft;The mirror surface of low frequency copped wave speculum 3, the mirror of the first speculum 5
Face is parallel, and with the first anaberration focus on microscope group 6 form main optical path, the light-leaking area of low frequency copped wave speculum 3, the second speculum 8,
3rd speculum 9, the 4th speculum 10 and the second anaberration focus on microscope group 11 and form secondary light path;The low frequency copped wave speculum
3 the reflected beams, the reflected beams direction of the second speculum 8 are mutually perpendicular to;The anaberration of main optical path first focuses on microscope group 6 and second
It is coplanar that anaberration focuses on the central shaft of microscope group 11;Anaberration collimation microscope group 2, the first anaberration focus on the anaberration of microscope group 6 and second
Focus on microscope group 11 and can be replaced anaberration aspherical mirror.
In the utility model, the 4th speculum 10 of secondary optical line terminal and the second anaberration focus on the light path that microscope group 11 is formed
Direction is adjustable compared to main optical path angular separation, and second anaberration focuses on microscope group 11 and moved along corresponding optical axis, falls and is welding
Seam surface main optical path hot spot and secondary light path spot center line are in bead direction, and two spot centers are apart from adjustable and front and rear hand over
Change, secondary light path is adjustable in the spot size of face of weld;3 rotating speeds of the low frequency copped wave speculum are adjustable, corresponding main optical path, secondary light
Road pulse frequency is adjustable.
Operation principle:In the case where high-capacity optical fiber laser goes out the incidence of luminous point 1, divergent beams are by anaberration collimation microscope group 2
Collimation, collimated light beam incides the surface of low frequency copped wave speculum 3, while low frequency copped wave speculum 3 is rotated by rotating shaft 4,
Low frequency copped wave mirror surface occurs 1:The complete light leak of light beam, part light leak and part under 1 dutycycle is reflective, completely reflective
Alternately procedure of rule, Fig. 1 show part light leak and the reflective phenomenon in part, and Fig. 2 show complete reflective phenomenon, Fig. 3 institutes
It is shown as 3 complete light leakage phenomenas.When low frequency copped wave speculum 3 is realizing complete light leak in time domain, main optical path is unglazed, by the picture that disappears
The light beam that difference collimation microscope group 2 collimates is incided on the second speculum 8 from after the light leak of low frequency copped wave speculum 3, one by one via second
After speculum 8, the 3rd speculum 9 and the reflection of the 4th speculum 10, microscope group 11 is focused on by the second anaberration and focused on, forms first
Focus point 7, it is oblique to be mapped to face of weld;It is secondary when low frequency copped wave speculum 3 is realizing that part light leak is reflective with part in time domain
Described when complete light leak is deferred in light path, be then the collimated light beam reflected via low frequency copped wave speculum 3 on main optical path, then by the
One speculum 5 reflects, and the reflected beams focus on microscope group 6 by the first anaberration and focused on, and form the second focus point 12, focus on light beam is vertical
Or near normal falls on the weld seam on weldment surface;When low frequency copped wave speculum 3 is realizing completely reflective in time domain, secondary light
Road is unglazed, transport behavior of the light beam transport behavior with reference to part light leak and the reflective lower main optical path in part on main optical path.Cut in low frequency
For the continuously and smoothly of wave reflection mirror 3 around the shaft under 4 rotations, there is above-mentioned alternately change procedure in whole beam Propagation behavior, realizes master
The impulse transfer of light path and secondary light path.Simultaneously as the 4th speculum 10 and the second anaberration focus on that microscope group 11 is overall can be around the
The incident beam optical axis of four speculum 10 rotates, it is ensured that main optical path is with secondary light path hot spot spacing and towards controllable on weld seam, in addition
It can also be that the second anaberration focuses on the incident light of microscope group 11 along the reflected beams of the 4th speculum 10 that second anaberration, which focuses on microscope group 11,
Beam optical axis direction does position adjustment, ensure that the regulation of secondary light path spot size on face of weld, realizes double light path pulsed reset
Close welding optical system.
Such as Fig. 4 of low frequency copped wave speculum 3, tri- parts of A, B, C are reflector space, are 60 ° of fan sections, each light leak area
Domain is also 60 ° of regions, and D areas do not allow thang-kng, it is ensured that each pulse 1:1 dutycycle.
The utility model novel in structural design, can be by continuous laser beam by low frequency copped wave speculum high speed spinfunction
It is divided into 1:The pulsed light beam of 1 dutycycle, pulsed light beam are fixed by main optical path and secondary light path, main optical path respectively in time domain, secondary
The optical path direction that the speculum of light path the 4th focuses on microscope group composition with the second anaberration is adjustable compared to main optical path angular separation, and the
Two anaberrations focus on microscope group and can moved along corresponding optical axis, realize that two hot spot spacing in bead direction are adjustable, secondary light path is in weld seam
The spot size adjustable function on surface, device laser welding is swashed suitable for high power jointed fiber, especially as aluminium alloy is contour anti-
The non-penetration laser welding application of material, it can be effectively improved or even eliminate laser welding defect such as crackle, stomata etc., while effectively
Improve fusion penetration and surface quality.
While there has been shown and described that embodiment of the present utility model, for the ordinary skill in the art,
It is appreciated that these embodiments can be carried out with a variety of changes in the case where not departing from principle of the present utility model and spirit, repaiied
Change, replace and modification, the scope of the utility model are defined by the appended claims and the equivalents thereof.
Claims (3)
1. one kind is based on low frequency copped wave speculum pulse composite welding optical system, it is characterised in that:Including anaberration collimating mirror
Group (2), low frequency copped wave speculum (3), the first speculum (5), the second speculum (8), the 3rd speculum (9), the 4th speculum
(10), the first anaberration focuses on microscope group (6) and the second anaberration focuses on microscope group (11);The anaberration collimation microscope group (2), first
Speculum (5), the second speculum (8), the 3rd speculum (9), the 4th speculum (10), the first anaberration focus on microscope group (6) and
It is cylindric, quartz material that second anaberration, which focuses on microscope group (11),;The low frequency copped wave speculum (3) is the how fan-shaped post of isogonism
Shape, light aluminum alloy material;The low frequency copped wave speculum (3), the first speculum (5), the second speculum (8), the 3rd reflection
Mirror (9), the 4th speculum (10) are 45 ° of angles of reflection, and mirror surface is plane;The low frequency copped wave speculum (3) is 1:1
The frequency multiplication speculum of dutycycle 3, there are 3 planes of symmetry on minute surface direction, the central symmetry axis that each plane of symmetry is formed is low frequency
Copped wave reflection mirror rotation shafts (4);4th speculum (10) focuses on microscope group (11) common shaft to incide with the second anaberration
The 4th speculum (10) mirror surface center is passed through in the beam center axle of 4th speculum (10), rotating shaft;The low frequency copped wave is anti-
It is parallel to penetrate mirror (3) mirror surface, the first speculum (5) minute surface, and focuses on microscope group (6) with the first anaberration and forms main optical path, it is low
Frequency copped wave speculum (3) light-leaking area, the second speculum (8), the 3rd speculum (9), the 4th speculum (10) and second disappear
Aberration focuses on microscope group (11) and forms secondary light path;Low frequency copped wave speculum (3) the reflected beams, the second speculum (8) reflected light
Shu Fangxiang is mutually perpendicular to;The anaberration of main optical path first focuses on microscope group (6) and focuses on microscope group (11) central shaft with the second anaberration
It is coplanar.
2. one kind according to claim 1 is based on low frequency copped wave speculum pulse composite welding optical system, its feature exists
In:4th speculum (10) of the secondary optical line terminal and the second anaberration focus on optical path direction that microscope group (11) forms compared to
Main optical path angular separation is adjustable, and second anaberration focuses on microscope group (11) and moved along corresponding optical axis, falls in face of weld master
Light path hot spot is with secondary light path spot center line in bead direction, and two spot centers are apart from adjustable and front and rear commutative, secondary light
Road is adjustable in the spot size of face of weld;Low frequency copped wave speculum (3) rotating speed is adjustable, corresponding main optical path, secondary light path arteries and veins
Rush frequency-adjustable.
3. one kind according to claim 1 is based on low frequency copped wave speculum pulse composite welding optical system, its feature exists
In:The anaberration collimation microscope group (2), the first anaberration focus on microscope group (6) and the second anaberration focuses on microscope group (11) and can replaced
It is changed to anaberration aspherical mirror.
Priority Applications (1)
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CN201720963779.6U CN206981996U (en) | 2017-08-03 | 2017-08-03 | One kind is based on low frequency copped wave speculum pulse composite welding optical system |
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CN201720963779.6U CN206981996U (en) | 2017-08-03 | 2017-08-03 | One kind is based on low frequency copped wave speculum pulse composite welding optical system |
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Publication Number | Publication Date |
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CN206981996U true CN206981996U (en) | 2018-02-09 |
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