CN108356418B - Laser surface treatment device and method - Google Patents
Laser surface treatment device and method Download PDFInfo
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- CN108356418B CN108356418B CN201810105375.2A CN201810105375A CN108356418B CN 108356418 B CN108356418 B CN 108356418B CN 201810105375 A CN201810105375 A CN 201810105375A CN 108356418 B CN108356418 B CN 108356418B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/352—Working by laser beam, e.g. welding, cutting or boring for surface treatment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
- B23K26/04—Automatically aligning, aiming or focusing the laser beam, e.g. using the back-scattered light
- B23K26/046—Automatically focusing the laser beam
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
- B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
- B23K26/064—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
- B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
- B23K26/067—Dividing the beam into multiple beams, e.g. multifocusing
Abstract
The invention discloses a laser surface treatment device and a method, relating to the technical field of laser surface treatment, wherein the device comprises: a laser generator that emits an incident laser beam; a focusing assembly for receiving and focusing the incident laser beam, wherein the focusing assembly is arranged on the light path of the incident laser beam; a beam splitting assembly that receives the focused incident laser beam, wherein the beam splitting assembly comprises: a first beam splitter prism equally dividing the incident laser beam into a first laser beam and a second laser beam; the first reflector, the second reflector, the third reflector and the fourth reflector; a second beam splitter prism and a third beam splitter prism; a fifth reflector, a sixth reflector, a seventh reflector, and an eighth reflector; a central through hole. The laser focusing device achieves the technical effects of realizing the laser focusing covering 360 degrees of circumference, realizing the laser surface treatment of the cylindrical workpiece without a rotating mechanism and improving the automation degree and the processing efficiency.
Description
Technical Field
The invention belongs to the technical field of laser surface treatment, and particularly relates to a laser surface treatment device and method.
Background
The laser surface treatment is a technological method for realizing surface modification of a material by heating the surface of the material in a non-contact manner under the numerical control of a laser processing system by adopting a focused high-energy laser beam and enabling the laser to act on the surface of the material.
However, in the process of implementing the technical solution in the embodiment of the present application, the inventor of the present application finds that the above prior art has at least the following technical problems:
in the prior art, when the laser surface treatment is carried out on a workpiece with a cylindrical structure, the workpiece needs to be rotated or a plurality of laser devices need to carry out laser work from different directions, the device is complex, the operation is complex, and the machining efficiency is low.
Disclosure of Invention
The embodiment of the application provides a laser surface treatment device and a laser surface treatment method, solves the technical problems that in the prior art, when cylindrical workpieces are subjected to laser surface treatment, rotary motion or multiple laser devices are required to treat the cylindrical workpieces from different directions, the device is complex and complex to operate, and the machining efficiency is low, achieves the technical effects of facilitating the realization of the laser surface treatment of the cylindrical workpieces, and is simple and capable of improving the automation degree and the machining efficiency.
The embodiment of the invention provides a laser surface treatment device, which comprises: a laser generator that emits an incident laser beam; a focusing assembly for receiving and focusing the incident laser beam, wherein the focusing assembly is arranged on the light path of the incident laser beam; a light splitting assembly that receives the focused incident laser beam, the light splitting assembly being disposed on a light path of the focused incident laser beam, wherein the light splitting assembly includes: a first beam splitter prism equally dividing the incident laser beam into a first laser beam and a second laser beam; the laser device comprises a first reflector, a second reflector, a third reflector and a fourth reflector, wherein the first reflector and the third reflector are arranged on a light path of a first laser beam, and the second reflector and the fourth reflector are arranged on a light path of a second laser beam, wherein the first laser beam is sequentially bent through the first reflector and the third reflector, and the second laser beam is sequentially bent through the second reflector and the fourth reflector; the laser system comprises a first laser beam, a second laser beam, a third laser beam and a third optical splitter prism, wherein the first laser beam is bent to be a first laser beam, the second laser beam is bent to be a second laser beam, the third laser beam is bent to be a third laser beam, the third optical splitter prism is arranged on the optical path of the second laser beam, and the third optical splitter prism is arranged on the optical path of the first laser beam; the laser beam splitter comprises a fifth reflector, a sixth reflector, a seventh reflector and an eighth reflector, wherein the fifth reflector, the sixth reflector, the seventh reflector and the eighth reflector are respectively arranged on light paths of the third laser beam, the fourth laser beam, the fifth laser beam and the sixth laser beam, and the fifth reflector, the sixth reflector, the seventh reflector and the eighth reflector respectively reflect the third laser beam, the fourth laser beam, the fifth laser beam and the sixth laser beam; the central through hole is arranged at the intersection of the light paths of the third laser beam, the fourth laser beam, the fifth laser beam and the sixth laser beam, and is provided with at least four laser outlets, and the third laser beam, the fourth laser beam, the fifth laser beam and the sixth laser beam emit light through the four laser outlets and act on a target workpiece.
Preferably, the apparatus further comprises: an optical isolator disposed inside the laser generator; or, the first light absorber is arranged on the light path of the reflected sixth laser beam, the second light absorber is arranged on the light path of the reflected fourth laser beam, and light absorbing coatings are arranged at the bottoms of the second light splitting prism and the third light splitting prism.
Preferably, the focusing assembly includes: the scanning galvanometer is arranged on the light path of the incident laser beam and forms an included angle with the incident light axis of the incident laser beam; the focusing lens assembly is arranged on a light path of the scanned incident laser beam and comprises a focusing lens assembly and a window, wherein the focusing lens assembly focuses the incident laser beam and emits light through the window; the focusing assembly is matched with the focusing lens assembly, and the focusing lens assembly realizes focusing through the focusing assembly.
Preferably, the apparatus further comprises: the window is arranged perpendicular to the incident optical axis of the focused incident laser beam; or the normal of the window is obliquely arranged relative to the incident optical axis of the incident laser beam after focusing, and the inclination angle is 5-15 degrees.
Preferably, the apparatus further comprises: and the dust collectors are arranged on two sides of the central through hole.
Preferably, the apparatus further comprises: a drive unit that drives axial movement of the target workpiece; a controller that controls a conveying speed of the target workpiece; and the conveying unit is respectively connected with the driving unit and the controller, and the conveying unit conveys the target workpiece under the control of the controller.
Preferably, the apparatus further comprises: the included angle between the scanning galvanometer and the incident optical axis of the incident laser beam is 30-60 degrees.
Preferably, the apparatus further comprises: the second light splitting prism and the third light splitting prism are different from the first light splitting prism.
On the other hand, the embodiment of the invention also provides a laser surface treatment method, which comprises the following steps: a laser generator emits the incident laser beam; focusing the incident laser beam emitted by the laser generator through a focusing assembly; the focused incident laser beam enters a light splitting assembly and is equally divided into a first laser beam and a second laser beam through a first light splitting prism, the first laser beam is sequentially bent through a first reflecting mirror and a third reflecting mirror, and the second laser beam is sequentially bent through a second reflecting mirror and a fourth reflecting mirror; the first laser beam after being bent is equally divided into a third laser beam and a fourth laser beam through the second beam splitter prism, and the second laser beam after being bent is equally divided into a fifth laser beam and a sixth laser beam through the third beam splitter prism; and enabling the third laser beam, the fourth laser beam, the fifth laser beam and the sixth laser beam to respectively pass through the fifth reflector, the sixth reflector, the seventh reflector and the eighth reflector for reflection, and emitting light through four laser outlets of the central through hole, so as to form a laser focusing surface at the central through hole and irradiate the laser focusing surface on a target workpiece.
Preferably, the method further comprises: the laser focusing surface is a focusing surface covering 360-degree circumference.
One or more technical solutions in the embodiments of the present invention at least have one or more of the following technical effects:
1. in an embodiment of the present invention, a laser surface treatment apparatus includes: a laser generator that emits an incident laser beam; a focusing assembly for receiving and focusing the incident laser beam, wherein the focusing assembly is arranged on the light path of the incident laser beam; a light splitting assembly that receives the focused incident laser beam, the light splitting assembly being disposed on a light path of the focused incident laser beam, wherein the light splitting assembly includes: a first beam splitter prism equally dividing the incident laser beam into a first laser beam and a second laser beam; the laser device comprises a first reflector, a second reflector, a third reflector and a fourth reflector, wherein the first reflector and the third reflector are arranged on a light path of a first laser beam, and the second reflector and the fourth reflector are arranged on a light path of a second laser beam, wherein the first laser beam is sequentially bent through the first reflector and the third reflector, and the second laser beam is sequentially bent through the second reflector and the fourth reflector; the laser system comprises a first laser beam, a second laser beam, a third laser beam and a third optical splitter prism, wherein the first laser beam is bent to be a first laser beam, the second laser beam is bent to be a second laser beam, the third laser beam is bent to be a third laser beam, the third optical splitter prism is arranged on the optical path of the second laser beam, and the third optical splitter prism is arranged on the optical path of the first laser beam; the laser beam splitter comprises a fifth reflector, a sixth reflector, a seventh reflector and an eighth reflector, wherein the fifth reflector, the sixth reflector, the seventh reflector and the eighth reflector are respectively arranged on light paths of the third laser beam, the fourth laser beam, the fifth laser beam and the sixth laser beam, and the fifth reflector, the sixth reflector, the seventh reflector and the eighth reflector respectively reflect the third laser beam, the fourth laser beam, the fifth laser beam and the sixth laser beam; the central through hole is arranged at the intersection of the light paths of the third laser beam, the fourth laser beam, the fifth laser beam and the sixth laser beam, and is provided with at least four laser outlets, and the third laser beam, the fourth laser beam, the fifth laser beam and the sixth laser beam emit light through the four laser outlets and act on a target workpiece. By the device, the technical problems that when the cylindrical workpiece is subjected to laser surface treatment in the prior art, rotary motion or multiple laser devices are required to be treated from different directions, the device is complex, the operation is complex, and the machining efficiency is low are solved, the aim of realizing 360-degree-coverage circumference laser focusing is achieved, the laser surface treatment of the cylindrical workpiece can be realized without a rotary mechanism, the device is simple, and the technical effects of improving the automation degree and the machining efficiency are achieved.
2. The embodiment of the application provides a light isolator, which is arranged inside the laser generator. The technical effect of avoiding damage to internal elements of the laser generator caused by echo laser is achieved.
3. This application embodiment is through first light absorber, second light absorber, first light absorber sets up after the reflection the light path of sixth laser beam, second light absorber sets up after the reflection the light path of fourth laser beam, just second beam splitting prism, third beam splitting prism bottom are provided with the light absorption coating. The technical effects of realizing residual laser absorption and avoiding damage to internal elements of the laser generator caused by echo laser are achieved.
4. The embodiment of the application provides a focusing assembly, wherein the focusing assembly is matched with the focusing lens assembly, and the focusing lens assembly realizes focusing through the focusing assembly. The technical effects that the condition that the emergent laser forms focus on the surfaces of cylindrical workpieces with different diameters is met through focusing, and the focusing position can be changed to adjust the energy density required in laser operation are achieved.
5. The normal of the window is obliquely arranged relative to the incident optical axis of the incident laser beam after being focused, and the inclination angle is 5-15 degrees. The technical effect of avoiding the damage of the echo laser to the internal elements of the laser generator is further achieved.
6. This application embodiment passes through the dust remover, the dust remover sets up the both sides of central through-hole. The technical effects of absorbing tiny particles and dust generated on the surface of a workpiece in laser operation and prolonging the service life of the device are achieved.
7. The embodiment of the invention provides a laser surface treatment method, which comprises the following steps: a laser generator emits the incident laser beam; focusing the incident laser beam emitted by the laser generator through a focusing assembly; the focused incident laser beam enters a light splitting assembly and is equally divided into a first laser beam and a second laser beam through a first light splitting prism, the first laser beam is sequentially bent through a first reflecting mirror and a third reflecting mirror, and the second laser beam is sequentially bent through a second reflecting mirror and a fourth reflecting mirror; the first laser beam after being bent is equally divided into a third laser beam and a fourth laser beam through the second beam splitter prism, and the second laser beam after being bent is equally divided into a fifth laser beam and a sixth laser beam through the third beam splitter prism; and enabling the third laser beam, the fourth laser beam, the fifth laser beam and the sixth laser beam to respectively pass through the fifth reflector, the sixth reflector, the seventh reflector and the eighth reflector for reflection, and emitting light through four laser outlets of the central through hole, so as to form a laser focusing surface at the central through hole and irradiate the laser focusing surface on a target workpiece. The technical problems that when the cylindrical workpiece is subjected to laser surface treatment in the prior art, rotary motion or multiple laser devices are required to be treated from different directions, the device is complex, the operation is complex, and the machining efficiency is low are solved, the aim of covering 360-degree circumference laser focusing is achieved, the laser surface treatment of the cylindrical workpiece can be realized without a rotary mechanism, the device is simple, and the technical effects of improving the automation degree and the machining efficiency are achieved.
8. The embodiment of the application passes through the laser focus face is for covering the focus face of 360 circumferences, has further solved among the prior art when carrying out laser surface treatment to the cylinder work piece, needs rotary motion or many laser equipment to carry out the technical problem who handles from the equidirectional, has reached and has realized covering 360 circumference laser focusing, need not rotary mechanism can realize the laser surface treatment of cylinder work piece, realizes automatic operation, improves machining efficiency's technological effect.
The foregoing description is only an overview of the technical solutions of the present invention, and the embodiments of the present invention are described below in order to make the technical means of the present invention more clearly understood and to make the above and other objects, features, and advantages of the present invention more clearly understandable.
Drawings
Fig. 1 is a schematic structural diagram of a laser surface treatment apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a focusing lens assembly of a laser surface treatment apparatus according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of another laser surface treatment apparatus according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a focusing lens assembly of another laser surface treatment apparatus according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of another laser surface treatment apparatus according to an embodiment of the invention.
Description of reference numerals: the laser scanning device comprises a laser generator 1, a focusing assembly 2, a scanning galvanometer 21, a focusing lens assembly 22, a window 220, a focusing lens assembly 222, a focusing assembly 221, a light splitting assembly 3, a first light splitting prism 31, a first reflecting mirror 32, a second reflecting mirror 33, a third reflecting mirror 34, a fourth reflecting mirror 35, a second light splitting prism 36, a third light splitting prism 37, a fifth reflecting mirror 38, a sixth reflecting mirror 39, a seventh reflecting mirror 40, an eighth reflecting mirror 41, a central through hole 42, a target workpiece 43, a first light absorber 44 and a second light absorber 45.
Detailed Description
The embodiment of the application provides a laser surface treatment device and method, and solves the technical problems that in the prior art, when the laser surface treatment is carried out on a cylindrical workpiece, the cylindrical workpiece needs to be treated by rotary motion or multiple laser devices from different directions, the device is complex, the operation is complex, and the machining efficiency is low.
The technical scheme in the embodiment of the invention has the following general idea:
the embodiment of the invention provides a laser surface treatment device and a method, which comprises a laser generator for emitting incident laser beams; a focusing assembly for receiving and focusing the incident laser beam, wherein the focusing assembly is arranged on the light path of the incident laser beam; a light splitting assembly that receives the focused incident laser beam, the light splitting assembly being disposed on a light path of the focused incident laser beam, wherein the light splitting assembly includes: a first beam splitter prism equally dividing the incident laser beam into a first laser beam and a second laser beam; the laser device comprises a first reflector, a second reflector, a third reflector and a fourth reflector, wherein the first reflector and the third reflector are arranged on a light path of a first laser beam, and the second reflector and the fourth reflector are arranged on a light path of a second laser beam, wherein the first laser beam is sequentially bent through the first reflector and the third reflector, and the second laser beam is sequentially bent through the second reflector and the fourth reflector; the laser system comprises a first laser beam, a second laser beam, a third laser beam and a third optical splitter prism, wherein the first laser beam is bent to be a first laser beam, the second laser beam is bent to be a second laser beam, the third laser beam is bent to be a third laser beam, the third optical splitter prism is arranged on the optical path of the second laser beam, and the third optical splitter prism is arranged on the optical path of the first laser beam; the laser beam splitter comprises a fifth reflector, a sixth reflector, a seventh reflector and an eighth reflector, wherein the fifth reflector, the sixth reflector, the seventh reflector and the eighth reflector are respectively arranged on light paths of the third laser beam, the fourth laser beam, the fifth laser beam and the sixth laser beam, and the fifth reflector, the sixth reflector, the seventh reflector and the eighth reflector respectively reflect the third laser beam, the fourth laser beam, the fifth laser beam and the sixth laser beam; the central through hole is arranged at the intersection of the light paths of the third laser beam, the fourth laser beam, the fifth laser beam and the sixth laser beam, and is provided with at least four laser outlets, and the third laser beam, the fourth laser beam, the fifth laser beam and the sixth laser beam emit light through the four laser outlets and act on a target workpiece. The laser surface treatment of the cylindrical workpiece is convenient to realize, the device is simple, and the technical effects of improving the automation degree and the processing efficiency are achieved.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
Referring to fig. 1, the present embodiment provides a laser surface processing apparatus, including:
a laser generator 1 that emits an incident laser beam;
specifically, the laser generator 1 is a component of the device for emitting laser, the laser generator 1 emits the incident laser beam, and the laser generator 1 can use CO2Laser generator, NYAG laser generator, semiconductor laser generator or fiber laser generator.
A focusing assembly 2 for receiving and focusing the incident laser beam, wherein the focusing assembly 2 is arranged on the light path of the incident laser beam;
further, the focusing assembly 2 includes: the scanning galvanometer 21 changes the direction of the incident laser beam light path and scans the incident laser beam according to a preset angle, and the scanning galvanometer 21 is arranged on the light path of the incident laser beam and forms an included angle with the incident light axis of the incident laser beam; the focusing lens assembly 22 receives the scanned incident laser beam, the focusing lens assembly 22 is disposed on the optical path of the scanned incident laser beam, the focusing lens assembly 22 includes a focusing lens assembly 222 and a window 220, wherein the focusing lens assembly 222 focuses the incident laser beam and emits light through the window 220; the focusing assembly 221 is configured to match with the focusing lens assembly 22, and the focusing lens assembly 22 realizes focusing through the focusing assembly 221.
Further, the included angle between the scanning galvanometer 21 and the incident optical axis of the incident laser beam is 30-60 degrees.
Specifically, after the laser generator 1 emits the incident laser beam, the incident laser beam enters the focusing assembly 2 for focusing, the focusing assembly 2 is disposed on the optical path of the incident laser beam, wherein the focusing assembly 2 includes: the scanning galvanometer 21, the focusing lens assembly 22 and the focusing assembly 221, specifically, an included angle is formed between the scanning galvanometer 21 and an incident optical axis of the incident laser beam on a light path of the incident laser beam, preferably, the included angle between the scanning galvanometer 21 and the incident optical axis of the incident laser beam is 30-60 degrees, and generally 45 degrees can be selected; as shown in fig. 2, the focusing lens assembly 22 is disposed on the light path of the incident laser beam after scanning, and the focusing lens assembly 22 further includes a focusing lens assembly 222 and a window 220, that is, the focusing lens assembly 222 is a focusing lens assembly, and a proper number of focusing lenses can be selected according to actual needs, and the window 220 is a protection window, wherein the focusing lens assembly 222 focuses the incident laser beam and emits light through the window 220, the focusing lens assembly 22 focuses the incident laser beam by using the focusing lens assembly 222, and different focusing output faces are obtained by selecting different output focusing faces according to the type of the focusing lens assembly 222, for example, when the focusing lens is a field lens, a flat field output of the focusing face is obtained at this time; the focusing assembly 221 can adopt a guide rail slider mechanism, and further the focusing lens assembly 22 can realize the focusing function through the guide rail slider mechanism 221, so that the technical effects that the emergent laser forms a focus on the surfaces of cylindrical workpieces with different diameters through focusing and the focusing position can be changed to adjust the energy density required in the laser operation are achieved.
A light splitting assembly 3 for receiving the focused incident laser beam, wherein the light splitting assembly 3 is disposed on a light path of the focused incident laser beam, and the light splitting assembly 3 includes: a first beam splitter prism 31 that equally divides the incident laser beam into a first laser beam and a second laser beam; a first reflector 32, a second reflector 33, a third reflector 34, and a fourth reflector 35, where the first reflector 32 and the third reflector 34 are disposed on the light path of the first laser beam, and the second reflector 33 and the fourth reflector 35 are disposed on the light path of the second laser beam, where the first laser beam is sequentially bent by the first reflector 32 and the third reflector 34, and the second laser beam is sequentially bent by the second reflector 33 and the fourth reflector 35;
specifically, the light path advancing direction is that the incident laser beam emitted by the laser generator 1, that is, the collimated laser beam is scanned by the scanning galvanometer 21, enters the focusing lens assembly 22 for focusing, then enters the light splitting assembly 3, and then is split into two separated beams by the first light splitting prism 31, that is, a first laser beam and a second laser beam, the first light splitting prism 31 is disposed on the light path of the focused incident laser beam, meanwhile, the light splitting assembly 3 further includes a first reflecting mirror 32, a second reflecting mirror 33, a third reflecting mirror 34, and a fourth reflecting mirror 35, the first reflecting mirror 32, the second reflecting mirror 33, the third reflecting mirror 34, and the fourth reflecting mirror 35 are spatially symmetrical, the first laser beam is sequentially bent by the first reflecting mirror 32 and the third reflecting mirror 34, and the second laser beam is sequentially bent by the second reflecting mirror 33 and the fourth reflecting mirror 35, that is, the first laser beam and the second laser beam respectively pass through the first reflecting mirror 32 and the second reflecting mirror 33 to complete a first 45 ° turn, and then pass through the third reflecting mirror 34 and the fourth reflecting mirror 35 to complete a second 45 ° turn.
A second beam splitter prism 36 and a third beam splitter prism 37, wherein the second beam splitter prism 36 is disposed on the optical path of the first laser beam after being folded, the second beam splitter prism 36 equally divides the first laser beam into a third laser beam and a fourth laser beam, the third beam splitter prism 37 is disposed on the optical path of the second laser beam after being folded, and the third beam splitter prism 37 equally divides the second laser beam into a fifth laser beam and a sixth laser beam;
specifically, the light splitting assembly 3 further includes a second light splitting prism 36 and a third light splitting prism 37, the second light splitting prism 36 and the third light splitting prism 37 are spatially symmetrically arranged, the first laser beam after twice folding passes through the second light splitting prism 36 to be split, the first laser beam is equally divided into two laser beams, which are the third laser beam and the fourth laser beam respectively, the second laser beam after twice folding passes through the third light splitting prism 37 to be split, the second laser beam is equally divided into two laser beams, which are the fifth laser beam and the sixth laser beam respectively, in other words, the second light splitting prism 36 and the third light splitting prism 37 equally divide the scanning beam after once splitting into two beams having equal scanning lengths, so that the incident angle of the scanning center light beam thereon is 45 °, similarly, the second beam splitter prism 36 and the third beam splitter prism 37 may also be spatially offset so that the incident angle of the scanning central light beam on the reflection surface deviates by 45 °, that is, four laser beams with the same scanning length are obtained and then output.
A fifth mirror 38, a sixth mirror 39, a seventh mirror 40, and an eighth mirror 41, where the fifth mirror 38, the sixth mirror 39, the seventh mirror 40, and the eighth mirror 41 are respectively disposed on optical paths of the third laser beam, the fourth laser beam, the fifth laser beam, and the sixth laser beam, and the fifth mirror 38, the sixth mirror 39, the seventh mirror 40, and the eighth mirror 41 respectively reflect the third laser beam, the fourth laser beam, the fifth laser beam, and the sixth laser beam;
specifically, the light splitting assembly 3 further includes four mirrors, that is, a fifth mirror 38, a sixth mirror 39, a seventh mirror 40, and an eighth mirror 41, and meanwhile, each optical element and its frame are contained inside the housing of the light splitting assembly 3, the four mirrors are disposed in a spatially symmetric manner, so that the incident angle of the scanning central light beam thereon is 22.5 °, similarly, the four mirrors may also be disposed in a spatially slightly off-symmetric manner, the incident angle of the scanning central light beam thereon is 22.5 °, the total optical path of the four-way splitting optical path is equal, and the four light beams complete 360 ° circular closed-loop laser irradiation, and the spatial offset of the second splitting prism 36, the third splitting prism 37, and the four mirrors is favorable for obtaining a more compact spatial structure. Specifically, the fifth reflector 38, the sixth reflector 39, the seventh reflector 40, and the eighth reflector 41 are respectively disposed corresponding to the four laser outlets on the central through hole 42, and the third laser beam, the fourth laser beam, the fifth laser beam, and the sixth laser beam are respectively reflected by the four reflectors, and then emit light through the four laser windows of the central through hole 42, and form a laser focusing surface covering 360 ° of circumference at the center. Meanwhile, the target workpiece 43 passing through the central through hole 42 is irradiated on the cylindrical surface of the workpiece by laser beams from four directions, the scanning galvanometer 21 scans to complete the complete coverage of four segments of the circumference, the four beams of light complete the irradiation of 360-degree laser of the circumference, and the surface treatment of the material by the laser is completed through the interaction of the laser and the material. The processing device can complete laser operation on the cylindrical structure workpiece without rotating the target workpiece, can simplify the mechanism setting and improve the processing efficiency, simultaneously, the laser acts on the surface of the material in two time intervals from four directions, can reduce the influence of thermal stress on the workpiece in the laser operation, and is suitable for automatic operation of laser surface treatment.
And the central through hole 42 is formed in the intersection of the light paths of the third laser beam, the fourth laser beam, the fifth laser beam and the sixth laser beam, the central through hole 42 is provided with at least four laser outlets, and the third laser beam, the fourth laser beam, the fifth laser beam and the sixth laser beam emit light through the four laser outlets and act on the target workpiece 43.
Specifically, the central through hole 42 is a light outlet for each laser, and is configured by four rectangular protection windows, that is, a first to a fourth protection windows and respective mirror frame structures, which surround each other, and both ends of the target workpiece 43 are fixed by a transfer unit and pass through the central position of the central through hole 42 to perform a laser operation.
In the embodiment of the invention, the laser focusing covering 360-degree circumference is realized through the device, the laser surface treatment of the cylindrical workpiece can be realized without a rotating mechanism, the device is simple, and the technical effects of improving the automation degree and the processing efficiency are achieved.
Further, the apparatus further comprises: an optical isolator disposed inside the laser generator 1; or, a first light absorber 44 and a second light absorber 45, where the first light absorber 44 is disposed on the light path of the reflected sixth laser beam, the second light absorber 45 is disposed on the light path of the reflected fourth laser beam, and light absorbing coatings are disposed at the bottoms of the second beam splitter prism 36 and the third beam splitter prism 37.
Further, the apparatus further comprises: the second and third dichroic prisms 36 and 37 are different from the first dichroic prism 31.
Specifically, an optical isolator is further arranged inside the laser generator 1, so that echo laser light reflected by the surface of each element of the incident laser beam can be reversely blocked by the optical isolator, and the echo laser light cannot damage the elements inside the laser generator 1; simultaneously, when laser generator 1's inside does not contain during the optoisolator, accessible subassembly change or improvement this moment improve and realize the engineering practicality, promptly, the warp after eighth speculum 41 reflects the light path of sixth laser beam sets up first light absorber 44 is in the warp after sixth speculum 39 reflects the light path of fourth laser beam sets up second light absorber 45, just second beam splitter prism 36, third beam splitter prism 37 bottom are provided with the light absorption coating. So that the bottom surfaces of the second beam splitter prism 36 and the third beam splitter prism 37 can absorb the laser light reflected by the seventh reflector 40 and the fifth reflector 38 and passing through the target workpiece 43, the first light absorber 44 and the second light absorber 45 can absorb the laser light reflected by the eighth reflector 41 and the sixth reflector 39 and passing through the target workpiece 43, respectively, the residual laser light passing through the target workpiece 43 will not enter the laser generator again after being absorbed, and the second beam splitter prism 36 and the third beam splitter prism 37 are different from the first beam splitter prism 31.
Further, the apparatus further comprises: the window 220 is arranged perpendicular to the incident optical axis of the focused incident laser beam; or the normal 220 of the window is obliquely arranged relative to the incident optical axis of the focused incident laser beam, and the inclination angle is 5-15 degrees.
Specifically, when an optical isolator is included in the laser generator 1, the window 220 of the focusing lens assembly 22 is perpendicular to the incident optical axis of the focused incident laser beam, and the focusing lens assembly 22 focuses the scanning laser beam and outputs the focused laser beam; when laser generator 1's inside does not contain during the optoisolator, accessible subassembly change or improvement this moment improve and realize the engineering practicality, promptly, this moment, behind the relative focus of window 220 the incident optical axis slope installation of incident laser beam, window 220 is a protection window, and behind its relative focus of normal the incident optical axis of incident laser beam is installed with certain inclination 5-15 for inside the reflection laser through the window surface will not get into the laser instrument, thereby reached and prevented that the laser echo from causing the technical effect of damage to the inside device of laser generator.
Further, the apparatus further comprises: dust collectors provided at both sides of the central through hole 42.
Specifically, the dust collectors are arranged on two sides of the central through hole 42 of the light splitting assembly 3, and the dust collectors absorb tiny particles and dust generated on the surface of the target workpiece 43 in laser operation, so that the technical effects of protecting the device from damage and prolonging the service life of the device are achieved.
Further, the apparatus further comprises: a drive unit that drives axial movement of the target workpiece 36; a controller that controls the conveying speed of the target workpiece 43; a transfer unit connected to the driving unit and the controller, respectively, wherein the transfer unit conveys the target workpiece 43 under the control of the controller.
Specifically, the conveying unit is respectively connected to the driving unit and the controller, that is, the conveying unit is configured with the driving unit and the controller, so that the target workpiece 43 is axially transported at a uniform speed by the driving unit configured with the conveying unit and the controller, the conveying unit conveys the workpiece 43 to be processed at a certain speed under the control of the controller, and the conveying speed ranges from 10m/min to 100m/min, thereby achieving the technical effect of realizing the automatic laser operation of the workpiece with a long length.
Example two
A laser surface treatment apparatus according to the present application is described in detail below, as shown in fig. 2, specifically as follows:
when laser generator 1's inside does not contain during the optoisolator, accessible subassembly change or improvement this moment improve and realize the engineering practicality, promptly, is in the warp after eighth speculum 41 reflects the light path of sixth laser beam sets up first light absorber 44 is in the warp after sixth speculum 39 reflects the light path of fourth laser beam sets up second light absorber 45, just second beam splitter 36, third beam splitter 37 bottom are provided with the light absorption coating. So that the bottom surfaces of the second beam splitter prism 36 and the third beam splitter prism 37 can absorb the laser light reflected by the seventh mirror 40 and the fifth mirror 38 and passing through the target workpiece 43, the first light absorber 44 and the second light absorber 45 can absorb the laser light reflected by the eighth mirror 41 and the sixth mirror 39 and passing through the target workpiece 43, respectively, and the residual laser light passing through the target workpiece 43 can not enter the laser generator any more after being absorbed.
The fifth reflector 38, the sixth reflector 39, the seventh reflector 40, and the eighth reflector 41 are disposed in a manner slightly deviated from symmetry in space, the incident angle of the central scanning light beam thereon deviates from 22.5 °, the total optical path of the four split optical paths is equal, and the four beams of light complete circumferential 360 ° closed-loop laser irradiation, and the deviation of the four reflectors makes the included angle of the two reflected lights formed by the fifth reflector 38, the eighth reflector 41, the sixth reflector 39, and the seventh reflector 40 not less than θ, that is, the included angle of the reflected third laser beam and the sixth laser beam is not less than 10 °, the included angle of the reflected fourth laser beam and the fifth laser beam is not less than 10 °, so that the advancing direction of the residual laser light passing through the target workpiece 43 is respectively incident on the two second beam splitter prisms 36, the third beam splitter prism 37, the first light absorber 44, and the second light absorber 45, the above light absorption conditions are satisfied.
As shown in fig. 4, the focusing lens assembly 22 includes a focusing lens assembly 222, the window 220 is a protective window, and a normal line of the window is installed at an inclination angle of 5 ° to 15 ° with respect to an incident optical axis of the incident laser beam, so that the reflected laser beam passing through the surface of the window will not enter the laser, thereby achieving a technical effect of preventing the laser echo from damaging devices inside the laser generator.
EXAMPLE III
The following describes a laser surface treatment method of the present application in detail, specifically as follows:
the method comprises the following steps:
a laser generator emits the incident laser beam; focusing the incident laser beam emitted by the laser generator 1 through a focusing assembly 2; (ii) a
Specifically, by emitting the incident laser beam by the laser generator 1, the laser generator 1 may employ CO2A laser generator, a Nd-YAG laser generator, a semiconductor laser generator or a fiber laser generator, etc. After the laser generator 1 emits the incident laser beam, the collimated laser beam enters the focusing assembly 2 to be focused.
The focused incident laser beam enters the light splitting assembly 3 and is equally divided into a first laser beam and a second laser beam through the first light splitting prism 31, the first laser beam is sequentially bent through the first reflecting mirror 32 and the third reflecting mirror 34, and the second laser beam is sequentially bent through the second reflecting mirror 33 and the fourth reflecting mirror 35;
specifically, the light path advancing direction is that the collimated laser emitted from the laser generator 1 enters the focusing lens assembly 22 through the scanning galvanometer 21 for focusing, and then enters the light splitting assembly 3, and then the light beam is split into two separated beams, i.e., a first laser beam and a second laser beam, the first light splitting prism 31 is disposed on the light path of the focused incident laser beam, meanwhile, the light splitting assembly 3 further includes a first reflector 32, a second reflector 33, a third reflector 34, and a fourth reflector 35, the first reflector 32, the second reflector 33, the third reflector 34, and the fourth reflector 35 are spatially symmetrical, the first laser beam is sequentially bent through the first reflector 32 and the third reflector 34, and the second laser beam is sequentially bent through the second reflector 33 and the fourth reflector 35, that is, the first laser beam and the second laser beam respectively pass through the first reflecting mirror 32 and the second reflecting mirror 33 to complete a first 45 ° turn, and then pass through the third reflecting mirror 34 and the fourth reflecting mirror 35 to complete a second 45 ° turn.
The first laser beam after being bent is equally divided into a third laser beam and a fourth laser beam by a second beam splitter 36, and the second laser beam after being bent is equally divided into a fifth laser beam and a sixth laser beam by a third beam splitter 37;
specifically, the second beam splitter 36 and the third beam splitter 37 are spatially symmetrically disposed, the first laser beam after twice bending is split by the second beam splitter 36, the first laser beam is equally divided into two laser beams, which are the third laser beam and the fourth laser beam, the second laser beam after twice of folding is split by the third beam splitter prism 37, the second laser beam is equally divided into two laser beams, the fifth laser beam and the sixth laser beam, respectively, in other words, the second beam splitter prism 36 and the third beam splitter prism 37 divide the once split scanning beam equally into two beams having equal scanning lengths, the incident angle of the scanning central light ray is 45 degrees, namely, four laser beams with the same scanning length are obtained and then output.
And the third laser beam, the fourth laser beam, the fifth laser beam and the sixth laser beam are reflected by the fifth reflector 38, the sixth reflector 39, the seventh reflector 40 and the eighth reflector 41 respectively, and are emitted through four laser outlets of the central through hole 42, so that a laser focusing surface is formed in the central through hole 42 and is irradiated on the target workpiece 43.
Further, the method further comprises: the laser focusing surface is a focusing surface covering 360-degree circumference.
Specifically, the third laser beam, the fourth laser beam, the fifth laser beam, and the sixth laser beam are reflected by the fifth reflecting mirror 38, the sixth reflecting mirror 39, the seventh reflecting mirror 40, and the eighth reflecting mirror 41, respectively, and then emitted through the four laser windows of the central through hole 42, and a laser focusing surface covering a circumference of 360 ° is formed in the center. Meanwhile, the target workpiece 43 passing through the central through hole 42 is irradiated on the cylindrical surface of the workpiece by laser beams from four directions, the scanning galvanometer 21 scans to complete the complete coverage of four segments of the circumference, four beams of light complete the irradiation of 360-degree laser of the circumference, the surface treatment of the material by the laser is completed through the interaction of the laser and the material, and the axial transportation of the target workpiece 36 is driven by the driving unit to complete the laser operation of one segment of length; the processing method can complete the laser operation on the cylindrical workpiece without rotating the target workpiece, can simplify the mechanism setting and improve the processing efficiency, simultaneously, the laser acts on the surface of the material in two time intervals from four directions, can reduce the influence of thermal stress on the workpiece in the laser operation, and is suitable for the automatic operation of laser surface processing.
Example four
The present embodiment further provides a laser surface processing apparatus, please refer to fig. 5, which includes the following details:
a laser beam splitting method and device without scanning according to the first and second embodiments, which includes a laser generator 1, a focusing assembly 2 and a beam splitting assembly 3, wherein the focusing assembly 2 at least includes a focusing lens assembly 22, and may further include a spatial mirror for folding a light path, and the specific implementation of the focusing assembly 2 and the beam splitting assembly 3 refers to the first and second embodiments, as shown in fig. 1 to 4.
One or more technical solutions in the embodiments of the present invention at least have one or more of the following technical effects:
1. in an embodiment of the present invention, a laser surface treatment apparatus includes: a laser generator that emits an incident laser beam; a focusing assembly for receiving and focusing the incident laser beam, wherein the focusing assembly is arranged on the light path of the incident laser beam; a light splitting assembly that receives the focused incident laser beam, the light splitting assembly being disposed on a light path of the focused incident laser beam, wherein the light splitting assembly includes: a first beam splitter prism equally dividing the incident laser beam into a first laser beam and a second laser beam; the laser device comprises a first reflector, a second reflector, a third reflector and a fourth reflector, wherein the first reflector and the third reflector are arranged on a light path of a first laser beam, and the second reflector and the fourth reflector are arranged on a light path of a second laser beam, wherein the first laser beam is sequentially bent through the first reflector and the third reflector, and the second laser beam is sequentially bent through the second reflector and the fourth reflector; the laser system comprises a first laser beam, a second laser beam, a third laser beam and a third optical splitter prism, wherein the first laser beam is bent to be a first laser beam, the second laser beam is bent to be a second laser beam, the third laser beam is bent to be a third laser beam, the third optical splitter prism is arranged on the optical path of the second laser beam, and the third optical splitter prism is arranged on the optical path of the first laser beam; the laser beam splitter comprises a fifth reflector, a sixth reflector, a seventh reflector and an eighth reflector, wherein the fifth reflector, the sixth reflector, the seventh reflector and the eighth reflector are respectively arranged on light paths of the third laser beam, the fourth laser beam, the fifth laser beam and the sixth laser beam, and the fifth reflector, the sixth reflector, the seventh reflector and the eighth reflector respectively reflect the third laser beam, the fourth laser beam, the fifth laser beam and the sixth laser beam; the central through hole is arranged at the intersection of the light paths of the third laser beam, the fourth laser beam, the fifth laser beam and the sixth laser beam, and is provided with at least four laser outlets, and the third laser beam, the fourth laser beam, the fifth laser beam and the sixth laser beam emit light through the four laser outlets and act on a target workpiece. By the device, the technical problems that when the cylindrical workpiece is subjected to laser surface treatment in the prior art, rotary motion or multiple laser devices are required to be treated from different directions, the device is complex, the operation is complex, and the machining efficiency is low are solved, the aim of realizing 360-degree-coverage circumference laser focusing is achieved, the laser surface treatment of the cylindrical workpiece can be realized without a rotary mechanism, the device is simple, and the technical effects of improving the automation degree and the machining efficiency are achieved.
2. The embodiment of the application provides a light isolator, which is arranged inside the laser generator. The technical effect of avoiding damage to internal elements of the laser generator caused by echo laser is achieved.
3. This application embodiment is through first light absorber, second light absorber, first light absorber sets up after the reflection the light path of sixth laser beam, second light absorber sets up after the reflection the light path of fourth laser beam, just second beam splitting prism, third beam splitting prism bottom are provided with the light absorption coating. The technical effects of realizing residual laser absorption and avoiding damage to internal elements of the laser generator caused by echo laser are achieved.
4. The embodiment of the application provides a focusing assembly, wherein the focusing assembly is matched with the focusing lens assembly, and the focusing lens assembly realizes focusing through the focusing assembly. The technical effects that the condition that the emergent laser forms focus on the surfaces of cylindrical workpieces with different diameters is met through focusing, and the focusing position can be changed to adjust the energy density required in laser operation are achieved.
5. The normal of the window is obliquely arranged relative to the incident optical axis of the incident laser beam after being focused, and the inclination angle is 5-15 degrees. The technical effect of avoiding the damage of the echo laser to the internal elements of the laser generator is further achieved.
6. This application embodiment passes through the dust remover, the dust remover sets up the both sides of central through-hole. The technical effects of absorbing tiny particles and dust generated on the surface of a workpiece in laser operation and prolonging the service life of the device are achieved.
7. The embodiment of the invention provides a laser surface treatment method, which comprises the following steps: a laser generator emits the incident laser beam; focusing the incident laser beam emitted by the laser generator through a focusing assembly; the focused incident laser beam enters a light splitting assembly and is equally divided into a first laser beam and a second laser beam through a first light splitting prism, the first laser beam is sequentially bent through a first reflecting mirror and a third reflecting mirror, and the second laser beam is sequentially bent through a second reflecting mirror and a fourth reflecting mirror; the first laser beam after being bent is equally divided into a third laser beam and a fourth laser beam through the second beam splitter prism, and the second laser beam after being bent is equally divided into a fifth laser beam and a sixth laser beam through the third beam splitter prism; and enabling the third laser beam, the fourth laser beam, the fifth laser beam and the sixth laser beam to respectively pass through the fifth reflector, the sixth reflector, the seventh reflector and the eighth reflector for reflection, and emitting light through four laser outlets of the central through hole, so as to form a laser focusing surface at the central through hole and irradiate the laser focusing surface on a target workpiece. The technical problems that when the cylindrical workpiece is subjected to laser surface treatment in the prior art, rotary motion or multiple laser devices are required to be treated from different directions, the device is complex, the operation is complex, and the machining efficiency is low are solved, the aim of covering 360-degree circumference laser focusing is achieved, the laser surface treatment of the cylindrical workpiece can be realized without a rotary mechanism, the device is simple, and the technical effects of improving the automation degree and the machining efficiency are achieved.
8. The embodiment of the application passes through the laser focus face is for covering the focus face of 360 circumferences, has further solved among the prior art when carrying out laser surface treatment to the cylinder work piece, needs rotary motion or many laser equipment to carry out the technical problem who handles from the equidirectional, has reached and has realized covering 360 circumference laser focusing, need not rotary mechanism can realize the laser surface treatment of cylinder work piece, realizes automatic operation, improves machining efficiency's technological effect.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various modifications and variations can be made in the embodiments of the present invention without departing from the spirit or scope of the embodiments of the invention. Thus, if such modifications and variations of the embodiments of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to encompass such modifications and variations.
Claims (9)
1. A laser surface treatment apparatus, characterized in that the apparatus comprises:
a laser generator that emits an incident laser beam;
a focusing assembly for receiving and focusing the incident laser beam, wherein the focusing assembly is arranged on the light path of the incident laser beam;
a light splitting assembly that receives the focused incident laser beam, the light splitting assembly being disposed on a light path of the focused incident laser beam, wherein the light splitting assembly includes:
a first beam splitter prism equally dividing the incident laser beam into a first laser beam and a second laser beam;
the laser device comprises a first reflector, a second reflector, a third reflector and a fourth reflector, wherein the first reflector and the third reflector are arranged on a light path of a first laser beam, and the second reflector and the fourth reflector are arranged on a light path of a second laser beam, wherein the first laser beam is sequentially bent through the first reflector and the third reflector, and the second laser beam is sequentially bent through the second reflector and the fourth reflector;
the laser system comprises a first laser beam, a second laser beam, a third laser beam and a third optical splitter prism, wherein the first laser beam is bent to be a first laser beam, the second laser beam is bent to be a second laser beam, the third laser beam is bent to be a third laser beam, the third optical splitter prism is arranged on the optical path of the second laser beam, and the third optical splitter prism is arranged on the optical path of the first laser beam;
the laser beam splitter comprises a fifth reflector, a sixth reflector, a seventh reflector and an eighth reflector, wherein the fifth reflector, the sixth reflector, the seventh reflector and the eighth reflector are respectively arranged on light paths of the third laser beam, the fourth laser beam, the fifth laser beam and the sixth laser beam, and the fifth reflector, the sixth reflector, the seventh reflector and the eighth reflector respectively reflect the third laser beam, the fourth laser beam, the fifth laser beam and the sixth laser beam;
the central through hole is arranged at the intersection of the light paths of the third laser beam, the fourth laser beam, the fifth laser beam and the sixth laser beam, and is provided with at least four laser outlets, and after the light is emitted from the four laser outlets of the central through hole, the third laser beam, the fourth laser beam, the fifth laser beam and the sixth laser beam form a laser focusing surface covering 360-degree circumference at the center and act on a target workpiece.
2. The laser surface treatment apparatus of claim 1, wherein the apparatus further comprises:
an optical isolator disposed inside the laser generator;
or, the first light absorber is arranged on the light path of the reflected sixth laser beam, the second light absorber is arranged on the light path of the reflected fourth laser beam, and light absorbing coatings are arranged at the bottoms of the second light splitting prism and the third light splitting prism.
3. The laser surface treatment apparatus of claim 1, wherein the focusing assembly comprises:
the scanning galvanometer is arranged on the light path of the incident laser beam and forms an included angle with the incident light axis of the incident laser beam;
the focusing lens assembly is arranged on a light path of the scanned incident laser beam and comprises a focusing lens assembly and a window, wherein the focusing lens assembly focuses the incident laser beam and emits light through the window;
the focusing assembly is matched with the focusing lens assembly, and the focusing lens assembly realizes focusing through the focusing assembly.
4. The laser surface treatment apparatus of claim 3, further comprising:
the window is arranged perpendicular to the incident optical axis of the focused incident laser beam;
or the normal of the window is obliquely arranged relative to the incident optical axis of the incident laser beam after focusing, and the inclination angle is 5-15 degrees.
5. The laser surface treatment apparatus of claim 1, wherein the apparatus further comprises:
and the dust collectors are arranged on two sides of the central through hole.
6. The laser surface treatment apparatus of claim 1, wherein the apparatus further comprises:
a drive unit that drives axial movement of the target workpiece;
a controller that controls a conveying speed of the target workpiece;
and the conveying unit is respectively connected with the driving unit and the controller, and the conveying unit conveys the target workpiece under the control of the controller.
7. The laser surface treatment apparatus of claim 3, further comprising:
the included angle between the scanning galvanometer and the incident optical axis of the incident laser beam is 30-60 degrees.
8. The laser surface treatment apparatus of claim 1, wherein the apparatus further comprises:
the second light splitting prism and the third light splitting prism are different from the first light splitting prism.
9. A laser surface treatment method applied to the laser surface treatment apparatus according to any one of claims 1 to 8, the method comprising:
a laser generator emits the incident laser beam;
focusing the incident laser beam emitted by the laser generator through the focusing assembly;
the focused incident laser beam enters the light splitting assembly and is equally divided into a first laser beam and a second laser beam through the first light splitting prism, the first laser beam is sequentially bent through the first reflecting mirror and the third reflecting mirror, and the second laser beam is sequentially bent through the second reflecting mirror and the fourth reflecting mirror;
the first laser beam after being bent is equally divided into a third laser beam and a fourth laser beam through the second beam splitter prism, and the second laser beam after being bent is equally divided into a fifth laser beam and a sixth laser beam through the third beam splitter prism;
and enabling the third laser beam, the fourth laser beam, the fifth laser beam and the sixth laser beam to respectively pass through the fifth reflector, the sixth reflector, the seventh reflector and the eighth reflector, and to emit light through four laser outlets of the central through hole, so as to form a laser focusing surface on the central through hole and irradiate the laser focusing surface on a target workpiece, wherein the laser focusing surface is a focusing surface covering 360-degree circumference.
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| CN112817147B (en) * | 2021-01-04 | 2023-01-10 | 上海镭天激光设备有限公司 | Octahedral prism device for high-speed one-dimensional high-power laser scanning |
| CN113146052B (en) * | 2021-04-12 | 2023-03-24 | 江苏大学 | Laser shot peening strengthening device and machining method for thin-wall annular part |
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