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CN110938817A - Rectangular light spot cladding device with coaxial powder feeding in light - Google Patents

Rectangular light spot cladding device with coaxial powder feeding in light Download PDF

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Publication number
CN110938817A
CN110938817A CN201911233535.2A CN201911233535A CN110938817A CN 110938817 A CN110938817 A CN 110938817A CN 201911233535 A CN201911233535 A CN 201911233535A CN 110938817 A CN110938817 A CN 110938817A
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light
sub
rectangular
powder feeding
mirror
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王晓飚
汤波
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Xi'an Besame Laser Technology Co Ltd
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Xi'an Besame Laser Technology Co Ltd
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    • CCHEMISTRY; METALLURGY
    • C23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C24/00Coating starting from inorganic powder
    • C23C24/08Coating starting from inorganic powder by application of heat or pressure and heat
    • C23C24/10Coating starting from inorganic powder by application of heat or pressure and heat with intermediate formation of a liquid phase in the layer
    • C23C24/103Coating with metallic material, i.e. metals or metal alloys, optionally comprising hard particles, e.g. oxides, carbides or nitrides

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  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Laser Beam Processing (AREA)

Abstract

The invention provides a rectangular light spot cladding device for in-light coaxial powder feeding, which solves the problem of low powder utilization rate caused by coaxial powder feeding or paraxial powder feeding in the existing laser processing production. The device comprises a fiber laser, a collimating mirror group, a light splitting unit, a first integrating mirror, a second integrating mirror and a rectangular powder feeding head; the collimating lens group is positioned in an emergent light path of the fiber laser, collimates the laser beam with a divergence angle output by the fiber laser into a parallel circular beam and transmits the parallel circular beam to the light splitting unit; the light splitting unit splits the parallel circular light beam into two light beams, and the two light beams are respectively reflected to the first integrating mirror and the second integrating mirror; the first integrating mirror reflects one path of light beam to form a first sub-light beam; the second integrator reflects the other light beam to form a second sub-light beam, and light spots of the first sub-light beam and the second sub-light beam at the molten pool are rectangular light spots; the rectangular powder feeding head is arranged between the first sub-beam and the second sub-beam; the rectangular powder feeding head is provided with a nozzle; the first sub-beam and the second sub-beam are intersected in the powder discharging direction of the nozzle.

Description

Rectangular light spot cladding device with coaxial powder feeding in light
Technical Field
The invention belongs to a laser cladding technology, and particularly relates to a rectangular light spot cladding device for in-light coaxial powder feeding.
Background
The laser cladding technology is an advanced manufacturing technology combining a laser technology and a processing technology, and develops rapidly in recent years. As an advanced surface modification technology, the method is widely applied to surface modification of materials and repair of failed parts, solves a plurality of problems in engineering practice, and creates huge economic benefits in the engineering practice.
In the current common laser processing production, a coaxial powder feeding technology or a paraxial powder feeding technology is generally adopted, and the coaxial powder feeding technology or the paraxial powder feeding technology is actually light external powder feeding of powder-coated laser. However, the laser and powder feeding by light causes short action time of laser and powder, and the utilization rate of the powder is not high, thereby affecting the laser processing efficiency.
Disclosure of Invention
The invention provides a rectangular light spot cladding device for in-light coaxial powder feeding, which aims to solve the technical problems that the action time of laser and powder is short, the utilization rate of the powder is low and the laser processing efficiency is influenced because the coaxial powder feeding or paraxial powder feeding is adopted in the existing laser processing production.
In order to achieve the purpose, the technical scheme provided by the invention is as follows:
a rectangular light spot cladding device with coaxial powder feeding in light is characterized in that: the device comprises a fiber laser, a collimating lens group, a light splitting unit, a first integrating mirror, a second integrating mirror and a rectangular powder feeding head; the optical fiber laser is used for outputting a laser beam with a divergence angle; the collimating lens group is positioned in an emergent light path of the fiber laser and is used for collimating a laser beam with a divergence angle output by the fiber laser into a parallel circular beam and transmitting the parallel circular beam to the light splitting unit; the light splitting unit is used for splitting the parallel circular light beams into two light beams, and the two light beams are respectively reflected to the first integrating mirror and the second integrating mirror; the first integrating mirror is used for reflecting one path of light beam to form a first sub-light beam, and a light spot of the first sub-light beam at the position of the molten pool is a rectangular light spot; the second integrating mirror is used for reflecting the other path of light beam to form a second sub-light beam, and the light spot of the second sub-light beam at the molten pool is a rectangular light spot; the rectangular powder feeding head is arranged between the first sub-beam and the second sub-beam; the rectangular powder feeding head is provided with a nozzle; the first sub-beam and the second sub-beam are intersected, and the intersection position is located in the powder discharging direction of the nozzle.
Further, the light splitting unit is a right-angle prism reflector or a light splitting prism.
Further, the light splitting unit comprises a half-transmitting half-reflecting mirror and a plane reflecting mirror; the semi-transparent semi-reflecting mirror is positioned in an emergent light path of the collimating mirror group, circular light beams output by the collimating mirror group are incident to the first integrating mirror after passing through the semi-transparent semi-reflecting mirror, and transmitted light is incident to the plane reflecting mirror and is incident to the second integrating mirror after being reflected by the plane reflecting mirror.
Furthermore, an included angle between the semi-transparent semi-reflecting mirror and an emergent light path of the collimating mirror group is 45 degrees;
the included angle between the plane reflector and the semi-transparent semi-reflecting mirror is 90 degrees.
Furthermore, an angular bisector of an included angle formed by the central line of the first sub-beam and the central line of the second sub-beam is collinear with the central line of the rectangular powder feeding head; the nozzle is arranged at one end of the rectangular powder feeding head far away from the light splitting unit.
Further, the distance between the intersection position of the light beams and the nozzle is 8-20 mm.
Further, the collimator lens group comprises one or more lenses.
The invention also provides a rectangular light spot cladding device for coaxially feeding powder in light, which is characterized in that: the device comprises an optical fiber output semiconductor laser, a collimating lens group, a light splitting unit, a first integrating mirror, a second integrating mirror and a rectangular powder feeding head; the semiconductor laser is used for outputting a laser beam with a divergence angle; the collimating lens group is positioned in an emergent light path of the optical fiber output semiconductor laser and is used for collimating laser beams output by the optical fiber output semiconductor laser and provided with divergence angles into parallel circular beams and transmitting the beams to the light splitting unit;
the light splitting unit is used for splitting the parallel circular light beams into two light beams, and the two light beams are respectively reflected to the first integrating mirror and the second integrating mirror; the first integrating mirror is used for reflecting one path of light beam to form a first sub-light beam, and a light spot of the first sub-light beam at the position of the molten pool is a rectangular light spot; the second integrating mirror is used for reflecting the other path of light beam to form a second sub-light beam, and the light spot of the second sub-light beam at the molten pool is a rectangular light spot; the rectangular powder feeding head is arranged between the first sub-beam and the second sub-beam; the rectangular powder feeding head is provided with a nozzle; the first sub-beam and the second sub-beam are intersected, and the intersection position is located in the powder discharging direction of the nozzle.
Further, the light splitting unit is a right-angle prism reflector or a light splitting prism.
Further, the light splitting unit comprises a half-transmitting half-reflecting mirror and a plane reflecting mirror; the semi-transparent semi-reflecting mirror is positioned in an emergent light path of the collimating mirror group, circular light beams output by the collimating mirror group are incident to the first integrating mirror after passing through the semi-transparent semi-reflecting mirror, and transmitted light is incident to the plane reflecting mirror and is incident to the second integrating mirror after being reflected by the plane reflecting mirror.
Compared with the prior art, the invention has the advantages that:
1. after laser beams emitted by a laser in the rectangular light spot cladding device are collimated by a collimating lens group, split by a splitting unit and reflected by an integrator in sequence, the two beams of the laser beams intersect to form a molten pool, cladding powder beams of a rectangular powder feeding head directly fall into the molten pool after coming out of a nozzle, the cladding powder beams are accurate and have small divergence angles, and the requirement of laser cladding processing and forming is met;
meanwhile, the powder beam is positioned in the light beam, the interference with the light beam is less, the energy loss is less, the full utilization of the laser power is ensured, and compared with the traditional method of feeding powder laterally outside the light or feeding powder coaxially outside the light, the utilization rate of the cladding powder beam is effectively improved, the cladding processing efficiency is improved, and the cladding processing cost is reduced.
2. The light splitting unit in the rectangular light spot cladding device can be a right-angle prism reflector or a light splitting prism or a semi-transparent semi-reflecting mirror and a plane reflector, can be selected according to the working environment, and has a wide application range.
3. According to the rectangular light spot cladding device, the cladding effect is best on the angle bisector of the included angle formed by the central line of the first sub-beam and the central line of the second sub-beam.
4. The rectangular light spot cladding device realizes the optical internal powder feeding, compared with the optical external powder feeding, the optical internal powder feeding increases the acting time between laser and powder, improves the utilization rate of the powder and further improves the processing efficiency.
Drawings
FIG. 1 is a schematic view of an optical structure of a first embodiment of a rectangular spot cladding apparatus for coaxial powder feeding in light according to the present invention;
FIG. 2 is a schematic view of an optical structure of a second embodiment of the rectangular spot cladding apparatus for coaxial powder feeding in light according to the present invention;
FIG. 3 is a schematic view of an optical structure of a third embodiment of the rectangular spot cladding apparatus for coaxial powder feeding in light according to the present invention;
wherein the reference numbers are as follows:
1-fiber laser, 2-collimating mirror group, 3-right-angle prism reflector, 4-first integrator, 5-second integrator, 6-rectangular powder feeding head, 61-nozzle, 7-molten pool, 8-beam splitter prism, 9-semi-transparent semi-reflecting mirror, 10-plane reflector, 11-laser beam, 12-circular beam, 13-first sub-beam, 14-second sub-beam and 15-powder beam.
Detailed Description
The invention is described in further detail below with reference to the figures and specific embodiments.
Example one
As shown in fig. 1, a rectangular light spot cladding device for coaxial powder feeding in light comprises an optical fiber laser 1 having an optical fiber interface and a laser beam light outlet, a collimating lens group, a right-angle prism reflector 3 and a rectangular powder feeding head 6 are sequentially installed behind the laser beam light outlet, a first integrating lens 4 and a second integrating lens 5 are symmetrically arranged at two sides of the right-angle prism reflector 3, a laser beam 11 with a certain angle emitted by the laser 1 is collimated into a parallel circular light beam 12 by the collimating lens group, the collimating lens group 2 can be a lens or a group of lenses, the circular light beam 12 is divided into two beams by the right-angle prism reflector 3, the two beams 12 are respectively reflected to the first integrating lens 4 and the second integrating lens 5, wherein one beam is reflected by the first integrating lens 4 to form a first sub-beam 13, and a light spot of the first sub-beam 13 at a molten pool is a rectangular light spot; the other light beam 12 is reflected by the second integrating mirror 5 to form a second sub-light beam 14, a light spot of the second sub-light beam 14 at the molten pool is a rectangular light spot, the first sub-light beam 13 and the second sub-light beam 14 are intersected, the intersection position is the molten pool 7, a required rectangular light spot is formed at the position, the rectangular powder feeding head 6 is placed below the right-angle prism reflecting mirror 3 and is positioned between the first sub-light beam 13 and the second sub-light beam 14, the rectangular powder feeding head 6 is provided with a nozzle 61 (powder outlet), and powder is vertically and downwards sent into the molten pool 7 by the powder beam 15 sent out by the nozzle 61, so that cladding processing is completed. In order to improve the cladding effect, the central line of the rectangular powder feeding head 6 is collinear with the bisector of the included angle formed by the first sub-beam 13 and the second sub-beam 14, and the nozzle 61 is arranged at one end of the rectangular powder feeding head 6 far away from the right-angle prism reflector 3.
The distance between the beam intersection position (melt pool) and the nozzle 61 may be 8-20 mm; the integrator mirror is a strip integrator mirror and converts the light beam reflected by the right-angle prism reflector 3 into a rectangular light spot of a molten pool.
The movement track of the powder beam 15 of the spot cladding device of the embodiment is vertically downward, the powder beam 15 directly and vertically falls into the molten pool 7 after coming out from the nozzle 61, the accuracy is realized, the divergence angle is small, and the requirement of laser cladding processing and forming is met. Meanwhile, the powder beam 15 is positioned in the light beam, the interference with the light beam is less, the energy loss is less, the full utilization of the laser power is ensured, and compared with the traditional method of feeding powder laterally outside the light or feeding powder coaxially outside the light, the utilization rate of metal alloy powder is effectively improved, the utilization rate of the powder is improved, the processing efficiency of cladding is improved, and the processing cost of cladding is reduced.
Example two
As shown in fig. 2, a rectangular light spot cladding device for coaxial powder feeding in light comprises an optical fiber laser 1 having an optical fiber interface and a laser beam light outlet, a collimating lens group, a beam splitter prism 8 and a rectangular powder feeding head 6 are sequentially installed behind the laser beam light outlet, a first integrating lens 4 and a second integrating lens 5 are symmetrically arranged at two sides of the beam splitter prism 8, a laser beam 11 emitted by the laser 1 and having a certain angle is collimated into a parallel circular beam 12 by the collimating lens group, the circular beam 12 is divided into two beams by the beam splitter prism 8, the two beams 12 are respectively reflected to the first integrating lens 4 and the second integrating lens 5, one beam is reflected by the first integrating lens 4 to form a first sub-beam 13, and a light spot of the first sub-beam 13 at a molten pool is a rectangular light spot; the other path of circular beam 12 is reflected by the second integrating mirror 5 to form a second sub-beam 14, a light spot of the second sub-beam 14 at the molten pool is a rectangular light spot, the first sub-beam 13 and the second sub-beam 14 are intersected, the intersection position is the molten pool 7, a required rectangular light spot is formed at the position, the rectangular powder feeding head 6 is placed below the beam splitter prism 8 and is positioned between the first sub-beam 13 and the second sub-beam 14, the rectangular powder feeding head 6 is provided with a nozzle 61, the intersection position of the first sub-beam 13 and the second sub-beam 14 is positioned in the powder discharging direction of the nozzle 61, and a powder beam 15 sent out by the nozzle 61 vertically sends powder downwards into the molten pool 7 to complete cladding processing. In order to improve the cladding effect, the central line of the rectangular powder feeding head 6 is collinear with the angle bisector of the included angle formed by the first sub-beam 13 and the second sub-beam 14. The distance between the beam intersection position (melt pool) and the nozzle 61 may be 8-20 mm.
The movement track of the powder beam 15 of the spot cladding device of the embodiment is vertically downward, the powder beam 15 directly and vertically falls into the molten pool 7 after coming out from the nozzle 61, the accuracy is realized, the divergence angle is small, and the requirement of laser cladding processing and forming is met. Meanwhile, the powder beam 15 is positioned in the light beam, the interference with the light beam is less, the energy loss is less, the full utilization of the laser power is ensured, and compared with the traditional method of feeding powder laterally outside the light or feeding powder coaxially outside the light, the utilization rate of metal alloy powder is effectively improved, the utilization rate of the powder is improved, the processing efficiency of cladding is improved, and the processing cost of cladding is reduced.
EXAMPLE III
As shown in fig. 3, a rectangular light spot cladding device for coaxial powder feeding in light comprises an optical fiber laser 1 having an optical fiber interface and a laser beam light outlet, a collimating lens group, a semi-transparent and semi-reflective lens 9, a plane reflective lens 10 and a rectangular powder feeding head 6 are sequentially installed behind the laser beam light outlet, a first integrating lens 4 and a second integrating lens 5 are located at two sides of the semi-transparent and semi-reflective lens 9, a laser beam 11 with a certain angle emitted by the laser 1 is collimated into a parallel circular light beam 12 by the collimating lens group, the circular light beam 12 is divided into two beams by the semi-transparent and semi-reflective lens 9, reflected light is incident to the first integrating lens 4 and reflected by the first integrating lens 4 to form a first sub-light beam 13, and a light spot of the first sub-light beam 13 at a molten pool is a rectangular light spot; the transmitted light is incident to the plane reflector 10, is incident to the second integrating mirror 5 after being reflected by the plane reflector 10, and is reflected by the second integrating mirror 5 to form a second sub-beam 14, and a light spot of the second sub-beam 14 at the molten pool is a rectangular light spot; the first sub-beam 13 and the second sub-beam 14 are intersected, the intersection position is a molten pool 7, a required rectangular light spot is formed at the position, the rectangular powder feeding head 6 is arranged below the beam splitter prism 8 and between the first sub-beam 13 and the second sub-beam 14, the rectangular powder feeding head 6 is provided with a nozzle 61, and powder 15 sent out by the nozzle 61 vertically sends powder downwards into the molten pool 7 to complete cladding processing. The included angle between the semi-transparent semi-reflecting mirror 9 and the emergent light path of the collimating mirror group is 45 degrees, and the included angle between the plane reflecting mirror 10 and the semi-transparent semi-reflecting mirror 9 is 90 degrees; in order to improve the cladding effect, the central line of the rectangular powder feeding head 6 is collinear with the angle bisector of the included angle formed by the first sub-beam 13 and the second sub-beam 14. The distance between the beam intersection position (melt pool) and the nozzle 61 may be 8-20 mm.
The movement track of the powder beam 15 of the spot cladding device of the embodiment is vertically downward, the powder beam 15 directly and vertically falls into the molten pool 7 after coming out from the nozzle 61, the accuracy is realized, the divergence angle is small, and the requirement of laser cladding processing and forming is met. Meanwhile, the powder beam 15 is positioned in the light beam, the interference with the light beam is less, the energy loss is less, the full utilization of the laser power is ensured, and compared with the traditional method of feeding powder laterally outside the light or feeding powder coaxially outside the light, the utilization rate of metal alloy powder is effectively improved, the utilization rate of the powder is improved, the processing efficiency of cladding is improved, and the processing cost of cladding is reduced.
Example four
The difference from the first embodiment is that the fiber laser 1 may be a semiconductor laser having a fiber output.
The above description is only for the preferred embodiment of the present invention, and the technical solution of the present invention is not limited thereto, and any known modifications made by those skilled in the art based on the main technical idea of the present invention, for example, prism mirrors and other forms of mirror composition are also within the technical scope of the present invention.

Claims (10)

1.一种光内同轴送粉的矩形光斑熔覆装置,其特征在于:包括光纤激光器(1)、准直镜组(2)、分光单元、第一积分镜(4)、第二积分镜(5)、矩形送粉头(6);1. A rectangular light spot cladding device for coaxial powder feeding in light, characterized in that: comprising a fiber laser (1), a collimating mirror group (2), a spectroscopic unit, the first integrator (4), the second integrator Mirror (5), rectangular powder feeding head (6); 所述光纤激光器(1)用于输出带有发散角的激光束(11);The fiber laser (1) is used for outputting a laser beam (11) with a divergence angle; 所述准直镜组(2)位于光纤激光器(1)的出射光路中,用于将光纤激光器(1)输出带有发散角的激光束(11)准直成平行的圆形光束(12),并透射至分光单元;The collimating lens group (2) is located in the outgoing optical path of the fiber laser (1), and is used for collimating a laser beam (11) with a divergence angle output by the fiber laser (1) into a parallel circular beam (12) ), and transmitted to the beam splitting unit; 所述分光单元用于将平行的圆形光束(12)分为两路光束,两路光束分别反射至第一积分镜(4)和第二积分镜(5);The light splitting unit is used for dividing the parallel circular light beam (12) into two beams, and the two beams are respectively reflected to the first integrator (4) and the second integrator (5); 所述第一积分镜(4)用于将其中一路光束反射形成第一子光束(13),第一子光束(13)在熔池(7)处的光斑为矩形光斑;The first integrator (4) is used for reflecting one of the light beams to form a first sub-beam (13), and the light spot of the first sub-beam (13) at the molten pool (7) is a rectangular light spot; 所述第二积分镜(5)用于将另一路光束反射形成第二子光束(14),第二子光束(14)在熔池(7)处的光斑为矩形光斑;The second integrator (5) is used for reflecting another light beam to form a second sub-beam (14), and the light spot of the second sub-beam (14) at the molten pool (7) is a rectangular light spot; 所述矩形送粉头(6)设置在第一子光束(13)和第二子光束(14)之间;The rectangular powder feeding head (6) is arranged between the first sub-beam (13) and the second sub-beam (14); 所述矩形送粉头(6)上设有喷嘴(61);The rectangular powder feeding head (6) is provided with a nozzle (61); 所述第一子光束(13)和第二子光束(14)相交,且相交位置处于喷嘴(61)的出粉方向上。The first sub-beam (13) and the second sub-beam (14) intersect, and the intersecting position is in the powder output direction of the nozzle (61). 2.根据权利要求1所述光内同轴送粉的矩形光斑熔覆装置,其特征在于:所述分光单元为直角棱镜反射镜(3)或者分光棱镜(8)。2 . The rectangular light spot cladding device for coaxial powder feeding in light according to claim 1 , wherein the light splitting unit is a right angle prism reflecting mirror ( 3 ) or a light splitting prism ( 8 ). 3 . 3.根据权利要求1所述光内同轴送粉的矩形光斑熔覆装置,其特征在于:所述分光单元包括一个半透半反镜(9)和一个平面反射镜(10);3. The rectangular light spot cladding device for coaxial powder feeding in light according to claim 1, wherein the light splitting unit comprises a half mirror (9) and a plane mirror (10); 所述半透半反镜(9)位于准直镜组(2)的出射光路中,准直镜组(2)输出的圆形光束(12)经半透半反镜(9)后,反射光入射至第一积分镜(4),透射光入射至所述平面反射镜(10),并经平面反射镜(10)反射后入射至第二积分镜(5)。The half mirror (9) is located in the outgoing light path of the collimating mirror group (2), and the circular light beam (12) output by the collimating mirror group (2) passes through the half mirror (9), The reflected light is incident on the first integrator (4), the transmitted light is incident on the plane mirror (10), and is reflected by the plane mirror (10) and then incident on the second integrator (5). 4.根据权利要求3所述光内同轴送粉的矩形光斑熔覆装置,其特征在于:所述半透半反镜(9)与准直镜组(2)出射光路之间的夹角为45°;4. The rectangular light spot cladding device for coaxial powder feeding in light according to claim 3, characterized in that: a clamp between the half mirror (9) and the exit light path of the collimating mirror group (2) The angle is 45°; 所述平面反射镜(10)与半透半反镜(9)之间的夹角为90°。The included angle between the plane mirror (10) and the half mirror (9) is 90°. 5.根据权利要求1至4任一所述光内同轴送粉的矩形光斑熔覆装置,其特征在于:所述第一子光束(13)中心线和第二子光束(14)中心线所形成夹角的角平分线与矩形送粉头(6)的中心线共线;5. The rectangular spot cladding device for coaxial powder feeding in light according to any one of claims 1 to 4, characterized in that: the center line of the first sub-beam (13) and the center line of the second sub-beam (14) The bisector of the formed angle is collinear with the center line of the rectangular powder feeding head (6); 所述喷嘴(61)设置在矩形送粉头(6)远离分光单元的一端。The nozzle (61) is arranged at one end of the rectangular powder feeding head (6) away from the light splitting unit. 6.根据权利要求5所述光内同轴送粉的矩形光斑熔覆装置,其特征在于:光束相交位置与喷嘴(61)之间的距离为8-20mm。6 . The rectangular light spot cladding device for coaxial powder feeding in light according to claim 5 , wherein the distance between the beam intersection position and the nozzle ( 61 ) is 8-20 mm. 7 . 7.根据权利要求6所述光内同轴送粉的矩形光斑熔覆装置,其特征在于:所述准直镜组(2)包括一个或者多个透镜。7 . The rectangular spot cladding device for coaxial powder feeding in light according to claim 6 , wherein the collimating lens group ( 2 ) comprises one or more lenses. 8 . 8.一种光内同轴送粉的矩形光斑熔覆装置,其特征在于:包括光纤输出半导体激光器、准直镜组(2)、分光单元、第一积分镜(4)、第二积分镜(5)、矩形送粉头(6);8. A rectangular spot cladding device for coaxial powder feeding in light, characterized in that it comprises a fiber output semiconductor laser, a collimating mirror group (2), a light splitting unit, a first integrator (4), a second integrator (5), rectangular powder feeding head (6); 所述光纤输出半导体激光器用于输出带有发散角的激光束(11);The fiber output semiconductor laser is used for outputting a laser beam (11) with a divergence angle; 所述准直镜组(2)位于光纤输出半导体激光器的出射光路中,用于将光纤输出半导体激光器输出带有发散角的激光束(11)准直成平行的圆形光束(12),并透射至分光单元;The collimating lens group (2) is located in the outgoing optical path of the optical fiber output semiconductor laser, and is used for collimating a laser beam (11) with a divergence angle output by the optical fiber output semiconductor laser into a parallel circular beam (12), and transmitted to the beam splitting unit; 所述分光单元用于将平行的圆形光束(12)分为两路光束,两路光束分别反射至第一积分镜(4)和第二积分镜(5);The light splitting unit is used for dividing the parallel circular light beam (12) into two beams, and the two beams are respectively reflected to the first integrator (4) and the second integrator (5); 所述第一积分镜(4)用于将其中一路光束反射形成第一子光束(13),第一子光束(13)在熔池(7)处的光斑为矩形光斑;The first integrator (4) is used for reflecting one of the light beams to form a first sub-beam (13), and the light spot of the first sub-beam (13) at the molten pool (7) is a rectangular light spot; 所述第二积分镜(5)用于将另一路光束反射形成第二子光束(14),第二子光束(14)在熔池(7)处的光斑为矩形光斑;The second integrator (5) is used for reflecting another light beam to form a second sub-beam (14), and the light spot of the second sub-beam (14) at the molten pool (7) is a rectangular light spot; 所述矩形送粉头(6)设置在第一子光束(13)和第二子光束(14)之间;The rectangular powder feeding head (6) is arranged between the first sub-beam (13) and the second sub-beam (14); 所述矩形送粉头(6)上设有喷嘴(61);The rectangular powder feeding head (6) is provided with a nozzle (61); 所述第一子光束(13)和第二子光束(14)相交,且相交位置处于喷嘴(61)的出粉方向上。The first sub-beam (13) and the second sub-beam (14) intersect, and the intersecting position is in the powder output direction of the nozzle (61). 9.根据权利要求8所述光内同轴送粉的矩形光斑熔覆装置,其特征在于:所述分光单元为直角棱镜反射镜(3)或者分光棱镜(8)。9 . The rectangular light spot cladding device for coaxial powder feeding in light according to claim 8 , wherein the light splitting unit is a right angle prism reflecting mirror ( 3 ) or a light splitting prism ( 8 ). 10 . 10.根据权利要求8所述光内同轴送粉的矩形光斑熔覆装置,其特征在于:所述分光单元包括一个半透半反镜(9)和一个平面反射镜(10);10. The rectangular light spot cladding device for coaxial powder feeding in light according to claim 8, wherein the light splitting unit comprises a half mirror (9) and a plane mirror (10); 所述半透半反镜(9)位于准直镜组(2)的出射光路中,准直镜组(2)输出的圆形光束(12)经半透半反镜(9)后,反射光入射至第一积分镜(4),透射光入射至所述平面反射镜(10),并经平面反射镜(10)反射后入射至第二积分镜(5)。The half mirror (9) is located in the outgoing light path of the collimating mirror group (2), and the circular light beam (12) output by the collimating mirror group (2) passes through the half mirror (9), The reflected light is incident on the first integrator (4), the transmitted light is incident on the plane mirror (10), and is reflected by the plane mirror (10) and then incident on the second integrator (5).
CN201911233535.2A 2019-12-05 2019-12-05 Rectangular light spot cladding device with coaxial powder feeding in light Pending CN110938817A (en)

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