CN107199340B - Metal powder forming device head - Google Patents
Metal powder forming device head Download PDFInfo
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- CN107199340B CN107199340B CN201710652885.7A CN201710652885A CN107199340B CN 107199340 B CN107199340 B CN 107199340B CN 201710652885 A CN201710652885 A CN 201710652885A CN 107199340 B CN107199340 B CN 107199340B
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- 239000000843 powder Substances 0.000 title claims abstract description 133
- 239000002184 metal Substances 0.000 title claims abstract description 24
- 230000007246 mechanism Effects 0.000 claims abstract description 51
- 230000002093 peripheral effect Effects 0.000 claims abstract description 4
- 239000000498 cooling water Substances 0.000 claims description 16
- 230000001681 protective effect Effects 0.000 claims description 13
- 238000000605 extraction Methods 0.000 claims 1
- 238000000034 method Methods 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000000956 alloy Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
- B22F12/22—Driving means
- B22F12/222—Driving means for motion along a direction orthogonal to the plane of a layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/20—Direct sintering or melting
- B22F10/25—Direct deposition of metal particles, e.g. direct metal deposition [DMD] or laser engineered net shaping [LENS]
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
- B22F12/20—Cooling means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
- B22F12/40—Radiation means
- B22F12/44—Radiation means characterised by the configuration of the radiation means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
- B22F12/50—Means for feeding of material, e.g. heads
- B22F12/53—Nozzles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
- B22F12/50—Means for feeding of material, e.g. heads
- B22F12/55—Two or more means for feeding material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/003—Apparatus, e.g. furnaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Laser Beam Processing (AREA)
Abstract
The invention discloses a metal powder forming device head, which comprises a light emitting mechanism, a powder feeding mechanism and an angle adjusting mechanism for connecting the light emitting mechanism and the powder feeding mechanism, wherein the light emitting mechanism comprises a light emitting cylinder body and an outer sleeve arranged on the outer peripheral wall of the light emitting cylinder body, and the light emitting cylinder body is fixedly connected with a laser spindle; the powder feeding mechanism comprises a plurality of powder pipes distributed on the circumference of the light-emitting cylinder body, and the powder convergence points of the plurality of powder pipes are just overlapped with the axis of the laser spindle; the angle adjusting mechanism comprises a connecting rod and a rotating angle block, the two ends of the connecting rod are respectively connected with the outer sleeve and the powder tube in a fastening way through the rotating angle block and a bolt, the angle of the connecting rod and the powder tube is adjusted through the fastening position of the adjusting bolt on the rotating angle block, and then the density of powder convergence points of a plurality of powder tubes is adjusted. The invention realizes the adjustment of the density of the powder convergence point through the angle adjusting mechanism, and also realizes the up-and-down movement of the intersection point of the powder manifold convergence point and the laser beam through the up-and-down movement of the outer sleeve relative to the light-emitting cylinder.
Description
Technical Field
The invention relates to the technical field of metal powder laser processing, in particular to a metal powder forming device head.
Background
The coaxial laser forming technology adopts a powder feeding system to directly feed alloy material powder into a laser action area through powder loading airflow in the laser forming process, so that the alloy material powder and a matrix material are melted simultaneously, cooled and solidified to form metallurgical bonding. The synchronous powder feeding forming method is beneficial to reducing the thickness of a forming layer, realizes the controllability of materials, tissues, part shapes and the like, and is the most widely applied laser additive manufacturing technology at present.
The powder feeding head adopted in the coaxial laser forming technology has the structure that the axis of the powder flow is intersected with the laser axis, and the powder flow has better symmetry relative to the laser beam, so that the quality of the processing process is ensured, and the forming under the complex scanning track can be realized.
When the laser is formed coaxially, the relative positions of the powder convergence point and the laser focus and the density distribution of the powder convergence point are required to be adjusted according to different matrixes, powder materials and process parameters. The existing coaxial powder feeding head is often connected with a laser head comprising a laser focusing lens through a threaded connecting piece, and the distance between the laser head and the lens is adjusted through rotating the powder feeding head, so that the position relation between a powder converging point and a laser focus is changed. However, in actual work, various pipelines such as powder, gas, water and the like are often distributed on the coaxial powder feeding head, and when the coaxial powder feeding head rotates, all pipelines need to be disassembled and reinstalled after the adjustment is completed, so that the coaxial powder feeding head is complex in operation. Secondly, because the powder feeding channel of the traditional coaxial powder feeding head is fixed, when the powder carrying air flow and the powder feeding amount are fixed, the concentration distribution of the powder is determined, and the adjustment cannot be performed. Further, the conventional shade mechanism has a limited fixing or adjusting range, which limits industrial application.
It is apparent that the conventional coaxial laser forming technology still has inconvenience and defects in structure, method and use, and further improvement is needed. How to create a new metal powder forming device head capable of changing the density distribution of a laser convergence point and a powder convergence point is one of the important research and development problems at present.
Disclosure of Invention
The invention aims to provide a metal powder forming device head which can change the density distribution of a laser convergence point and a powder convergence point, thereby overcoming the defects of the existing coaxial laser forming technology.
In order to solve the technical problems, the invention provides a metal powder forming device head, which comprises a light emitting mechanism, a powder feeding mechanism and an angle adjusting mechanism for connecting the light emitting mechanism and the powder feeding mechanism,
the light emitting mechanism comprises a light emitting cylinder body and an outer sleeve arranged on the outer peripheral wall of the light emitting cylinder body, and the light emitting cylinder body is used for being fixedly connected with the laser spindle;
the powder feeding mechanism comprises a plurality of powder pipes distributed on the circumference of the light-emitting cylinder body, and the powder convergence points of the plurality of powder pipes are just overlapped with the axis of the laser spindle;
the angle adjusting mechanism comprises a connecting rod and a rotating angle block, two ends of the connecting rod are respectively connected with the outer sleeve and the powder tube in a fastening mode through the rotating angle block and a bolt, the angle of the connecting rod and the powder tube is adjusted by adjusting the fastening position of the bolt on the rotating angle block, and then the density of powder convergence points of the powder tubes is adjusted.
As an improvement of the invention, the rotating angle block is provided with an adjusting groove, and the angle adjustment of the connecting rod and the powder tube is realized by adjusting the fastening position of the bolt in the adjusting groove.
Further improved, the powder feeding mechanism comprises 6 powder pipes which are uniformly and symmetrically distributed on the circumference of the light emitting cylinder.
Further improved, the outer sleeve is rotatably arranged on the periphery of the light emergent cylinder body.
Further improved, the outer sleeve and the light-emitting cylinder are rotationally connected through threads.
Further improved, the metal powder forming device head also comprises a shading mechanism, wherein the shading mechanism comprises a first shading layer and a second shading layer which are distributed up and down and can rotate relatively;
the first shading layers comprise shading sheets with the same number as the powder tubes and rotating rings arranged at the lower part of the periphery of the light emitting cylinder in a sliding manner, the shading sheets are of fan-shaped structures, fan-shaped short sides of the fan-shaped structures are fixedly connected to the rotating rings, and one shading sheet is arranged between every two adjacent powder tubes;
the second shading layer has the same structure as the first shading layer, the shading sheets in the second shading layer are mutually overlapped and matched with the shading sheets in the first shading layer, and the shading area is adjusted by sliding rotation of the rotating ring in the second shading layer and the rotating ring in the first shading layer and the outer wall of the light-emitting cylinder body.
Further improved, the metal powder forming device head further comprises a protective lens, and the protective lens is mounted on the inner wall of the light emitting cylinder body through a protective lens mounting bracket.
Further improved, the metal powder forming device head further comprises a first cooling water channel arranged at the periphery of the light emergent cylinder body.
Further improved, the metal powder forming device head further comprises a second cooling water path arranged on the periphery of the powder tube.
Further improved, the top end of the light-emitting cylinder is fixedly connected with the laser spindle through a flange, and a focusing lens is arranged on the inner wall of the laser spindle.
With such a design, the invention has at least the following advantages:
1. the invention has the advantages that the outer sleeve is connected with the light-emitting cylinder through threads, so that the light-emitting cylinder is not influenced by various components such as powder, gas, water and the like when the outer sleeve rotates up and down, the outer sleeve rotates downwards or upwards relative to the light-emitting cylinder under the condition that various components are not disassembled, the powder pipe moves downwards or upwards, the intersection point of the powder pipe powder path and the laser beam moves downwards or upwards, and meanwhile, the included angle between the powder pipe and the light-emitting cylinder is adjusted through the connecting rod adjusting mechanism, so that the purpose of changing the density distribution of a laser convergence point and the powder convergence point is achieved.
2. According to the invention, the size of the total shading area can be arbitrarily adjusted according to actual conditions by arranging the adjustable shading mechanism, so that the purpose of shading reflected laser is achieved, further, the components on the shading mechanism are prevented from being damaged by heating, and the service life is prolonged.
3. According to the invention, the protective lens and the cooling water channel are arranged on the inner wall of the light-emitting cylinder, so that the laser head is prevented from being damaged by flying powder heated by laser, the lower end of the light-emitting cylinder is prevented from being damaged by heating, the protective lens is prevented from being burst by heating, and the safety and reliability of the device are improved.
Drawings
The foregoing is merely an overview of the present invention, and the present invention is further described in detail below with reference to the accompanying drawings and detailed description.
FIG. 1 is a schematic cross-sectional view of a metal powder forming apparatus head according to the present invention.
Fig. 2 is a bottom view of the metal powder forming apparatus head of the present invention.
Fig. 3 is a schematic view illustrating a change of a shading angle of the shading layer in fig. 2.
Fig. 4 is a schematic structural view showing a variation of the angle adjusting structure in fig. 1.
Fig. 5 is a schematic view of the outer sleeve of fig. 4 when moved downward.
Detailed Description
Referring to fig. 1 to 3, the metal powder forming apparatus head of the present invention includes a light emitting mechanism, a powder feeding mechanism, an angle adjusting mechanism connecting the light emitting mechanism and the powder feeding mechanism, and a light shielding mechanism.
The light-emitting mechanism includes a light-emitting cylinder 3 and an outer sleeve 13 provided on the outer peripheral wall thereof. The top end of the light-emitting cylinder body 3 is fixedly connected with the laser spindle through a flange, and the central axis of the light-emitting cylinder body 3 coincides with the axis of the laser spindle. The laser spindle comprises a focusing lens 17 and a lens mount 18, the focusing lens 17 being used for focusing the passing laser beam.
The powder feeding mechanism comprises a plurality of powder pipes distributed on the circumference of the light-emitting cylinder body 3, and the axial intersecting points of the powder pipes, namely powder converging points, are exactly coincided with the laser axis. In the embodiment, 6 powder tubes 5 uniformly and symmetrically distributed in the circumferential direction of the light-emitting cylinder are adopted, and the powder tubes 5 enter powder from a powder-carrying air flow inlet 16 and discharge the powder from a tip outlet. Of course, the number of the powder pipes can be a positive integer more than or equal to 6 according to the needs.
The angle adjusting mechanism comprises a rotating angle block 20 and a connecting rod 10, and two ends of the connecting rod 10 are respectively and tightly connected with the outer sleeve 13 and the powder tube 5 through the rotating angle block 20 and bolts. The rotation angle block 20 is provided with an adjusting groove, preferably an arc-shaped adjusting groove. The angle 21 between the connecting rod 10 and the powder tube 5 can be adjusted by adjusting the fastening position of the bolt in the adjusting groove, so that the density of the powder convergence points of a plurality of powder tubes can be adjusted, for example, when the angle of the angle 21 is increased, the distance from the outlet of the powder tube 5 to the laser convergence point 1 is increased, and the density of the powder convergence points is reduced; when the angle of the included angle 21 is reduced, the distance from the outlet of the powder tube 5 to the laser convergence point 1 is reduced, resulting in an increase in the density of the powder convergence point.
In this embodiment, the outer sleeve 13 is rotatably disposed on the outer periphery of the light emitting barrel 3, for example, the outer sleeve 13 is rotatably connected by a screw thread manner, so that the powder tube 5 forms a linkage mechanism with the outer sleeve 13 through the connecting rod 10 and the rotating angle block 20, the connecting rod 10 and the powder tube 5 simultaneously move downwards when the outer sleeve 13 moves downwards, and the rotating angle block 20, the connecting rod 10 and the powder tube 5 simultaneously move upwards when the outer sleeve 13 moves upwards, as shown in fig. 4 and 5. Of course, the outer sleeve 13 may be connected to the outer periphery of the light-emitting cylinder 3 in other manners, such as sliding connection by means of a guide rail.
The shading mechanism in this embodiment includes two layers of first shading layer and second shading layer which are distributed up and down and can rotate relatively.
The first shading layer comprises shading sheets 7 with the same number as the powder tubes and a rotating ring 4 which is arranged at the lower part of the periphery of the light emergent cylinder body 3 in a sliding manner. Each light shielding sheet 7 is of a fan-shaped structure and is respectively arranged between every two adjacent powder pipes, and the fan-shaped short sides of the fan-shaped structures are fixed on the rotating ring 4 in a threaded connection mode, so that the light shielding sheets 7 can freely rotate left and right by taking the axis of the light emitting cylinder 3 as the rotation axis through the rotation of the rotating ring 4. The second shading layer is arranged above the first shading layer, has the same specific structure as the first shading layer, and comprises shading sheets 8 with the same number as the powder tubes and a rotating ring 6 fixedly arranged at the lower part of the periphery of the light-emitting cylinder 3. The shading sheet 7 and the shading sheet 8 are mutually in lap joint fit, and the shading area can be adjusted through sliding rotation of the rotating ring 4, the rotating ring 6 and the outer wall of the light emitting cylinder 3. As shown in fig. 2, when the rotary ring 6 rotates left and counterclockwise with the light-emitting cylinder axis 2 as a reference when the rotary ring 4 is stationary, the total area of the irregular fan-shaped shading area shown in fig. 3 becomes larger, and conversely becomes smaller, so that the shading mechanism can randomly adjust the shading total area according to the actual situation. The shading mechanism can shade reflected laser so as to prevent components on the shading mechanism from being damaged by heating.
The metal powder forming device head of the present invention further comprises a protective lens 12, and the protective lens 12 is mounted on the inner wall of the light-emitting cylinder 3 through a protective lens mounting bracket 19. The protective lens 12 is used to prevent the laser heated powder from flying up and damaging the laser head.
To further protect the metal powder forming apparatus head, the apparatus head further includes a first cooling water path and a second cooling water path.
The first cooling water channel is arranged at the periphery of the light-emitting cylinder body 3, such as a cooling water inlet 9 and a cooling water outlet 11 of the first cooling water channel in fig. 1, and the temperature around the lower end of the light-emitting cylinder body 3 and the protective lens 12 can be reduced by the first cooling water channel, so that the lower end of the light-emitting cylinder body 3 is prevented from being damaged by heat and the protective lens 12 is prevented from being burst by heat.
The second cooling water path is provided at the outer circumference of the powder tube 5, as shown in fig. 1, by which the powder tube 5 is prevented from being damaged by heat, as cooling water inlet 14 and cooling water outlet 15 of the second cooling water path.
The outer sleeve 13 is connected with the light-emitting cylinder 3 through threads, is not influenced by various components such as powder, gas, water and the like when rotating up and down, and can rotate downwards or upwards relative to the light-emitting cylinder 3 through the outer sleeve 13 under the condition that the various components are not disassembled, so that the powder pipe moves downwards or upwards, the intersection point of the powder pipe and the laser beam moves downwards or upwards, and meanwhile, the included angle between the powder pipe 5 and the connecting rod 10 is adjusted through the angle adjusting mechanism, so that the purpose of changing the density distribution of a laser converging point and a powder converging point is achieved.
The light shielding layers are arranged on the light emitting barrel, and the two light shielding layers rotate in the same direction or in opposite directions along the axis of the light emitting barrel to reduce or increase the total light shielding area, so that the light shielding mechanism with the adjustable total light shielding area is formed. Of course, more light shielding layers can be arranged according to actual needs.
The above description is only of the preferred embodiments of the present invention, and is not intended to limit the invention in any way, and some simple modifications, equivalent variations or modifications can be made by those skilled in the art using the teachings disclosed herein, which fall within the scope of the present invention.
Claims (6)
1. A metal powder forming device head is characterized by comprising a light emitting mechanism, a powder feeding mechanism and an angle adjusting mechanism connected with the light emitting mechanism and the powder feeding mechanism,
the light emitting mechanism comprises a light emitting cylinder body and an outer sleeve arranged on the outer peripheral wall of the light emitting cylinder body, and the light emitting cylinder body is used for being fixedly connected with the laser spindle; the outer sleeve is rotatably arranged on the periphery of the light emergent cylinder body in a threaded mode;
the powder feeding mechanism comprises a plurality of powder pipes distributed on the circumference of the light-emitting cylinder body, and the powder convergence points of the plurality of powder pipes are just overlapped with the axis of the laser spindle;
the angle adjusting mechanism comprises a connecting rod and a rotating angle block, two ends of the connecting rod are respectively connected with the outer sleeve and the powder tube in a fastening way through the rotating angle block and a bolt, and the angle of the connecting rod and the powder tube is adjusted by adjusting the fastening position of the bolt on the rotating angle block, so that the density of powder convergence points of the powder tubes is adjusted;
the adjusting groove is formed in the rotating angle block, and the angle between the connecting rod and the powder tube is adjusted by adjusting the fastening position of the bolt in the adjusting groove;
the metal powder forming device head also comprises a shading mechanism, wherein the shading mechanism comprises a first shading layer and a second shading layer which are distributed up and down and can rotate relatively;
the first shading layers comprise shading sheets with the same number as the powder tubes and rotating rings arranged at the lower part of the periphery of the light emitting cylinder in a sliding manner, the shading sheets are of fan-shaped structures, fan-shaped short sides of the fan-shaped structures are fixedly connected to the rotating rings, and one shading sheet is arranged between every two adjacent powder tubes;
the second shading layer has the same structure as the first shading layer, the shading sheets in the second shading layer are mutually overlapped and matched with the shading sheets in the first shading layer, and the shading area is adjusted by sliding rotation of the rotating ring in the second shading layer and the rotating ring in the first shading layer and the outer wall of the light-emitting cylinder body.
2. The metal powder forming apparatus head according to claim 1, wherein the powder feeding mechanism comprises 6 powder tubes uniformly and symmetrically distributed in the circumferential direction of the light-emitting cylinder.
3. The metal powder forming apparatus head of claim 1, further comprising a protective lens mounted on an inner wall of the light extraction cylinder by a protective lens mounting bracket.
4. The metal powder forming apparatus head according to claim 1, further comprising a first cooling water path provided at an outer periphery of the light emitting cylinder.
5. The metal powder forming apparatus head as recited in claim 4, further comprising a second cooling water path provided at an outer periphery of the powder tube.
6. The metal powder forming head according to claim 1, wherein the top end of the light-emitting cylinder is fixedly connected with the laser spindle through a flange, and a focusing lens is arranged on the inner wall of the laser spindle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710652885.7A CN107199340B (en) | 2017-08-02 | 2017-08-02 | Metal powder forming device head |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710652885.7A CN107199340B (en) | 2017-08-02 | 2017-08-02 | Metal powder forming device head |
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| CN107199340A CN107199340A (en) | 2017-09-26 |
| CN107199340B true CN107199340B (en) | 2023-06-06 |
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| CN201710652885.7A Active CN107199340B (en) | 2017-08-02 | 2017-08-02 | Metal powder forming device head |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107838422A (en) * | 2017-10-17 | 2018-03-27 | 安徽工程大学 | A kind of method and device that alloy components are obtained using laser 3D printing |
| CN109604594B (en) * | 2018-12-11 | 2021-05-18 | 西安航天发动机有限公司 | Coaxial powder feeding head device for laser repair of shell castings |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4724299A (en) * | 1987-04-15 | 1988-02-09 | Quantum Laser Corporation | Laser spray nozzle and method |
| CN101264519B (en) * | 2008-04-08 | 2010-06-16 | 西安交通大学 | Adjustable laser coaxial powder feeding nozzle |
| CN201190183Y (en) * | 2008-05-23 | 2009-02-04 | 北京工业大学 | Coaxial powder-feeding system for laser fusion and coating |
| JP2010207877A (en) * | 2009-03-11 | 2010-09-24 | Panasonic Corp | Welding apparatus and soldering apparatus |
| CN104178763B (en) * | 2013-05-24 | 2016-08-31 | 中国科学院力学研究所 | A kind of laser coaxial cladding feeding head |
| CN106637195B (en) * | 2016-12-15 | 2018-09-14 | 中国矿业大学 | Hot spot and the coaxial powder-feeding nozzle of powder feeding position can be automatically adjusted |
| CN106835125B (en) * | 2017-03-10 | 2019-06-14 | 浙江工业大学 | Connecting rod lever type structure powder convergent point adjustable laser coaxial powder feeding nozzle |
| CN106801226B (en) * | 2017-03-10 | 2019-06-14 | 浙江工业大学 | Hinge slider type laser coaxial powder feeding nozzle with adjustable powder focus |
| CN207026482U (en) * | 2017-08-02 | 2018-02-23 | 鑫精合激光科技发展（北京）有限公司 | A kind of shaping of metal powders device head |
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