CN209532091U - A kind of increasing material manufacturing equipment of three laser assisteds preheating slow cooling - Google Patents
A kind of increasing material manufacturing equipment of three laser assisteds preheating slow cooling Download PDFInfo
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- CN209532091U CN209532091U CN201821954082.3U CN201821954082U CN209532091U CN 209532091 U CN209532091 U CN 209532091U CN 201821954082 U CN201821954082 U CN 201821954082U CN 209532091 U CN209532091 U CN 209532091U
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- laser
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- 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
Abstract
The utility model discloses a kind of increasing material manufacturing equipment of three laser assisteds preheating slow cooling, include first to third laser generation module, processing plane is processed simultaneously using first to be parallel to each other to third laser, wherein, second laser is less than the diameter that first laser, third laser form hot spot in processing plane in the diameter that processing plane forms hot spot；First laser, second laser, third laser are the hot spot that processing plane is formed is arranged successively along machine direction, the center of circle is on same straight line, and the edge of adjacent spots is tangent；The temperature that first laser, third laser form hot spot is less than powder sintered fusion temperature, and the temperature that second laser forms hot spot is greater than powder sintered fusion temperature；First to the laser-formed hot spot of third be respectively used to preheating, sintering melt and slow cooling.The utility model can reduce temperature gradient in forming process, and then reduce the stress of inside parts, help to improve the processing quality of part.
Description
Technical field
The utility model relates to increases material manufacturing technology fields, more particularly to a kind of increasing material system of three laser assisteds preheating slow cooling
Manufacturing apparatus.
Background technique
Increases material manufacturing technology is that a kind of three-dimensional digital model by material according to required converted products is successively manufactured
Process.The main distinction of itself and traditional technology is, the threedimensional model of part is carried out digitized processing, is allowed to resolve into layer
If for the stacked state of the minimum thin slice of the dry thickness of unit；Associated mechanisms are recycled later, by material according to every layer of shape
It is stacked, finally obtains target part.Raw material one of of the powder as increases material manufacturing technology, due to target part character
Identical, required aftertreatment technology is few, is widely applied.When carrying out increasing material manufacturing using powder, equipment is equal in processing plane
One layer of powder of even laying, is later sintered powder by laser, and hot spot can be such that powder melts rapidly after acting on powder,
And be combined together with the part under powder, after laser facula is removed, a part that the powder of thawing is quickly cooled to as part.
Such process moves in circles, and finally obtains the part of needs.
In increasing material manufacturing method before, a laser source is often only used as energy input devices；Manufacturing process
Middle hot spot acts directly on powder, since powder is not preheated, in hot spot and produces great temperature gradient outside hot spot,
So that by the molding inside parts of increasing material manufacturing method there are biggish residual stress and holes the defects of.
Utility model content
Technical problem to be solved in the utility model is to provide one kind three for defect involved in background technique
The increasing material manufacturing equipment of laser assisted preheating slow cooling.
The utility model uses following technical scheme to solve above-mentioned technical problem:
A kind of increasing material manufacturing equipment of three laser assisteds preheating slow cooling, it is described comprising first to third laser generation module
First is respectively used to generate first to third laser to third laser generation module；
Described first to third laser generation module include laser, beam-expanding collimation mirror, dynamic focus device and galvanometer；
Laser successively forms light in processing plane after beam-expanding collimation mirror, dynamic focus device, galvanometer for generating laser, laser
Spot；
The second laser is less than first laser, third laser in processing plane in the diameter that processing plane forms hot spot
Form the diameter of hot spot；First laser, second laser, third laser are successively arranged in the hot spot that processing plane is formed along machine direction
Column, the center of circle are on same straight line, and the edge of adjacent spots is tangent；
The temperature that the first laser, third laser form hot spot is less than powder sintered fusion temperature, and second laser is formed
The temperature of hot spot is greater than powder sintered fusion temperature；
The hot spot that the first laser is formed is preheated for treating molding powder；
The hot spot that the second laser is formed is used to be sintered thawing to the powder after preheated；
Powder after the laser-formed hot spot of third is used to melt sintering carries out slow cooling.
As the of the invention a kind of further prioritization scheme of increasing material manufacturing equipment of three laser assisteds preheating slow cooling, described the
One laser is 1000 μm in the diameter that processing plane forms hot spot, and the second laser is in the diameter that processing plane forms hot spot
100 μm, the third laser is 1200 μm in the diameter that processing plane forms hot spot.
The utility model compared with the prior art by using the above technical solution, has following technical effect that
During traditional increasing material manufacturing, extreme temperatures at laser-formed molten bath, the powder in molten bath and surrounding room temperature
Between form very big temperature gradient, cause the stress inside part to be processed very big, easily lead to the deformation of part, together
When the defects of also will form stomata, crackle.The utility model preheats powder using light beam, another light beam to powder into
Row processing, three beams of laser carry out slow cooling to molded part, can reduce temperature gradient, and then reduce answering for inside parts
Power facilitates the stomata and crackle that reduce inside parts, improves the processing quality of part.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model increasing material manufacturing equipment；
Fig. 2 is the first schematic diagram for forming hot spot in processing plane to third laser in the utility model.
In figure, the hot spot that 1- first laser is formed in processing plane, the hot spot that 2- second laser is formed in processing plane, 3-
Laser of the third laser in the hot spot for processing plane formation, 101- first laser generation module, 102- first laser generate
Beam-expanding collimation mirror in module, the dynamic focus device in 103- first laser generation module, 104- first laser generation module
In galvanometer, the laser in 201- second laser generation module, the beam-expanding collimation mirror in 202- second laser generation module,
Dynamic focus device in 203- second laser generation module, the galvanometer in 204- second laser generation module, 301- third swash
Laser in light generation module, the beam-expanding collimation mirror in 302- third laser generation module, 303- third laser generation module
In dynamic focus device, the galvanometer in 304- third laser generation module, 4- processes plane.
Specific embodiment
The technical solution of the utility model is described in further detail with reference to the accompanying drawing:
The utility model can be embodied in many different forms, and should not be assumed that be limited to the embodiments described herein.
On the contrary, it is thorough and complete to these embodiments are provided so that the disclosure, and this reality will be given full expression to those skilled in the art
With novel range.In the accompanying drawings, for the sake of clarity it is exaggerated component.
The utility model discloses a kind of increasing material manufacturing equipment of three laser assisteds preheating slow cooling, swash comprising first to third
Light generation module, described first to third laser generation module is respectively used to generate first to third laser；
Described first to third laser generation module include laser, beam-expanding collimation mirror, dynamic focus device and galvanometer；
Laser successively forms light in processing plane after beam-expanding collimation mirror, dynamic focus device, galvanometer for generating laser, laser
Spot；
The second laser is less than first laser, third laser in processing plane in the diameter that processing plane forms hot spot
Form the diameter of hot spot；First laser, second laser, third laser are successively arranged in the hot spot that processing plane is formed along machine direction
Column, the center of circle are on same straight line, and the edge of adjacent spots is tangent；
The temperature that the first laser, third laser form hot spot is less than powder sintered fusion temperature, and second laser is formed
The temperature of hot spot is greater than powder sintered fusion temperature；
The hot spot that the first laser is formed is preheated for treating molding powder；
The hot spot that the second laser is formed is used to be sintered thawing to the powder after preheated；
Powder after the laser-formed hot spot of third is used to melt sintering carries out slow cooling.
As shown in Figure 1, the dual-beam increasing material manufacturing method of the utility model, while processing is directly acted on using three-beam
Plane.First wavelength is the laser of A after beam-expanding collimation mirror, into dynamic focusing system, forms converged light, then through the
One galvanometer system reflection, forms micro- large spot in processing plane, will process the powder at plane and preheats.Beam-expanding collimation mirror,
Dynamic focusing system is suitable for the laser wavelength that wavelength is A.At the same time, the laser that second wavelength is B is by expanding
After collimating mirror, into dynamic focusing system, converged light is formed, then reflect through second galvanometer system, formed in processing plane
Compared with small light spot, sintering can be melted to the powder at processing plane.It is B that beam-expanding collimation mirror, dynamic focusing system, which are suitable for wavelength,
Laser wavelength.Third platform wavelength is the laser of C after beam-expanding collimation mirror, into dynamic focusing system, forms converged light,
It is reflected again through First galvanometer system, forms micro- large spot in processing plane, the molded part at plane will be processed and carried out
Slow cooling.Beam-expanding collimation mirror, dynamic focusing system are suitable for the laser wavelength that wavelength is C.
As shown in Fig. 2, the hot spot that the laser that wavelength is A is formed in processing plane, much larger than the laser that wavelength is B
The hot spot formed in processing plane.The hot spot that the laser that wavelength is C is formed in processing plane is B's much larger than wavelength
The hot spot that laser is formed in processing plane.Processing plane can be melted shape by the relatively small light spot that the laser that wavelength is B is formed
At molten bath, and then by metal powder sintered formation metal solid.Extreme temperatures at molten bath, typically larger than 0 DEG C, with surrounding powder
And part forms big temperature gradient.When galvanometer drives laser to move on processing plane, wavelength is that the laser of A can
Continuous heating is carried out for the powder before the second beam laser facula, the laser that wavelength is C can be the powder after the second beam laser facula
End carries out continuous heating, can reduce the temperature gradient around molten bath, reduces stress and crackle stomata etc. that inside parts generate
Defect.
The utility model embodiment:
The beneficial effects of the utility model are illustrated with an example below.
The diverging light that the optical fiber laser that First power is 500W, central wavelength is 1070nm issues, by expanding standard
After straight mirror, into dynamic focusing system, converged light 1 is formed；The optical fiber that second power is 500W, central wavelength is 1067nm swashs
The light that light device issues, into dynamic focusing system, forms converged light 2 after beam-expanding collimation mirror.Third platform power be 500W,
The light that the optical fiber laser that central wavelength is 1067nm issues, into dynamic focusing system, is formed and is converged after beam-expanding collimation mirror
Optically focused 3.Beat mirror in three galvanometers is in simultaneously high reflectance to three beams of laser, and three beams converged light is reflected through galvanometer system again,
It is incident upon in processing plane.Converged light 1 forms about 1000 μm of diameter of hot spot in processing plane, and energy density is lower, can incite somebody to action
Process the powder heating in plane.Converged light 2 forms about 100 μm of diameter of hot spot in processing plane, and energy density is high, can
The fusing of the powder in plane will be processed.Converged light 3 reprocess plane on formed diameter be about 1200 μm hot spot, energy density compared with
It is low, slow cooling can be carried out to formed part in processing plane, to reduce the stress of inside parts, reduce inside parts stomata and
Crackle.
Those skilled in the art can understand that unless otherwise defined, all terms used herein (including skill
Art term and scientific term) there is meaning identical with the general understanding of those of ordinary skill in the utility model fields
Justice.It should also be understood that those terms such as defined in the general dictionary should be understood that with upper with the prior art
The consistent meaning of meaning hereinafter, and unless defined as here, will not with idealization or meaning too formal come
It explains.
Above-described specific embodiment, to the purpose of this utility model, technical scheme and beneficial effects carried out into
One step is described in detail, it should be understood that being not used to limit the foregoing is merely specific embodiment of the present utility model
The utility model processed, within the spirit and principle of the utility model, any modification, equivalent substitution, improvement and etc. done,
It should be included within the scope of protection of this utility model.
Claims (2)
1. a kind of increasing material manufacturing equipment of three laser assisteds preheating slow cooling, which is characterized in that generated comprising first to third laser
Module, described first to third laser generation module is respectively used to generate first to third laser；
Described first to third laser generation module include laser, beam-expanding collimation mirror, dynamic focus device and galvanometer；Laser
Device successively forms hot spot in processing plane after beam-expanding collimation mirror, dynamic focus device, galvanometer for generating laser, laser；
The second laser is less than first laser, third laser in the diameter that processing plane forms hot spot and is formed in processing plane
The diameter of hot spot；First laser, second laser, third laser processing plane formed hot spot be arranged successively along machine direction,
The center of circle is on same straight line, and the edge of adjacent spots is tangent；
The temperature that the first laser, third laser form hot spot is less than powder sintered fusion temperature, and second laser forms hot spot
Temperature be greater than powder sintered fusion temperature；
The hot spot that the first laser is formed is preheated for treating molding powder；
The hot spot that the second laser is formed is used to be sintered thawing to the powder after preheated；
Powder after the laser-formed hot spot of third is used to melt sintering carries out slow cooling.
2. the increasing material manufacturing equipment of three laser assisteds preheating slow cooling according to claim 1, which is characterized in that described first
Laser is 1000 μm in the diameter that processing plane forms hot spot, and the second laser is in the diameter that processing plane forms hot spot
100 μm, the third laser is 1200 μm in the diameter that processing plane forms hot spot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821954082.3U CN209532091U (en) | 2018-11-26 | 2018-11-26 | A kind of increasing material manufacturing equipment of three laser assisteds preheating slow cooling |
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| CN201821954082.3U CN209532091U (en) | 2018-11-26 | 2018-11-26 | A kind of increasing material manufacturing equipment of three laser assisteds preheating slow cooling |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110640139A (en) * | 2019-11-08 | 2020-01-03 | 黑龙江科技大学 | Processing method for eliminating stress of powder-spreading type 3D printing workpiece with assistance of laser |
-
2018
- 2018-11-26 CN CN201821954082.3U patent/CN209532091U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110640139A (en) * | 2019-11-08 | 2020-01-03 | 黑龙江科技大学 | Processing method for eliminating stress of powder-spreading type 3D printing workpiece with assistance of laser |
| CN110640139B (en) * | 2019-11-08 | 2022-02-08 | 黑龙江科技大学 | Processing method for eliminating stress of powder-spreading type 3D printing workpiece with assistance of laser |
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