CN206200123U - A kind of selective laser melting shapes molten bath real-time monitoring device - Google Patents
A kind of selective laser melting shapes molten bath real-time monitoring device Download PDFInfo
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- CN206200123U CN206200123U CN201621091294.4U CN201621091294U CN206200123U CN 206200123 U CN206200123 U CN 206200123U CN 201621091294 U CN201621091294 U CN 201621091294U CN 206200123 U CN206200123 U CN 206200123U
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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
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Abstract
The utility model is related to a kind of selective laser melting shaping molten bath real-time monitoring device,Belong to 3D printing increases material manufacturing technology field,Being capable of bath temperature in real-time monitoring SLM forming processes there is provided one kind,Shape and area,And online evaluation can be carried out to forming accuracy and laser power,And the selective laser melting shaping molten bath real-time monitoring device for feeding back,The technical scheme for using shapes laser system and pulse laser to be provided with fusing at the top of forming cavity,The center of top of forming cavity is provided with clear glass,Clear glass top is provided with laser lens barrel,Pulse laser is connected by optical fiber with laser lens barrel,Crane is provided with forming cavity,The both sides of crane are provided with elevating mechanism,Video camera is provided with the bottom multiple angle of crane,Fusing shaping laser system,Pulse laser,Elevating mechanism and video camera are connected with master control system；The utility model is widely used in the real-time monitoring that selective laser melting shapes molten bath.
Description
Technical field
The utility model is related to a kind of selective laser melting shaping molten bath real-time monitoring device, belongs to 3D printing and increases material system
Make technical field.
Background technology
3D printing technique, is based on mathematical model, material successively to be piled up and produces reality also known as increases material manufacturing technology
The emerging manufacturing technology of body article, the technology is by information network technique and advanced material technology, the close knot of numerical DC speed technology
Close, be the important component of advanced manufacturing industry.3D printing be not required to cut material, be also not required to mould, can batch micro operations, can also be remote
Journey is manipulated, and is particularly suited for the very small product of complex structure, volume, and manufacturing speed is fast, with short production cycle, reduces development cost
And risk, bring the change of manufacturing process and production model.Metallic article 3D printing technique（SLM technologies）Beaten as whole 3D
Forefront and most potential technology in print system, are the important development directions of advanced manufacturing technology.
The general principle of SLM technologies is:First on computers using the design of the 3D sculpting softwares such as pro/e, UG, CATIA
Go out the three-dimensional entity model of part, slicing delamination is then carried out to the threedimensional model by Slice Software, obtain the wheel in each section
Wide data, by outline data generation filling scanning pattern, equipment will control laser beam selective melting according to these filling scan lines
The metal powder material of each layer, is progressively stacked into 3-dimensional metal part.Before laser beam starts scanning, powdering system is by metal dust
Lay on metallic substrates.Laser beam carries out fusing shaping according to manufactured part current interface outline data selectivity.Then
Substrate declines certain altitude, and powdering system spreads one layer of powder again, and laser carries out selectivity according to the next layer cross section information of model
Fusing, and so on circulation is until whole product completes fusing shaping.
In SLM forming processes, metal bath has the physics such as strong heat transfer, radiation, solidification, convection current, phase transformation
Chemical change, is the key area of laser and metal dust interaction.Metallurgy, crystallization in molten bath state and forming technology,
The processes such as phase transformation have close contact, and stability of the molten bath state in technical process directly influences the size of molded article
Precision and mechanical property.Therefore, to the real-time monitoring of molten bath state it is the key that controls SLM forming technologies.At present on welding
During molten bath monitoring research it is relatively many, and correlation technique also comparative maturity, but in SLM forming processes, laser
Sweep speed is very fast, and luminous power, beam scanning rate, gas componant, throughput, material property and thickness etc. are excited in molten bath
Factor influence is larger, it is therefore desirable to which monitoring system shooting speed is fast, and data volume is larger, and signal transacting must implement into
OK, being set with routine monitoring cannot realize real-time monitoring.
Utility model content
To solve the technical problem that prior art is present, the utility model provides one kind being capable of real-time monitoring SLM shapings
During bath temperature, shape and area, and online evaluation can be carried out to forming accuracy and laser power, and the selection fed back
Property laser fusion shaping molten bath real-time monitoring device.
To achieve the above object, the technical scheme that the utility model is used shapes molten bath for a kind of selective laser melting
Real-time monitoring device, including forming cavity, are provided with fusing shaping laser system and pulse laser, institute at the top of the forming cavity
The center of top for stating forming cavity is provided with clear glass, and the clear glass top is provided with laser lens barrel, the pulse laser
Device is connected by optical fiber with laser lens barrel, and crane is provided with the forming cavity, and the both sides of the crane are provided with liter
Descending mechanism, is provided with video camera, the fusing shaping laser system, pulse laser in the bottom multiple angle of the crane
Device, elevating mechanism and video camera are connected with master control system.
Preferably, the forming cavity top is provided with supporting support, and rotating shaft, the rotating shaft are provided with the supporting support
One end be provided with the first motor, the other end is provided with U-shaped frame, and the laser lens barrel is hinged in U-shaped frame, the U-shaped frame
The second motor is provided with jointed shaft, first motor, the second motor are connected with master control system.
Preferably, the laser lens barrel includes cylinder, beam expanding lens, focus lamp and protective glass, the top of the cylinder and light
Fibre connection, cylinder body bottom is provided with protective glass, the cylinder and is disposed with beam expanding lens and focus lamp from top to bottom.
Preferably, ring support is provided with the middle part of the crane, annular bottom is rotatablely equipped with the ring support
Seat, the bottom of the annular base is provided with annular groove, and top is provided with gear ring, and the annular base is installed on by annular groove
On ring support, the both sides of the annular base be provided with gear ring meshed gears, the 3rd motor is provided with the gear,
The video camera is uniformly fixed on the bottom of annular base, and an infrared temperature-test sensor, institute are additionally provided with by each video camera
The two bottom sides for stating ring support are additionally provided with infrared distance sensor, the 3rd motor, infrared temperature-test sensor and infrared
Distance measuring sensor is connected with master control system.
Preferably, it is provided with high temperature resistant protective cover on the camera lens of the video camera.
Compared with prior art, the utility model has following technique effect：The utility model can real-time monitoring SLM into
Bath temperature, shape and area during shape, and online evaluation can be carried out to forming accuracy and laser power, and information is anti-
Feed master control system, master control system realizes the control to metal bath, so as to realize to molded article so as to adjust laser power
The control of precision and mechanical property, improves the structure property of yield rate and product.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the mounting structure schematic diagram of laser lens barrel in the utility model.
Fig. 3 is the structural representation of laser lens barrel in the utility model.
Fig. 4 is the structural representation of annular base and ring support in the utility model.
Specific embodiment
In order that technical problem to be solved in the utility model, technical scheme and beneficial effect become more apparent, with
Lower combination drawings and Examples, are further elaborated to the utility model.It should be appreciated that specific reality described herein
Apply example to be only used to explain the utility model, be not used to limit the utility model.
As shown in figure 1, a kind of selective laser melting shaping molten bath real-time monitoring device, including forming cavity 1, forming cavity 1
Top be provided with fusing shaping laser system 8 and pulse laser 16, the center of top of forming cavity 1 is provided with clear glass 9,
The top of clear glass 9 is provided with laser lens barrel 11, and pulse laser 16 is connected by optical fiber 15 with laser lens barrel 11, forming cavity
Crane 5 is provided with 1, the both sides of crane 5 are provided with elevating mechanism 2, are provided with the bottom multiple angle of crane 5 and taken the photograph
Camera 20, fusing shaping laser system 8, pulse laser 16, elevating mechanism 2 and video camera 20 are connected with master control system 22
Connect.
Fusing shaping laser system 8 is laser sintered for being carried out to drip molding, and pulse laser 16 swashs for sending pulse
Light covers the electric arc in forming process, weakens the intensity of molten bath radiant light, consequently facilitating molten bath video camera is imaged to molten bath.
Pulse laser 16 is arranged on the top of forming cavity 1.Pulse laser laser power 7.5-12mW, peak power 75-90kW, one
The pulse duration is 1-2ns in the individual pulse period.The one end of optical fiber 15 connects pulse laser 16, other end connection laser mirror
Cylinder 11.Wherein, as shown in Fig. 2 the top of forming cavity 1 is provided with supporting support 13, rotating shaft 27, rotating shaft are provided with supporting support 13
27 one end is provided with the first motor 14, and the other end is provided with U-shaped frame 12, and laser lens barrel 11 is hinged in U-shaped frame 12, U-shaped frame
The second motor 10 is provided with 12 jointed shaft 28, the first motor 14, the second motor 10 are connected with master control system 22.Laser
Lens barrel is arranged on U-shaped frame, and swing can be carried out by the first motor U-shaped frame of driving, can be driven by the second motor
Laser lens barrel is swung, it is achieved thereby that the laser for sending is scanned in three dimensions, master control system 22 is according to model
Section and scan path control lens barrel motion, enable pulse laser to follow the shaping that fusing shaping laser system sends closely
The track motion of laser, so that pulse laser covers the electric arc in forming process, weakens the intensity of molten bath radiant light, so that just
In molten bath, camera system is imaged to molten bath.
As shown in figure 3, laser lens barrel 11 includes cylinder 24, beam expanding lens 23, focus lamp 25 and protective glass 26, the top of cylinder 24
Portion is connected with optical fiber 15, and the bottom of cylinder 24 is provided with protective glass 26, cylinder 24 and is disposed with the He of beam expanding lens 23 from top to bottom
Focus lamp 25.Beam expanding lens 23 is arranged on the lower section of optical fiber 15, for expanded light beam diameter, reduces beam divergence angle, reduces energy and damages
Consumption.Focus lamp 25 is installed in the lower section of beam expanding lens 23, and focus lamp 25 is mainly used in being focused light beam, reaches focal beam spot in scanning
In the range of obtain consistent focus characteristics.Focus lamp is installed below protective glass 26, and protective glass 26 is arranged on the bottom of lens barrel 11, uses
In the protection grade light path system of focus lamp 25.
As shown in Figure 1 and Figure 4, the middle part of crane 5 is provided with ring support 18, ring support 18 and is rotatablely equipped with ring
Shape base 17, the bottom of annular base 17 is provided with annular groove 19, and top is provided with gear ring 29, and annular base 17 passes through annular groove
29 are installed on ring support 18, the both sides of annular base 17 be provided with gear ring meshed gears 6, is provided with gear 6
Three motors 7, video camera 20 is uniformly fixed on the bottom of annular base 17, and an infrared measurement of temperature is additionally provided with by each video camera 20
Sensor 3, the two bottom sides of ring support 18 are additionally provided with infrared distance sensor 4, the 3rd motor 7, infrared temperature-test sensor 3
It is connected with master control system 22 with infrared distance sensor 4, high temperature resistant protective cover 21 is provided with the camera lens of video camera 20.
The quantity of video camera and infrared temperature-test sensor is 3 in the utility model, using between video camera, infrared survey
120 ° are mutually between temperature sensor to be arranged.Video camera and infrared temperature-test sensor are installed in the bottom of annular base, ring
On crane, the top of annular base is provided with the gear ring being meshed with gear to shape floor installation, and such elevating mechanism can
Crane is driven to move up and down, the 3rd motor can drive annular base rotation, so that video camera and infrared temperature-test sensor
Move therewith.Elevating mechanism can be hydraulicefficiency elevation structure, or mechanical elevating mechanism.Infrared temperature-test sensor is used for
Bath temperature is measured from different directions.The temperature data for measuring is subsequently communicated to master control system 22, master control system 22
It is analyzed with crater image data according to temperature measurement data, so as to further correct the temperature in molten bath, judges laser light rate.It is red
Outer distance measuring sensor is used to measure distance of the video camera 20 apart from drip molding, and by the feedback of the information to master control system 22,
Master control system 22 adjusts elevating mechanism according to the range information of feedback, video camera 20 is kept optimal camera distance with product,
According to fusing shaping laser system 8 laser scanning track, adjustment annular base makes video camera keep optimal shooting angle with molten bath
Degree.After video camera shoots molten bath from different perspectives, master control system 22, shape molten bath temperature of the master control system 22 to molten bath are transferred to
Degree, shape and area are analyzed, and can carry out online evaluation to laser power, so as to adjust laser power.
Specifically when real-time monitoring is carried out, operation is followed the steps below,
A, startup forming laser system, make its forming laser for sending, to formed powder according to model cross section profile size
Carry out fusing shaping；
B, startup laser strobe system, make to send pulse laser, master control system adjustment pulse laser using pulse laser
Running orbit, its running orbit is followed the running orbit of forming laser closely, and during the pulse laser covers forming process
The intensity of electric arc and molten bath radiant light；
The height of c, adjustment molten bath video camera, camera angle, it is ensured that optimal photographic effect, and molten bath picture is fed back
To master control system, master control system is analyzed to bath temperature, shape and area, calculates forming laser real work power, and
And contrasted with setting value；
D, molten bath infrared temperature-test sensor measure the temperature in molten bath from different perspectives, and the temperature information is transferred into master control
System, master control system is contrasted bath temperature information with the image information in molten bath, so that further checking bath temperature, shape
Shape and area, and forming laser actual power；
E, master control system adjust the power of forming laser according to above- mentioned information, realize the control to metal bath, so that real
Now to the control of molded article precision and mechanical property.
Preferred embodiment of the present utility model is the foregoing is only, is not used to limit the utility model, it is all at this
Any modification, equivalent and improvement made within the spirit and principle of utility model etc., all should wrap in the utility model model
In enclosing.
Claims (5)
1. a kind of selective laser melting shaping molten bath real-time monitoring device, including forming cavity, the top of the forming cavity is set
There are fusing shaping laser system and pulse laser, it is characterised in that：The center of top of the forming cavity is provided with clear glass,
Clear glass top is provided with laser lens barrel, and the pulse laser is connected by optical fiber with laser lens barrel, it is described into
Crane is provided with die cavity, the both sides of the crane are provided with elevating mechanism, in the bottom multiple angle of the crane
Video camera is provided with, the fusing shaping laser system, pulse laser, elevating mechanism and video camera are connected with master control system
Connect.
2. a kind of selective laser melting according to claim 1 shapes molten bath real-time monitoring device, it is characterised in that：Institute
State forming cavity top and be provided with supporting support, rotating shaft is provided with the supporting support, one end of the rotating shaft is provided with first
Motor, the other end is provided with U-shaped frame, and the laser lens barrel is hinged in U-shaped frame, and is provided with the jointed shaft of the U-shaped frame
Two motors, first motor, the second motor are connected with master control system.
3. a kind of selective laser melting according to claim 1 and 2 shapes molten bath real-time monitoring device, and its feature exists
In：The laser lens barrel includes cylinder, beam expanding lens, focus lamp and protective glass, and the top of the cylinder is connected with optical fiber, cylinder bottom
Portion is provided with protective glass, the cylinder and is disposed with beam expanding lens and focus lamp from top to bottom.
4. a kind of selective laser melting according to claim 1 shapes molten bath real-time monitoring device, it is characterised in that：Institute
State and ring support is provided with the middle part of crane, annular base is rotatablely equipped with the ring support, the annular base
Bottom is provided with annular groove, and top is provided with gear ring, and the annular base passes through annular groove clamp on a toroidal support, the ring
The both sides of shape base be provided with gear ring meshed gears, be provided with the 3rd motor on the gear, the video camera is uniformly solid
The bottom of annular base is scheduled on, an infrared temperature-test sensor, the bottom of the ring support are additionally provided with by each video camera
Both sides are additionally provided with infrared distance sensor, the 3rd motor, infrared temperature-test sensor and infrared distance sensor with master
Control system is connected.
5. a kind of selective laser melting according to claim 4 shapes molten bath real-time monitoring device, it is characterised in that：Institute
State and be provided with the camera lens of video camera high temperature resistant protective cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621091294.4U CN206200123U (en) | 2016-09-29 | 2016-09-29 | A kind of selective laser melting shapes molten bath real-time monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621091294.4U CN206200123U (en) | 2016-09-29 | 2016-09-29 | A kind of selective laser melting shapes molten bath real-time monitoring device |
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| CN206200123U true CN206200123U (en) | 2017-05-31 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106363171A (en) * | 2016-09-29 | 2017-02-01 | 中北大学 | Selective laser melting forming molten bath real-time monitoring device and monitoring method |
| CN107843205A (en) * | 2017-10-31 | 2018-03-27 | 中国科学院合肥物质科学研究院 | A kind of 3D printing feedback measurement apparatus and method based on laser interference |
| CN107999753A (en) * | 2017-12-01 | 2018-05-08 | 中国兵器装备集团自动化研究所 | A kind of synchronous feedback increase and decrease material Collaborative Manufacturing System and its application method |
| CN108844624A (en) * | 2018-06-01 | 2018-11-20 | 北京科技大学 | A kind of SLM process laser power monitor method based on temperature field |
| CN111093956A (en) * | 2017-08-11 | 2020-05-01 | 应用材料公司 | Temperature control for additive manufacturing |
| CN111141391A (en) * | 2019-12-25 | 2020-05-12 | 西安交通大学 | Molten pool laser synchronous following temperature measuring device and method for SLM forming process |
| CN112549555A (en) * | 2020-12-04 | 2021-03-26 | 北京星航机电装备有限公司 | 3D printing remote online monitoring method and system based on cloud platform |
| CN114630721A (en) * | 2019-11-11 | 2022-06-14 | 三菱电机株式会社 | Laminated shaping device |
-
2016
- 2016-09-29 CN CN201621091294.4U patent/CN206200123U/en active Active
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106363171A (en) * | 2016-09-29 | 2017-02-01 | 中北大学 | Selective laser melting forming molten bath real-time monitoring device and monitoring method |
| CN106363171B (en) * | 2016-09-29 | 2019-03-05 | 山西阳宸中北科技有限公司 | Selective laser melting shapes molten bath real-time monitoring device and monitoring method |
| CN111093956B (en) * | 2017-08-11 | 2022-05-31 | 应用材料公司 | Temperature control for additive manufacturing |
| CN111093956A (en) * | 2017-08-11 | 2020-05-01 | 应用材料公司 | Temperature control for additive manufacturing |
| CN107843205A (en) * | 2017-10-31 | 2018-03-27 | 中国科学院合肥物质科学研究院 | A kind of 3D printing feedback measurement apparatus and method based on laser interference |
| CN107999753B (en) * | 2017-12-01 | 2020-06-16 | 中国兵器装备集团自动化研究所 | Synchronous feedback material increase and decrease cooperative manufacturing system and use method thereof |
| CN107999753A (en) * | 2017-12-01 | 2018-05-08 | 中国兵器装备集团自动化研究所 | A kind of synchronous feedback increase and decrease material Collaborative Manufacturing System and its application method |
| CN108844624A (en) * | 2018-06-01 | 2018-11-20 | 北京科技大学 | A kind of SLM process laser power monitor method based on temperature field |
| CN108844624B (en) * | 2018-06-01 | 2020-01-21 | 北京科技大学 | SLM process laser power monitoring method based on temperature field |
| CN114630721A (en) * | 2019-11-11 | 2022-06-14 | 三菱电机株式会社 | Laminated shaping device |
| CN114630721B (en) * | 2019-11-11 | 2024-04-16 | 三菱电机株式会社 | Lamination shaping device |
| CN111141391A (en) * | 2019-12-25 | 2020-05-12 | 西安交通大学 | Molten pool laser synchronous following temperature measuring device and method for SLM forming process |
| CN112549555A (en) * | 2020-12-04 | 2021-03-26 | 北京星航机电装备有限公司 | 3D printing remote online monitoring method and system based on cloud platform |
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Legal Events
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190124 Address after: 030006 Shanxi Comprehensive Reform Demonstration Zone Taiyuan Xuefu Park South Central Street 529 Cleaning and Control Innovation Base D Block 21 Floor 02 Patentee after: Shanxi Yangchen Zhongbei Technology Co.,Ltd. Address before: 030051 Room 6319, 182 Building, College Road, Jiancao District, Taiyuan City, Shanxi Province Patentee before: Shanxi Zhongbei Science Park Co.,Ltd. Effective date of registration: 20190124 Address after: 030051 Room 6319, 182 Building, College Road, Jiancao District, Taiyuan City, Shanxi Province Patentee after: Shanxi Zhongbei Science Park Co.,Ltd. Address before: 030051 Xueyuan Road 3, pointed lawn area, Taiyuan, Shanxi Patentee before: NORTH University OF CHINA |
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| TR01 | Transfer of patent right |