CN107672161A - The method of testing and test platform of a kind of selective laser sintering - Google Patents
The method of testing and test platform of a kind of selective laser sintering Download PDFInfo
- Publication number
- CN107672161A CN107672161A CN201710794658.8A CN201710794658A CN107672161A CN 107672161 A CN107672161 A CN 107672161A CN 201710794658 A CN201710794658 A CN 201710794658A CN 107672161 A CN107672161 A CN 107672161A
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- 238000000110 selective laser sintering Methods 0.000 title claims abstract description 24
- 238000012360 testing method Methods 0.000 title claims abstract description 24
- 238000010998 test method Methods 0.000 title claims abstract description 8
- 238000005245 sintering Methods 0.000 claims abstract description 73
- 239000000843 powder Substances 0.000 claims abstract description 61
- 238000001514 detection method Methods 0.000 claims abstract description 33
- 239000000463 material Substances 0.000 claims abstract description 21
- 230000007547 defect Effects 0.000 claims abstract description 16
- 238000004891 communication Methods 0.000 claims abstract description 9
- 230000000694 effects Effects 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims description 17
- 239000010410 layer Substances 0.000 claims description 16
- 238000004458 analytical method Methods 0.000 claims description 15
- 238000005516 engineering process Methods 0.000 claims description 5
- 230000007423 decrease Effects 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 3
- 239000002356 single layer Substances 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 210000001161 mammalian embryo Anatomy 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Classifications
-
- 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
-
- 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
- B33Y40/00—Auxiliary operations or equipment, e.g. for material handling
-
- 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
- B33Y50/00—Data acquisition or data processing for additive manufacturing
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Analysing Materials By The Use Of Radiation (AREA)
Abstract
The invention provides a kind of method of testing of selective laser sintering and test platform, the test platform includes sintering module and detection module, sintering module includes powder feeding unit, sinter unit and mobile unit, powder feeding unit is sintering unit powder feeding, sintering unit is installed in mobile unit, it can move forward and backward up and down, detection module includes ray emitter, ray reception device, air blower, server and communication module, detection module can detect the quality of individual layer sintered powder, and layer by layer between sintering quality, realize and the comprehensive quality of sintering is detected.The present invention can detect the defects of finding selective laser sintering finished product problem, analyze the effect that the thickness of optimal sintering section sinters from different dusty materials, be easy to select most preferably to sinter slice thickness and dusty material, improve the sintering quality of product.
Description
Technical field
The present invention relates to material increasing field, more particularly to a kind of method of testing of selective laser sintering and test to put down
Platform.
Background technology
Selective Laser Sintering refers to make the energy using infrared laser, and the Modeling Material used is mostly powder material
Material.During processing, powder is preheating to the temperature of slightly less than its fusing point first, then spread powder in the presence of rod is struck off
It is flat；Laser beam is selectively sintered according to layering cross section information under the control of the computer, is carried out again after the completion of one layer next
Layer sintering, removes unnecessary powder after all having sintered, then can be obtained by the part sintered.
In recent years, selective laser sintering part is because of features such as its unique physicochemical property, mechanical performance and specific functions
And by extensive concern.There is great researching value in special material, exotic material, multifunctional composite etc., with
This simultaneously, certain research defect because of the simplification of sintering process be present in selective laser sintering part, as densification degree is low,
Porosity is higher, shape embryo intensity is more low, so as to cause material in the aspect of performances such as mechanical strength, consistency deficiency, at present choosing
The laser sintered test platform Development Technology of selecting property is still not mature enough.
The content of the invention
For Shortcomings in the prior art, the invention provides a kind of method of testing of selective laser sintering and test
Platform, this method can analyze the effect that optimum single layer sintering slice thickness sinters from different dusty materials, be easy to selection optimal
Individual layer sinters slice thickness and corresponding dusty material, so as to improve the sintering quality of product.
The present invention is to realize above-mentioned technical purpose by following technological means.
A kind of method of testing of selective laser sintering, comprises the following steps：
S1：Feeding process, start the mobile unit of selective laser sintering test platform so that mobile platform, which is moved to, to be leaned on
The marginal position of nearly storage powder case, self-powered platform rise, and on the powder in powder-laying roller drive storage powder case to sintering platform, complete individual layer
After the powder for sintering thickness, mobile platform is moved to sintered location；
S2：Sintering process：Laser generator is opened, using selective sintering technology, sintering metal powder, sinters single monolayer thick
Laser is closed after the completion of degree；
S3：Detection process：Sintering platform is moved between the ray emitter in detection module and ray reception device,
Open air blower and blow away powder on sintered part, lifting screw ejection sintered part, close air blower, sintered part stops after all exposing
The motion of lifting screw, opens ray emitter and ray reception device, ray reception device receive ray emitter
Penetrate line formed image, and image is sent to server by the communication module in detection module, server is to detection image
Carry out defect analysis, formed sintering section quality the defects of analysis result；
S4：Repeat step S1 to S3, change the size for the height that the material of powder and lifting screw single decline, so as to divide
The effect that analysis individual layer sintering slice thickness sinters from different dusty materials.
A kind of selective laser sintering test platform, including sintering module and detection module；
The sintering module includes powder feeding unit, sintering unit and mobile unit, and the sintering unit includes laser
Device, lifting screw and sintering platform, the sintering platform are fixed in mobile unit, and lifting screw is installed vertically in mobile unit,
And in sintering platform, the mobile unit is installed on the inside of frame bottom, the mobile unit is enabled to before and after sintering platform
Move left and right, pass through the slice thickness for controlling the height that lifting screw single declines to control individual layer to sinter, the laser generator
Frame top inner side, and face sintered location are installed on, the powder feeding unit conveys powder for sintering platform；
The detection module includes ray emitter, ray reception device, air blower, server and communication module, described
Ray emitter is installed on the position control on frame inner side surface, and the ray emitter can be moved up and down and revolved
Turn.
The ray reception device and air blower are mounted on the inside of frame side, the wind direction direction sintering of the air blower
Platform, the ray reception device are located at the opposite of ray emitter, for receiving ray that ray emitter sends and forming inspection
Altimetric image, the communication module electrically connect with ray emitter, ray reception device and server, for detection image to be sent
To server, the server is used for the detection image for receiving ray reception device and carries out defect analysis, shape to detection image
Into analysis result the defects of the quality for sintering section, and analyze what the thickness that optimal sintering is cut into slices sintered from different dusty materials
Effect.
Preferably, the useless powder case of top end opening is included, the useless powder case is installed on Chu Fenxiang lower section, and useless powder case
Aperture area be more than storage powder case aperture area.
Preferably, the mobile unit includes setting up and down and orthogonal first screw mandrel and the second screw mandrel, guide rail
The motor shaft of plate and mobile platform, the motor axis connection of first screw mandrel and the first motor, the second screw mandrel and the second motor connects
Connecing, first screw mandrel is installed on the inside of the bottom of frame, and the bottom surface of the guide-rail plate is connected with the first threads of lead screw, and described the
Two screw mandrels are installed on guide-rail plate, and the bottom surface of the mobile platform is connected with the second wire rod thread, and the lifting screw is installed on
On mobile platform.
Preferably, the both ends of first screw mandrel and the second screw mandrel pass through bearing seat supports.
Preferably, the powder feeding unit is installed on including self-powered platform, storage powder case and powder-laying roller, the self-powered platform
On the outside of the side of frame, storage powder case is installed on self-powered platform, and storage powder case can be moved up and down by self-powered platform.
Beneficial effects of the present invention：
The present invention can measure the quality of individual layer sintering section, including sintering crack, warpage, deformation, and sinter layer by layer
Sintering quality between section, realize and complete detection carried out to the quality of sintered part(s), so as to find selective laser sintering into
The defects of product problem, analyze the effect that the thickness of optimal sintering section sinters from different dusty materials, be easy to select most preferably to sinter
Slice thickness and dusty material, improve the sintering quality of product.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the test platform for the method for testing for realizing selective laser sintering of the present invention
Figure.
Fig. 2 is Fig. 1 front view.
Fig. 3 is Fig. 1 top view.
Fig. 4 is the scheme of installation of ray emitter of the present invention.
Wherein：
1. frame；2. the first screw mandrel；3. bearing block；4. self-powered platform；5. store up powder case；6. powder-laying roller；7. ray receives
Device；8. air blower；9. useless powder case；10. laser generator；11. the second screw mandrel；12. sinter platform；13. ray emitter；14.
Screw rod；15. the first motor；16. mobile platform；17. guide-rail plate；18. the second motor.
Embodiment
Below in conjunction with the accompanying drawings and specific embodiment the present invention is further illustrated, but protection scope of the present invention is simultaneously
Not limited to this.
As shown in figure 1, a kind of selective laser sintering test platform of the present invention, including sintering module and detection mould
Block, the sintering module include powder feeding unit, sintering unit and mobile unit, and the powder feeding unit is sintering unit transportation powder
End, powder feeding unit include self-powered platform 4, storage powder case 5 and powder-laying roller 6, the self-powered platform 4 and are installed on the side of frame 1
Outside, storage powder case 5 are installed on self-powered platform 4, and storage powder case 5 can be moved up and down by self-powered platform 4, storage powder case 5
Lower section is provided with useless powder case 9, and give up the top end opening of powder case 9, and the aperture area of useless powder case 9 is more than the aperture area of storage powder case 5, just
In collection excessive powder.
The mobile unit includes the setting up and down and orthogonal screw mandrel 11 of first screw mandrel 2 and second, guide-rail plate 17
With mobile platform 16, the motor axis connection of the motor 15 of the first screw mandrel 2 and first, the electricity of the second screw mandrel 11 and the second motor 18
Arbor is connected, and first screw mandrel 2 is installed on by two bearing blocks 3 on the inside of the bottom of frame 1, the bottom surface of the guide-rail plate 17
It is threadedly coupled with the first leading screw 2, second screw mandrel 11 is installed on guide-rail plate 17 by two bearing blocks 3, and the movement is put down
The bottom surface of platform 16 is threadedly coupled with the second screw mandrel 11, and the lifting screw 14 is installed on mobile platform 16.
As shown in Figures 2 and 3, the sintering unit includes laser generator 10, lifting screw 14 and sintering platform 12, described
Sintering platform 12 is fixed in mobile unit, and lifting screw 14 is installed vertically in mobile unit, and in sintering platform 12, it is described
Mobile unit is installed on the inside of the bottom of frame 1, and the mobile unit enables to sintering platform 12 all around to move, and passes through control
The slice thickness for the height control individual layer sintering that the single of lifting screw 4 declines, the laser generator 10 are installed on the top of frame 1
Inner side, and face sintered location.
The detection module includes ray emitter 13, ray reception device 7, air blower 8, server and communication module,
As shown in figure 4, the ray emitter 13 is installed on the position control on the medial surface of frame 1, the ray emitter 13
It can move up and down and rotate.
As shown in figure 1, the ray reception device 7 and air blower 8 are mounted on the inside of the side of frame 1, the air blower 8
Wind direction towards sintering platform 12, the ray reception device 7 is located at the opposite of ray emitter 13, for receiving ray emitter
13 rays sent simultaneously form detection image, and the server is used for the detection image for receiving ray reception device 7 and to detection
Image carries out defect analysis and forms defect analysis result, the communication module and ray emitter 13, the kimonos of ray reception device 7
It is engaged in device electrical connection, for detection image to be sent into server, and analysis result the defects of the reception server is sent.
A kind of method of testing of selective laser sintering, comprises the following steps：
S1：Feeding process, start the mobile unit of selective laser sintering test platform so that mobile platform 16 is moved to
Close to the marginal position of storage powder case 5, self-powered platform 4 rises, on the powder in the drive storage powder of powder-laying roller 6 case 5 to sintering platform 12,
After the powder for completing individual layer sintering thickness, mobile platform 16 is moved to sintered location；
S2：Sintering process：Laser generator 10 is opened, using selective sintering technology, sintering metal powder, sinters individual layer
Laser 10 is closed after the completion of thickness；
S3：Detection process：The ray emitter 13 and ray reception device 7 that sintering platform 16 is moved in detection module
Between, open air blower 8 and blow away powder on sintered part, lifting screw 14 ejects sintered part, closes air blower 8, and sintered part is whole
Stop the motion of lifting screw 14 after exposing, open ray emitter 13 and ray reception device 7, ray reception device 7 receive
Line formed image is penetrated to what ray emitter 13 occurred, and image is sent to service by the communication module in detection module
The defects of device, server carry out defect analysis to detection image, and formation sinters the quality of section analysis result；
S4：Repeat step S1 to S3, change the size for the height that the material of powder and the single of lifting screw 4 decline, so as to
The effect that analysis individual layer sintering slice thickness sinters from different dusty materials.
The embodiment is preferred embodiment of the invention, but the present invention is not limited to above-mentioned embodiment, not
Away from the present invention substantive content in the case of, those skilled in the art can make it is any it is conspicuously improved, replace
Or modification belongs to protection scope of the present invention.
Claims (6)
1. a kind of method of testing of selective laser sintering, it is characterised in that comprise the following steps：
S1：Feeding process, start the mobile unit of selective laser sintering test platform so that mobile platform (16), which is moved to, to be leaned on
The marginal position of nearly storage powder case (5), self-powered platform (4) rise, the powder in powder-laying roller (6) drive Chu Fenxiang (5) to sintering
On platform (12), after the powder for completing individual layer sintering thickness, mobile platform (16) is moved to sintered location；
S2：Sintering process：Laser generator (10) is opened, using selective sintering technology, sintering metal powder, sinters single monolayer thick
Laser (10) is closed after the completion of degree；
S3：Detection process：The ray emitter (13) and ray reception device that sintering platform (16) is moved in detection module
(7) between, open air blower (8) and blow away powder on sintered part, lifting screw (14) ejection sintered part, close air blower (8), burn
Knot part stops the motion of lifting screw (14) after all exposing, open ray emitter (13) and ray reception device (7), ray
Reception device (7) receives the line formed image of penetrating of ray emitter (13) generation, and image is passed through into leading in detection module
The defects of news module is sent to server, and server carries out defect analysis to detection image, forms the quality that sintering is cut into slices is analyzed
As a result；
S4：Repeat step S1 to S3, change the size for the height that the material of powder and lifting screw (4) single decline, so as to divide
The effect that analysis individual layer sintering slice thickness sinters from different dusty materials.
A kind of 2. test platform for the method for testing for realizing selective laser sintering described in claim 1, it is characterised in that including
Sinter module and detection module；
The sintering module includes powder feeding unit, sintering unit and mobile unit, and the sintering unit includes laser generator
(10), lifting screw (14) and sintering platform (12), the sintering platform (12) are fixed in mobile unit, and lifting screw (14) is vertical
It is installed in mobile unit, and in sintering platform (12), the mobile unit is installed on the inside of frame (1) bottom, the shifting
Moving cell enables to sintering platform (12) all around to move, and passes through the height for controlling lifting screw (4) single to decline and controls list
The slice thickness of layer sintering, the laser generator (10) are installed on frame (1) top inner side, and face sintered location, institute
State powder feeding unit and convey powder for sintering platform (12)；
The detection module includes ray emitter (13), ray reception device (7), air blower (8), server and communication mould
Block, the ray emitter (13) are installed on the position control on frame (1) medial surface, ray emitter (13) energy
Enough move up and down and rotate；
The ray reception device (7) and air blower (8) are mounted on the inside of frame (1) side, the wind direction of the air blower (8)
Towards sintering platform (12), the ray reception device (7) is located at the opposite of ray emitter (13), for receiving ray emitter
(13) ray that sends simultaneously forms detection image, the communication module and ray emitter (13), ray reception device (7) kimonos
Business device electrical connection, for detection image to be sent into server, the server is used for the detection for receiving ray reception device (7)
The defects of image simultaneously carries out defect analysis to detection image, and formation sinters the quality of section analysis result, and analyze optimal burning
The effect that the thickness of knot section sinters from different dusty materials.
3. the test platform of the method for testing according to claim 2 for realizing selective laser sintering, it is characterised in that also
Useless powder case (9) including top end opening, the useless powder case (9) are installed on the lower section of Chu Fenxiang (5), and useless powder case (9) are opened
Open area is more than Chu Fenxiang (5) aperture area.
4. the test platform of the method for testing according to claim 2 for realizing selective laser sintering, it is characterised in that institute
Stating mobile unit includes setting up and down and orthogonal first screw mandrel (2) and the second screw mandrel (11), guide-rail plate (17) and moves
Moving platform (16), first screw mandrel (2) and the motor axis connection of the first motor (15), the second screw mandrel (11) and the second motor
(18) motor axis connection, first screw mandrel (2) are installed on the inside of the bottom of frame (1), the bottom surface of the guide-rail plate (17)
It is threadedly coupled with the first leading screw (2), second screw mandrel (11) is installed on guide-rail plate (17), the bottom of the mobile platform (16)
Face is threadedly coupled with the second screw mandrel (11), and the lifting screw (14) is installed on mobile platform (16).
5. the test platform of the method for testing according to claim 2 for realizing selective laser sintering, it is characterised in that institute
The both ends for stating the first screw mandrel (2) and the second screw mandrel (11) are supported by bearing block (3).
6. the test platform of the method for testing according to claim 1 for realizing selective laser sintering, it is characterised in that institute
Stating powder feeding unit includes self-powered platform (4), Chu Fenxiang (5) and powder-laying roller (6), and the self-powered platform (4) is installed on frame
(1) on the outside of side, Chu Fenxiang (5) is installed on self-powered platform (4), and Chu Fenxiang (5) can be by self-powered platform (4)
Lower motion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710794658.8A CN107672161A (en) | 2017-09-06 | 2017-09-06 | The method of testing and test platform of a kind of selective laser sintering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710794658.8A CN107672161A (en) | 2017-09-06 | 2017-09-06 | The method of testing and test platform of a kind of selective laser sintering |
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| Publication Number | Publication Date |
|---|---|
| CN107672161A true CN107672161A (en) | 2018-02-09 |
Family
ID=61134512
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710794658.8A Pending CN107672161A (en) | 2017-09-06 | 2017-09-06 | The method of testing and test platform of a kind of selective laser sintering |
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| Country | Link |
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| CN (1) | CN107672161A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109407109A (en) * | 2018-12-28 | 2019-03-01 | 江苏通鼎光棒有限公司 | A kind of device and its monitoring method being sintered length for monitoring VAD loosening body |
| CN110057858A (en) * | 2019-03-29 | 2019-07-26 | 江苏大学 | A kind of laser sintered test macro and method |
| CN111268411A (en) * | 2020-01-23 | 2020-06-12 | 华东理工大学 | Workbench transfer and transportation system for large SLM (Selective laser melting) equipment |
| CN112770336A (en) * | 2019-10-21 | 2021-05-07 | 中移(成都)信息通信科技有限公司 | Equipment testing method and system |
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| CN207327603U (en) * | 2017-09-06 | 2018-05-08 | 江苏大学 | A kind of selective laser sintering test platform |
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| CN110057858A (en) * | 2019-03-29 | 2019-07-26 | 江苏大学 | A kind of laser sintered test macro and method |
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| CN111268411A (en) * | 2020-01-23 | 2020-06-12 | 华东理工大学 | Workbench transfer and transportation system for large SLM (Selective laser melting) equipment |
| CN111268411B (en) * | 2020-01-23 | 2021-07-20 | 华东理工大学 | Workbench transfer and transportation system for large SLM (Selective laser melting) equipment |
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