CN108044932A - A kind of device for improving precinct laser sintering/melting process drip molding consistency - Google Patents
A kind of device for improving precinct laser sintering/melting process drip molding consistency Download PDFInfo
- Publication number
- CN108044932A CN108044932A CN201810061864.2A CN201810061864A CN108044932A CN 108044932 A CN108044932 A CN 108044932A CN 201810061864 A CN201810061864 A CN 201810061864A CN 108044932 A CN108044932 A CN 108044932A
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- Prior art keywords
- forming board
- piezoelectric element
- laid
- formed powder
- melting process
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000000465 moulding Methods 0.000 title claims abstract description 22
- 238000000149 argon plasma sintering Methods 0.000 title claims abstract description 21
- 238000010309 melting process Methods 0.000 title claims abstract description 18
- 239000000843 powder Substances 0.000 claims abstract description 47
- 229910002114 biscuit porcelain Inorganic materials 0.000 claims abstract description 17
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 10
- 238000002604 ultrasonography Methods 0.000 claims abstract description 7
- 238000007493 shaping process Methods 0.000 claims description 10
- 230000007246 mechanism Effects 0.000 claims description 6
- 239000000758 substrate Substances 0.000 claims description 6
- 238000005245 sintering Methods 0.000 claims description 4
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 10
- 238000005516 engineering process Methods 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 4
- 238000000227 grinding Methods 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 238000010146 3D printing Methods 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000010310 metallurgical process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- 230000009466 transformation Effects 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
- 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
- B22F12/49—Scanners
-
- 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]
-
- 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 invention discloses a kind of device for improving precinct laser sintering/melting process drip molding consistency, including formation cylinder, forming board, support plate, at least laser, one piece of piezoelectric element, scanning galvanometer system, formed powder, it is characterised in that：The forming board includes upper forming board and lower forming board, upper forming board is nested in lower forming board, and it can move up and down along the guide groove of lower forming board Z-direction, the piezoelectric element is fixedly connected with upper forming board, after high frequency voltage is applied on piezoelectric element, forming board is made to generate high frequency ultrasound vibration, and passes to formed powder, gas is accelerated to be overflowed from formed powder, is laid with bisque fine and close.The device of the invention is changed in existing precinct laser sintering/melting process since bisque is laid with the unsound present situation of drip molding caused by the gas that includes has little time to overflow in not fine and close and dusty material, improves the consistency of precinct laser sintering/melting process drip molding.
Description
Technical field
It is more particularly to a kind of for the choosing of nonmetallic and metal powder material the present invention relates to a kind of laser gain material manufacturing technology
Area is laser sintered/building mortion of fusing, belong to increasing material manufacturing equipment technical field.
Background technology
Increasing material manufacturing (3D printing) technology by accumulating forming face point by point, successively accumulation formed the part shaping techniques of body to
Manufacturing technology, which manufactures to be integrated to grand micro-structure from traditional macro geometry, provides new opportunity, particularly laser gain material system
The technology of making be it is a kind of take into account Accurate Shaping and high-performance becomes second nature the advanced manufacturing technology of integrated demand, can be in the short period of time
Complicated shape part and personalization, the direct manufacture for customizing part, have been subject to countries in the world to pay much attention to, skill inside and outside realization
Art is commercially available to be increased rapidly.Wherein, precinct laser sintering/fusing (SLS/SLM) technology, which is particularly suitable for manufacture, has fine shape
Complicated nonmetallic/metal parts of shape feature.
But due to the substantive characteristics of SLS/SLM technologies be based on the successively powdering of powder bed, the mistake of successively selective melting
Journey, the laser point by point scanning of high-energy density, by-line overlap joint, successively Melting And Solidification is accumulated, while laser and material occurs
Reciprocation, the extraordinary metallurgical process of laser in mobile molten bath, mobile molten bath are fast under ultra high temperature gradient and Condition of Strong Constraint
Rapid hardening is solid and successively accumulates thermal stress evolution etc. under the internal soundness evolution of three-dimensional structure, the long-term cycling condition of Complex Constraints, into
Shape process is extremely complex, and it is that current SLS/SLM needs a key technology solved that drip molding is not fine and close.Bisque laying will not
It is to cause the unsound main cause of SLS/SLM drip moldings that the gas included in close and dusty material, which has little time to overflow, and is shaped
The not fine and close surrender for reducing part of part and tensile strength, and then affect the performance of part.
The content of the invention
To solve the above problems, the object of the present invention is to provide a kind of raising precinct laser sintering/melting process drip moldings
The device of consistency, for improving since bisque laying is not fine and close in existing SLS/SLM techniques, contents come in dusty material
Not as good as the unsound present situation of drip molding caused by overflowing, the consistency of SLS/SLM process forming parts is improved, is shaped so as to improve
The mechanical property of part.
In order to achieve the above object, the technical solution adopted by the present invention is：A kind of raising precinct laser sintering/melting process
The device of drip molding consistency shakes including formation cylinder, forming board, support plate, laser, at least one piece of piezoelectric element, scanning
Mirror system, formed powder, it is characterised in that：The forming board includes upper forming board and lower forming board, under described
Forming board is mounted on by moving mechanism on the formation cylinder；The upper forming board is nested in the lower shaping base
In plate, upper forming board can up and down be transported along the Z direction along the guide groove of lower forming board Z-direction in lower forming board
It is dynamic, but in X, Y both direction, upper forming board is moved with lower forming board as an Integral synchronous；The shaping powder
End is laid on the upper forming board；The laser and scanning galvanometer system are mounted in the support plate, are used
The formed powder on upper forming board is laid in selective sintering/fusing；Described at least one piece of piezoelectric element with it is described
Upper forming board is fixedly connected, and after high frequency voltage is applied on piezoelectric element, makes the high frequency of forming board generation along the Z direction
Ultrasonic vibration, and the formed powder being laid on forming board is passed to, the movement for increasing formed powder and contents is driven
Power accelerates contents to be overflowed from formed powder, is laid with bisque fine and close.
As a further improvement, at least one piece of piezoelectric element of the present invention is fixedly connected on the upper forming board
Inner cavity in, the mounting hole of piezoelectric element and high frequency voltage controller connecting wire is provided on the upper forming board.
The beneficial effects of the invention are as follows：A kind of raising precinct laser sintering/melting process drip molding consistency of the present invention
Device, change in existing precinct laser sintering/melting process and included since bisque is laid in not fine and close and dusty material
Gas has little time the unsound present situation of drip molding caused by overflowing, and improves precinct laser sintering/melting process drip molding
Consistency, and then improve the mechanical property of precinct laser sintering/fusing drip molding.
Description of the drawings
Fig. 1 is the device of the invention general structure schematic diagram.
Component serial number in attached drawing is as follows：Formation cylinder 1, forming board 2, upper forming board 2a, lower forming board 2b, branch
Fagging 3, laser 4, piezoelectric element 5, scanning galvanometer system 6, formed powder 7
Specific embodiment
With reference to the accompanying drawings and examples, the present invention is further described.
The present invention a kind of raising precinct laser sintering/melting process drip molding consistency device, including formation cylinder, into
Shape substrate, support plate, at least laser, one piece of piezoelectric element, scanning galvanometer system, formed powder, it is characterised in that：Described
Forming board includes upper forming board and lower forming board, and lower forming board is mounted on by moving mechanism on formation cylinder；On into
Shape substrate is nested in lower forming board, and upper forming board can be along the guide groove of lower forming board Z-direction in lower shaping base
It moves up and down along the Z direction in plate, but in X, Y both direction, upper forming board is same as an entirety with lower forming board
Step movement；Formed powder is laid on forming board；Laser and scanning galvanometer system are installed on the supporting plate, for selecting
Property sintering/fusing is laid in the formed powder on forming board.
At least one piece of piezoelectric element is fixedly connected with the upper forming board, when applying high frequency on piezoelectric element
After voltage, make forming board generate along the Z direction high frequency ultrasound vibration, and pass to be laid on forming board into
Shape powder increases the movement driving force of formed powder and contents, and contents is accelerated to be overflowed from formed powder, make bisque
It is laid with fine and close.
As a further improvement, at least one piece of piezoelectric element of the present invention is fixedly connected on the inner cavity of forming board
In, the mounting hole of piezoelectric element and high frequency voltage controller connecting wire is provided on upper forming board, to facilitate in piezoelectric element
Upper application high frequency voltage.
The present invention improve precinct laser sintering/melting process drip molding consistency principle be：Piezoelectric element is fixedly connected
In the inner cavity of upper forming board, and upper forming board can be along the guide groove of lower forming board Z-direction in lower shaping base
It moves up and down along the Z direction in plate, by applying high frequency voltage on the piezoelectric element, high-frequency electrical energy is converted to mechanical energy, is made
Upper forming board generates the mechanical high frequency ultrasound vibration of Z-direction, and passes to the formed powder being laid on forming board.By
Powder principle of dynamics understands that the factors such as the movement of powder and the bulk density of powder, acceleration are related.It is burnt in precinct laser
During knot/fusing shaping, the contents in formed powder are changed into the gas in mobile molten bath after powder fusing, and move
The quick solidification in dynamic molten bath is so that gas motion driving force deficiency, causes gas to have little time to overflow and form spherical porosity, make into
Shape part is not fine and close.The present invention provides the movement driving force of formed powder and contents with high frequency ultrasound mode of vibration, accelerates
The movement velocity of formed powder and contents.Since gaseous mass is relatively light, formed powder quality is relatively heavy, is driving
The lower gas of power effect is quickly overflowed from formed powder, meanwhile, the position powder that is formed for overflowing gas occupies rapidly, makes into
Shape powder density increases, so that bisque is fine and close, and then improves the consistency of precinct laser sintering/melting process drip molding.
As shown in Figure 1, a kind of device of raising precinct laser sintering/melting process drip molding consistency of the present invention, bag
Include formation cylinder 1, forming board 2, upper forming board 2a, lower forming board 2b, support plate 3, at least laser 4, one piece of piezoelectricity member
Part 5, scanning galvanometer system 6, formed powder 7.It is characterized in that：The forming board 2 include upper forming board 2a and it is lower into
Shape substrate 2b, the lower forming board 2b are mounted on by moving mechanism on the formation cylinder 1.
The upper forming board 2a is nested in the lower forming board 2b, upper forming board 2a can along it is lower into
The guide groove of shape substrate 2b Z-directions moves up and down along the Z direction in lower forming board 2b, but in X, Y both direction, on
Forming board 2a and lower forming board 2b is moved as an Integral synchronous.
The formed powder 7 is laid on the upper forming board 2a.
The laser 4 and scanning galvanometer system 6 are mounted in the support plate 3, for selective sintering/fusing
The formed powder 7 being laid on forming board 2a.
At least one piece of piezoelectric element 5 is fixedly connected with the upper forming board 2a, is applied when on piezoelectric element 5
After high frequency voltage, the high frequency ultrasound that forming board 2a is generated along the Z direction is vibrated, and passes to and is laid in forming board
Formed powder 7 on 2a increases the movement driving force of formed powder 7 and contents, accelerates contents from formed powder 7
It overflows, is laid with bisque fine and close.
As a further improvement, at least one piece of piezoelectric element 5 of the present invention is fixedly connected on the upper shaping base
In the inner cavity of plate 2a, the installation of piezoelectric element 5 and high frequency voltage controller connecting wire is provided on the upper forming board 2a
Hole (is not drawn into) in figure, applies high frequency voltage on the piezoelectric element to facilitate.
A kind of device of raising precinct laser sintering/melting process drip molding consistency of the present invention, the course of work are：
System initialization first, and the setting of precinct laser sintering/melting process various parameters is carried out, including laser power, scanning speed
The setting of the technological parameters such as degree, powdering thickness.Then, according to control instruction, by sending powdering mechanism (being not drawn into figure) will be into
Shape powder 7 is laid on forming board 2a, is applied high frequency voltage at least one piece of piezoelectric element 5 and is allowed to generate high frequency ultrasound
It vibrates and passes to the formed powder 7 being laid on forming board 2a, by controlling frequency of sound wave, amplitude, time of vibration etc.
Parameter makes the contents in formed powder 7 overflow simultaneously jolt ramming formed powder 7 rapidly, completes first layer bisque and is laid with fine and close work
Make.
After first layer bisque is laid with densification, according to control instruction, laser 4 and scanning galvanometer system 6 pass through in support plate 3
Laser window (being not drawn into figure), selective scanning simultaneously cures the corresponding bisque of first layer, completes the scanning of first layer bisque.
After the first layer bisque end of scan, according to control instruction, forming board 2 in the case where Z-direction moving mechanism drives, into
Decline a bisque height in shape cylinder 1, restart one layer of new bisque and be laid with fine and close work, and restart one layer of new powder
Layer scanning, so repeatedly, until the drip molding manufacture on forming board 2 finishes, reaching precinct laser sintering/smelting technology will
It asks.
Other undeclared parts of the present invention are same as the prior art.
Above-mentioned specific embodiment is used for illustrating the present invention rather than limiting the invention, the present invention's
In spirit and scope of the claims, all technical solutions for equivalent substitution or equivalent transformation being taken to be obtained the present invention,
Both fall within protection scope of the present invention.
Claims (2)
1. a kind of device for improving precinct laser sintering/melting process drip molding consistency, including formation cylinder, forming board, branch
Fagging, at least laser, one piece of piezoelectric element, scanning galvanometer system, formed powder, it is characterised in that：The forming board
Including upper forming board and lower forming board, the lower forming board is mounted on by moving mechanism on the formation cylinder；
The upper forming board is nested in the lower forming board, and upper forming board can be along lower forming board Z side
To guide groove move up and down along the Z direction in lower forming board, but in X, Y both direction, upper forming board with it is lower into
Shape substrate is moved as an Integral synchronous；
The formed powder is laid on the upper forming board；
The laser and scanning galvanometer system are mounted in the support plate, are laid in for selective sintering/fusing
Formed powder on upper forming board；
At least one piece of piezoelectric element is fixedly connected with the upper forming board, when applying high frequency voltage on piezoelectric element
Afterwards, vibrate the high frequency ultrasound that forming board generates along the Z direction, and pass to the shaping powder being laid on forming board
End increases the movement driving force of formed powder and contents, and contents is accelerated to be overflowed from formed powder, are laid with bisque
It is fine and close.
2. a kind of device for improving precinct laser sintering/melting process drip molding consistency according to claim 1, special
Sign is：At least one piece of piezoelectric element is fixedly connected in the inner cavity of the upper forming board, the upper shaping
The mounting hole of piezoelectric element and high frequency voltage controller connecting wire is provided on substrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810061864.2A CN108044932A (en) | 2018-01-18 | 2018-01-18 | A kind of device for improving precinct laser sintering/melting process drip molding consistency |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810061864.2A CN108044932A (en) | 2018-01-18 | 2018-01-18 | A kind of device for improving precinct laser sintering/melting process drip molding consistency |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108044932A true CN108044932A (en) | 2018-05-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810061864.2A Pending CN108044932A (en) | 2018-01-18 | 2018-01-18 | A kind of device for improving precinct laser sintering/melting process drip molding consistency |
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| Country | Link |
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| CN (1) | CN108044932A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117102506A (en) * | 2023-08-30 | 2023-11-24 | 江苏大学 | Shape regulation and control method and device for selective melting of ultrasonic rolling composite laser |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106378452A (en) * | 2016-11-28 | 2017-02-08 | 南京农业大学 | Increased/decreased material mixed manufacturing platform |
| CN106475559A (en) * | 2015-08-25 | 2017-03-08 | 通用电气公司 | For adding the coater Apparatus and method for manufacturing |
| CN207772416U (en) * | 2018-01-18 | 2018-08-28 | 南京农业大学 | A kind of device improving precinct laser sintering/melting process drip molding consistency |
-
2018
- 2018-01-18 CN CN201810061864.2A patent/CN108044932A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106475559A (en) * | 2015-08-25 | 2017-03-08 | 通用电气公司 | For adding the coater Apparatus and method for manufacturing |
| CN106378452A (en) * | 2016-11-28 | 2017-02-08 | 南京农业大学 | Increased/decreased material mixed manufacturing platform |
| CN207772416U (en) * | 2018-01-18 | 2018-08-28 | 南京农业大学 | A kind of device improving precinct laser sintering/melting process drip molding consistency |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117102506A (en) * | 2023-08-30 | 2023-11-24 | 江苏大学 | Shape regulation and control method and device for selective melting of ultrasonic rolling composite laser |
| CN117102506B (en) * | 2023-08-30 | 2024-03-12 | 江苏大学 | Shape regulation and control method and device for selective melting of ultrasonic rolling composite laser |
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Application publication date: 20180518 |