CN107283829A - A kind of high-precision precinct laser sintering method and device of ultraviolet spot light - Google Patents
A kind of high-precision precinct laser sintering method and device of ultraviolet spot light Download PDFInfo
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- CN107283829A CN107283829A CN201710470549.0A CN201710470549A CN107283829A CN 107283829 A CN107283829 A CN 107283829A CN 201710470549 A CN201710470549 A CN 201710470549A CN 107283829 A CN107283829 A CN 107283829A
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- 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
- B33Y10/00—Processes of additive manufacturing
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- 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
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Abstract
A kind of high-precision precinct laser sintering method and device of ultraviolet spot light, using ultraviolet laser, printer model is generated by computer, and pass through control software output signal, so as to control the motion of scanning galvanometer, laser is set to form spot light in moulding cylinder, so as to carry out powder sintered shaping；Device includes and computer is connected pre-heating system and power spreading device, computer and ultraviolet laser, scanning galvanometer connection；The present invention is small with spot diameter, and heat-affected zone is small, and photon energy is big, and machining accuracy is high, and Forming Quality is good, the advantages of rapidoprint scope is wide.
Description
Technical field
The present invention relates to increases material manufacturing technology field, and in particular to a kind of high-precision precinct laser sintering of ultraviolet spot light
Method and device.
Background technology
Precinct laser sintering technology (SLS) is a kind of increases material manufacturing technology fast-developing in recent years, is mainly used in machine
The numerous areas such as tool, Aero-Space, bioengineering, are related to a variety of powder body materials such as metal, ceramics, high molecular polymer.It is existing
Precinct laser sintering technology laser beam is pooled into the hot spot of a high-energy in processing plane, hot spot is controlled by software
Pointwise or progressive scan are carried out by certain path.The laser commonly used in SLS technologies mainly has carbon dioxide laser and light
Fibre laser.
It is main at present to be swashed from carbon dioxide during the constituency sinter molding using high molecular polymer as rapidoprint
Light device, this efficiency of laser is high, and power bracket is big, but spot diameter is big, and heat-affected zone is big, and shaping line width relatively designs chi
It is very little wide, it is impossible to reach the higher accuracy of manufacture.Optical fiber laser electrical efficiency is high, and Output of laser wavelength scope is wide, and stability is high,
But high molecular polymer is low to the absorption efficiency of this optical maser wavelength, therefore it is mainly used in the sinter molding of metal-powder.
For the relatively low high molecular polymer of fusing point, existing SLS technologies are unable to reach higher formed precision.
The content of the invention
In order to overcome the shortcoming of above-mentioned prior art, it is an object of the invention to provide a kind of high accuracy of ultraviolet spot light
Precinct laser sintering method and device, for the relatively low high molecular polymer of fusing point, can reach higher formed precision.
In order to achieve the above object, the technical scheme taken of the present invention is：
A kind of high-precision precinct laser sintering method of ultraviolet spot light, comprises the following steps：
1) threedimensional model of part is drawn in computer 1, it is more that generation after layered shaping is carried out to it by control software
The printer model of layer cross section；
2) according to the corresponding preheating temperature of different choice of material character, powder is heated by heater 2, led to
Excess temperature sensor 3 monitors powder surface temperature in real time；
3) lifting and the rolling of powdering roller 4 for powder cylinder 5 and moulding cylinder 6 are controlled by computer 1, on powder cylinder 5
Rise, moulding cylinder 6 declines, powdering roller 4 is rolled from for powder cylinder 5 to moulding cylinder 6, one layer of smooth powder is laid in moulding cylinder 6；
4) transmitting of ultraviolet laser 8 Ultra-Violet Laser, the powder surface focused on by scanning galvanometer 7 in moulding cylinder 6；
5) the printer model generation by the control software in computer 1 according to layering section and output signal, control are swept
The motion of galvanometer 7 is retouched, Ultra-Violet Laser is occurred optical path-deflecting, is sintered along the movement locus pointwise designed or line by line；
6) after this layer sintering is finished, the control software that powdering system is laid in new powder, computer 1 is cut according to next layer
The printer model generation in face and output signal simultaneously repeat above-mentioned sintering process, until whole part sintering is finished.
A kind of high-precision precinct laser sintering device of ultraviolet spot light, including with computer 1 connect pre-heating system and
Power spreading device, computer 1 and ultraviolet laser 8, scanning galvanometer 7 are connected.
Described computer 1 and its control software, are responsible for the opening and closing of control ultraviolet laser 8, and being responsible for will layering
The information of model after processing is converted into coherent signal to control the movement locus of scanning galvanometer 7, is responsible for opening for pre-heating system
Open and close, be responsible for the lay of progress powder during control 3D printing.
Described ultraviolet laser 8 launches the laser that wavelength is 150nm to 500nm, refers on the powdering layer edge of moulding cylinder
Determine path scanning, sinter powder.
Pass through the motion of the scanning galvanometer 7 described in control so that optical path-deflecting occurs for Ultra-Violet Laser, control Ultra-Violet Laser exists
Skew on X/Y plane.
Described pre-heating system include heater 2 and temperature sensor 3, heater 2 close to moulding cylinder, be responsible for into
Powder in type cylinder is heated, and temperature sensor 3 will monitor powder surface temperature in real time and by data feedback to computer 1
In, so as to adjust the power of heater 2 to ensure the temperature of powder.
Described power spreading device powdering roller 4, for powder cylinder 5 and moulding cylinder 6, in laser sintering and moulding cylinder 6 after processing plane,
Rise a thickness for powder cylinder 5, moulding cylinder 6 declines a thickness, and powdering roller 4 is supplied from rolling drive to moulding cylinder 6 for powder cylinder 5
Powder in powder cylinder 5 is deposited to moulding cylinder 6, and the powdering roller 4 of rotation, which is reached the limit of, returns to initial position behind position, flatten again
Powder in moulding cylinder 6.
Beneficial effects of the present invention are：
Compared with the constituency sintering technology of existing use carbon dioxide laser or optical fiber laser, the present invention is using purple
Outer laser, small with spot diameter, heat-affected zone is small, and photon energy is big, and machining accuracy is high, and Forming Quality is good, processing
The advantages of material ranges are wide.
Brief description of the drawings
Fig. 1 is the structural representation of apparatus of the present invention.
Embodiment
Present disclosure is further illustrated below with reference to drawings and examples.
Referring to Fig. 1, a kind of high-precision precinct laser sintering device of ultraviolet spot light, including it is pre- with the connection of computer 1
Hot systems and power spreading device, computer 1 and ultraviolet laser 8, scanning galvanometer 7 are connected.
Described computer 1 and its control software, are responsible for the opening and closing of control ultraviolet laser 8, and being responsible for will layering
The information of model after processing is converted into coherent signal to control the movement locus of scanning galvanometer 7, is responsible for opening for pre-heating system
Open and close, be responsible for the lay of progress powder during control 3D printing.
Described ultraviolet laser 8 launches the laser that wavelength is 150nm to 500nm, refers on the powdering layer edge of moulding cylinder
Determine path scanning, sinter powder.
Pass through the motion of the scanning galvanometer 7 described in control so that optical path-deflecting occurs for Ultra-Violet Laser, control Ultra-Violet Laser exists
Skew on X/Y plane.
Described pre-heating system include heater 2 and temperature sensor 3, heater 2 close to moulding cylinder, be responsible for into
Powder in type cylinder is heated, and temperature sensor 3 will monitor powder surface temperature in real time and by data feedback to computer 1
In, so as to adjust the power of heater 2 to ensure the temperature of powder.
Described power spreading device powdering roller 4, for powder cylinder 5 and moulding cylinder 6, in laser sintering and moulding cylinder 6 after processing plane,
Rise a thickness for powder cylinder 5, moulding cylinder 6 declines a thickness, and powdering roller 4 is supplied from rolling drive to moulding cylinder 6 for powder cylinder 5
Powder in powder cylinder 5 is deposited to moulding cylinder 6, and the powdering roller 4 of rotation, which is reached the limit of, returns to initial position behind position, flatten again
Powder in moulding cylinder 6.
A kind of high-precision precinct laser sintering method of ultraviolet spot light, comprises the following steps：
1) threedimensional model of part is drawn in computer 1, it is more that generation after layered shaping is carried out to it by control software
The printer model of layer cross section；
2) according to the corresponding preheating temperature of different choice of material character, powder is heated by heater 2, led to
Excess temperature sensor 3 monitors powder surface temperature in real time；
3) lifting and the rolling of powdering roller 4 for powder cylinder 5 and moulding cylinder 6 are controlled by computer 1, on powder cylinder 5
Rise, moulding cylinder 6 declines, powdering roller 4 is rolled from for powder cylinder 5 to moulding cylinder 6, one layer of smooth powder is laid in moulding cylinder 6；
4) transmitting of ultraviolet laser 8 Ultra-Violet Laser, the powder surface focused on by scanning galvanometer 7 in moulding cylinder 6；
5) the printer model generation by the control software in computer 1 according to layering section and output signal, control are swept
The motion of galvanometer 7 is retouched, Ultra-Violet Laser is occurred optical path-deflecting, is sintered along the movement locus pointwise designed or line by line；
6) after this layer sintering is finished, the control software that powdering system is laid in new powder, computer 1 is cut according to next layer
The printer model generation in face and output signal simultaneously repeat above-mentioned sintering process, until whole part sintering is finished.
Claims (4)
1. a kind of high-precision precinct laser sintering method of ultraviolet spot light, it is characterised in that comprise the following steps：
1) threedimensional model of part is drawn in computer (1), multilayer is generated after carrying out layered shaping to it by control software
The printer model in section；
2) according to the corresponding preheating temperature of different choice of material character, powder is heated by heater (2), passed through
Temperature sensor (3) monitors powder surface temperature in real time；
3) lifting and the rolling of powdering roller (4) for powder cylinder (5) and moulding cylinder (6) are controlled by computer (1), for powder cylinder
(5) rise, moulding cylinder (6) declines, powdering roller (4) is rolled from for powder cylinder (5) to moulding cylinder (6), one is laid in moulding cylinder (6)
The smooth powder of layer；
4) ultraviolet laser (8) transmitting Ultra-Violet Laser, the powder surface focused on by scanning galvanometer (7) in moulding cylinder (6)；
5) the printer model generation by the control software in computer (1) according to layering section and output signal, control scanning
The motion of galvanometer (7), makes Ultra-Violet Laser occur optical path-deflecting, is sintered along the movement locus pointwise designed or line by line；
6) after this layer sintering is finished, powdering system lays control software in new powder, computer (1) according to next layer cross section
Printer model generation and output signal and repeat above-mentioned sintering process, until whole part sintering is finished.
2. a kind of high-precision precinct laser sintering device of ultraviolet spot light, including the pre-heating system that is connected with computer (1) and
Power spreading device, it is characterised in that：Computer (1) and ultraviolet laser (8), scanning galvanometer (7) connection；
Described computer (1) and its control software, are responsible for the opening and closing of control ultraviolet laser (8), and being responsible for will layering
The information of model after processing is converted into coherent signal to control the movement locus of scanning galvanometer (7), is responsible for pre-heating system
Open and close, be responsible for the lay of progress powder during control 3D printing；
Described ultraviolet laser (8) launch wavelength be 150nm to 500nm laser, moulding cylinder powdering layer along specify
Path is scanned, and sinters powder；
Pass through the motion of the scanning galvanometer (7) described in control so that optical path-deflecting occurs for Ultra-Violet Laser, and control Ultra-Violet Laser is in XY
Skew in plane.
3. a kind of high-precision precinct laser sintering device of ultraviolet spot light according to claim 2, it is characterised in that：Institute
The pre-heating system stated includes heater (2) and temperature sensor (3), and heater (2) is responsible for moulding cylinder close to moulding cylinder
In powder heated, temperature sensor (3) will monitor powder surface temperature in real time and by data feedback to computer (1)
In, so as to adjust the power of heater (2) to ensure the temperature of powder.
4. a kind of high-precision precinct laser sintering device of ultraviolet spot light according to claim 2, it is characterised in that：Institute
The power spreading device powdering roller (4) stated, for powder cylinder (5) and moulding cylinder (6), in laser sintering and moulding cylinder (6) after processing plane, supply
Powder cylinder (5) rises a thickness, and moulding cylinder (6) declines a thickness, and powdering roller (4) for powder cylinder (5) to moulding cylinder (6) from rolling
Dynamic drive is deposited for the powder in powder cylinder (5) to moulding cylinder (6), and the powdering roller (4) of rotation is reached the limit of to be returned just behind position
Beginning position, the powder in moulding cylinder (6) is flattened again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710470549.0A CN107283829A (en) | 2017-06-20 | 2017-06-20 | A kind of high-precision precinct laser sintering method and device of ultraviolet spot light |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710470549.0A CN107283829A (en) | 2017-06-20 | 2017-06-20 | A kind of high-precision precinct laser sintering method and device of ultraviolet spot light |
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| CN107283829A true CN107283829A (en) | 2017-10-24 |
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| CN201710470549.0A Pending CN107283829A (en) | 2017-06-20 | 2017-06-20 | A kind of high-precision precinct laser sintering method and device of ultraviolet spot light |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107839218A (en) * | 2017-11-07 | 2018-03-27 | 陕西百普生医疗科技发展有限公司 | A kind of precinct laser vapor deposition method and device |
| CN110483064A (en) * | 2019-08-20 | 2019-11-22 | 深圳德智达科技有限公司 | A kind of 3D printing high solids content light sensitive ceramics raw material based on solid material Stereolithography, ceramic member and preparation method thereof |
| CN111016177A (en) * | 2019-12-09 | 2020-04-17 | 北京缔佳医疗器械有限公司 | Coloring method for information marks on three-dimensional printing rapid prototyping model |
| CN111452357A (en) * | 2020-04-30 | 2020-07-28 | 湖南华曙高科技有限责任公司 | Rapid printing method for three-dimensional object, rapid printing device and readable storage medium |
| CN111545755A (en) * | 2020-06-10 | 2020-08-18 | 常州英诺激光科技有限公司 | Method and device for 3D printing of copper and copper alloy by ultraviolet laser |
| CN113399664A (en) * | 2020-03-16 | 2021-09-17 | 大族激光科技产业集团股份有限公司 | Printing method and device for powder spreading type 3D printing device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101653827A (en) * | 2008-08-22 | 2010-02-24 | 松下电工株式会社 | Method and apparatus for producing a three-dimensionally shaped object, and three dimesionally shaped object |
| CN104827664A (en) * | 2015-01-28 | 2015-08-12 | 江汉大学 | 3D printer |
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2017
- 2017-06-20 CN CN201710470549.0A patent/CN107283829A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101653827A (en) * | 2008-08-22 | 2010-02-24 | 松下电工株式会社 | Method and apparatus for producing a three-dimensionally shaped object, and three dimesionally shaped object |
| CN104827664A (en) * | 2015-01-28 | 2015-08-12 | 江汉大学 | 3D printer |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107839218A (en) * | 2017-11-07 | 2018-03-27 | 陕西百普生医疗科技发展有限公司 | A kind of precinct laser vapor deposition method and device |
| CN110483064A (en) * | 2019-08-20 | 2019-11-22 | 深圳德智达科技有限公司 | A kind of 3D printing high solids content light sensitive ceramics raw material based on solid material Stereolithography, ceramic member and preparation method thereof |
| CN111016177A (en) * | 2019-12-09 | 2020-04-17 | 北京缔佳医疗器械有限公司 | Coloring method for information marks on three-dimensional printing rapid prototyping model |
| CN111016177B (en) * | 2019-12-09 | 2021-08-17 | 北京缔佳医疗器械有限公司 | Coloring method for information marks on three-dimensional printing rapid prototyping model |
| CN113399664A (en) * | 2020-03-16 | 2021-09-17 | 大族激光科技产业集团股份有限公司 | Printing method and device for powder spreading type 3D printing device |
| CN111452357A (en) * | 2020-04-30 | 2020-07-28 | 湖南华曙高科技有限责任公司 | Rapid printing method for three-dimensional object, rapid printing device and readable storage medium |
| CN111545755A (en) * | 2020-06-10 | 2020-08-18 | 常州英诺激光科技有限公司 | Method and device for 3D printing of copper and copper alloy by ultraviolet laser |
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Application publication date: 20171024 |
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