CN105904732A - Guiding device and implementation method for fiber orientation in selective laser sintering of fiber composite powder - Google Patents
Guiding device and implementation method for fiber orientation in selective laser sintering of fiber composite powder Download PDFInfo
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- CN105904732A CN105904732A CN201610354604.5A CN201610354604A CN105904732A CN 105904732 A CN105904732 A CN 105904732A CN 201610354604 A CN201610354604 A CN 201610354604A CN 105904732 A CN105904732 A CN 105904732A
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- powder
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- sintering
- pectinate
- guide post
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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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- 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
- B33Y70/00—Materials specially adapted for additive manufacturing
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Powder Metallurgy (AREA)
Abstract
The invention discloses a guiding device and an implementation method for fiber orientation in selective laser sintering of fiber composite powder. The guiding device for the fiber orientation comprises a powder laying roller, a horizontal bracket, a multistage comb-like fiber guiding rod and a rotating platform, wherein the multistage comb-like fiber guiding rod is fixed on the horizontal bracket and is adjacent to the powder laying roller; and the rotating platform is arranged in a forming cylinder. The implementation method for the fiber orientation comprises the following steps of during powder laying, effectively guiding fibers to be distributed in the moving direction of the powder laying roller under a common action of the comb-like fiber guiding rod and the powder laying roller; after sintering a layer, driving a sintered sample to rotate by a certain angle by means of the rotating platform; and laying powder again, and then resetting the rotating platform for sintering next layer, and continuously repeating the process. According to the guiding device and the implementation method disclosed by the invention, the structure is simple; the arrangement of the fibers in a sample sintering layer in different directions can be effectively controlled; and the problem of aeolotropism of a current fiber composite powder material sintering sample is effectively solved.
Description
Technical field
The invention belongs to selective laser sintering field, be specifically related to guider and the implementation of a kind of fibre orientation in fiber composite powder selective laser sintering.
Background technology
Selective laser sintering (Selective Laser Sintering, it is called for short SLS) it is the rapid shaping technique being widely used at present, its moulding process principle is: add man-hour, first powder is preheating to the temperature of slightly less than its fusing point, is then paved by powder under the effect of cylinder；Laser beam selectively sinters according to layering cross section information under the control of the computer, one layer complete after carry out next layer of sintering again, remove unnecessary powder after all having sintered, then obtain printed part.The features such as this technology has manufacturing process simple, and degree of flexibility is high, and material selection range is wide, utilization rate is high, low cost, and shaping speed is fast, are paid attention to by the most widely.
SLS technology selection at present is relatively broad, including: nylon, wax, ABS, resin wrap sand, polycarbonate, metal and ceramic powders etc..As a example by most widely used nylon powder material, after laser sintered, the intensity of profiled member is relatively low, and main cause is that its quality is loose, density is relatively low.For improving the intensity of profiled member, researcher employing powder adds the reinforcements such as linear fiber and improves the intensity of profiled member.But prior art and method still can not effectively control fibrous material orientation arrangement in the powder.As shown in Figure 1, under the horizontal movement effect of cylinder, fiber is paved gradually in paving bisque, and cause most fibre orientation to be arranged along cylinder horizontal movement direction, the fiber orientation distribution of additive method is the most less, thus it is best to directly results in the mechanical property in cylinder horizontal movement direction of the sample after sintering, and much larger than the mechanical property in other directions, thus limit the fibre reinforced materials further application in selective laser sintering.
Summary of the invention
In order to solve the problems referred to above, the present invention provides guider and the implementation of a kind of fibre orientation in fiber composite powder selective laser sintering.
Patent of the present invention the technical scheme is that a kind of guider of fibre orientation in fiber composite powder selective laser sintering, it is characterised in that includes spreading powder cylinder, horizontal tray, multistage pectinate fibers guide post and rotation platform；Described multistage pectinate fibers guide post is fixed on described horizontal tray and adjacent with described paving powder cylinder；Described rotation platform is arranged in moulding cylinder.
Above-mentioned in fiber composite powder selective laser sintering in the guider of fibre orientation, described multistage pectinate fibers guide post is divided into three grades, all includes prerotation vane and connecting rod: about 20 times fiber diameter of spacing between prerotation vane described in first order pectinate fibers guide post are also fixed in described connecting rod；About 10 times fiber diameter of spacing between prerotation vane described in the pectinate fibers guide post of the second level are also fixed in described connecting rod；About 5 times fiber diameter of spacing between prerotation vane described in third level pectinate fibers guide post are also fixed in described connecting rod.
Above-mentioned in fiber composite powder selective laser sintering in the guider of fibre orientation, described horizontal tray under the migration of described paving powder cylinder along carriage rail horizontal movement, three square openings it are provided with on horizontal tray, it is used for assembling described multistage pectinate fibers guide post, and is positioned by holding screw.
Above-mentioned in fiber composite powder selective laser sintering in the guider of fibre orientation, described rotation platform is arranged in moulding cylinder, and rotation platform is rotated by driven by motor worm-and-wheel gear；Wherein, the worm gear of described worm-and-wheel gear is connected by spline pair with the push rod of described rotation platform, and worm screw is connected with described electric machine main shaft.
A kind of implementation that fibre orientation guides in fiber composite powder selective laser sintering, specifically comprises the following steps that
(1) laying fiber composite powder in powder feeding cylinder in advance, ejected by composite powder, when spreading powder, acted on by pectinate fibers guide post and the common of paving powder cylinder, arranges in the effective direction guiding fiber to move along paving powder cylinder；
(2) after sintering one layer, motor drives the worm-and-wheel gear immediately below moulding cylinder that platform is rotated and rotates, rotation platform drives sintered specimen to rotate a certain angle simultaneously, again spread powder, then rotation platform resets, realize the fiber in sintered powder is become different directions ordered arrangement, carry out next layer of sintering；
(3) constantly repeat step (2), until all layers all complete sintering, finally obtain sintered specimen.
Accompanying drawing explanation
Fig. 1 is the fiber orientation distribution schematic diagram of prior art.
Fig. 2 is the structural representation of apparatus of the present invention.
Fig. 3 is the structural representation of multistage pectinate fibers guide post in Fig. 2.
Fig. 4 is rotation platform and the structural representation of worm-and-wheel gear in Fig. 2.
Detailed description of the invention
See Fig. 2, disclosed by the invention in fiber composite powder selective laser sintering the guider of fibre orientation be mainly made up of paving powder cylinder 4, horizontal tray 3, carriage rail 13, multistage pectinate fibers guide post (first order pectinate fibers guide post 7, second level pectinate fibers guide post 6, third level pectinate fibers guide post 5), rotation platform 9, worm-and-wheel gear 10 and motor 11.
See Fig. 2, Fig. 3 and Fig. 4, the implementation that the fibre orientation in fiber composite powder selective laser sintering of the present invention guides, specific as follows:
(1) be provided with three square openings on the horizontal tray 3 described in, be used for assembling described multistage pectinate fibers guide post, and positioned by holding screw 2, horizontal tray 3 under the migration of described paving powder cylinder 4 along carriage rail 13 horizontal movement.Powder feeding cylinder 8 rises certain distance, moulding cylinder 12 declines certain distance, powder is sent, multistage pectinate fibers guide post moves together with X-direction with paving powder cylinder 4, after the unified also ordered arrangement of fibre orientation that multistage pectinate fibers guide post will be laid in sintered powder in advance, powder is compacted by paving powder cylinder 4, and the laser beam 14 then utilizing laser aid 1 to send carries out ground floor sintering to above-mentioned powder；
(2) worm gear of described worm-and-wheel gear 10 push rod bottom rotation platform 9 is combined by spline pair, worm screw is connected with motor 11 main shaft, powder feeding cylinder 8 rises certain distance again, moulding cylinder 12 declines certain distance, rotation platform 9 is moving simultaneously along Y direction, motor 11 drives worm-and-wheel gear 10 to move, rotation platform 9 is rotated a certain angle, again after paving powder, motor 11 inverts, rotation platform 9 is resetted, realize becoming different directions to arrange the fiber being laid in advance in sintered powder, then the laser beam 14 utilizing laser aid 1 to send carries out next layer of sintering to above-mentioned powder；
(3) continuous repeat the above steps (2), until all of sinter layer all completes sintering, finally obtains sintered specimen.
Claims (5)
1. the guider of fibre orientation in fiber composite powder selective laser sintering, it is characterised in that include spreading powder cylinder, horizontal tray, multistage pectinate fibers guide post and rotation platform；Described multistage pectinate fibers guide post is fixed on described horizontal tray and adjacent with described paving powder cylinder；Described rotation platform is arranged in moulding cylinder.
The guider of fibre orientation in fiber composite powder selective laser sintering the most according to claim 1, it is characterized in that, described multistage pectinate fibers guide post is divided into three grades, all includes prerotation vane and connecting rod: about 20 times fiber diameter of spacing between prerotation vane described in first order pectinate fibers guide post are also fixed in described connecting rod；About 10 times fiber diameter of spacing between prerotation vane described in the pectinate fibers guide post of the second level are also fixed in described connecting rod；About 5 times fiber diameter of spacing between prerotation vane described in third level pectinate fibers guide post are also fixed in described connecting rod.
The guider of fibre orientation in fiber composite powder selective laser sintering the most according to claim 1, it is characterized in that, described horizontal tray under the migration of described paving powder cylinder along carriage rail horizontal movement, three square openings it are provided with on horizontal tray, it is used for assembling described multistage pectinate fibers guide post, and is positioned by holding screw.
The guider of fibre orientation in fiber composite powder selective laser sintering the most according to claim 1, it is characterised in that described rotation platform is arranged in moulding cylinder, and rotation platform is rotated by driven by motor worm-and-wheel gear；Wherein, the worm gear of described worm-and-wheel gear is connected by spline pair with the push rod of described rotation platform, and worm screw is connected with described electric machine main shaft.
5. the implementation that fibre orientation guides in fiber composite powder selective laser sintering, specifically comprises the following steps that
(1) laying fiber composite powder in powder feeding cylinder in advance, ejected by composite powder, when spreading powder, acted on by pectinate fibers guide post and the common of paving powder cylinder, arranges in the effective direction guiding fiber to move along paving powder cylinder；
(2) after sintering one layer, motor drives the worm-and-wheel gear immediately below moulding cylinder that platform is rotated and rotates, rotation platform drives sintered specimen to rotate a certain angle simultaneously, again spread powder, then rotation platform resets, realize becoming the fiber in sintered powder different directions ordered arrangement, then carry out next layer of sintering；
(3) constantly repeat step (2), until all of sinter layer all completes sintering, finally obtain sintered specimen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610354604.5A CN105904732B (en) | 2016-05-26 | 2016-05-26 | A kind of guider and implementation for being used for fiber-wall-element model in fiber composite powder selective laser sintering |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610354604.5A CN105904732B (en) | 2016-05-26 | 2016-05-26 | A kind of guider and implementation for being used for fiber-wall-element model in fiber composite powder selective laser sintering |
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| Publication Number | Publication Date |
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| CN105904732A true CN105904732A (en) | 2016-08-31 |
| CN105904732B CN105904732B (en) | 2017-12-05 |
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| CN201610354604.5A Expired - Fee Related CN105904732B (en) | 2016-05-26 | 2016-05-26 | A kind of guider and implementation for being used for fiber-wall-element model in fiber composite powder selective laser sintering |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108297401A (en) * | 2017-01-13 | 2018-07-20 | 通用汽车环球科技运作有限责任公司 | Powder bed emerging system with point and sector scanning laser beam |
| CN108327257A (en) * | 2018-05-03 | 2018-07-27 | 湘潭大学 | A kind of roller bench and implementation arranged for fiber alignment in selective laser sintering powdering |
| CN109397691A (en) * | 2017-08-16 | 2019-03-01 | Cl产权管理有限公司 | For adding type manufacture the method for three-dimension object |
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| DE3011173A1 (en) * | 1980-03-22 | 1981-10-01 | Bühler-Miag GmbH, 3300 Braunschweig | SCREENING MACHINE FOR CEREALS AND OTHERS GRAIN GOODS |
| CN1911638A (en) * | 2006-08-25 | 2007-02-14 | 哈尔滨工业大学 | Speading head device of fiber spreading equipment |
| CN102442546A (en) * | 2011-09-09 | 2012-05-09 | 西北有色金属研究院 | Powder spreading device for rapid forming equipment |
| US20130186558A1 (en) * | 2011-09-23 | 2013-07-25 | Stratasys, Inc. | Layer transfusion with heat capacitor belt for additive manufacturing |
| CN203470903U (en) * | 2013-07-31 | 2014-03-12 | 济南大学 | Quick forming powder spreading device |
| CN203635913U (en) * | 2013-12-10 | 2014-06-11 | 华南理工大学 | Powder spreading device of SLM equipment |
| CN203863019U (en) * | 2014-05-26 | 2014-10-08 | 华南理工大学 | Stainless steel sheet alternating type powder laying device |
| CN104498863A (en) * | 2015-01-09 | 2015-04-08 | 北京工业大学 | Fiber hairbrush scraper |
| US20150183158A1 (en) * | 2013-12-02 | 2015-07-02 | SLM Solutions Group AG | Apparatus and method for producing three-dimensional work pieces with a radiation detection device |
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2016
- 2016-05-26 CN CN201610354604.5A patent/CN105904732B/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3011173A1 (en) * | 1980-03-22 | 1981-10-01 | Bühler-Miag GmbH, 3300 Braunschweig | SCREENING MACHINE FOR CEREALS AND OTHERS GRAIN GOODS |
| CN1911638A (en) * | 2006-08-25 | 2007-02-14 | 哈尔滨工业大学 | Speading head device of fiber spreading equipment |
| CN102442546A (en) * | 2011-09-09 | 2012-05-09 | 西北有色金属研究院 | Powder spreading device for rapid forming equipment |
| US20130186558A1 (en) * | 2011-09-23 | 2013-07-25 | Stratasys, Inc. | Layer transfusion with heat capacitor belt for additive manufacturing |
| CN203470903U (en) * | 2013-07-31 | 2014-03-12 | 济南大学 | Quick forming powder spreading device |
| US20150183158A1 (en) * | 2013-12-02 | 2015-07-02 | SLM Solutions Group AG | Apparatus and method for producing three-dimensional work pieces with a radiation detection device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108297401A (en) * | 2017-01-13 | 2018-07-20 | 通用汽车环球科技运作有限责任公司 | Powder bed emerging system with point and sector scanning laser beam |
| CN109397691A (en) * | 2017-08-16 | 2019-03-01 | Cl产权管理有限公司 | For adding type manufacture the method for three-dimension object |
| CN109397691B (en) * | 2017-08-16 | 2021-11-05 | Cl产权管理有限公司 | Method for additive manufacturing of three-dimensional objects |
| CN108327257A (en) * | 2018-05-03 | 2018-07-27 | 湘潭大学 | A kind of roller bench and implementation arranged for fiber alignment in selective laser sintering powdering |
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| CN105904732B (en) | 2017-12-05 |
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