ITUD20100197A1 - "LASER-RING: DEVICE FOR THE DISTRIBUTION OF THIN METALLIC POWDERS, FOR THE CREATION OF CURVED PRODUCTS, BY SELECTIVE LASER SINTERING TECHNIQUES (SELECTIVE LASER SINTERING - SLS)" - Google Patents
"LASER-RING: DEVICE FOR THE DISTRIBUTION OF THIN METALLIC POWDERS, FOR THE CREATION OF CURVED PRODUCTS, BY SELECTIVE LASER SINTERING TECHNIQUES (SELECTIVE LASER SINTERING - SLS)" Download PDFInfo
- Publication number
- ITUD20100197A1 ITUD20100197A1 IT000197A ITUD20100197A ITUD20100197A1 IT UD20100197 A1 ITUD20100197 A1 IT UD20100197A1 IT 000197 A IT000197 A IT 000197A IT UD20100197 A ITUD20100197 A IT UD20100197A IT UD20100197 A1 ITUD20100197 A1 IT UD20100197A1
- Authority
- IT
- Italy
- Prior art keywords
- selective laser
- laser sintering
- creation
- sls
- distribution
- Prior art date
Links
- 239000000843 powder Substances 0.000 title claims description 13
- 238000000034 method Methods 0.000 title description 10
- 238000000110 selective laser sintering Methods 0.000 title description 4
- 238000009826 distribution Methods 0.000 title description 3
- 239000000463 material Substances 0.000 claims description 9
- 230000007246 mechanism Effects 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 230000008018 melting Effects 0.000 claims description 2
- 238000002844 melting Methods 0.000 claims description 2
- 238000005245 sintering Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000008021 deposition Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 229910001111 Fine metal Inorganic materials 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/10—Processes of additive manufacturing
- B29C64/141—Processes of additive manufacturing using only solid materials
- B29C64/153—Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
-
- 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
- B22F12/30—Platforms or substrates
-
- 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
- B22F10/28—Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
-
- 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
Description
DESCRIZIONE del brevetto per invenzione industriale avente titolo: DESCRIPTION of the patent for industrial invention entitled:
"LASER-RING: dispositivo per la distribuzione di polveri metalliche sottili, per la realizzazione di prodotti curvi mediante sinterizzazione laser selettiva (selective laser sintering) ". "LASER-RING: device for the distribution of fine metal powders, for the production of curved products by selective laser sintering".
TESTO DELLA DESCRIZIONE TEXT OF THE DESCRIPTION
Questa invenzione ha per oggetto un meccanismo per la distribuzione delle polveri e successiva formazione del prodotto finito, mediante l'impiego della tecnologia basata sulla sinterizzazione laser selettiva (Selective Laser Sintering - nel seguito SLS). This invention relates to a mechanism for the distribution of powders and subsequent formation of the finished product, through the use of technology based on selective laser sintering (hereinafter SLS).
Tale tecnica fa parte della famiglia delle tecniche di prototipazione rapida (Rapid Prototyping - RP) che consentono di ottenere i prototipi o i prodotti finiti, per accrescimento (addizione e successiva aggregazione di materiale sotto forma di particelle, filamenti o strati) direttamente dal modello CAD, con tempi e costi decisamente inferiori rispetto ai prototipi e ai singoli manufatti prodotti con tecniche tradizionali. This technique is part of the family of rapid prototyping techniques (Rapid Prototyping - RP) which allow to obtain prototypes or finished products, by growth (addition and subsequent aggregation of material in the form of particles, filaments or layers) directly from the CAD model, with significantly lower times and costs compared to prototypes and single products produced with traditional techniques.
La SLS, consente di creare il prodotto finito, partendo da un materiale in polvere; nello specifico della presente invenzione, le polveri utilizzate saranno costituite dai materiali comunemente impiegati per la realizzazione di manufatti metallici. The SLS, allows to create the finished product, starting from a powder material; specifically of the present invention, the powders used will consist of the materials commonly used for the production of metal products.
Le modalità operative del processo sono suddivise nelle seguenti fasi: The operational methods of the process are divided into the following phases:
1. Uno strato di polvere viene depositato meccanicamente e pressato sulI' elevatore. La camera dove avviene la sinterizzazione (eventualmente mantenuta in atmosfera inerte) può essere portata a una temperatura superiore a quella ambiente (per minimizzare così l'energia richiesta al laser ed eventuali effetti dei cambiamenti di volume dovuti alla temperatura). 1. A layer of dust is mechanically deposited and pressed onto the elevator. The chamber where the sintering takes place (possibly kept in an inert atmosphere) can be brought to a temperature higher than the ambient one (to minimize the energy required by the laser and any effects of changes in volume due to temperature).
2. Il raggio laser sinterizza/fonde la polvere consolidando in maniera selettiva la sezione solo nei punti richiesti. Nei punti dove il laser colpisce, le particelle fondono anche solo parzialmente in modo da legarsi tra loro. 2. The laser beam sinters / melts the powder by selectively consolidating the section only at the required points. In the points where the laser hits, the particles fuse even only partially in order to bond with each other.
3. L'elevatore si abbassa di una quantità pari allo spessore dello strato e il processo si ripete fino alla costruzione completa del particolare. 3. The elevator is lowered by an amount equal to the thickness of the layer and the process is repeated until the complete construction of the part.
lJ particolare finito viene poi estratto e pulito dalla polvere che non à ̈ stata sinterizzata e che può essere recuperata per un uso successivo. The finished part is then extracted and cleaned from the dust which has not been sintered and which can be recovered for subsequent use.
I vantaggi di tale tecnologia sono noti e applicati sia per la produzione di prototipi, sia per la produzione di serie di piccolo o piccolissimo volume. C'à ̈ poi la possibilità di utilizzare una grande varietà di materiali (dai materiali polimerici a quelli metallici o ceramici) e di non prevedere alcun supporto per il particolare in lavorazione, poiché le parti a sbalzo sono sostenute dalla polvere non sinterizzata. The advantages of this technology are known and applied both for the production of prototypes and for the production of small or very small volumes. Then there is the possibility of using a large variety of materials (from polymeric materials to metal or ceramic ones) and of not providing any support for the workpiece, since the cantilevered parts are supported by unsintered powder.
Le tipologie di laser generalmente impiegate, sono laser aventi una potenza superiore ai lOW. The types of lasers generally used are lasers with a power higher than LOW.
quanto rigUarda la presente invenzione, essa si prefigge di realizzare un dispositivo per la di metallici; vista la sua specifica geometria, essa si rivolgerà soprattutto a particolari curvi quali anelli, elementi di catene o comunque a ogni altro particolare di forma toroidale, facendo ricorso alla tecnica SLS precedentemente descritta. as far as the present invention is concerned, it aims to provide a device for the metal plate; given its specific geometry, it will mainly address curved details such as rings, chain elements or any other toroidal-shaped details, using the previously described SLS technique.
N 1 ello specifico, . viene proposto un nuovo dispositivo per la deposizione della e la successiva formatura del particolare . N 1 specific ello,. a new device is proposed for the deposition of the and the subsequent forming of the detail.
Le dimensioni del meccanismo oggetto di questo brevetto, permettono l'impiego di minori quantitativi di polvere e quindi una conseguente riduzione dei costi. Infatti, i materiali solitamente impiegati in alcune industrie, possono essere materiali pregiati e costosi e, di conseguenza, una quantità minore di questi non può far altro che rappresentare una fonte di riduzione dei costi dell'intero processo. The dimensions of the mechanism object of this patent allow the use of smaller quantities of powder and therefore a consequent cost reduction. In fact, the materials usually used in some industries can be valuable and expensive materials and, consequently, a smaller quantity of these can only represent a source of cost reduction of the entire process.
Si fa riferimento al disegno riportato nella Tavola 1: la descrizione che segue à ̈ a titolo esemplificativo e non limitativo. Reference is made to the drawing shown in Table 1: the following description is by way of non-limiting example.
Il dispositivo à ̈ costituito da una guida curva (O), nella quale sono ricavare le sedi per l'alloggiamento dei rulli mobili (1) che possono essere azionati mediante motori. All'interno della suddetta guida, grazie alla rotazione dei rulli, viene fatto scorrere l'elevatore (di sezione circolare) (2) il quale può compiere una corsa pari a 1/8 di cerchio. The device consists of a curved guide (O), in which the seats for housing the mobile rollers (1) which can be operated by motors are obtained. Thanks to the rotation of the rollers, the elevator (of circular section) (2) is made to slide inside the aforesaid guide and can perform a stroke equal to 1/8 of a circle.
All'inizio del processo, l'elevatore si troverà in posizione completamente sollevata, pronto a ricevere il primo strato di polvere da sinterizzare; successivamente verrà abbassato per consentire la deposizione degli strati successivi sino al completo raggiungimento della forma desiderata. Agli estremi dell'elevatore (in posizioni cioà ̈ diametralmente opposte), viene inoltre depositata della polvere di materiali basso fondenti che costituirà il supporto del particolare da realizzare e, allo stesso tempo, che consentirà la movimentazione della piattaforma. At the beginning of the process, the elevator will be in the completely raised position, ready to receive the first layer of powder to be sintered; subsequently it will be lowered to allow the deposition of subsequent layers until the desired shape is completely achieved. At the ends of the elevator (ie in diametrically opposite positions), powder of low melting materials is also deposited which will form the support of the part to be made and, at the same time, which will allow the platform to be moved.
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITUD2010A000197A IT1403025B1 (en) | 2010-11-05 | 2010-11-05 | "LASER-RING: DEVICE FOR THE DISTRIBUTION OF THIN METALLIC POWDERS, FOR THE CREATION OF CURVED PRODUCTS, BY SELECTIVE LASER SINTERING TECHNIQUES (SELECTIVE LASER SINTERING - SLS)" |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITUD2010A000197A IT1403025B1 (en) | 2010-11-05 | 2010-11-05 | "LASER-RING: DEVICE FOR THE DISTRIBUTION OF THIN METALLIC POWDERS, FOR THE CREATION OF CURVED PRODUCTS, BY SELECTIVE LASER SINTERING TECHNIQUES (SELECTIVE LASER SINTERING - SLS)" |
Publications (2)
Publication Number | Publication Date |
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ITUD20100197A1 true ITUD20100197A1 (en) | 2012-05-06 |
IT1403025B1 IT1403025B1 (en) | 2013-09-27 |
Family
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Family Applications (1)
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ITUD2010A000197A IT1403025B1 (en) | 2010-11-05 | 2010-11-05 | "LASER-RING: DEVICE FOR THE DISTRIBUTION OF THIN METALLIC POWDERS, FOR THE CREATION OF CURVED PRODUCTS, BY SELECTIVE LASER SINTERING TECHNIQUES (SELECTIVE LASER SINTERING - SLS)" |
Country Status (1)
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IT (1) | IT1403025B1 (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6824714B1 (en) * | 1999-08-20 | 2004-11-30 | Eos Gmbh Electro Optical Systems | Device and method for generative production of a three-dimensional object |
-
2010
- 2010-11-05 IT ITUD2010A000197A patent/IT1403025B1/en active
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6824714B1 (en) * | 1999-08-20 | 2004-11-30 | Eos Gmbh Electro Optical Systems | Device and method for generative production of a three-dimensional object |
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Publication number | Publication date |
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IT1403025B1 (en) | 2013-09-27 |
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