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i workflow dei proceSSi<br />

Sottrattivi-additivi ibridi<br />

I processi sottrattivi sono spesso necessari per migliorare<br />

la finitura delle superfici e l’accuratezza di alcune<br />

funzioni sulle parti fabbricate in modalità additiva. Per<br />

sostenere tali processi, deve essere aggiunto al progetto<br />

del materiale extra, creando una geometria più ampia<br />

che viene chiamata “near-net shape” (di forma quasi<br />

perfetta). Oggi, Netfabb include funzionalità di modeling<br />

e di progettazione near-net shape basate sulla tecnologia<br />

Autodesk (ex Delcam) PowerShape.<br />

Questa nuova funzionalità di produzione ibrida permette<br />

agli utenti di mantenere i modelli in forma solida e di beneficiare<br />

di strumenti di modellazione solida allineati ai<br />

workflow CAM. Inoltre, permette ai produttori di avere<br />

sott’occhio il modello solido originale e monitorare con<br />

semplicità la forma near-net proprio perché creata per abilitare<br />

i processi sottrattivi. Grazie a una <strong>maggio</strong>re visibilità<br />

del modello originale e alla funzionalità near-net shape,<br />

Netfabb apre un workflow connesso tra le attività di preparazione<br />

alla costruzione e quelle di post-elaborazione.<br />

Stampa 3d multi-teStina<br />

collaborativa<br />

In questo importante aggiornamento è inclusa l’innovativa<br />

tecnologia di controllo di Project Escher, per potenziare<br />

le macchine con testine di stampa multiple basate sull’estrusione<br />

che lavorano insieme per stampare una singola<br />

parte. Questo processo collaborativo rende più dettagliata<br />

e veloce la stampa di parti in 3D su scala industriale. In<br />

linea con l’obiettivo di portare innovazione nel settore additive,<br />

Autodesk rende accessibili in modalità open source<br />

le specifiche hardware e software necessarie per creare<br />

macchine con questa nuova funzionalità di stampa 3D<br />

multi-testina collaborativa. In questo modo, i vendor hardware<br />

potranno creare stampanti multi-testina che possono<br />

stampare le parti molto più rapidamente rispetto alle<br />

stampanti a singola testina tradizionali.<br />

un’unica Soluzione Software<br />

“I nuovi strumenti di produzione, ottimizzazione e simulazione<br />

integrati in Netfabb sono molto interessanti<br />

e siamo lieti di collaborare con Autodesk per fornire ai<br />

a complete additive<br />

maNufacturiNg solutioN<br />

Subtractive and additive manufacturing technologies,<br />

Pan Computing and Project Escher, have been integrated<br />

into Netfabb, the 3D printing software by Autodesk.<br />

Autodesk recently improved Netfabb to turn it into an<br />

end-to-end solution for additive manufacturing. The<br />

company upgraded the software with simulation, hybrid<br />

production and collaborative multi-head 3D printing functions.<br />

Thanks to these innovations Netfabb has become<br />

a complete solution for additive manufacturing, allowing<br />

users to test, optimize, prepare and 3D-print quality marketable<br />

products.<br />

Autodesk Netfabb allows additive manufacturing professionals<br />

to move efficiently from CAD design to the finished<br />

item. By means of the integrated software for additive<br />

manufacturing and design, Netfabb provides valuable information<br />

allowing companies - large and small - to optimize<br />

the process of choosing materials and simulations to<br />

validate the creation strategies and optimize the projects.<br />

“Netfabb is not just easy to use, but it carries out the best<br />

part of heavy weight lifting work for the preparation of<br />

models to be printed in 3D”, Said Dan Ko, Strategic Initiatives<br />

Lead for Shapeways, commented. “Netfabb optimizes<br />

the problem-solving process of frequent issues relative to<br />

3D printing files for additive manufacturing. If we did not<br />

have Netfabb to automate most of the file preparation process,<br />

each production would require much more work and<br />

time”.<br />

With this important update, users have new tools available<br />

to be more innovative and competitive in the additive<br />

manufacturing and 3D printing sectors. New features include:<br />

cloud-based simulation, hybrid subtractive-additive<br />

processes, multi-head collaborative 3D printing.<br />

Let us now examine in greater detail these characteristics.<br />

Cloud-based simulation<br />

The use of metal additive manufacturing has always been<br />

slow in spreading due to the lack of predictability in the<br />

manufacturing process, as well as the high repetition<br />

costs. Netfabb’s simulation, which is based on technology<br />

obtained from Pan Computing, allows clients to foresee<br />

and regulate deformation, so that the parts designers and<br />

production engineers may optimize the projects and reduce<br />

the number of repetitions needed to obtain reliable results<br />

in the production process.<br />

the workflow of the hybrid<br />

subtraCtive-additive proCesses<br />

Subtractive processes are often necessary to improve surface<br />

finishing and the accuracy of some functions in parts<br />

manufactured using additive methods. In order to support<br />

these processes, extra material must be added to the project,<br />

creating a broader geometry called “near-net shape”<br />

(an almost perfect shape).<br />

Today, Netfabb includes near-net shape modeling and design<br />

functions based on the (formerly Delcam) Autodesk<br />

technology, PowerShape.<br />

This new hybrid production feature allows users to keep<br />

the models in their solid form and benefit from solid mod-<br />

APPLICAZIONI LASER - PubliTec<br />

The Additive Journal <strong>maggio</strong> giugno 2017 <strong>57</strong>

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