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Mostrar mensagens com a etiqueta fonte de alimentação. Mostrar todas as mensagens
Mostrar mensagens com a etiqueta fonte de alimentação. Mostrar todas as mensagens

terça-feira, 25 de julho de 2017

Injecção de Plástico em casa! E Mindsets em saldos, uma Fonte de Alimentação regulável, partilhem com AddToAny, e desenhem Engrenagens

Eis uma maneira de terem uma Fábrica de Injecção de plásticos na Oficina, para terem pequenas séries de objectos realmente realistas...
Usando uma Impressora 3D!
O "truque", é, para além de muita cabecinha ao desenhar os Moldes, uma Impressora Asiga, e a sua Resina especial, a Asiga FusionGRAY.
Leiam com toda a atenção, todo o atrigo, indo ao Link: 






Low-cost desktop injection moulding
Janie Barrett

Low-cost desktop injection moulding - here, Mitchell Brown from VERT Design, explains how they did it using Asiga's desktop 3D printing solution ...
Our product design company was engaged to develop a variation of a hose clip that is used on a high speed production line. The product works through the use of an integral hinge and flexible clipping geometry.
Traditionally we would test the design through the used of SLS 3D printed models, however, the results achieved were not accurate. We required the geometry to be proven in the actual production materials, which in this case was injection moulded polypropylene
Through the design phase, we developed multiple iterations. Eventually this was short-listed to two possible concepts. Producing a prototype tool in steel or aluminium would have cost many thousands of dollars and taken a minimum of 6 weeks. We turned to 3D printed tooling as it was faster and cheaper.










Só a página, é um espectáculo, mas estes artigos estão em Saldo, por isso, aproveitem, que esta quantidade de coisas boas, para Engenhocas, vai-se esgotar, e depois, é tarde demais:






CLEARANCE. NOT TO BE MISSED!...

See our range of Clearance items. Available whilst stocks last.
When they're gone, they're gone.
Making way for new and exciting ranges.











E eis mais uma Fonte de Alimentação que podem fazer em casa, cortesia deste engenhoso Engenhocas no Site Instructables.
Esta, tem como trunfos der de regulação contínua, tanto de Voltagem, como de Amperagem!
É bom.






How to Make a Bench Power Supply
deba168

A bench power supply is an extremely handy bit of kit to have around for electronics hobbyists, but they can be expensive when purchased from the market. In this Instructable, I will show you, how to make a variable lab bench power supply with a limited budget.It is a great DIY project for beginners as well as any one interested in Electronics.

https://www.instructables.com/id/DIY-Bench-Power-Supply/










Isto é porreiro, uma ferramenta para partilharem o que quiserem por toda a Net, e o que é melhor, é grátis.
Vejam todas as vantagens disto, no Site:







Share Anywhere

Share to any service, or add a custom service to share to. AddToAny gets people to the right destination to share or save your content, whether it's in a native app or on the web.
https://www.addtoany.com/








Isto é maravilhoso, não só porque é um bom Instructables para desenhar Engrenagens...
Mas também, com este Intructable, podem aprender como imprimir em 3D todas as peças mecânicas que quizerem!
Através deste catálogo de peças acessível ao programa Fusion 360:






The Easy Way to Design Gears in Fusion 360
Desktop Makes

One of the first things I ever made from a 3D printer was a gear. But it wasn't just any old gear. The beauty behind this gear was that it was a replacement part for the very printer that was making it. This still blows my mind to this day. I love printing gears and still get excited about this new world that 3D printers have opened up. The problem is that designing gears have always been a bit of a challenge for me. That is until I learned what I'm about to teach you.
In the last step I also include a video demonstrating the entire process.












quarta-feira, 9 de setembro de 2015

3D Router!!! E uma máquina 3D sem CNC, Uma Fonte de Alimentação, e Porcas nas peças

Isto resolve-vos uma incrível quantidade de problemas, com as Ferramentas que já têem em casa, e pouco mais, é mesmo algo de insidpensável, para muito Engenhocas...

Uma gigajoga que fura, fresa, corta em 2D, e esculpe em 3D, usando apenas Bitolas, e Moldes... 
Isto é muito, mas muito bom!



3D Router: When a CNC machine is overkill

Paoson Luthier 
The idea arose after dealing with the difficulties and loss of time in preparing for certain CNC jobs. Sometimes I spent more time preparing for the CNC than the work itself. With this manual router, you can make holes or mill very fast. A universal 43mm collet makes it very versatile and you can change the milling tool to drill very fast.
There are certainly lots of wooden router table and CNC router plans floating around in cyberspace. What makes this project noteworthy are the feature set and the cleverness of how it’s all put together and designed for maximum versatility. This router table can be used as a 3-axis drill press, sanding station, a 2D router, and you can do simple shapes 3D milling via a reference model. Using a series of accessories, you can also cut circles, straight-cut squares, and cut to a 2D reference model.
The uses of this tool are varied. I am a guitar maker and my plan consists of devising several templates of guitar bodies and necks to be made with the 3D Router, without switching on my CNC. Besides, it can also be used for other woodwork tasks. I have tried to make a design which can be easily built, with rather simple and cheap parts.
Overall dimensions: 800mm high, 740mm width and 700mm depth.
Useful dimensions: 425mm in X Axis, 535mm in Y axis and 185mm in Z axis. 









Transformar uma Placa numa espécie de tecido, flexível, e fácil de curvar, é o  que este Corte CNC faz, por isso, tomem nota desta maravilha, já há cortes que permitem a dobra numa direcção, mas este, é em duas direcções:



Super flexible double curvature surface - laser cut plywoodkofaktorlab 

Carl Friedrich Gauss distinguishes between three types of curved surfaces, single curved - neutral (cylindrical), and double curved - negative (hyperboloid) and positive (spherical).
Curved surfaces are very attractive, especially negative double curved surfaces, but also very complicated to perform. What’s interesting about them in constructive terms is the increase in stiffness and load capacity as the surface is bent in one and two directions.
In a small book DIGITAL Gehry Material Resistance Digital Construction (Bruce Lindsey, Bitkhäuser 2001) writes that if flat piece cost one dollar, single curvature piece cost two dollars, double curvature piece cost ten dollars. This is true for all materials wood, metal, plastic, glass, concrete ...
It is immediately clear why some engineers are crazy about double curved surfaces and are constantly trying to find a method that can simplify and cheapen the process.
From time to time I search the Internet on that matter. One day I stumbled upon the wooden book covers that can be done on a laser cutter, with interesting technical solution of the spine; wooden board is slit in such a way that can be bend like rubber. 
http://www.instructables.com/id/Super-flexible-duble-curvature-surface-laser-cut-p/






Este é, sem dúvida, o melhor Projecto para transformar Sucata de Computador numa Fonte de Alimentação, e uma que é regulável e uma ajuda valiosa para a Oficina:




Super recycled benchtop power supply

juaspo

Working with electronics you are bound to need different voltage sources for your projects. So having a good and reliable benchtop power supply is way, way, waaay easier and more convenient than having to combine batteries in different ways or trying to find a power adaptor that can deliver just that right amount of voltage.
Now, obviously you can easily get one of those pro made power supplies by trading a sh*t load of money for it. But in my opinion that is both less fun, easier, more safe and less recyclingy...(that should be a word) and also it costs more... and will make a less interesting instructable... unless you tend to review them...
Anyhow this is not going to be a full super detailed instructable on how to mod a PSU to a benchtop PS since there is a ton of those all around but rather give some tips and inspiration and show how I did mine. 
  








..E se uma simples Rosca se transforma numa dor-de-cabeça, para mandar imprimir em 3D, porque não usar uma Porca, que já tem Rosca?
E para não ter a Rosca solta, nem partir a peça, o melhor, é esta ideia completamente genial,
Usar calor para encaixar perfeitamente uma peça, aquecendo a porca um pouco, o que práticamente solda o plástico à porca... 




Making Custom Threaded Inserts (3D Printing)

PeterM13
Many times when you print a downloaded part, the fastener holes or hex recesses are too tight. Other times, the type or size fastener that the design requires is just not available, which happens a lot here on Maui. The Item pictured here is a spindle bracket to replace the motor on a ShapeOko CNC router. Since the fasteners on the original machine were metric fasteners, the new bracket was designed the same. The problem was that the 3" long clamp bolts were not available at all. The through holes were of the proper size to be able to accept a length of 10-24 TPI all thread. That meant I could substitute a hand-made bolt assembly for the designed fasteners, but the recess for the nuts on the back side were too small to accept the 10-24 nuts. My solution was to double nut the threaded shaft and use heat to insert the nuts into the recess forming an insert that had a threaded shaft attached.  




quinta-feira, 19 de maio de 2011

Um Instructable dum Lusófono

Está bem, é mesmo dum Brasileiro, mas "Lusófono" soa bem.

É a versão baratucha desta experiência, também dele,

A versão mais elaborada,
 A mais rápida e barara:

E o Instructable está aqui:
http://www.instructables.com/id/This-High-Voltage-Click-Clack-Toy-Rocks/
Porreiro!

domingo, 20 de fevereiro de 2011

Espuma de CNC!

Eis algo para vos pôr bem-dispostos....




...Depois, temos esta máquina CNC de gravar e cortar uma data de coisas:
The Phlatprinter 3 (patent pending) is an affordable, compact, CNC machine Kit specially designed for cutting foam and other sheet media.

The cabinet size is 41.5" X 15-5/8" X 17" but don't let the compact design fool you, the maximum cutting width is 27" and it is able to accept 2" thick material and cut 1 3/4"! We walk you through building your Phlatprinter, testing your electronics, and setting up your software through an easy to follow step by step build log video. We have done everything we can to keep the cost as low as possible and building and using your Phlatprinter as easy as possible.
http://www.phlatboyz.com/assets/images/FrontPagePIcs/Phlatprinter_Maincopy.png




Querem só um aparelho para cortar papel por Computador?


The New Craft Robo-Silhouette
Price: £199.99+VAT

Our Craft Robo-Silhouette works with XP,
Vista and Windows 7 too!

The new Craft Robo-Silhouette with it's new sleeker and more contemporary look replaces the older CC200-20 and the Carft Robo CC300-20

The Craft Robo-Silhouette is a compact cutting system which links up to your PC and enables you to cut a wide range of materials, including:-

Paper/Card (approximately 180-200gsm)*

Self-adhesive Vinyl for windows, cars etc.

T-Shirt Flex, Flock & Transfer Paper

Self-adhesive labels

The Craft Robo-Silhouette not only cuts but it can also perforate to create Pop Up Greeting Cards, and crease lines for making favour and gift boxes. With the Craft Robo-Silhouette, you can let you imagination run wild!

Don't be fooled by it's low price, we feel that the Craft Robo-Silhouette is worth a lot more.

The Craft Robo-Silhouette is often imitated but never equaled.

http://www.graphteccorp.com/craftrobo/


Mas, e se só quizerem ter uma máquina de cortar Esferovite aka, Isopor, em 5 Minutos?

quinta-feira, 3 de junho de 2010