Prusa Mendel/pt
|
English • العربية • български • català • čeština • Deutsch • Ελληνικά • español • فارسی • français • hrvatski • magyar • italiano • română • 日本語 • 한국어 • lietuvių • Nederlands • norsk • polski • português • русский • Türkçe • українська • 中文（中国大陆） • 中文（台灣） • עברית • azərbaycanca • |
Release status: working
| Description | Prusa Mendel is a simpler remix of normal Mendel.
|
| License | |
| Author | |
| Contributors | |
| Based-on | |
| Categories | |
| CAD Models | |
| External Link |
OBS: essa página esta sendo traduzida aos poucos da versão original em inglês, por isso você irá ver partes escritas em inglês no meio da mesma.
- Se você for construir essa máquina utilizando o sistema de medidas inglês/americano SAE(imperial),veja também este artigoSAE Prusa Mendel.
Prusa Mendel é o modelo Ford T das impressoras 3D.
Assim como o modelo T, a Prusa Mendel traz melhorias em relação ao formato anterior deixando sua fabricação mais ágil. A Prusa Mendel é uma reedição simplificada do modelo Mendel original. Por padrão, ela usa mancais impressos, ao invés dos rolamentos normalmente usados, embora existam outras opções de substituição de baixo custo como os rolamentos lineares lm8uu e outros tipos de rolamentos ou mancais de baixo custo disponíveis no mercado. A versão atual utiliza três rolamentos 608 ao todo, um para o eixo X e dois para o eixo Y. Os rolamentos 624 não são mais usados.
O principal objetivo da Prusa é a de ser a mais objetiva e simples impressora 3D que possa ser construida.
- É muito simples de construí-la.
- É muito simples modifica-la.
- É muito simples imprimi-la para seus amigos.
- É muito simples consertá-la.
Devido a sua pouca complexidade, a Prusa Mendel pode ser considerada algo feito ao vivo. Ela é atualizada a todo momento. Esta é uma característica rara mas ela deveria ser a norma. Nós estamos vivendo ela, então nós não nos preoucupamos se ela fica um pouco diferente a cada momento; nossa impressora imprimir essas diferenças ao mesmo tempo em que surgem ;-)
Contents
<videoflash>tyVM3-v84I0</videoflash>
Desenvolvimento
O histórico do desenvolvimento da Prusa Mendel está hospedado no sítio github: http://github.com/prusajr/PrusaMendel.
Você pode acompanhar a sequência de alterações em Changelog.
Você pode inscrever-se no github gratuitamente e ingressar no projeto começando a trabalhar nele.
História
Lista de Materiais
Peças Impressas
| Quantity | Description | Type | Comments | Diagram |
|---|---|---|---|---|
| 2 | coupling | RP | stl[[1]] | 
|
| 3 | endstop-holder | RP | stl[[2]] | 
|
| 1 | x-carriage | RP | stl[[3]] | 
|
| 1 | x-end-idler | RP | stl[[4]] | 
|
| 1 | x-end-motor | RP | stl[[5]] | 
|
| 1 | y-motor-bracket | RP | 
| |
| 2 | z-motor-mount | RP | stl[[6]] | 
|
| 4 | belt-clamp | RP | stl[[7]] | 
|
| 8 | bar-clamp | RP | 
| |
| 2 | rod-clamp | RP | 
| |
| 2 | pulley | RP | 
| |
| 4 | frame-vertex with foot | RP | 
| |
| 2 | frame-vertex | RP | 
| |
| 12 | pla-bushing | RP-PLA | check your build file, the file makes either 4 or 12 | 
|
Peças Não Impressas ("vitaminas")
Note que peças adicionais são necessárias para o extrusor, entretanto algumas das peças do extrusor estão incluídas na tabela abaixo.
| Quantity | Description | Type | Comments |
|---|---|---|---|
| 83 | M8 nut | Fastener | Buy a 100-pack to be on the safe side. 
|
| 93 | M8 washer | Fastener | Buy a 100-pack to be on the safe side. |
| 6 | M8×30 mudguard / fender washer | Fastener | |
| 2 | M4×20 bolt | Fastener | To mount the extruder |
| 2 | M4 nut | Fastener | To mount the extruder |
| 2 | M4 washer | Fastener | To mount the extruder |
| 22 | M3×10 bolt | Fastener | |
| 16 | M3×25 bolt | Fastener | Or eight M3×25 bolt plus eight M3x20 bolts. The M3x25 bolts are too long for the recent Prusa z-motor-holder and rod-clamp, and also for the Z motor couplings. See Section 8, steps 4 and 13 for details. |
| 4 | M3×40 bolt | Fastener | |
| 70 | M3 washer | Fastener | |
| 40 | M3 nut | Fastener | 8 optionally locknut / stop nut / nyloc |
| 2 | M3 grub screw / set screw | Fastener | M3x8 seems about ideal but anything 6mm or longer should do. If these are hard to get, additional M3×10 bolts will do the job instead. |
| 3 | 608 roller skate / inline skate / skateboard bearing | Bearings | You don't need to ask for a "608 bearing" at a skate shop, just ask for wheel bearings. |
| 4 | ballpoint pen springs | Spring | To fit over M3 bolts. Ballpoint pens are a common, cheap source of suitable springs. They are about 25mm long and compress to about 10mm. |
| 6 | M8×370mm | Threaded rod | 3 per side Note: The threaded rods can be cut from larger 6x1m pieces (see Threaded Rod Cut Order below). |
| 4 | M8×294mm | Threaded rod | front / rear |
| 3 | M8×440mm | Threaded rod | top / bottom |
| 2 | M8×210mm | Threaded rod | Z-leadscrew |
| 1 | M8×50mm | Threaded rod | or M8x30 or longer bolt for X idler. Take care: if the bolt is too long, it may not be threaded along a sufficient length |
| 2 | 8mm×420mm | Smooth rod | X-bar Note: 304 Stainless Steel or A2 Tool Steel are recommended for smooth rods as it can help to prevent friction from rust and manufacturing (straightness) standards are higher. Rust issues can be prevented on the normal steel rods by maintaining a coat of oil. The smooth rods can also be cut from larger 3x1m pieces (see Smooth Rod Cut Order below). |
| 2 | 8mm×406mm | Smooth rod | Y-bar |
| 2 | 8mm×350mm | Smooth rod | Z-bar |
| 1 | 225mm×225mm print top plate | Thick Sheet | |
| 1 | 140mm×225mm print bottom plate | Thick Sheet | Note: The Prusa Iteration 2 design does not use a print bottom plate. |
| 1 | 840mm×5mm T5 pitch timing belt | Belt | Y axis |
| 1 | 900mm×5mm T5 pitch timing belt | Belt | X axis |
| 5 | NEMA 17 bipolar stepper motor | Stepper | Be sure to get ones with at least 20mm of shaft length. Shorter shafts require modifications to the X pulley assembly and Z motor couplers. One of the five motors, for use with the extruder, should be capable of creating a holding torque of at least 40Ncm, at the very least. |
| 50 | small cable binder / ziptie | Misc | |
| 1 | Wade's Geared Extruder | for 1.75mm filament RepRap Universal Mini Extruder; or any other compatible extruder for either | |
| 1 | Electronics + endstops | This can be RAMPS, Sanguinololu, Gen6, Gen7, Gen3, or any other Mendel compatible electronics. Endstops are either optical switches or microswitches (Recommended), and you need three, one for each of the X, Y, Z axes. |
| Quantity | Description | Type | Comments |
|---|---|---|---|
| 3 | 30mm×10mm Optoflags | Thin Sheet | if using opto endstops |
| 2 | 8mm ID spring | Spring | to eliminate backlash in the z axis |
| 1 | object with precisely 290mm length | for frame alignment | |
| 1 | object with precisely 234mm length | for frame alignment |
Note: You can combine the latter two by having a piece of thick sheet with dimensions 290mm×234mm. Make sure to mark which side is which.
Threaded Rod Cut Order (when cutting from 1m lengths):
Required: 6x1m Long 8mm Threaded Rods (or 5x1m pieces + 1x50cm piece) Rod 1: 370mm, 370mm, 210mm, ~50mm (The last piece will end up somewhat shorter than 50mm. ) Rod 2: 370mm, 370mm, 210mm, ~50mm ( Use it for your idler. Alternatively, an M8x30 or ) Rod 3: 370mm, 294mm, 294mm, ~42mm ( longer bolt can be used. ) Rod 4: 370mm, 294mm, 294mm, ~42mm (Also, a piece of M8x20 threaded rod can be used ) Rod 5: 440mm, 440mm, ~120mm ( for the wade's/greg's extruder idler. ) Rod 6: 440mm
Smooth Rod Cut Order (when cutting from 1m lengths):
Required: 3x1m Long 8mm Smooth Stainless Steel Rod Rod 1: 420mm, 420mm Rod 2: 406mm, 406mm Rod 3: 350mm, 350mm
The Prusa Mendel uses the 4 drivers in the standard Mendel electronics package to drive 5 motors by using two steppers wired in parallel to one driver [8].
Onde Comprar
See the Mendel Buyers Guide for information on where to purchase all of the parts needed.
See the Prusa Buyers Guide for information on where to purchase all of the parts needed.
Imprimindo as Peças
Imprimindo uma Prusa em uma Mendel
There are now four plates, sized to fit within a 200 x 200 x 140mm build platform.
mendle-plate-1.stl ~12h04m
mendle-plate-2.stl ~7h50m
mendle-plate-3.stl ~8h16m
mendle-plate-4.stl ~3h54m
(The Printing Time Estimates provided are based on 30mm/sec print speeds, and 25% infill. Your times will likely differ.)
(Help me out here: Are Bushings/bearings another print?)
Printing a Prusa on something else
Last but not least, if you have a machine won't print the above plates, or if you're in need of spare parts, all the .stl files necessary to print a Prusa Mendel are available on the PrusaMendel Github where you can download them and print them individually.
Comprando as peças impressas
Mendel_Buyers_Guide#RepRapped_Parts_Kits
Assembly
- Assembly instructions >> Prusa Mendel Assembly.
- Required Tools
Media
- Two printers simultaneously - Prusa and shaper cube working side by side.
- Prusa homing using endstops
- Prusa development overview
- Prusa Y axis stress test
- Prusa Z axis stress test
- Early preview of the Prusa Mendel redesign
- Fumon's Prusa build session 1 - D1plo1d building Fumon's Prusa Mendel at Hacklab.to. Should give a hint as to how the Prusa Mendel parts go together.
Prusa Improvements/Hacks
- RP_alternatives
- Rob's Auto-centering shaft coupler - designed to reduce shaft/motor vibrations (print 2/replaces 2x coupler). May require widening the openings on the z motor mounts to allow the rotation of the zip tie. Use a zip tie gun to get maximum compression on the coupling.
- Machined Pulleys and GT2 Belts
Veja também
- Prusa's Blog
- Prusa Builder Blog Feed
- Assembly photo gallery
- Prusa Mendel Visual Instructions - A nicely formatted version of the assembly process in PDF.
- Paperback version the Prusa Mendel Visual Instructions, also available in color.
- Prusa Mendel Assembly Video Tutorial Este video, o primeiro de uma série, da uma visão geral.
- RichRap Blog - Prusa Mendel Bling - Pimp my Mendel - How to build up a LM8UU Linear Bearing Prusa
- Latest Aleph Objects/LulzBot Bill of Materials
- Longboat Prusa Prusa feita com tolamentos LM8UU e instruções para contruçaõ.
