Protolabs Insights: Konstruieren von 3DDruck Teilen mit Multi Jet Fusion

Das HP Multi Jet Fusion (MJF) ist eine relativ neue Technologie, die Ihnen neue Möglichkeiten eröffnet. Diese Technologie ermöglicht, funktionale Nylon-Prototypen und Endanwendungsteile in nur 1 Tag herzustellen. Dieses Video zeigt Ihnen das Multi Jet Fusion-Verfahren generell und welche Vorteile dieses Verfahren aufweist.

Text im Video


00:08hello and welcome to the master class

00:11this week I focus on 3d printing and a

00:14relatively new technology called multi

00:17jet fusion or MGF that will open up new

00:20opportunities for you no it's not jet

00:24propulsion technology for the Starship

00:25Enterprise is something that you may

00:28come across if you outsource 3d printed

00:30plastic parts it is an industrial-grade

00:333d printing technology that offers

00:36certain advantages over other 3d

00:39technologies in the next few minutes I

00:41will explain what it is what are its

00:43pros and cons and how to best design

00:46parts if you want to use it the good

00:49news is is that you've already designed

00:51parts for 3d printing using selective

00:54 laser (Hersteller) sintering then you're already well

00:57on your way to mastering can't designs

00:59for mjf both use a heated chamber and

01:03build a 3d plastic structure by adding

01:06successive layers that are just microns

01:08thick the difference is that selective

01:11laser sintering or SLS uses a laser to

01:15fuse powder layers together whereas mga

01:18uses an infrared heating element

01:21neither needs support structures for the

01:23process okay enough of the

01:26technicalities what does this mean for

01:28you which technology you will use will

01:31depend on what performance

01:33characteristics you want from your part

01:35let's take a look at both in a

01:38head-to-head comparison if you want a

01:41finer resolution for your part then MGF

01:44can get down to a minimum feature size

01:46of 0.5 millimeters which is finer than

01:50the 0.75 millimeters produced by SLS but

01:54there's always a but there isn't there

01:55an Gaea produced parts are a bit more

01:58variable at this fine detail than SLS so

02:01it depends on what is important for you

02:04MJS also have more consistent isotropic

02:07material properties and this means that

02:09it has more consistent mechanical

02:12properties in every direction or axis

02:14of your part so if you want great

02:17strength and reliability for every bits

02:20of your part then MGF could be the


02:23this makes MGF really good for parts

02:26like brackets and clips or durable but

02:29accurate jigs and fixtures if you need

02:32larger part sizes then you need to know

02:34that sls can produce bigger parts for

02:37most 3d printed plastic parts this

02:40should not be an issue but it may be

02:42worth checking with your supplier MDF is

02:45a relatively new technology so at this

02:47moment it's only available in Nylon 12

02:49which means that SLS edges it for

02:52different materials and colors but it's

02:55worth saying though that nylon 12 is a

02:57great material for functional parts and

03:00end-user applications if speed only time

03:03is an issue for you then it's worth

03:05noting that MGF builds parts faster than

03:08other 3d printed technologies but in

03:12truth there are other factors that will

03:14affect your total lead time more than

03:16this such as getting the design right or

03:19the time it takes for your supplier to

03:22come back with a quote and design for

03:25manufacturability analysis ok if after

03:29all this you think that MGF may be the

03:31ones for you to go for your 3d printed

03:34part then what do you need to know about

03:36getting your design right well if you've

03:40designed parts for SLS and even

03:42injection molding then you are well on

03:45your way to design your part for mjf

03:48here are some pointers to help you out

03:51thin walls or large flat surfaces should

03:54be reinforced with ribs or gussets and

03:58holes should be surrounded by raised

04:00bosses raised text and cosmetic part

04:03features smaller than 0.5 millimeters

04:07may not survive secondary

04:09post-processing so make sure you check

04:11your design for manufacturability

04:13analysis from your supplier the ideal

04:15wall thickness for mjf is between 2.5

04:18and 3.8 millimeters and just so you know

04:22like any 3d printing process njf will

04:26produce some stair-stepping

04:28on oblique angles this means that you

04:31should clearly identify cosmetic

04:33services on the part of the drawing does

04:36this all sound familiar well it should

04:38because mga is very similar to other

04:41additive manufacturing technologies

04:43where it will make a difference is the

04:45ability to manufacture manufacture

04:48accurate parts with isotropic mechanical

04:51properties often more quickly than other

04:543d printing options so why not think

04:57about MJ for your next project and talk

05:00to us all your supplier about the

05:02possibilities guys I know that there's a

05:05lot of technical information in this

05:07video so if you want to mull it over

05:10after this the good news is that we have

05:12produced this information as written

05:15design tips that you can find on our

05:17website well that's it for this week and

05:20we hope to see you next week


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Letzte Änderung: 07.04.2020