SLS Thread design
SLS Thread design
(OP)
I am designing threads for prototype parts which are to be produced using SLS.
So far I have been using a "hemisphere" design - one part is threaded, and the corresponding part has 2 little hemisphere knobs which the thread screws onto. It's a double entry thread, the 2 hemisphere bumps are on opposite sides.
I have had good results with 30mm, 50mm, and 65mm diameter parts. But the 90mm diameter part doesn't hold together well.
Are there any better ways of designing threads for SLS? (I have have bad experiences with regular type threads)
Or are there any slight design tweaks that will create a stronger connection. ie. making the thread steeper or shallower? Increasing the number of bumps etc.
Many Thanks.
So far I have been using a "hemisphere" design - one part is threaded, and the corresponding part has 2 little hemisphere knobs which the thread screws onto. It's a double entry thread, the 2 hemisphere bumps are on opposite sides.
I have had good results with 30mm, 50mm, and 65mm diameter parts. But the 90mm diameter part doesn't hold together well.
Are there any better ways of designing threads for SLS? (I have have bad experiences with regular type threads)
Or are there any slight design tweaks that will create a stronger connection. ie. making the thread steeper or shallower? Increasing the number of bumps etc.
Many Thanks.





RE: SLS Thread design
"Art without engineering is dreaming; Engineering without art is calculating."
Have you read FAQ731-376: Eng-Tips.com Forum Policies to make the best use of these Forums?
RE: SLS Thread design
source: wikipedia
NX 7.5
Teamcenter 8
RE: SLS Thread design
source: also Wikipedia
"Art without engineering is dreaming; Engineering without art is calculating."
Have you read FAQ731-376: Eng-Tips.com Forum Policies to make the best use of these Forums?
RE: SLS Thread design
Have made tolerances tighter, enlarged bump, and made a bit steeper. Any other suggestions?
Also sodium lauryl sulfate, despite being ubiquitous is a pretty nasty chemical and a carcinogenic - so I won't be using that. Laser sintering however, is wicked!
RE: SLS Thread design
NX 7.5
Teamcenter 8
RE: SLS Thread design
Yes, absolutely - just like dihydrogen monoxide. An evil conspiracy has developed, putting SLS into all kinds of consumer products. It's the main component in baby shampoo, and now even toothpaste. Soon, it will be government-mandated in tinfoil hats too.
[snark mode off]
What a load of crap. The stuff is safe enough to drink, though it'd taste lousy.
"Spurious onLine Sources (SLS) are being quoted more and more often in attempts by ignorant people to seem less so in online forums."
- source: me.
RE: SLS Thread design
What is Engineering anyway: FAQ1088-1484: In layman terms, what is "engineering"?
RE: SLS Thread design
NX 7.5
Teamcenter 8
RE: SLS Thread design
RE: SLS Thread design
What is Engineering anyway: FAQ1088-1484: In layman terms, what is "engineering"?