Joachim,
Just because you aren't using the newest or latest material available does not mean that you have not developed a very workable solution. I still think that a metallic or carbon/epoxy arm has some very good properties that would be hard to duplicate with many other materials. When looking at 3D modeling at this point in time the limitations are mostly the materials available for the process. The flexural modulus of the materials are rather low for the uses that you are looking at. Keeping things simple is often still the best way to design for a task.
Canyoncruz,
I recently had an item quoted by Solid Concepts, three pieces with a total weight of 9 lbs and the quoted price for production was $9,000, not exactly practical and the material properties of the best materials was very questionable as far as the heat distortion temperature for the best material currently available. Most of the materials have less than a 200 degree F heat distortion value.
Just because you aren't using the newest or latest material available does not mean that you have not developed a very workable solution. I still think that a metallic or carbon/epoxy arm has some very good properties that would be hard to duplicate with many other materials. When looking at 3D modeling at this point in time the limitations are mostly the materials available for the process. The flexural modulus of the materials are rather low for the uses that you are looking at. Keeping things simple is often still the best way to design for a task.
Canyoncruz,
I recently had an item quoted by Solid Concepts, three pieces with a total weight of 9 lbs and the quoted price for production was $9,000, not exactly practical and the material properties of the best materials was very questionable as far as the heat distortion temperature for the best material currently available. Most of the materials have less than a 200 degree F heat distortion value.
Thants the problem.
The 3D printer has to melt.
And it can not produce a weave, like the carbon rod i am using.
I could produce interesting 3D structures INSIDE the tube though.
The 3D printer has to melt.
And it can not produce a weave, like the carbon rod i am using.
I could produce interesting 3D structures INSIDE the tube though.
At this time I just don't see much in a mechanical sense where 3D printing of the plastic material has much use besides visual models. There really isn't any reason that higher melt materials can't be used they just haven't been developed yet and the machine controls needed for the higher melt temps. On the other hand there are so many things you can do with the carbon fiber composites besides a plain tube. Shape changes such as elliptical shapes or even a simple x section could be done with the carbon fiber. You only have to look as far as a composite bicycle frame to see some of the shape changes possible.
Yeah sine metal albums might really heat up the arms. I am interested more in the MMC's. They are my fave material for Photonics packaging in harsh environments. The damp. They have high stiffness. The have low mass. They out perform titanium. I agree, another solution might be constrained layer. What are the short comings of carbon composite tubes? Could a laminate or ant internal structure add to performance? I recently has a couple models made of flight boxes with internal optics and electronics. Plastic, two different designs. The charge was $550. A local shop.
Canyon,
There a many different ways to make a carbon epoxy tube. Round tubing is just the simplest method to make a tube. You can make many other shapes with internal bladders or some form of soluble core or a two part mold. Most round tubing is made by filament winding on straight mandrels but other shapes are possible but much more difficult to do. With selective use of multiple fiber types you could do some very interesting designs.
There a many different ways to make a carbon epoxy tube. Round tubing is just the simplest method to make a tube. You can make many other shapes with internal bladders or some form of soluble core or a two part mold. Most round tubing is made by filament winding on straight mandrels but other shapes are possible but much more difficult to do. With selective use of multiple fiber types you could do some very interesting designs.
Jelco makes one too :Jelco TL 45 Tonarmlift
I can get you this from Japan.
It is made by IT-Kogen that make a lot of mechanical parts for more or less everybody.
I can get you this from Japan.
It is made by IT-Kogen that make a lot of mechanical parts for more or less everybody.
Making something out of nothing :Ikea Plattenspieler - Jochen Soppa
Some people have time to shop.
I am jealous.
Some people have time to shop.
I am jealous.
Thanks for the Jelco link , i have one on a AR-ES1 table , the lift is a bit tired , if another service attempt dont solve , i will replace ...
kool! I have this feature in my solidworks, but just to sit back with my ipad and fart around. this is cool
selfpromoting.... read the forum rules!!!
BTW, we have very good companies in Europe and I for me only work and support with such companies here which.
But I wish you good luck to find some companies in your area to deal with.
BTW, we have very good companies in Europe and I for me only work and support with such companies here which.
But I wish you good luck to find some companies in your area to deal with.
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