|Mechanical Design, Manufacturing and Engineering Forum|
] [ Search
] [ Engineering
and Design Database ] [ Resume/Job
Database ] [ Product
and Services Directory ]
[ Engineering, Design and Drafting Store ] [ Engineering Forum ] [ DFM DFA Training and Trainers ] [ GD&T Training GD&T Trainers ] [ Advertise ]
|[ POSTING POLICY / RULES ][ Archive#1 ] [ Archive #2 ] [ Archive #3] [ Calculators ] [ Tell A Friend ]|
|Forum Moderators: randykimball, Administrator|
|Casting vs Weldments vs Bolted Structures|
Posted by: FarrOut ® |
Author Profile Mail author Edit
I am currently designing a high speed 3 axis pick and place transfer system, and I need some help.
Due to the fact that I am using servo-motors to move all 3 axis of movement, inertia is a big issue, so every component must be light weight. So I started the concept of my design using aluminum plate, bolted together, to create thex, y, and z carriages. As I got into the design of the machine, I started to wonder if I could save even more wieght and still have the strength if I cast the main carriages / components.
So now I'm doing my research, and since I'm not too familiar with casting, I thought I would ask here.
1. Can anyone point me towards some good literature, books, or internet resources so I can learn more on this subject?
2. Since this is a prototype machine, and basically every design after this one will be somewhat different, I would assume that one off sand casting will be the only solution. Now I realise that casting will be more expensive than a bolt structure, but is the final cost going to be so enormous that I shouldn't even be looking at casting as a solution?
3. Is there job shops that will manufacture on-off castings in small amounts? If so, do I have to provide them with just the design of the part, and they will take care of the rest, or will I have to also design the casting molds etc?
4. Will a casted component hold up to the high dynamic forces, shock loads, vibrations the same or better to a bolted aluminum plate structure?. I am worried about cracking etc.
5. Please let me know of ANYTHING that I may be missing or misunderstanding.
Thanks in advance
|Post Reply | Recommend | Alert||View All||| Next ||
|Replies to this message|
|Re: Casting vs Weldments vs Bolted Structures|
|Re: Casting vs Weldments vs Bolted Structures -- FarrOut||Post Reply||Top of thread||Forum|
Posted by: randykimball ® |
Author Profile Mail author Edit
1.Machine out of aluminum bar leaving webs / ribs.
1.There are plenty of books at on-line book stores.
2.No, not so expensive. About the same as to machine out of aluminum bar. Prototypes are often done this way.
3.There are lots of sand casting shops around the world. You can often simply provide a wood model of the shapes and get back an aluminum copy. They will use the wood model to form a sand mold. They will have to add a spru and runners, this will cost a little.
I often make prototypes out of plastic because it is so easy to machine and has "similar" properties to aluminum within reason if you allow for strength and temperature difference.
The worst suggestion of your lifetime may be the catalyst to the grandest idea of the century, never let suggestions go unsaid nor fail to listen to them.
Modified by randykimball at Fri, Apr 01, 2005, 23:51:22
|Post Reply | Recommend | Alert||Where am I? Original Top of thread|
Powered by Engineers Edge
© Copyright 2000 - 2018, by Engineers Edge, LLC All rights reserved. Disclaimer