Author Topic: where to get arms like on erp... (Read 4429 times)

jamort · « **on:** June 25, 2009, 06:33:14 PM »

I like the arm design from admins ERP platform and I'm sure they were custom order but any idea of were to get them from?

Joker94 · « **Reply #1 on:** June 25, 2009, 06:52:31 PM »

do you have access to a mill or cnc so you can do what admin did and do it yourself

if not you may still be able to do it your self, i did for a school project which i can post as i don't have

i just used a coping saw/jewllers saw to cut out the fram and the detail and used a heat gun to bend the claws

and finally i have never seen arms like admins in a shop or on a site so i'll have a look and get back to you

jamort · « **Reply #2 on:** June 25, 2009, 06:57:48 PM »

i might be able to get access to a cnc mill im not sure yet... i dont want to order it off a website with a custom cnc because its so expensive

Metal Slug 2 · « **Reply #3 on:** June 25, 2009, 07:00:32 PM »

You cant buy the arms from admins ERP becasue he made them himself. If you ask nicely, admin might give you the (probably eagle?) files on the arms and you can then order the arms to be built for you through a CNC machining company.

jamort · « **Reply #4 on:** June 25, 2009, 09:04:34 PM »

i knew the arms were custom built....

SmAsH · « **Reply #5 on:** June 26, 2009, 08:31:44 AM »

Quote from: jamort on June 25, 2009, 09:04:34 PM

i knew the arms were custom built....

Quote

I'm sure they were custom order

these two thing contradict each other?

Quote from: Metal Slug 2 on June 25, 2009, 07:00:32 PM

If you ask nicely, admin might give you the (probably eagle?) files on the arms and you can then order the arms to be built for you through a CNC machining company.

eagle? isn't eagle only boards? i don't think he mentions which program he uses in the tutorial

jamort · « **Reply #6 on:** June 26, 2009, 01:24:40 PM »

well custom made

itd be nice if we could know what program he used to design

Ro-Bot-X · « **Reply #7 on:** June 26, 2009, 08:07:47 PM »

Admin uses Autodesk products to design his robots. He also does stretch analiss on the parts, but I forgot the name of the software and I'm too lazy to look it up. He used a CNC to cut out all the parts for his ERP robot from Delrin material. So the arms were custom built not ordered. Perhaps send him a PM for the files?

sonictj · « **Reply #8 on:** June 27, 2009, 09:27:56 PM »

Quote

Admin uses Autodesk products to design his robots. He also does stretch analiss on the parts, but I forgot the name of the software and I'm too lazy to look it up.

Most likely Autodesk Inventor. A good way to make parts like admin's is a scroll saw. First you draw something up in whatever cad program you have. Then you print it out 1:1. After you have the printout rubber cement it to your workpiece and cut it out. I recommend cutting close then finishing up with sanding. A scroll saw will run you ~$100-$150.

Admin · « **Reply #9 on:** June 27, 2009, 09:46:46 PM »

Quote from: Ro-Bot-X on June 26, 2009, 08:07:47 PM

Admin uses Autodesk products to design his robots. He also does stretch analiss on the parts, but I forgot the name of the software and I'm too lazy to look it up. He used a CNC to cut out all the parts for his ERP robot from Delrin material. So the arms were custom built not ordered. Perhaps send him a PM for the files?

Entirely in Autodesk Inventor. The technique is called 'FEA-based stress analysis'

I can upload 1:1 dimensions for printout, .ipt or .stl or .iges files, and even CNC code if you'd like.

jamort · « **Reply #10 on:** June 27, 2009, 09:50:00 PM »

probably 1:1 dimensions for me... much appreciated

Admin · « **Reply #11 on:** June 27, 2009, 10:30:46 PM »

I've decided to open source the entire ERP. I'll get up mechanical designs, assembly instructions, and full source code.

It'll take me awhile, of course, but check back occasionally and annoy me every ~2 weeks if I didn't get it all up

SmAsH · « **Reply #12 on:** June 27, 2009, 10:39:56 PM »

YAY, this is what ive been waiting for, thanks admin!
will they be on the erp page?

Admin · « **Reply #13 on:** June 27, 2009, 10:44:11 PM »

Quote from: SmAsH on June 27, 2009, 10:39:56 PM

YAY, this is what ive been waiting for, thanks admin!
will they be on the erp page?

yeap

jamort · « **Reply #14 on:** June 28, 2009, 10:34:58 AM »

this is really good man i cant wait for you to get the info up

Admin · « **Reply #15 on:** June 28, 2009, 01:43:08 PM »

Here you go:
1:1 ratio printable dimensions of ERP

And all the software, plus other stuff:
http://www.societyofrobots.com/robot_ERP.shtml#opensource

I'll be putting up a video on how to assembly it sometime this week.

SmAsH · « **Reply #16 on:** June 29, 2009, 12:46:37 AM »

bravo admin! all dimensions are in inches?
you you reckon i could just print off the "stencil" so to say and paste it on the material and cut?

Admin · « **Reply #17 on:** June 29, 2009, 04:19:34 AM »

Quote from: SmAsH on June 29, 2009, 12:46:37 AM

bravo admin! all dimensions are in inches?
you you reckon i could just print off the "stencil" so to say and paste it on the material and cut?

yes. yes.

SmAsH · « **Reply #18 on:** June 29, 2009, 05:49:59 AM »

as soon as i can get my hands on some dammed hdpe ill have a go! admin, are those plastic cutting boards i have made out of hdpe? the only place i found that sells hdpe in sheets is mcmaster.com but shipping to aus would be hell...
it would be a bit better just to go down to safeway and get a few boards if that works...

Joker94 · « **Reply #19 on:** June 29, 2009, 06:13:03 AM »

Quote from: SmAsH on June 29, 2009, 12:46:37 AM

bravo admin! all dimensions are in inches?

is this becuse you work in cm or mm and don't know how to covert them if so 1 inch = 2.54cm

so to work out 1.35 inches it is simple 1.35*2.54 =3.429

hope i understood

SmAsH · « **Reply #20 on:** June 29, 2009, 06:16:43 AM »

i know all that

i have a metal ruler in front of me with the conversion table on the back

Admin · « **Reply #21 on:** June 29, 2009, 09:15:02 PM »

HDPE won't work for the arms - its too soft and flexible. You can use acetal, delrin, or nylon. Whatever is cheaper in your country.

SmAsH · « **Reply #22 on:** June 30, 2009, 12:37:18 AM »

i meant for the base

you used delrin right? ill take a look down in the industrial area of my city and see if i can scab some free plastic.

Joker94 · « **Reply #23 on:** June 30, 2009, 04:47:19 AM »

smash, contact some blind company or company that manufactures or make items from plastic

i got some good off cuts cheap

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Author Topic: where to get arms like on erp... (Read 4429 times)