which aluminum ?

This forum is dedicated to those Hobbyists Interested in CNC machining in their home shops. (Digital Read Outs are also topical, as is CAD/CAM as it relates to CNC)

Moderator: Harold_V

Post Reply
sml2010
Posts: 19
Joined: Sun Aug 07, 2011 1:39 am

which aluminum ?

Post by sml2010 » Wed Oct 19, 2011 9:59 am

Hi to all

I want build a CNC machine for our job. My CNC machine use for industrial application not for education . We want use aluminum material for our machine’s bed and stracures. I know , The CNC machines that use in industrial application build by polymer material, cast iron or ..... but force and stress is too low in our job and our CNC machine so we want use a aluminum material, but we don’t know which type of aluminum material can damp very good the stresses and also be enough tough and solid.

Can you please help us to select a good type of aluminum?

Thank you

User avatar
Mid Day Machining
Posts: 418
Joined: Thu Apr 09, 2009 10:58 am
Location: San Clemente, CA

Re: which aluminum ?

Post by Mid Day Machining » Wed Oct 19, 2011 10:37 am

I would consider 7050 aluminum for your application. That is what is used in the airframes on several Boeing aircraft. It is strong and absorbs some vibration.
You can buy good parts, or you can buy cheap parts, but you can't buy good cheap parts.

BClem
Posts: 69
Joined: Fri Apr 01, 2011 9:14 am

Re: which aluminum ?

Post by BClem » Wed Oct 19, 2011 2:54 pm

Or for similar toughness and superior corrosion resistance - as well as weld-ability - 5086 alloy. The ways should be anodized and polished in any case....

User avatar
JimGlass
Posts: 2274
Joined: Sat Jan 04, 2003 8:33 pm
Location: 40 Miles West of Chicago/near DeKalb
Contact:

Re: which aluminum ?

Post by JimGlass » Sun Oct 23, 2011 5:56 pm

I would buy some cast iron rectangle for making machine ways. I thought about building a CNC mill with aluminum and some friends discouraged me from using aluminum so I used cast iron.

How to build a CNC mill

Jim
Tool & Die Maker/Electrician, Retired 2007

So much to learn and so little time.

www.outbackmachineshop.com

Mr Ron
Posts: 1932
Joined: Tue Dec 22, 2009 12:36 pm
Location: Vancleave, Mississippi

Re: which aluminum ?

Post by Mr Ron » Fri Dec 23, 2011 12:26 pm

Check out this catalog: www.80/20.net
Mr.Ron from South Mississippi

pioneer
Posts: 2
Joined: Mon Oct 31, 2011 1:53 am

Re: which aluminum ?

Post by pioneer » Tue Feb 14, 2012 3:05 pm

Take samples hold them up and tap with hammer.
The one that clanks the most is good.
The ones that rings like a bell is bad.
My test here was between 6061 and mic 6 and mic 6 sounded better.

Mr Ron
Posts: 1932
Joined: Tue Dec 22, 2009 12:36 pm
Location: Vancleave, Mississippi

Re: which aluminum ?

Post by Mr Ron » Sun Aug 12, 2012 6:29 pm

sml2010 wrote:Hi to all

I want build a CNC machine for our job. My CNC machine use for industrial application not for education . We want use aluminum material for our machine’s bed and stracures. I know , The CNC machines that use in industrial application build by polymer material, cast iron or ..... but force and stress is too low in our job and our CNC machine so we want use a aluminum material, but we don’t know which type of aluminum material can damp very good the stresses and also be enough tough and solid.

Can you please help us to select a good type of aluminum?

Thank you
6061-T651 is a good strong alloy along with 6063, 80-20 aluminum extrusions. 6061 is the least expensive alloy compared to the 2000 and 7000 series alloys (aircraft quality). MIc 6 is nice if you need a ground precision surface, but you will pay through the nose for it and it is available only as ground plate. The only time I would use Mic 6 is if it were laying around as scrap or surplus.
Mr.Ron from South Mississippi

Post Reply