Connect stainless stell with aluminum profile
Connect stainless stell with aluminum profile
(OP)
We are building a light detection system which works like a clock’s hand: an aluminum profile (the “hand”,shown in schematics) carrying detector assemply on its one end rotates around the other end; as the aluminum profile is quite long (2200L*40W*40H mm) and heavy (~10kg), we will add a counter-weight to the other end of the hand to reduce the torque.The hand rotates around the center of the system through the inner part of a cross-roller bearing. The question is, is there any “off-the-shelf design" of a stainless steel “connection block” that connects the aluminum profile, the bearing and the counter-weight?





RE: Connect stainless stell with aluminum profile
Are the stresses so high that you need stainless steel?
I.e., if you have to make it a custom part, as I suspect, I'd look at an aluminum alloy billet.
Mike Halloran
Pembroke Pines, FL, USA
RE: Connect stainless stell with aluminum profile
We conjectured that a stainless steel would be a more reliable choice, but it will be up to the machinist who actually does the work. Thanks for your suggestions.
hz
RE: Connect stainless stell with aluminum profile
I would assume the cross roller would have greater torque requirements.
RE: Connect stainless stell with aluminum profile
Learning everything the hard way gets expensive fast.
Mike Halloran
Pembroke Pines, FL, USA
RE: Connect stainless stell with aluminum profile
Get the machinist to mill you a block for the bearing and turn a spigot to connect both.
Also using aluminium and stainless steel together in un-ideal conditions can cause corrosion
RE: Connect stainless stell with aluminum profile
Mike Halloran
Pembroke Pines, FL, USA
RE: Connect stainless stell with aluminum profile
I agree: If it is a light load, use a simple Al block: it is easier to machine all at one time.
RE: Connect stainless stell with aluminum profile
If the crossed roller bearing (neat by the way) proves too spendy then you can probably do the job with an oversized deep ball bearing, or definitely with two taper roller bearings facing each other.
Cheers
Greg Locock
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RE: Connect stainless stell with aluminum profile