Re: [CAD_CAM_EDM_DRO] Re: extending linear rail by butting two pieces together

Just a thought, but if you use one of your carriages (i.e. the moving
part) and use it to straddle the butt joint, you could rely on the
internal precision of the carriage to align your two pieces of rail. If
when you tighten everything down and you find the carriage won't roll
smoothly across the joint, you may have to shim one side slightly or
just reposition one part.

Cheers, Peter

doug king wrote:

>No sweat.Hotsaw 'em off,deburr 'em and butt 'em together.We did it all the time on our robot track systems.Make sure they're seated against the registration surface,so they're parallel.We would pad them,and use clamps to seat them as we were tightening them down.It is best to "time" the cuts,so you have the ends fastened by the mounting bolts.This prevents "walking".Good luck! Doug King.
> "dolph_and_nicole <dolph@...>" <dolph@...> wrote:Just curious - have the same situation (20mm THK rail). I have a
>sherline mill, and wondering if i can just mill the ends off square?
>I have called a few machine shops in the area, and they have either
>said 'you need to grind them' or 'i have never heard of THK square
>rails, are you sure they arent round?'
>
>Also - mounting to 8020 extrusion, and curious if there are tricks to
>keeping the 'butt' aligned. (w/ key pushing the ends together,
>etc...)
>Thanks!
>Eric
>--- In CAD_CAM_EDM_DRO@yahoogroups.com, "Robert Campbell"
>wrote:
>
>>Derek,
>>
>>Two pieces of THK type rails can be butted.
>>
>>Bob
>>
>>----- Original Message -----
>>From: "tig415"
>>To:
>>Sent: Sunday, November 17, 2002 2:23 PM
>>Subject: [CAD_CAM_EDM_DRO] extending linear rail by butting two
>>
>pieces
>
>>together
>>
>>
>>>Has any one had any luck butting two pieces of flat linear rail
>>>together to make a longer piece.
>>>I need to extend my z axis and have a couple of short pieces that
>>>would work perfectly.
>>>
>>>Thanks
>>>Derek
>>>
>
>
>
>
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