Re: [CAD_CAM_EDM_DRO] ARGH! Accurite DRO

David A. Frantz wrote:

>HI CS
>
>Probally best to contact Accurite and see about a new scale. They may
>be able to sell the read head only, as that can be done with some
>scales, but you will not be sure if the linear part of the scale has
>been damaged. I know its not cheap but it probally is the best avenue
>to follow.
>
>Dave
>
>C.S. Mo wrote:
>
>I just broke the head on my Accurite X-axis scale.. I drove the table off
>the side without removing the scale first. The wires broke off and the
>head came apart in four pieces. I haven't had a chance to see if the
>pieces are broken or were originally that way.
>
>What are my chances of fixing this, or getting it fixed? I'm pretty sure
>it is out of warranty, but if someone has contact information for
>Accurite, that would help...
>
>

First, you can check with Accurite about the cost to repair the scale.
I'm sure they
get a lot of these.

It depends on the level of damage. If the analyzer gratings hit the
main scale, one or both
may be badly damaged. The 4 pieces does sound a bit bad. usually,
there is a slider that
is driven across the scale by a spring wire, and a follower block that
rides grooves in the
spar extrusion, and has a link that extends through the seal. So, there
should usually only
be about 2 parts to the head. (Of course, there are a million different
designs, and the
read head and follower usually have several parts, but they should be
assembled, usually
with screws. I think the Accurites I've seen inside had a block that
rides on teflon
sliders, with the glass analyzer gratings (glued?) on one side, and a
circuit board with the
photodetectors on the other side of one part, then there is a wide slot
that wraps around the
scale, and a PC board on the other side with LEDs. If the plastic block
is broken, it might
be fairly hard to fix.

Jon