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Posted by Bob Minchin on March 15, 2008, 4:11 pm
Please log in for more thread options John Stevenson wrote:
> On Sat, 15 Mar 2008 11:31:54 GMT, Bob Minchin
>
>> After years of faithful service the X scale on my mill has stopped
>> counting. I've swapped the X and Y connections on the read out and it is
>> the scale that is faulty. I think one of the quadrature outputs is not
>> working as the display just flickers from 0.00 to 0.01mm as the table is
>> moved over large distance
>> It it a heidenhain LS308 scale which does not appear in the current
>> online catalogue. Are these repairable? and are replacements available?
>>
>> Any guidance would be most welcome
>>
>> TIA
>>
>> Bob
>
>
> Bob,
>
> Just had the same thing happen to me on a similar system.
> In my case it got onto a part of the scale it's not been on for ages
> and left the reader head behind.
> That finished up pulling the wires out and snapping the 4 rubber
> pillars that hold the reader .
>
> I dare say it would have repaired given some care but I bit the bullet
> and bought a new 3 axis unit from Onyx
> http://www.onyx-dro.co.uk/
>
> That leaves me with two scales and a reader head off a Bridgeport.
> The X is broken, the Y has been repaired but the reader could be
> swapped over and the head is OK.
>
> I was going to list this on Ebay as a head with free scales due to
> condition but if you want to make me an offer I'm open to that.
>
>
>
John,
Please could you confirm the type numbers of the scales you have and
that of the display unit.
TIA
Bob
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>counting. I've swapped the X and Y connections on the read out and it is
>the scale that is faulty. I think one of the quadrature outputs is not
>working as the display just flickers from 0.00 to 0.01mm as the table is
>moved over large distance
>It it a heidenhain LS308 scale which does not appear in the current
>online catalogue. Are these repairable? and are replacements available?
>
>Any guidance would be most welcome
>
>TIA
>
>Bob