Re: [CAD_CAM_EDM_DRO] Resolvers vs Encoders

On 10/21/02 3:19 PM, "doug king" <evelle97530@...> wrote:
Hi all,
Ray Henry and I had considerable discussion about resolvers on Hardinge
lathes as he has several. Space seems a little limited; the resolvers are
geared off the shaft but the main problem is space....only about an inch.
Once could always custom make an encoder from US Digital parts that would
work.
The alternative would seems to be to look at the Analog Devices resolver to
digital converter. Not too expensive.

Good luck,

Dave
>
>
> Jon Elson <elson@...> wrote:
>
> doug king wrote:
>
>> Hi.I have an old HNC Hardinge that I believe has resolvers.Do I have to
>> change 'em out?I'd love to stay cheap and get function from this beauty if'n
>> I can...Thanks,Doug
>>
>>
> Well, it is a cost comparison. How much space is available. (Actually,
> most resolvers are
> bigger than modern optical shart encoders, so size is not likely to be a
> problem.)
>
> So, it boils down to how much would shaft encoders of suitable
> resolution cost, vs.
> how much does a resolver to quadrature converter cost?
>
> Jon