Re: [CAD_CAM_EDM_DRO] Handwheels again?!? was Re: true closed loop vs. hobby closed loop

Hi guys;

I'm not sure where to find them these days, but if you do this, I would recomend
you get or make the kind of handwheels where the handle that sticks out from the
wheel has a little leaf spring that holds it in place, so that when it isn't
needed, it can be folded down across the diameter of the wheel, held in place by
the same spring. A detent might work here, too.

Bill

On Tue Mar 9 11:14:03 2004 Kevin R. Walsh wrote:

>--- In CAD_CAM_EDM_DRO@yahoogroups.com, "ballendo" <ballendo@y...>
>wrote:
>> Kevin,
>>
>> You have CNC. Why on earth would you need handles?!?
>>
>> And just think, the Bridgeport engineers left them off of hundreds
>of
>> machines... (Were they dummies to do so?) Bacause they
>> certainly "could have" left them on if they thought there was a
>> reason... (It's not like they didn't have them "available" in the
>> Bridgeport factory!)
>>
>> I'll never understand this idea that handwheels are somehow a good
>> thing to have on a cnc machine. I've laid out the reasons I feel
>this
>> way many times before; so I won't repeat them here...
>>
>> Suffice to say that being able to move in any given increment, at a
>> speed faster than I can turn any handwheel, and stop on the EXACT
>> spot I desire repeatedly, for me at least renders handwheels
>> unnecessary... (and a safety hazard)
>>
>> Ballendo
>
>Let's just say that I've been turning the handles myself now for
>about 12 years, so I'd miss 'em if they were gone! All kidding
>aside, the flexiblity to be able to swtich from manual to CNC by
>simply pushing the enable/disable is too easy to pass up. On my BOSS
>machine the Y and Z are simple to put handles on by putting
>extensions on the motor shafts (the Z already has one, actually).
>The X is more difficult, as Jon mentioned, because the nut is
>buried. This can be accomplished with a double shafted motor, which
>is what I'll look into.
>
>Kevin


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