Re: [CAD_CAM_EDM_DRO] Re: Rich's penholder[Spindle lock needed]

ballendo,
That was my first thought but, the lower edge of the spindle pulley is
machined to a concave edge on my unit, leaving nothing to drill directly
into. Darn!
A spring loaded plunger as found on many power drills would be perfect.
If there is enogh meat in the spindle case side, a recess could be
machined to hold a plunger pin assy well enough under the pulley
to do the job and lock into place as well.
I want to avoid the top pulley surface if possible. (Don't ask me why).
Rich D., Atlanta and environs, chilly of late.

ballendo@... wrote:

>
> Rich,
>
> Just a quick thought:
>
> Get a piece of spring steel (Car feeler gauge about the right size,
> and cheap) Drive a rivet through a punched hole (or use the hole
> already there in the feeler gauge). Fasten it onto the spindle
> housing so that the rivet "peg" is under the motor pulley. (I'd use
> three 6-32 panhead screws, 2 on one side, 1 on the other, in a
> triangle pattern. Means you don't have to drill/punch more holes in
> the spring steel, and the Length is adjustable...)
>
> Now use the rivet to "spot" the alum pulley for a matching drilled
> hole. Which will engage the peg of the rivet to stop spindle
> rotation. Remove the pulley and drill the hole(s). see the P.S.
>
> The "bump" on the rivet will lift the feeler gauge enough to use a
> small screwdriver or a fingernail to activate the setup. The spring
> steel means it will release itself.
>
> Should be fast, cheap, work well, and not offend visual
> sensibilities :-)
>
> Ballendo
>
> P.S. If you were to pre-drill holes carefully in the pulley, it could
> be an indexer too! Old delta wood lathes had such a system.
>
> --- In CAD_CAM_EDM_DRO@y..., "Rich D." <cmsteam@a...> wrote:
> > I do want a way to lock the spindle for tightening/loosening
> > drawbolts. Any good ideas out there?