Re: Which rotary table to CNC?

--- In CAD_CAM_EDM_DRO@yahoogroups.com, "doug98105"
<dougrasmussen@c...> wrote:

> John,
>
> A question on the "Divisionmaster".....I see that it has a signal
> back to CNC machines or whatever triggered it to indicate it has
> completed it's move. Can the completion signal be sent prior to
> move so the unit can be used for milling a helix?
>
> I have a Haas 5C indexer which can be set to send the signal after
> move for a simple index or before so the CNC and the indexer can be
> moved simultaneously. Actually it takes a little trial and error
> with dwell times and feedrates in the CNC control to get the
> movements synchronized.
>
> If the unit can be used for milling as above, do you know what the
> maximum angular move is? Most of the programable units like Haas
> have a limit of 1000 degrees per move which makes milling a helix

of

> three or more turns impossible.
>
> thanks,
>
> Doug
>

Doug,
From what I can see both systems are available from the inputs but
the biggest drawback I can see is there will be no synchronisation
other than as you say, playing with speeds and feeds. The feed rate
can be setup for fast and slow moves in the setup menu and there is
also a continious move mode.
I can check my unit later today to see just what moves it can make s
regards max degree's.

I have been in touch with Tony, the maker of these units to see if a
later unit can be brought out where it can accept an encoder input to
keep in step wth the 4th axis. This will then make electronic gear
hobbing a viable proposition.

John S.