Hi folks,
Thanks for the inputs. I now understand better what to be thinking about
and can continue the planning the conversion.
Dave
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On 08/11/2015 01:48 AM, Dave Caroline wrote:
> It also depends on minimum tap size, a tiny tap will be less able to
> stand any vertical strain due to encoder resolution in thou per
> encoder edge and there has to be an amount due to the turn around of
> up to something (a count) plus any delay in
On Tuesday 11 August 2015 04:41:16 Dave Caroline wrote:
> There is no such thing as "instantly" there is a delay until an edge
> is detected, a delay before the software has looked at the current
> position and direction and a delay before Z starts to follow the
> reversal, the sum of delays is a
There is no such thing as "instantly" there is a delay until an edge
is detected, a delay before the software has looked at the current
position and direction and a delay before Z starts to follow the
reversal, the sum of delays is a strain on the tap, making all numbers
less will reduce the strain
On Tuesday 11 August 2015 02:48:53 Dave Caroline wrote:
> It also depends on minimum tap size, a tiny tap will be less able to
> stand any vertical strain due to encoder resolution in thou per
> encoder edge and there has to be an amount due to the turn around of
> up to something (a count) plus a
It also depends on minimum tap size, a tiny tap will be less able to
stand any vertical strain due to encoder resolution in thou per
encoder edge and there has to be an amount due to the turn around of
up to something (a count) plus any delay in the software and servo
driver lags (ferror)
Rather m
On 08/10/2015 06:38 PM, David Bagby wrote:
> Hi,
> I'm planning a mill conversion to LCNC and I'd like it to be able to do
> rigid tapping.
>
> I figure that this will require an encoder or equivalent) on the
> spindle. I won't be able to to easily attach a common encoder disc to
> the spindle, so
On 11 August 2015 at 01:32, Gene Heskett wrote:
> I have not tried that low, but I'd think, based on some that claim to
> have made it work with 1 PPR, that a suitably stiff controller that will
> not allow more than a few percent of speed variation with the load
> coming on when the tap starts to
On Tue, 11 Aug 2015, andy pugh wrote:
> Date: Tue, 11 Aug 2015 01:07:31 +0100
> From: andy pugh
> Reply-To: "Enhanced Machine Controller (EMC)"
>
> To: "d...@calypsoventures.com" ,
> "Enhanced Machine Controller (EMC)"
> Subject: Re:
On Monday 10 August 2015 19:38:28 David Bagby wrote:
> Hi,
> I'm planning a mill conversion to LCNC and I'd like it to be able to
> do rigid tapping.
>
Description of mill, particularly its spindle & drive?
> I figure that this will require an encoder or equivalent) on the
> spindle. I won't be a
On 11 August 2015 at 00:38, David Bagby wrote:
> I've looked but not found a spec for the required encoder resolution.
I guess it will depend on machine rigidity, i.e. how far can you turn
a tap with no head movement before it damages the thread or breaks the
tap.
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atp
If you can't fix it, yo
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