Hello everybody,
Since months that i'm thinking about how to implement a Spindle and C axis
using the same motor (like the commercial turning centers) in one of my
lathes, and i want to share what i think, so if you can help me to
understand i would be really thanked.
My first doubt is, can i
On 5 May 2010 13:57, Leonardo Marsaglia leonardomarsagli...@gmail.com wrote:
My first doubt is, can i use the spindle servo motor for positioning ?
Yes.
Because the driver that comes with the spidle servo that i can buy in my
country, says that the only input is analog voltage.
This is
Hello Andy, thanks a lot for your quick answer..
So let see if i'm thinking well..
I can use the same spindle servo motor as an positioning axis to make
millings controlling it with analog voltage closing the loop in emc and then
when required as a spindle motor , i was asking this because some
On 5 May 2010 15:03, Leonardo Marsaglia leonardomarsagli...@gmail.com wrote:
I can use the same spindle servo motor as an positioning axis to make
millings controlling it with analog voltage closing the loop in emc and then
when required as a spindle motor
Yes, assuming that the mechanical
On Wed, 05 May 2010 11:03 -0300, Leonardo Marsaglia
leonardomarsagli...@gmail.com wrote:
I'm trying to understand this because my idea is to mill lobe shapes for
making camshafts, and it would be very nice to make the roughing process
with a mill.
I'm trying to clear my doubts before
Thanks a lot for your help andy, you've really cleared my doubts.
The last question is, do you think is necesary to home when i change from
spindle to axis? or the index pulse itself gives me the warranty that i've
never loose the real position?, because as you know the home sequence makes
two
Hello john,
Thanks for your explaination, i've forgotten to talk about the mechanical
situation of the machine.
I've always thought about using a worm gear reduction because it's farther
more secure than direct pulley reduction, the only problem with the worm and
gear is that the revolutions
On 5 May 2010 15:47, John Kasunich jmkasun...@fastmail.fm wrote:
Just because a particular motor works well driving the spindle
in lathe mode does NOT mean it will be even close to good enough
for direct drive positioning.
A good point, I have only been discussing what is technically possible
hello andy,
very nice explaination, i was thiking about using spindle-synchronised
motion a few months ago, but didn't know if it was possible,
Do you think that if i use a cam software with the emc2 post, i could shape
the lobe using the spindle as a spindle in synchronised motion? That would
Gentlemen,
I have zero experience with these machines. I have watched machines such as
this. It appeared to me as if the spindle 'changed' gears between the
turning and milling operations. I assumed a worm drive was
engaged/disengaged for the different cutting requirements.
Just saying.
Stuart
On
Yes i think stuart is right, sometime ago in a similar discussion someone
told me the same, the there are two different motors for turning or milling.
Well, the only question left then is if i can use spindle synchronised
motion, at very low speed (10 rpm or less), and a mill in the X axis to
On 5 May 2010 17:45, Leonardo Marsaglia leonardomarsagli...@gmail.com wrote:
Do you think that if i use a cam software with the emc2 post, i could shape
the lobe using the spindle as a spindle in synchronised motion?
I think so. I suspect that you would need a specially written CAM to
generate
So andy, you think that with G33 i will have the wait for the index pulse as
if i'm doing a regular thread along the Z axis? and because of that it
wouldn't be quite right for making lobes..because the movement won't be
continuous Correct me if i didn't understand
Regards.
2010/5/5 Andy Pugh
On 5 May 2010 19:00, Leonardo Marsaglia leonardomarsagli...@gmail.com wrote:
So andy, you think that with G33 i will have the wait for the index pulse as
if i'm doing a regular thread along the Z axis? and because of that it
wouldn't be quite right for making lobes..because the movement won't
Is there anything I need to configure to make the function keys (in Axis
GUI) work?
When I hit the function keys, e.g. F1, F2 nothing happens.
The function keys work in emacs, so I know it's possible. I'm using the
Ubuntu 8.04 live CD install of EMC2, downloaded from the linuxcnc website.
I understand the most of your idea and it seems to be good, but i don't have
clear if i should use the spindle in rpm mode, or as rotary axis in degree
mode... because my first idea was to use 2 axis ... one rotary and the
second linear, like a normal mill.
Another question would be... how can i
On 5 May 2010 19:49, Leonardo Marsaglia leonardomarsagli...@gmail.com wrote:
I understand the most of your idea and it seems to be good, but i don't have
clear if i should use the spindle in rpm mode, or as rotary axis in degree
mode... because my first idea was to use 2 axis ... one rotary
Thank you guys for your answers, you were very helpful..
I will explain what i decided to do... the idea is to make the X axis of the
lathe to be a mill and the spindle will be turned with a servo motor
reduced several times to increase torque (probably with a worm and gear to
make impossible
Nice machine, but i have 2 lathes waiting for a retrofiting here.. if you
ever have a machining center or a cnc milling for retrofiting please let me
know because i'm interested.. better if they are for heavy dutty.
Good luck with the sale!
Regards.
2010/5/5 Steve Stallings steve...@newsguy.com
Steve,
What is wrong with the lathe that requires a retrofit? What control does it
currently have?
-Wes
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Neil Baylis wrote:
Note: I tried monitoring the axis.0.home-sw-in with Halmeter, but it
never changes. Also, when I use Halmeter to monitor the limit switch,
that never changes either, even though it is changing on TkEMC.
Something I don't understand about using Halmeter, I guess.
In your
Neil Baylis wrote:
Is there anything I need to configure to make the function keys (in Axis
GUI) work?
When I hit the function keys, e.g. F1, F2 nothing happens.
The function keys work in emacs, so I know it's possible. I'm using the
Ubuntu 8.04 live CD install of EMC2, downloaded from the
Very much an outsider on this subject, but i recall recently a link here or
on another forum in which someone was using a lathe as the C axis with a
milling head on the X axis instead of traditional lathe tooling. The X axis
was very fast and would follow a programmed profile coordinated with
Just a thought, but you might be able to use the Nurbs function to do
the cam profile creation for you also.
I think it is G5.2 or something similar. There is a butterfly demo
program in the sample code that utilizes that.
Dave
On 5/5/2010 5:35 PM, Leonardo Marsaglia wrote:
Thank you guys
Well, the Dell keyboard worked. So then I did what I should have done in the
first place: ask the Google!
Turns out, there's a magic incantation you can do to make the function keys
of an Apple keyboard work correctly under Ubuntu:
First you have to edit the file /etc/modprobe.d/options, add
I read something about nurbs implementation in emc, i need to catch up with
that!
2010/5/5 Dave e...@dc9.tzo.com
Just a thought, but you might be able to use the Nurbs function to do
the cam profile creation for you also.
I think it is G5.2 or something similar. There is a butterfly demo
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