Chiron FZ 18 S retrofit

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17 Oct 2021 15:19 - 17 Oct 2021 15:22 #223390 by radom
I bought this Chiron VMC earlier this year and I'm almost done with my retrofit but have a couple of questions,
my setup:
7i92 + 7i77
Siemens Simodrive 690  analog +/-10V servo 4 axis + spindle
In theory machine is capable of 20m/min rapids,
4000rpm servo at 10V , 2:1 belt reduction, 10mm pitch ballscrew = 20m/min = 333.333 mm/s
is this correct then?:
OUTPUT_SCALE = 333.333
OUTPUT_MIN_LIMIT = -333.333
OUTPUT_MAX_LIMIT = 333.333
MAX_VELOCITY = 333.333
but what do I do if I don't need 20m/min, lets say I want to limit rapids to 10m/min
do I leave output_scale as it is and change min limit max limit and max velocity to 166.166?

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Last edit: 17 Oct 2021 15:22 by radom.

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17 Oct 2021 20:07 #223412 by tommylight
Replied by tommylight on topic Chiron FZ 18 S retrofit
No need, just set the max velocity in the ini file for each axis and joint, but also in the "display" and "traj" sections of the ini file.
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18 Oct 2021 10:57 #223444 by anfänger
Replied by anfänger on topic Chiron FZ 18 S retrofit
Nice another Chiron on LinuxCNC.

As Tommy said
Scales must be on 333.333 and set the max velocity on the joints/axis, traj and Ini to 166
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10 Dec 2021 20:44 - 10 Dec 2021 20:46 #228812 by radom
Replied by radom on topic Chiron FZ 18 S retrofit

Nice another Chiron on LinuxCNC.

As Tommy said
Scales must be on 333.333 and set the max velocity on the joints/axis, traj and Ini to 166
 


I have a question for you, as you have similar machine 
how do you do tool clamp/unclamp, do you use only one air solenoid? 
I have four air connections on the spindle,
bottom left - is air blast,
bottom right I have no idea what the air is doing and where is going,
top left is tool unclamp?
top right - does it force push the tool out?
I think I got ahead of myself
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Last edit: 10 Dec 2021 20:46 by radom.

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11 Dec 2021 11:16 #228866 by anfänger
Replied by anfänger on topic Chiron FZ 18 S retrofit
looks a bit different than mine, bit I never have removed the tool changer. And got a 10.000 rpm spindle.
I only have airblast and tool release, bit tool release has two lines.
Maybe your machine has a second line for airblast?
I can't see it in my schematics. If you like I can share them

Cheers Patrick

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11 Dec 2021 12:18 #228872 by radom
Replied by radom on topic Chiron FZ 18 S retrofit

looks a bit different than mine, bit I never have removed the tool changer. And got a 10.000 rpm spindle.
I only have airblast and tool release, bit tool release has two lines.
Maybe your machine has a second line for airblast?
I can't see it in my schematics. If you like I can share them

Cheers Patrick

I removed the tool changer because I don't have those fancy tool holders and half of the arms were damaged/missing
this is 7,5kw 10500rpm spindle
maybe its airblast only something is clogged who knows, I'm more interested in tool release, do you use both lines?
I know one line moves air cylinder down to release tool but I'm not sure if I should be providing air to the other line after tool change?
it looks like the other line is for forcing air cylinder up so it doesn't rest on drawbar springs
if you could share tool change schematic it would be greatly appreciated 
 

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11 Dec 2021 13:24 #228874 by anfänger
Replied by anfänger on topic Chiron FZ 18 S retrofit
I thin also pushing the cylinder up, well make the tool change more reliable. For schematics see the dropbox link below.

www.dropbox.com/sh/gytxrb7iajy0585/AABte...BtZ9Yl6xX8CzgWa?dl=0

let me know if you can access my scans.
(They are not well organized but all I got with the machine)
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