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Author Topic: Bridgeport is getting an overhaul  (Read 19247 times)

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Offline Hood

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Re: Bridgeport is getting an overhaul
« Reply #30 on: September 07, 2011, 04:15:51 PM »
Hi Amir, not really sure what you are meaning.
The servos encoder have 2000 line (8000 counts per rev) and the gearing on the axis is 2.5:1 with 5mm pitch screws so resolution will be 0.00025mm and I am hoping to get the tuning so I have a following error of 20 counts/20mS so that would mean the axis would trip if it was ever 0.005mm out of position.
Is that what you mean?
Hood
Re: Bridgeport is getting an overhaul
« Reply #31 on: September 07, 2011, 04:18:34 PM »
yes
do you used c5 ballscrew in this machine?
and pls brand?
Amir
**Even a clock that does not work is right twice a day**

Offline Hood

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Re: Bridgeport is getting an overhaul
« Reply #32 on: September 07, 2011, 04:20:51 PM »
It has the original Bridgeport ballscrews and I have no idea what class they are.
Hood

Offline Chaoticone

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Re: Bridgeport is getting an overhaul
« Reply #33 on: September 07, 2011, 04:33:18 PM »
 :o  Looking good Hood!!!

Brett
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My guard dog is not what you need to worry about!

Offline Hood

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Re: Bridgeport is getting an overhaul
« Reply #34 on: September 07, 2011, 04:50:43 PM »
Thanks Brett.
Hood

Offline Sam

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Re: Bridgeport is getting an overhaul
« Reply #35 on: September 07, 2011, 04:55:48 PM »
Looks great! Good wiring job, too!
"CONFIDENCE: it's the feeling you experience before you fully understand the situation."

Offline Hood

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Re: Bridgeport is getting an overhaul
« Reply #36 on: September 07, 2011, 05:04:52 PM »
Thanks Sam, each machine I do gets a bit neater in the wiring.
Hood
Re: Bridgeport is getting an overhaul
« Reply #37 on: September 07, 2011, 05:23:26 PM »
The servos encoder have 2000 line (8000 counts per rev) and the gearing on the axis is 2.5:1 with 5mm pitch screws so resolution will be 0.00025mm and I am hoping to get the tuning so I have a following error of 20 counts/20mS so that would mean the axis would trip if it was ever 0.005mm out of position.
Hood

If you have been reached 5um accuracy then i must say congratulations and happy for you.
Amir
**Even a clock that does not work is right twice a day**

Offline Hood

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Re: Bridgeport is getting an overhaul
« Reply #38 on: September 07, 2011, 05:27:24 PM »
I dont think I will get anywhere near that accuracy from the machine, that is the resolution and accuracy of the servo system, there is a lot of mechanics after that and its a Bridgeport so not exactly rigid in the first place ;D

Hood

Offline Hood

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Re: Bridgeport is getting an overhaul
« Reply #39 on: September 09, 2011, 06:26:26 AM »
Still only have single phase connected but have tested out the Z Axis, its looking good with no backlash at all. In the vid linked below I am doing a  move of 6mm at a rapid of 5m/min.
http://www.youtube.com/watch?v=RTldulUtIOg

Hood