Testing new features on linuxcnc
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Testing new features on linuxcnc
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Topic: Testing new features on linuxcnc (Read 2563 times))
Rob M
GTA Senior Contributor
Posts: 6304
Re: Testing new features on linuxcnc
«
Reply #20 on:
March 12, 2017, 04:57:47 PM »
did u make the acme nut?? im surprised theres any wear
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Louisiana
MJP
Member 4400+Fpe Club
GTA Senior Contributor
Posts: 2136
I'll make it real. For me.
Real Name: Marko
Re: Testing new features on linuxcnc
«
Reply #21 on:
March 12, 2017, 06:49:11 PM »
Well not surprising, it's the original nut and leadscrew, dates back to 1948. So it has has some work done with it.
New ones are ballscrew and ballnut.
Marko
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Finland
Impossible just takes a little bit longer to achieve.
If an engineer is not presented with a suitable problem, they will create their own!
Rob M
GTA Senior Contributor
Posts: 6304
Re: Testing new features on linuxcnc
«
Reply #22 on:
March 12, 2017, 07:21:21 PM »
makes sense
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Louisiana
MJP
Member 4400+Fpe Club
GTA Senior Contributor
Posts: 2136
I'll make it real. For me.
Real Name: Marko
Re: Testing new features on linuxcnc
«
Reply #23 on:
March 13, 2017, 01:12:08 PM »
New parts going in, crimped the old bearing retainer to the new screw.
Just need to make the motor mount for direct drive and it's all done again.
Pic of the screw in its place.
Marko
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Finland
Impossible just takes a little bit longer to achieve.
If an engineer is not presented with a suitable problem, they will create their own!
Rob M
GTA Senior Contributor
Posts: 6304
Re: Testing new features on linuxcnc
«
Reply #24 on:
March 13, 2017, 01:15:25 PM »
shiny @!
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Louisiana
MJP
Member 4400+Fpe Club
GTA Senior Contributor
Posts: 2136
I'll make it real. For me.
Real Name: Marko
Re: Testing new features on linuxcnc
«
Reply #25 on:
March 14, 2017, 03:17:10 PM »
Got the mill working today with direct drive to the screw instead the old t belt system. Well it's fast, really fast. Rapid on X axis, was around 295mm/min before and now I can drive it 2300mm/min without loosing steps!
Need to change the y axis screw as soon as it's possible, I already have the screw and ballnut.
Marko
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Finland
Impossible just takes a little bit longer to achieve.
If an engineer is not presented with a suitable problem, they will create their own!
wimpanzee
Expert
Posts: 1896
yes
Re: Testing new features on linuxcnc
«
Reply #26 on:
March 14, 2017, 03:24:55 PM »
Thank you for sharing.
#lovelinux
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Rob M
GTA Senior Contributor
Posts: 6304
Re: Testing new features on linuxcnc
«
Reply #27 on:
March 14, 2017, 04:13:20 PM »
question , how will u change the X axis feed rate now?? im not a programmer so just wondering> will it self calibrate
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Louisiana
MJP
Member 4400+Fpe Club
GTA Senior Contributor
Posts: 2136
I'll make it real. For me.
Real Name: Marko
Re: Testing new features on linuxcnc
«
Reply #28 on:
March 14, 2017, 04:31:03 PM »
Feed rate depends on the job, when milling it's same for x and y axis, only the rapid moves when positioning before cuts are specified by parameters for each axis. X rapid moves are now just faster that Y, it's all in the axis parameters, max speed, backlash, and so on.
When programming a part you give a cutting speed for each tool you use cording to the material you want to cut.
Marko
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Finland
Impossible just takes a little bit longer to achieve.
If an engineer is not presented with a suitable problem, they will create their own!
Rob M
GTA Senior Contributor
Posts: 6304
Re: Testing new features on linuxcnc
«
Reply #29 on:
March 14, 2017, 04:52:06 PM »
i worded it wrong.. how does the computer know that the X axis motor is now capable of moving faster than it was before?
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Louisiana
Rob M
GTA Senior Contributor
Posts: 6304
Re: Testing new features on linuxcnc
«
Reply #30 on:
March 14, 2017, 04:52:56 PM »
i know the feed rates will be the same , just not sure how the computer knows a stepper is capable of going faster.
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Louisiana
MJP
Member 4400+Fpe Club
GTA Senior Contributor
Posts: 2136
I'll make it real. For me.
Real Name: Marko
Re: Testing new features on linuxcnc
«
Reply #31 on:
March 14, 2017, 06:01:46 PM »
Ah, I see. Well the speed comes from two things, thread pitch and gear reduction from the motor to the screw. Now I have direct drive and 10mm pitch opposed to the previous 5mm and 1:2 reduction for so much drag was on the screw.
I needed to test the axis for speed how fast it could go before the stepped stalls. And when I got there then back down 20% and you should be good to go.
Then you set this to the parameters for that axis. Steps per mm of travel and speed.
Marko
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Finland
Impossible just takes a little bit longer to achieve.
If an engineer is not presented with a suitable problem, they will create their own!
Rob M
GTA Senior Contributor
Posts: 6304
Re: Testing new features on linuxcnc
«
Reply #32 on:
March 14, 2017, 06:08:12 PM »
AHHA... theres the answer..
figured something needed to be done.. nice work , thanks for answering.
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Louisiana
MJP
Member 4400+Fpe Club
GTA Senior Contributor
Posts: 2136
I'll make it real. For me.
Real Name: Marko
Re: Testing new features on linuxcnc
«
Reply #33 on:
March 18, 2017, 05:00:15 PM »
Projects and then some, mounted a Guangdong happy people encoder on a Italian dc servo motor, and going to drive it with Hungarian amplifier. Everything gobled together by a crazy Finn. It's multi national endeavor so to speak.
Atleas the oscilloscope showed nice signal out of the twelve dollar encoder.
Encoder mounted on old mounting adapter with a new adapter.
Marko
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Finland
Impossible just takes a little bit longer to achieve.
If an engineer is not presented with a suitable problem, they will create their own!
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All Springer/NP/PCP Air Gun Discussion General
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Testing new features on linuxcnc