Advanced Search

Search Results (Searched for: )

  • timo
  • timo
30 Nov 2024 08:05
Replied by timo on topic Tip on how to plan a machine

Tip on how to plan a machine

Category: General LinuxCNC Questions

So that is basically a table first, no big graphical overview?

Control panels often look very daunting. :-)
Rule No. 1 seems to be: Panel must be twice as big as you would initially think!
  • gitin
  • gitin
30 Nov 2024 07:59

Help: How to run X and A axis with different feed rates simultaneously?

Category: G&M Codes

If you need to wind a large number of identical coils, it is more profitable to make a winding device.
To do this, you need 1 asynchronous motor, 1 VFD and a tension sensor.
If you need it, I can help you with information.
There are more than 100 we in the company.
A polypropylene tape is wound.
You can do it yourself, it's simple.
If you have a CNC machine, you can use it.
This is translated by Google, if something is wrong, I apologize.


G17 G21 G40 G49 G54 G80 G90 G94
g0
z50 (Z is only for visualization in the simulator, not needed for work)
x0
y0
a0
#1 = 50 (radius of the mandrel mm)
#2 = 300 (length of the tube to be wound mm)
#3 = 100 (material speed mm/s)
#4 = 6.35 (material width mm)
#5 = 0.14 (material thickness mm)
#6 = 150 (number of turns)
#7 = [#6*360] (deg.)
#8 = [#2-#4]
G1 F120
O100 while [ #<_a> Lt #7]
G90
#1 = [#1+#5]
Z #1
G1 F [#4/3.1415/2/#1*#3*60] (speed X mm/min)
G91
O101 while [#<_x> lt #8 and #<_a> Lt #7]
X0.635 A36
O101 ENDWHILE
G90
#1 = [#1+#5]
Z #1
G1 F [#4/3.1415/2/#1*#3*60] (speed X mm/min)
G91
O102 while [#<_x> gt 0 and #<_a> Lt #7]
X-0.635 A36
O102 ENDWHILE
G90
O100 ENDWHILE
G90
M2
  • tommylight
  • tommylight's Avatar
30 Nov 2024 07:51
Replied by tommylight on topic Building a chain driven Plasma table.

Building a chain driven Plasma table.

Category: General LinuxCNC Questions

150*3.1415=471.225mm of surface times material thickness times 7850kg/m3
That gives you the weight, and at 6 meter length, even 1mm thick walls would be 22KG!
At 4mm, that is 88Kg, that have to be turned plus the friction and the chuck weight.
You can make it work with 1:4 reduction, but it would have to be at miserably low acceleration.
Do you have a 3D printer? Print some pulleys, find a HTD5 belt, at least 15mm wide, use a lot of walls to enforce the mount holes on pulleys.
  • tommylight
  • tommylight's Avatar
30 Nov 2024 07:39

Issue with Attaching BME280 Sensor to Raspberry Pi 4B on LinuxCNC

Category: General LinuxCNC Questions

No idea if there is a driver for I2C in LinuxCNC, maybe searching on github project page would show if there is anything about it there.
  • tommylight
  • tommylight's Avatar
30 Nov 2024 07:36
Replied by tommylight on topic CamBam Problems

CamBam Problems

Category: CAD CAM

Nope, i do not use it.
Every now and then i use FreeCAD, i will have to learn the PATH workbench, whenever i get a chance.
  • Masa
  • Masa
30 Nov 2024 07:14
Replied by Masa on topic Homing trouble

Homing trouble

Category: General LinuxCNC Questions

Hello everyone.
Since there doesn't seem to be a clear solution, I have a question for those involved in the development of LinuxCNC.

Are the 2.8.3 pid and 2.9.3 pid modules the same?

Are they different?

Can I overwrite the 2.8.3 pid module in 2.9.3 and use it?

Would it be better to update the whole thing to 2.8.x?

Thank you in advance.
  • tommylight
  • tommylight's Avatar
30 Nov 2024 06:01
  • tommylight
  • tommylight's Avatar
30 Nov 2024 05:57
Replied by tommylight on topic New laser components

New laser components

Category: Plasma & Laser

Any news about mesa hardware and raster engraving?

What do you mean by this?
Mesa works for everything with LinuxCNC, so it also works for raster engraving.
As for rastering, more info her and new configs that will stop laser/PWM on ESC or stop execution or running gcode:
forum.linuxcnc.org/show-your-stuff/46752...ver-etcher-scratcher
And here are the STL files just in case you want to build such a machine
www.printables.com/model/876702-diy-cnc-...-writing-logos-etc-o
  • tommylight
  • tommylight's Avatar
30 Nov 2024 05:55
Replied by tommylight on topic Installation after new computer

Installation after new computer

Category: Installing LinuxCNC

On Mint 22 you will have to compile LinuxCNC from sources, otherwise it does not work.
Linux Mint Debian Edition 6 works, install reboot, then in a terminal
sudo apt update
sudo apt install linuxcnc-uspace
  • timo
  • timo
30 Nov 2024 05:27
Tip on how to plan a machine was created by timo

Tip on how to plan a machine

Category: General LinuxCNC Questions

Hello,

i was quite fed up with undocumented components on my 2nd hand machine.
That is why I ripped it apart and decided to re-do the complete electric syste.

Now I was thinking it is a good idea to make some sort of wiring diagram, before starting the actual work.
This is to help adding more functions in the future, helps with repair. ( I want to avoid to have to reverse engineer my own installation )
From another thread I learned that this kind of plan might become also helpful to create a structured .hal and .ini file

Just to give an idea what I am up to.

A simple x-y-z mill, optional rotary axis a or c, (maybe rigid tapping, given the low torque spindle probably useless), MPG

Components that I have so far:
  • PC
  • Mesa Card
  • 3 open loop stepper drivers
  • 3 stepper motors from old system
  • 1 closed loop stepper with integrated driver (for rotary axis)
  • Power supply 80V DC
  • MPG (wires single switches, "no brain")
  • BLDC spindle with driver (from old system) 0-10V speed control (can be pluged to MESA card)
  • x-y-z proximity switches
  • Temp switch for spindle overheat
  • (optional) coolant pump
  • (optional) spindle encoder
I am not so much looking for a wiring instruction, more for some advise how to document a system like this. (pen and paper, some free software?)

Greetings Timo


 
  • timo
  • timo
30 Nov 2024 04:51
Replied by timo on topic Tips for making some sort of plan.

Tips for making some sort of plan.

Category: General LinuxCNC Questions

Common issue I would say.
  • Some of the BOB have slow (budged) Optocouplers, (you could check datasheets) 
  • the parallel port is not particular fast
  • linux cnc servo thread can limit speed if set high
  • Encoders usually also have a speed limit, (becomes an issue for high speed spindles)
Some people try to use an encoder with less counts which works to some extend.
My system was hopeless; even with a 100 ppr encoder @600rpm.
Loosing the ocasional signal gave me a lot of trouble.  
After I spent the money on one of the typical FPGA cards, the issue disappeared entirely.

Greetings Timo
 
  • vre
  • vre
30 Nov 2024 04:44
Replied by vre on topic New laser components

New laser components

Category: Plasma & Laser

Any news about mesa hardware and raster engraving?
Instead of mesa can use an orange pi 5 that has low jitter and IOs for raster engraving?
  • dileepa.ruwanpathirana@gmail.com
  • dileepa.ruwanpathirana@gmail.com
30 Nov 2024 04:26
Tips for making some sort of plan. was created by dileepa.ruwanpathirana@gmail.com

Tips for making some sort of plan.

Category: General LinuxCNC Questions

Hi Everyone,I’m new to LinuxCNC but have prior experience with Mach3. I’ve set up a lathe using a cheap Chinese breakout board (BOB), and while everything works, I’m facing an issue with the rotary encoder.As the spindle speed increases, the encoder’s position stops updating at higher speeds. I’ve checked this using the HAL meter, and it shows no response beyond a certain speed. However, when the spindle slows down, the encoder starts responding again.I’ve ruled out magnetic interference from the VFD because the same behavior occurs when I spin the encoder using an electric hand drill.Could this be due to:1. The encoder type (I believe it’s incremental)?2. A limitation of the breakout board (even though I’ve seen others successfully use the same board for threading, e.g., on the “GWBM” YouTube channel)?I’d really appreciate any insights or advice on troubleshooting this issue.Thank you!
  • PCW
  • PCW's Avatar
30 Nov 2024 04:15
Replied by PCW on topic Installation after new computer

Installation after new computer

Category: Installing LinuxCNC

I would update to the latest normal release (2.9.3)
I don't think there are any major hal/ini file changes
between 2.8 and 2.9
Displaying 20401 - 20415 out of 22501 results.
Time to create page: 0.923 seconds
Powered by Kunena Forum