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  • slowpoke
  • slowpoke
03 Dec 2024 14:00
Replied by slowpoke on topic LinuxCNC for lathe questions

LinuxCNC for lathe questions

Category: General LinuxCNC Questions

If you install Andy's "Lathe Macros", you get a set of canned cycles to do all the typical lathe ops, including threading with simple conversational interface. I beleive it works on most of the GUI's.
github.com/andypugh/LatheMacros

I of course use Gmoccapy as I like it modal nature.

 I will definitely check this out. I don't suppose there is a demonstration video? 
I'm trying to visualize this, especially WRT the axis GUI ( perhaps that's the problem?), and if I need physical buttons how many?
 If Axis is not the way to go then need to think about touchy vs. Gmocapy.

My hardware can't get here fast enough.
  • tommylight
  • tommylight's Avatar
03 Dec 2024 13:53
Replied by tommylight on topic 10.5 x 25 cnc plasma table retrofit

10.5 x 25 cnc plasma table retrofit

Category: Computers and Hardware

Move it to plasma section or to show your stuff?
  • RotarySMP
  • RotarySMP's Avatar
03 Dec 2024 13:48
Replied by RotarySMP on topic LinuxCNC for lathe questions

LinuxCNC for lathe questions

Category: General LinuxCNC Questions

If you install Andy's "Lathe Macros", you get a set of canned cycles to do all the typical lathe ops, including threading with simple conversational interface. I beleive it works on most of the GUI's.
github.com/andypugh/LatheMacros

I of course use Gmoccapy as I like it modal nature.
  • SOLD
  • SOLD
03 Dec 2024 13:43
Replied by SOLD on topic AX58100

AX58100

Category: EtherCAT

Now I unplug the TXS0108EPWR and connect it directly to mcu with R1.5k pull up to 5V. it work 

I can find the counting up when the motor shaft is rotated, but sometimes when I let go of the rotation the numbers will continue to count until the shaft is rotated again.
Another problem is that the numbers will only count one way even when the motor is rotated in reverse direction. This may be due to a faulty Z phase for the index. I am investigating further.
 
  • Aciera
  • Aciera's Avatar
03 Dec 2024 13:42

Classic Ladder not working with LinuxCNC Rio

Category: ClassicLadder

Re: Failed to load module "atk-bridge"
Not sure how relevant that error message is but according to this
dev1galaxy.org/viewtopic.php?id=1815
you could maybe try:
sudo apt install libatk-adaptor
  • RotarySMP
  • RotarySMP's Avatar
03 Dec 2024 13:42
Replied by RotarySMP on topic Tip on how to plan a machine

Tip on how to plan a machine

Category: General LinuxCNC Questions

I do wiring diagrams. For my lathe I used Qelectrotech. It is pretty clunky, but works.
  • KMA
  • KMA
03 Dec 2024 13:29

7i95T with 7i74 Interface and 7i87 + 7i83

Category: Driver Boards

Hello,

for my CNC-Mill i use a Mesa 7i95T card. For extension i bought a 7i74 Interface card and a 7i87 (analog input) + 7i83I (analog servo interface). The Firmware of the 7i95T is 7i95t_d.bin. In this Firmware the P1 Port has only IO Ports (attachment).
On the Mesa Website -> 7I95T -> Software was no Firmware for use with 7i74.
Is there a firmware available for the 7i95T with a 7i74 as a P1 Daughter Card?
 
  • tommylight
  • tommylight's Avatar
03 Dec 2024 12:11

Hello (First post), please send me in the right direction

Category: LinuxCNC Documents

The latest is the 2.9.3 ISO that is linked in the Downloads page.
  • Mitch66
  • Mitch66
03 Dec 2024 11:26

Hello (First post), please send me in the right direction

Category: LinuxCNC Documents

This is my first post too and I am a complete beginner as well. I am working through the John Hildreth series of videos which are now 6 years old. He uses Debian Wheezy but advises that one should use the most up to date version. If I follow the link above will that now download the latest version of Debian which I think is Bookworm, as well as LCNC? I have been promising my self that I will learn Linux and as I am a CNC hobbyist this is the start of an exciting adventure.
  • Ahmed.emara
  • Ahmed.emara
03 Dec 2024 11:23
Replied by Ahmed.emara on topic Ethercat + step/dir signals

Ethercat + step/dir signals

Category: EtherCAT

i found this motor ( Lichuan Ethercat Nema23 closed loop stepper motor 1Nm 3A LC57H256 2phase step engine with driver CL3-E57H for CNC kit ) i think it will be suitable but i want to check if its xml is easily configurable or i if there is someone shared its xml configuration
  • D Jensen
  • D Jensen
03 Dec 2024 11:19
Replied by D Jensen on topic Retrofitting a 1986 Maho 400E

Retrofitting a 1986 Maho 400E

Category: Milling Machines

Wow. Lots of questions!
I have the original quote from November 1982. Some of the castings have 1979 on them as I recall.
$A 89,000 for the machine
$A 600 for the overarm
$A 15,000 for the rotary table
$A 4,000 for the tooling
$A 6,000 for the printer/reader
So about $A 114,600 all up. Looks like the sale went through in July 83.
From Eric James Industries here in Sydney.

The replacement of the Philips 6600 controller with the Heidenhain TNC 155 was done by them in 1987 for about $A 19,000 plus tax.

I've just placed the full manual here for all to read along with the series of videos there that let you know a lot about my machine:

drive.google.com/drive/folders/1NVXGKyaN...cWKjsMfe?usp=sharing

I've marked it up with the things particular to my machine. The lubricants are on page 7.06-1
I spoke to the Gulf and Western rep here and he went away to double check the data for Kluber and was satisfied their Super Blue grease was equivalent or better. It wasn't worth buying all the other greases since I have a 4 liter can of it. This is overkill for all the rest. So I fully stripped the spindle and repacked it. It is the type in the diagrams I sent. So it is typical of a precision grinder spindle. You do need to go through the run in procedure as the spindle runs hot at every speed.
The run time clock on my machine is hard wired through the spindle motor auxiliary contacts, so it runs when the spindle does.It had 4,000 hours on it so the book says repack it.
My machine is much heavier than yours so it's max speed is 2500 rev/min. But it had been limited to 1250 in the parameter list as the star delta timer needed about 3.5 seconds. they hadn't programed things properly so it was possible for the machine to start milling in star mode. I've reprogrammed the Izumi PLC that does the gear change so it stops that happening.
I haven't pulled the horizontal spindle apart. It looks to have the same quill assembly, but there is no manual hand wheel on the Y slide for it. The rack teeth are there on the quill is there but you have to take a plate off the side and undo the clamp by hand. I cant get the quill to move and haven't really tried.
I had some trouble making the photos small enough to attach today. I might try again later. On mine the trick to get the hydraulic ram off the retractor is that the thread has Loctite on it. I think they note it in the manual that you have to heat it. But that is to melt the Loctite, not to overcome some preload.  i used my solder reflow hot air on it, while applying torque and it suddenly came free. you diagram is the same in essense, but the way it assembles is quite different
I think Maho has a rule that they never make 2 identical machines.
My tool holders are ISO NT40 so I have to cut a groove in the parallel part for the clamping claws. How to do it is in the manual above. So there is no pull stud.
The section on the spindle i translated from German thanks to Google. But then I translated it again into understandable English.
My machine is an orphan having the Heidenhain controller. But I think my axes orientation is the more usual. It seems simpler to me to just program the horizontal axis as G18. That is the way Heidenhain do it in their G code examples. Why would the standard have G17, G18, and G19  otherwise?
With Heidenhain they seek for index mark open loop on the encoders. That speed is preset in the parameters for a particular machine. I think that velocity is controlled by the tachos. After finding the index marks there are relays that pull in for each axis and the Heidenhain  go closed loop with the encoders.
I watched your video. My miscible oil seems much higher concentration than you run. I'm using 10:1 water to oil and it looks like creamy milk. hard to tell from the video but you seem to run the cutters faster than the equation I use. I have similar problems with boring. Usually i put a pilot drill hole in first as the over center flute on a slot drill doesn't always seem to work. Heidenhain does that routinely with canned cycles for pockets etc.

More later.
Cheers,
David
  • Ahmed.emara
  • Ahmed.emara
03 Dec 2024 11:18

Lichuan Ethercat Nema23 closed loop stepper motor XML configuration

Category: EtherCAT

hello guys 

i am going to but Lichuan Ethercat Nema23 closed loop stepper motor with driver CL3-E57H
where can i find its XML configuration ?
  • SOLD
  • SOLD
03 Dec 2024 10:18
Replied by SOLD on topic AX58100

AX58100

Category: EtherCAT

When the motor shaft rotates, the steps are counted in the encpos but not continuously. I am short-circuiting without passing TXS0108EPWR to test again.
  • Hakan
  • Hakan
03 Dec 2024 09:56
Replied by Hakan on topic AX58100

AX58100

Category: EtherCAT

But don't work in linuxcnc when there is a problem. First, work in the MCU so you eliminate many steps that can be wrong. And use the debugger.

Leave the scale statement commented out. It is set to 1.0 in the class as default.
When you set it to 2000, there are 2000 per revolution, or 500 pulses. One revolution is 1.0. Set scale to 1.0 to see every step more easily.

If it does count up and down, it works, doesn't it. What exactly doesn't work?
  • nigelh
  • nigelh's Avatar
03 Dec 2024 09:48 - 03 Dec 2024 15:11

Wiring Mesa 7i95t inputs in parallel with DRO

Category: Basic Configuration

Hi,
Thanks to much help my motion system is now moving about nicely so I have moved on and hit a new problems and google isn't turning up any previous work on the subject to plagerise.

I have a DRO (magnetic) and I would like to keep it but also put the encoders into LinuxCNC. (have your cake and eat it so to speak)
However being a bit of an electronic engineer (retired industrial physicist) I worry about loads and impedences.
The 7i95t manual section on the high speed encoders ofers me:
   DIFFERENTIAL MODE IMPEDANCE the min=118 max=122 Ohms
and I'm perplexed. I suspect I am thinking of something different.
I guess I could put a unity gain buffer amplifier in each pair but that seems OTT.
Do Mesa do schematics? I can't find any. Anybody done this? Pointers? ELI75

And also thinking of those encoder ports...
I am using Axis5 to do PWM to control the spindle but I'd like to read spindle speed back to the control too.
If I put a second sensor on the existing chopper disk that drives the front panel display can I wire that into the encoder and somehow get something out I can crunch into rpm? (I have discovered writing your own HAL things in C so I'm a happy bunny there).
The port says 3MHz rate and I'd only need about 5Kpps pulses counted. Again I could fake up a B pulse by just delaying sensor out but again a lot of bother for something that can probably be configured round.
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