1. Forum
  3. Search

Advanced Search

Search Results (Searched for: )

  • timo
  • timo
26 Dec 2025 16:28 - 27 Dec 2025 06:22
Replied by timo on topic CNC Rotary Table with Standalone Controller for Gear Hobbing

CNC Rotary Table with Standalone Controller for Gear Hobbing

Category: Basic Configuration

Just a few thoughts.

If for professional production, take it with a lot of caution. :-) I only toyed around for hobby use.

300 rpm is fairly quick for a rotary axis. :-)
How fast can the hob run during the cut?
The machine can tilt the spindle, can it?
You do not really need the spindle position, under the condition that the spindle is brought up to speed, before you start the cut and not stopped before it is finished.
A simple incremental encoder on the spindle probably works fine. More than 100 counts per rev and it might already work.
I run the rotary open loop, as long as the motor can keep up with torque and speed, encoder on the rotary is "nice to have", but not essential.

You can even get away with a semi electronic gearing :-) for straight gears this will get rid of the computer altogether.


There is (was) an instruction on the Linux Wiki where the gear hobbing was explained.
wiki.linuxcnc.org/cgi-bin/wiki.pl?Hobbing

The spindle syncronisation is independent from x-y-z axis, as long as you do not. a) want to cut helical gears b) want to run hob shifting c) want to try hobbing wormgears with tangential hobbing.
  • tar_san
  • tar_san
26 Dec 2025 14:19 - 26 Dec 2025 15:06
Replied by tar_san on topic refClockSyncCycles="-1", I got Messages.

refClockSyncCycles="-1", I got Messages.

Category: EtherCAT

Thank you so much, Mr.Hakan.

I installed "go" package and then everything seems to be successful.

I appreciate your kindness.

I will try to connec YASKAWA Servo tomorrow.
  • Beovoxo
  • Beovoxo
26 Dec 2025 13:42
Replied by Beovoxo on topic asd-a2-e ... lcec driver?

asd-a2-e ... lcec driver?

Category: EtherCAT

I have thought of it but i havent the skills yet to build a new driver ..
the drive is
cdn.delta-emea.com/cs/download/file/4641...2_UM_EN_20201209.pdf

Ok is CSP mode only motor encoder ? i am not sure at all now..

when i started the build i planned to use
6.2.1 Position Command in PT Mode
Becurse of the feedback from the scale :)
  • endian
  • endian's Avatar
26 Dec 2025 12:44
Replied by endian on topic Following error due 2³¹ 2 147 483 648 jump to -2 147 483 648

Following error due 2³¹ 2 147 483 648 jump to -2 147 483 648

Category: EtherCAT

you have to adjust the resolution over SDOs during start up and then to reduce it over float factor in the SMs ... if you are scaling 1 / something big it will just create you crazy numbers then ... 

share config at first place ... then we can help you well
  • Sandro
  • Sandro
26 Dec 2025 12:22
Replied by Sandro on topic MonoKrom - QtPyVCP GUI for PlasmaC and Mill

MonoKrom - QtPyVCP GUI for PlasmaC and Mill

Category: QtPyVCP

Okay it is possible to pre-process the g-code manually like this:

1) Launch an instance of Monokrom (sim)
2) Navigate to the Monokrom Simulation Config Directory. Open terminal there and set environment variables
~/linuxcnc/configs/sim.monokrom/plasmac$ export CONFIG_DIR=$(pwd)
~/linuxcnc/configs/sim.monokrom/plasmac$ export INI_FILE_NAME=$(pwd)/xyz.ini

3) Call preprocessor in terminal with the input.ngc processed by the SheetCam PlasmaC Post
~/linuxcnc/configs/sim.monokrom/plasmac$ python3 plasma_gcode_preprocessor.py input.ngc > processed.ngc

The output is the processed.ngc. The first few lines are below:
Filter name: from-ini func: <function from_ini at 0x7ff0a03176a0>
(--------------------------------------------------)
(            Plasma G-Code Preprocessor            )
(                 00.30                            )
(--------------------------------------------------)
;inputs
#<ucs_x_offset> = [#5221 + [[#5220-1] * 20]]
#<ucs_y_offset> = [#5222 + [[#5220-1] * 20]]
#<ucs_r_offset> = [#5230 + [[#5220-1] * 20]]
#<array_x_offset> = 0.0
#<array_y_offset> = 0.0
#<array_columns> = 1
#<array_rows> = 1
...

This is why I get the error in input.ngc line 1: Unknown word where unary operation could be. The first line contains "Filter name: from-ini func: <function from_ini at 0x7ff0a03176a0>".

    
  • automata
  • automata
26 Dec 2025 09:18
Replied by automata on topic refClockSyncCycles="-1", I got Messages.

refClockSyncCycles="-1", I got Messages.

Category: EtherCAT

 It seems user fdarling has got yaskawa drives working with ethercat and lcec based on this response on the original sittner/linuxcnc-ethercat repo.

github.com/sittner/linuxcnc-ethercat/issues/121

Based on the original suggestions in github.com/nylon7/Igh-Ethercat-master/bl...ples/user/main_yas.c, I also have gotten yaskawa drives to work with linuxcnc without using lcec.
I have attached the program to this mail. 

File Attachment:

File Name: yaskawa_ha...rcat.zip
File Size:4 KB

The next step is to make a separate yaskawa driver in lcec like delta ASDA or omron drives to service yaskawa sigma7 drives.

-automata 
  • jameslc15
  • jameslc15
26 Dec 2025 09:14
No speed control on xhc-wb04b-6 pendant on 3 axis router was created by jameslc15

No speed control on xhc-wb04b-6 pendant on 3 axis router

Category: Basic Configuration

Hello all

I installed a 0-10v signal from my MESA 7i77 board to the vfd to control rpm and my XHC-W04B-6 pendant will enable the spindle but wont tell the spindle to turn at default spindle speed set in the ini file .  Any help would be appreciated.

Regards 
James 
  • DoWerna
  • DoWerna's Avatar
26 Dec 2025 08:17
CNC Rotary Table with Standalone Controller for Gear Hobbing was created by DoWerna

CNC Rotary Table with Standalone Controller for Gear Hobbing

Category: Basic Configuration

Hello,
I already have a Maho MH500 and a cycloidal lathe retrofitted to LinuxCNC, so I do have some practical experience with LinuxCNC retrofits.Now a colleague has approached me with the following idea:
He wants to build a CNC rotary table for his Maho MH600 in order to hob gears (gear hobbing).The idea is a rotary table with an “electronic gearbox”, synchronized to the machine spindle of the Maho.Key requirements:
  • Maximum rotary table speed: ~300 rpm
  • Servo or stepper drive with a gearbox, approx. 1:3
  • The control should run fully standalone
  • Only spindle position and spindle speed are taken from the spindle encoder
  • The rotary table is synchronized to the spindle via electronic gearing
Questions / design considerations:
  • What is the best choice of encoder for this application?
    Probably an absolute encoder? or better incremental for a better dynamic?
  • Servo motor will most likely be NEMA 42 size
  • Encoder setup ideas:
    • Incremental encoder on the spindle
    • Encoder directly on the rotary table
    • Possibly an additional encoder on the motor
  • How should the control and feedback loops be structured for this setup?
I would appreciate any recommendations regarding:
  • encoder types and placement
  • control loop architecture
  • practical LinuxCNC / Mesa hardware solutions for this kind of standalone rotary table
  • MTTI
  • MTTI's Avatar
26 Dec 2025 07:37
Replied by MTTI on topic Ohmic Probe + Material Height Feature Request

Ohmic Probe + Material Height Feature Request

Category: Plasmac

Perfect, thanks!!
  • ts
  • ts
26 Dec 2025 03:28
Replied by ts on topic Following error due 2³¹ 2 147 483 648 jump to -2 147 483 648

Following error due 2³¹ 2 147 483 648 jump to -2 147 483 648

Category: EtherCAT

Thanks for your replies.
in my case delta etheecat asda a3e give me resolution om the motor at output on ethercat. In asda soft avaible option mul/div parameters for recalculation encodee output, but every reboot servodrive thats parameters became to 1. So i calculated (all mechanical reduction and motors encoder resolution) scale-pos, it about 9 500 000 to receive correct move command execution. 

Of cpurse, maybe right way is to put parameters asda delta div/mul to scaledown , but may be there are some other way?
  • ihavenofish
  • ihavenofish
26 Dec 2025 03:01
Replied by ihavenofish on topic lemontart - a call for help with s curve, ui's, and all the cool toys

lemontart - a call for help with s curve, ui's, and all the cool toys

Category: General LinuxCNC Questions

Not yet officially. Maybe by feb. Machine should launch late jan.
  • grandixximo
  • grandixximo's Avatar
26 Dec 2025 02:46 - 26 Dec 2025 02:47
Replied by grandixximo on topic lemontart - a call for help with s curve, ui's, and all the cool toys

lemontart - a call for help with s curve, ui's, and all the cool toys

Category: General LinuxCNC Questions

@ ihavenofish
Did you already put the bounty up for the jerk control?
  • PCW
  • PCW's Avatar
26 Dec 2025 02:36
Replied by PCW on topic Mesa 6i25 not working?

Mesa 6i25 not working?

Category: Driver Boards

The lspci report indicates the the board is accessible (as a 5I25)

Make sure that you leave the 6I25 jumpered for 5I25 mode or you will have access issues.
  • grandixximo
  • grandixximo's Avatar
26 Dec 2025 01:34 - 26 Dec 2025 02:48
Replied by grandixximo on topic How to fix "Queue is not empty after probing"

How to fix "Queue is not empty after probing"

Category: General LinuxCNC Questions

@ abs32

can you share a screenshot after running on your system

latency-histogram

for a few minutes with a few glxgears running?
  • tommylight
  • tommylight's Avatar
26 Dec 2025 01:12
Replied by tommylight on topic Mesa 6i25 not working?

Mesa 6i25 not working?

Category: Driver Boards

From your lspci
02:00.0 DPIO module [1100]: Device [2718:5125] (rev 01)
	Subsystem: Device [2718:5125]
	Control: I/O- Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx-
	Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Interrupt: pin A routed to IRQ 11
	Region 0: Memory at f7e00000 (32-bit, non-prefetchable) [size=64K]
That is the 5i25.
Displaying 121 - 135 out of 20714 results.
  1. Forum
  3. Search
Time to create page: 0.191 seconds
Powered by Kunena Forum