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  • Aciera
  • Aciera's Avatar
26 Jul 2024 05:33

difference between machine coordinate systems and CAD software

Category: AXIS

Machine coordinates are always defined with respect to tool movement on the workpiece regardless if it's the spindle or the workpiece that moves. So presuming that the blue coordinate system represents the tool movement on the workpiece then that is a common setup for a mill. Having the X axis pointing to the left in the CAD system is not wrong (you just have to rotate the part on the machine table) but a bit unusual.
  • Aciera
  • Aciera's Avatar
26 Jul 2024 05:23 - 26 Jul 2024 05:48
Replied by Aciera on topic xyzab to xyzac

xyzab to xyzac

Category: QtPyVCP

[edit]
Nevermind, seems @Lcvette got it.
  • G0G53Z148
  • G0G53Z148's Avatar
26 Jul 2024 03:08
Replied by G0G53Z148 on topic Aktuelle hardware mit PCI

Aktuelle hardware mit PCI

Category: Deutsch

ihr deutsch ist schon gut wenn es nicht aus google kommt sogar sehr gut für eine beginner :)

jetzt läuft die 5i25 und 7i76 kombi ja

ich warte ab und lege einen reserveplan auf :) danke für die hilfe die anderen karten muss ich mir erst ansehen
  • OT-CNC
  • OT-CNC
26 Jul 2024 02:56
Replied by OT-CNC on topic Yaskawa incremental encoder and Mesa 7i48

Yaskawa incremental encoder and Mesa 7i48

Category: Driver Boards

If you are looking to drive this motor with a generic drive, in my case an AMC AB30A200I, I gave up on the UTOPI encoder and fitted a US digital EC35 that has digital hall with 8 pole option. It works smooth CW/CCW just past 3000 rpm but have possible torque ripple at very slow rpm. I was getting the same slow speed behavior with the stock encoder. Is this possibly due to trapezoidal commutation? Drive manufacturer couldn't enlighten me further...
The test setup uses another encoder in the video, disregard that. You can hear the clicking and I'd like to know if that's normal with trapezoidal commutation.
I wanted to share this in case you are thinking of going a similar route. I'm just not 100% happy with the outcome.

  • OT-CNC
  • OT-CNC
26 Jul 2024 02:11
Replied by OT-CNC on topic 7i77 encoder split to amp and servo

7i77 encoder split to amp and servo

Category: Driver Boards

I ended up using the encoder y board from mesa which seems to be working fine with the addition of having swapped the servo drive to an isolated version. 
  • OT-CNC
  • OT-CNC
26 Jul 2024 01:58
Replied by OT-CNC on topic 7i77 isol

7i77 isol

Category: Driver Boards

I wanted to report back that the solution here was to switch to an isolated version of the amc servo drive. 
In addition I have added chockes/toroids as suggested.
 
  • vre
  • vre
26 Jul 2024 01:13

how to make my own custom page for qtdragon_hd?

Category: Qtvcp

How can add a latch button with led like the flood on/off and mist on/off from qtdesigner?
  • tommylight
  • tommylight's Avatar
26 Jul 2024 01:07

difference between machine coordinate systems and CAD software

Category: AXIS

Your fist picture = you are looking at the part from behind, any particular reason for it?
Moving table and moving head are two different types of machines, despite being the same functionally, but very different when looking at them and using them, i have a feeling you are mixing these.
  • onceloved
  • onceloved's Avatar
26 Jul 2024 00:41
xyzab to xyzac was created by onceloved

xyzab to xyzac

Category: QtPyVCP

How to convert the B axis to the C axis? Including pictures. The default is XYZAB. I need XYZAC.
  • my1987toyota
  • my1987toyota's Avatar
26 Jul 2024 00:35
Replied by my1987toyota on topic Mostly 3D Printed CNC Foam cutter

Mostly 3D Printed CNC Foam cutter

Category: CNC Machines

 spend half hour looking for something you found a few days earlier with the same exact name, nothing, zero, zilch,! All those have become like PMS with mood swings! :)

couldn't help but laugh at that one
  • rodw
  • rodw's Avatar
26 Jul 2024 00:22

Possibility of a Retrofit on Alcor 220CNC

Category: General LinuxCNC Questions

Mesa Cards have seperte MPG inputs (5 v signal) Often  only 2 but I'm sure different firmware can add a third at the expense of some inputds
Ref: linuxcnc.org/docs/stable/html/examples/mpg.html
(Example is Single MPG  with multiple axis select but easy to make it for a single axis.)
  • rodw
  • rodw's Avatar
26 Jul 2024 00:11

difference between machine coordinate systems and CAD software

Category: AXIS

I think your X axis needs to be rotated in F360 so its the same direction of the machine movement.
  • PCW
  • PCW's Avatar
25 Jul 2024 23:46
Replied by PCW on topic RCpwmgen

RCpwmgen

Category: Driver Boards

The RCPWM outputs 0..3 are on DB25 pins 6,7,8,9
with 7i96s_5abobrcd.bin firmware. These are fast 5V
CMOS buffered outputs on the common Mach 5 axis BOB

P1-01/DB25-01          34   IOPort       PWM              1        PWM             (Out)
P1-02/DB25-14          35   IOPort       None           
P1-03/DB25-02          36   IOPort       StepGen          5        Step/Table1     (Out)
P1-04/DB25-15          37   IOPort       None           
P1-05/DB25-03          38   IOPort       StepGen          5        Dir/Table2      (Out)
P1-06/DB25-16          39   IOPort       None           
P1-07/DB25-04          40   IOPort       StepGen          6        Step/Table1     (Out)
P1-08/DB25-17          41   IOPort       None           
P1-09/DB25-05          42   IOPort       StepGen          6        Dir/Table2      (Out)
P1-11/DB25-06          43   IOPort       RCPWM            0        PWM             (Out)
P1-13/DB25-07          44   IOPort       RCPWM            1        PWM             (Out)
P1-15/DB25-08          45   IOPort       RCPWM            2        PWM             (Out)
P1-17/DB25-09          46   IOPort       RCPWM            3        PWM             (Out)
P1-19/DB25-10          47   IOPort       None           
P1-21/DB25-11          48   IOPort       None           
P1-23/DB25-12          49   IOPort       None           


The 7I96S requires Efinix's Efinity toolset to compile new bitfiles
  • Project_Hopeless
  • Project_Hopeless's Avatar
25 Jul 2024 23:33
Replied by Project_Hopeless on topic RCpwmgen

RCpwmgen

Category: Driver Boards

Ok, I think I know the issue, The firmware I'm using has the rcPWM on the Mach 3 BOB P11 an opto output.  Should be on P1 the PWM for the BOB ???

Is Xilinx Design Suite still used to compile firmware for the 7i96s?

 
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