Dynomotion Forum

Hello Tom,

I am trying to make the rigid tapping working, I checked the wiki (https://www.dynomotion.com/wiki/index.p ... up_and_Use), set M119 in Execute, wait, and Synchronize (thread 2, variant 50) for the C program from the wiki.

N11 G0 X9.5 Y9.5 Z1
N21 G84 Z-7 R1 F10

But the G84 code is ignored, what did I do wrong?

Cordially

Francois

Hi Francois,

What Version of KMotion are you running?

What is printed on the KMotion.exe Console Screen?

Which program from the wiki? Please post it. Also post your Initialization C Program.

Hi Tom,

I am running 4.34 version, attached the 2 files.

Cordially

Francois

What is printed on the KMotion.exe Console Screen?

Init.c says Spindle Axis is 4 but tapping.c has:

#define SPINDLE_AXIS 3 // Spindle Axis With Encoder Feedback

That Tapping.c program is for an open loop Spindle controlled by a DAC and direction bits. Yours appears to be a closed loop axis where it can be controlled with Axis Move commands. So you might use the attached example.

OoooOOpps, sorry:

Units = mm
Bottom = -7.000000
Pitch = 0.100000
Max Tap Speed Exceeded
Units = mm
Bottom = -7.000000
Pitch = 10.000000
Max Tap Speed Exceeded
Units = mm
Bottom = -7.000000
Pitch = 10.000000
Max Tap Speed Exceeded
Units = mm
Bottom = -7.000000
Pitch = 10.000000
Max Tap Speed Exceeded
Jogging Spindle Stop

Hello Tom,

Ok done, there is some improvement, but not yet working, I made a video of the result (sorry for the mess and the noise). You can find it here :

https://drive.google.com/file/d/1h1ZtYH ... sp=sharing


Dunno if it matters, but spindle is true in closed loop, but with very low PID values, necessary for the tool change operation.


Cordially

Francois

Hi Francois,

The video is not useful. Please explain what you are expecting. Post the GCode (not a photo). Also your C programs and what is printed on the Console Screen.

Hello Tom,

Code :
N1 G54
N11 G0 X9.5 Y9.5 Z1
N21 G84 Z-70 R0.1 F1
N31 G0 X-9.5 Y9.5 Z1
N41 G84 Z-7 R1 F10
N51 G0 X-9.5 Y-9.5 Z1
N61 G84 Z-7 R1 F10
N71 G0 X9.5 Y-9.5 Z1
N81 G84 Z-7 R1 F10
N91 G0 Z50
N101 M30

Console screen:
Units = mm
Bottom = -70.000000
Pitch = 1.000000
Units = mm
Bottom = -7.000000
Pitch = 10.000000
Units = mm
Bottom = -7.000000
Pitch = 10.000000
Units = mm
Bottom = -7.000000
Pitch = 10.000000
Jogging Spindle Stop

Description:
The machine is moving to the coordinates in G0 properly, then stops and goes down a little bit (between 0.1 and 2mm) but the spindle does not rotate. Then moves up to Z1 and reproduces the same movement for the 4 threads.

Expectations:
Well I expect the machine to go to every position and perform a rigid tapping to the given depth pitch and speed.

C program:
Unchanged from the previous posts.

Cordially

Francois

Hello Tom,

Please help I really need to put that machine in production and threading is a must

Francois