Messages

1

Mach3 under Vista / Re: Origin drifting along the program running

« on: August 20, 2019, 11:54:49 PM »

I tried to change motor parameter and something interesting happen. I changed the velocity from 115 to 215 and the drifting is reducing (around 0.2 mm). I pushed on the other direction from 215 to 15. The machine is moving very slow but for the same number of line I obtain 13.6 mm drifting that is huge

2

Mach3 under Vista / Re: Origin drifting along the program running

« on: August 20, 2019, 11:31:05 PM »

Hi

Thank you for your reply

This is some information

1 - My breakout board : http://www.dmm-tech.com/DMB4250-8B_main.html

2 - Is it fast enough : Good question

3 : Motor tuning : Step per : 10007.2, Velocity : 115.56, Acceleration : 16.720908, Step Pulse 5, Dir Pulse 5

4 - I did some test with signal pulse speed at 100Khz with the same result

3

Mach3 under Vista / Re: Origin drifting along the program running

« on: August 19, 2019, 10:54:53 PM »

Thank you for the answer. I'm not sure it is noise. My drive and all cables are bran new. It is a upgrade kit sold by DMM Motion. (http://www.dmm-tech.com/multiaxissolutions2.html). On this kit I just added and ESS board (https://warp9td.com/index.php/products)  to be able to drive the machine from RJ-45 port instead of parallel port. The addition of this board never change the behavior of the system compare to initial situation directly driven by the parallel port.

I did some test with basic code with the machine. Simple code like

G21
G00 X0
G00 X200
G00 X0

Repeating this sequence many time to see if the zero location is drifting. After few repetition it is possible to see the origin drifting in the direction of x positive. It is really reproducible. I have same behavior if I do the same experimentation along Y.

The next step will be to try to jog the axis directly on the servo drive to detect if the issue is coming from the mechanic. I will be really surprised but I need to eliminate this possibility. After that I will need a way to investigate the controller. Is someone has any suggestion to test that?

Thank you

4

Mach3 under Vista / Origin drifting along the program running

« on: August 04, 2019, 11:20:41 PM »

Hi
we just installed brand new servo motor kit on a old router we would like to  renew. All axis are turning freely by hand all along the axis displacement. The motor is directly driving a screw by the way of a servor motor coupling. These coupling are tight.

We have configured alll Mach3 parameters to reach good accuracy for all axis. The issue we have currently is drifting of  the origin along the program. It is like the axis are loosing some steps. Example. We have a reference for the zero position on the table of the machine. We are doing the zero of the machine at this position before starting the program. We run a small program doing a facing operation. (100 g-code lines). We run this program in the air (without milling material). Returning the machine at origin position (G00 X0Y0) and we  have an offset of the origin around 3 mm in x and y, It is mostly the same in both both a little bit larger in X. The X and Y screws are the same.

Is someone can have any idea what can cause this drifting of the origin?

Thank you for your help.

5

General Mach Discussion / Re: Touch plate + touch probe connection

« on: February 01, 2019, 11:25:20 PM »

Thank you for your really nice anwser

6

General Mach Discussion / Re: Touch plate + touch probe connection

« on: February 01, 2019, 06:23:35 PM »

 It is what I would like to do but I never saw a second input for a probe. What is the name of th second input you use?

7

General Mach Discussion / Re: Touch plate + touch probe connection

« on: January 29, 2019, 11:11:59 PM »

I have tough about this solution but I was wondering if there are an other solution. I still have available space on my input board

8

General Mach Discussion / Touch plate + touch probe connection

« on: January 29, 2019, 10:18:38 PM »

Hi

I already have on my machine a touch probe. I would like to add a touch plate to automatically measure tools. The touch plate needs to generate a probe event.  My question if the probe input is already occupied by the touch probe, where I can connect the touch plate to generate a probe event when I measure the tools

Thank you

9

General Mach Discussion / Re: Slow milling

« on: January 29, 2019, 10:01:28 PM »

Yes you were right. I change it for constant velocity. It is better but not fuid

10

General Mach Discussion / Tool change position

« on: January 28, 2019, 08:50:30 AM »

Hi,

I'm using a small router that is running under Mach3. I have a comportment I never understand when I use M6 command to do a tool change. When I do for example M6 T1 the machine goes rapidly in z position (top of the z axis) until it reaches the end of the axis. I have check to tool change position and it is set at (0, 0, 0 ).  I was expecting the machine will go at 0, 0,0 when I do M6 command. How I can fix this strange behavior?


My other option is just to remove the movement to go automatically to tool change position. That means that when M6 command is called just stop the program and stay were the machine is. Is it possible to do that?

Thank you