Messages

1

General Mach Discussion / Re: Opening g-Code Locks Mach3

« on: April 20, 2023, 03:32:20 AM »

I found the solution to my problem,

The g-code I sent before includes 2 operation, one is the perimeter contour and the other one is to drill five 1/8” holes and both operations use the same endmill.

I cut that piece earlier today using only the perimeter contour but by mistake I had the endmill cutting on the inside of the perimeter instead of the exterior. So I corrected my mistake and at the same time I added the drilling operation.

Thinking now I said why it worked before and not now and the conclusion is because I added the drilling operation. I removed the drilling and just did the contour and now the code worked

My thanks again John

2

General Mach Discussion / Re: Opening g-Code Locks Mach3

« on: April 20, 2023, 02:36:35 AM »

Thank you John for your time

It is not a soft limit or any other mechanical/electrical problem because as soon as I load the attached code it rolls immediately to line 116 and the cnc acts like I use E-Stop. In addition the image of the item I want to cut on the Mach3 screen is distorted and in the wrong quadrant.

The g-code is attached as a txt file

Nicolas

3

General Mach Discussion / Opening g-Code Locks Mach3

« on: April 19, 2023, 08:30:50 PM »

Sorry guys I’m still on Mach3 because as a retired man I have no great use of it. I decided now to build a wooden clock as a hobby and of course Mach will be in use again. BTW I bought Mach3 some 20+ years ago from cnc4pc but that’s a long time ago….

Picture 1 shows a part in my CAM software, a piece approx. 8” long by 3” wide to be cut in 1/2" thick plywood. If you noticed the part is locate in the lower left quadrant of the X/Y axis

Picture 2 shows the same part on Mach3 screen which out of shape and located in the upper right corner of the X/Y quadrant which is wrong.

Picture 3 shows the part of the g-Code especially line 116 which is highlighted when I open the g-Code in Mach3. This tells me that Mach3 sees a problem with this line and the motors on my cnc are not working.

From some past notes I have on Mach one says “…if I have a lot of curves/circles in my part change the IJ Mode in general config from absolute to Inc…” but doing so nothing happens, line 116 is still highlighted and motors are not moving. Closing the g-code the motors are working which means nothing wrong with the cnc.

Any help will be greatly appreciated
Nicolas

4

General Mach Discussion / Auto Tool Zero Setting

« on: March 26, 2023, 05:00:54 PM »

I’m using Mach3 and I have a few items to cut on a 3/4” plywood I have on the top of my cnc. So I use the Mach3 Auto Tool Zero utility which sets the tool tip at 1” above the table. Then I press cycle start and the gantry goes to the start point, the tool decent and does the cut. At the end she goes back to the origins and lowers the tool to zero and stops. Now the tool tip almost touches the top of the plywood.

To do my net cut I have to move the gantry to the next cuts origin but I can’t since the tool is almost touching the table plus I have to re do the Auto Tool Zero process and this becomes a pain when I have to do a lot of cuts.

Is there a better way to do multiple cuts and how?

Thanks

5

General Mach Discussion / Re: E-Stop During a Cut

« on: October 04, 2022, 08:33:09 AM »

I thought about it but then I said perhaps there is a setting somewhere.....Anyway no problem to do it as you say

Thank you

6

General Mach Discussion / E-Stop During a Cut

« on: October 03, 2022, 05:28:03 PM »

I noticed when I use my cnc to do a cut if I press the E-Stop all axis movement stop and the spindle stops running but after when I press the Cycle Start the axis start to move but not the Spindle.

Is this normal and if yes is there a way to have the spindle also running?

Thanks

7

General Mach Discussion / Re: Grounding Stepper Motor Driver

« on: September 12, 2022, 01:35:16 PM »

We're talking about grounding the shielded cable shielding. Not any signals.

Yes, grounding the shielded cable shielding

8

General Mach Discussion / Re: Grounding Stepper Motor Driver

« on: September 12, 2022, 12:03:22 PM »

To my experience grounding the signal side of a driver (A in the attached picture) is wrong, that’s the cable connected to the BOB. It almost twisted my gantry because the Y axis motor turned much faster than the slaved A axis.

Then I grounded the high voltage (D), that’s the cable handling the feed to each stepper motor and then all was good.

9

General Mach Discussion / Re: Grounding Stepper Motor Driver

« on: September 06, 2022, 08:58:57 AM »

Thank you Charlie, I will ground one end of the signal shielding

10

General Mach Discussion / Grounding Stepper Motor Driver

« on: September 05, 2022, 06:14:26 AM »

On a stepper motor driver we have the high voltage section where we connect the required power and we also have the signal section where the wiring from the stepper motors connect.

I use shielded cables for both the high voltage and signal sections and my question is do I ground the shielded cable in both sections or just the high voltage or signal section?

Thanks