Messages

371

General Mach Discussion / Re: Mach Z Axis dangerous behavior

« on: September 10, 2018, 10:07:16 AM »

Which software you use for PCB?
Which software you use to convert drill file to g-code?
Second, upgrade to Mach3. Your drill file backplots correctly im Mach3 and in CIMCO.

Many years ago I wrote a conversion software from Protel format to g-code.
Anyhow, first upgrade to Mach3 ver 062: http://www.machsupport.com/software/downloads-updates/
Direct link: ftp://anonymous:guest@ftp.machsupport.com/Mach3/Mach3Version3.043.062.exe
If needed, I can remake my converter for your needs.

ZASto

372

General Mach Discussion / Re: "RUN FROM HERE" Z- Axis goes to Limit switch???????

« on: September 05, 2018, 03:35:45 PM »

You're welcome

373

General Mach Discussion / Re: "RUN FROM HERE" Z- Axis goes to Limit switch???????

« on: September 05, 2018, 01:00:43 PM »

Safe Z iz im Machine Coordinates.
When you home your machine, Z zero is just a fraction below Z limit switch (by the ammount of backing off)

374

General Mach Discussion / Re: "RUN FROM HERE" Z- Axis goes to Limit switch???????

« on: September 05, 2018, 08:44:07 AM »

Set your SafeZ just below Z limit switch.

375

General Mach Discussion / Re: Steps per unit strange trouble

« on: September 02, 2018, 04:36:21 AM »

Check backlash.
You wrote nothing about circles. Are they round, stepped at 0, 90, 180, 270 degrees, ...?
Does your machine have screws/nuts or rack/pinion drive?
Have you tried yur squares in diferent positions on your table?

376

General Mach Discussion / Re: MACH3 RAPID's: What determines the velocity?

« on: August 30, 2018, 05:38:51 PM »

I guess that the rapids in combined moves (X and Y simultaneously) can be higher than individual axis.
If your max feedrate is set to 1000 for both X and Y, the resulting velocity from X0 Y0 to X1000 Y1000 would be in vicinity of 1410.

377

General Mach Discussion / Re: Steps per unit strange trouble

« on: August 30, 2018, 05:33:38 PM »

Take a steel ruler. I calibrated another, chinese machine with 1005mm steel ruler made in CCCP

Do you have any backlash in your axes?

378

General Mach Discussion / Re: Seeking some help on "drifting" X axis

« on: August 30, 2018, 05:28:39 PM »

N0050 G53 G90 G91.1 G40

Your G-code runs in Machine coordinate system: G53 Move in Machine Coordinates
Absolute distance mode: G90 (set absolute distance mode)
Incremental arcs: G91.1 - incremental distance mode for I, J & K offsets
Tool compensation off: G40 Compensation Off

Why do you run in machine coordinates? Do you have homing/limit switches?

Second, show us your code with circles.

Chech this: http://linuxcnc.org/docs/html/gcode/g-code.html or https://machmotion.com/cnc-info/g-code.html

379

General Mach Discussion / Re: Steps per unit strange trouble

« on: August 30, 2018, 04:50:35 PM »

Settings steps per should be checked/verified on maximum possible dimension of your machine.
And, maybe you have a lot of flexing?

In the attached picture you can see the results of "springy" Z axis on a friends DIY machine.

380

General Mach Discussion / Re: Seeking some help on "drifting" X axis

« on: August 30, 2018, 09:02:18 AM »

This looks definitely as G-code problem (variables?).
First column of circles is aligned in Y direction, second gains In X direction, as well as third column, more than second. And, pen does not return to origin .
Incrementing definitely, in code.