Messages

121

General Mach Discussion / Re: Z axis inconsistent movement

« on: September 14, 2020, 01:27:53 AM »

Hypothetically…

When a stepper assumes the nearest whole step position (from it’s current microstep position) it generally rotates the shortest distance.
If your Z move form 0 to 5 created a positive error and the move from 5 to 10 created a negative then one error would cancel the other.

Without knowing the actual equipment you are using I can only speculate. Perhaps post some detailed pictures of you controller and the associated electronics.

Tweakie.

122

General Mach Discussion / Re: New people welcome !! Come in here and introduce your self!

« on: September 14, 2020, 12:55:53 AM »

I’m a newbie to anything Cnc. I just won a chinacnczone 6090 machine at a local auction. It came with a pc thats rubbing mach 3. Along with cnc usb controller software. I do not have a clue what I’m doing. Where do I begin.

Reading the Mach3 manual may be a good place to start  https://www.machsupport.com/help-learning/product-manuals/

Tweakie.

123

G-Code, CAD, and CAM discussions / Re: Chinese breakout board BSMCEO4U-PP

« on: September 10, 2020, 01:20:26 AM »

A couple of things come to mind...

Use the Vectric PP Mach2/3 Arcs Inch.
Check that you have Vectric set-up in Inches (not mm) when you create the image.

Check that you have set-up Mach3 in Inches.
Use the Steps per Unit calculator (Diagnostics page) to check that you have each of your axis steps set correctly.
Check that you do not have G21 in your Initialization String (Config / General Config.).

Tweakie.

124

Mach4 General Discussion / Re: tried to post, said it was spam

« on: September 10, 2020, 01:05:48 AM »

tried to post, said it was spam. Everything I wrote is gone. Nice...

Well it worked Ok this time. 

Tweakie.

125

General Mach Discussion / Re: mach3 text engraving issues

« on: September 10, 2020, 01:03:53 AM »

Could you perhaps attach your problem Gcode file.

Tweakie.

126

General Mach Discussion / Re: Z axis inconsistent movement

« on: September 09, 2020, 03:17:47 AM »

I have set up as you suggested and I only run the Z10 Z0 code 20 times without moving the block as my problem is consistently creeping up. By using a feeler gauge the result had about 0.05 error so average out it had about 0.0025mm error each time it run.

with the same setup, Z5 Z10 Z0 code made almost no error as I do not have a feeler gauge small enough to fit the gap if there is any.

I think Graham may have solved the mystery so lets hope the cure is a simple fix.

Which motion controller are you using ?

What make and model is your stepper driver for the Z axis ?

Tweakie.

127

General Mach Discussion / Re: Z axis inconsistent movement

« on: September 08, 2020, 06:21:26 AM »

Perhaps one more test you could do is zero your Z axis to a gauge block (any solid block would do) – carefully slide out the block – run your test 100 times – slide in the block – measure the gap with feeler.

This would verify the integrity of your dial indicator.

Tweakie.

128

General Mach Discussion / Re: Years on now Mach 3 is dropping out on me? Screenset 2010

« on: September 06, 2020, 04:54:02 AM »

Mach3 likes to be installed - as you have discovered, copy and pasting the Mach3 folder does have it's problems. Could you perhaps restore to an earlier save (from your .xml backups folder) ?

Tweakie.

129

General Mach Discussion / Re: Z axis inconsistent movement

« on: September 04, 2020, 01:27:28 AM »

What are the Acceleration and Velocity figures you are currently using ?

Tweakie.

130

General Mach Discussion / Re: Z axis inconsistent movement

« on: September 04, 2020, 12:57:25 AM »

Try reducing your Z axis Acceleration and Velocity (in motor tuning) by 50% and apply the changes. Does the problem still occur ?

Tweakie.