Messages

2531

SmoothStepper USB / Re: Weird problem with one axis only

« on: April 18, 2017, 06:08:38 AM »

Stop banging the head - everything is simple once we know the answer. 

This thread shows a pic of the ones I made and the link to the Zone should get you started. http://www.machsupport.com/forum/index.php/topic,17670.0.html

Tweakie.

2532

SmoothStepper USB / Re: Weird problem with one axis only

« on: April 18, 2017, 03:07:58 AM »

The problem is Z will run flat out in both directions no problem. It will run feeds up to 500mm/min and 1000mm/min up to max speed without issues HOWEVER, between 600 and 900mm/min the motor stalls with a horrible scream.

This problem is typical of 'mid-band resonance'.

Some stepper motor drivers (typically Gecko http://www.geckodrive.com/support/step-motor-basics/mid-band-instability.html ) incorporate a system that more or less overcomes the mid-band problem but there is the alternative of fitting a dynamic balancing device known as a damper or dampner. These devices are quite light-weight and rattle - they incorporate small internal weights which move when the stepper hesitates (just before the stall) and in so doing changes its mass and thus prevents the stall. I have made my own dampners which I use on a couple of steppers that I usually run at around 2000 rpm and they really do work well.
Just one tip, avoid the heavy ‘puck’ type solution – it changes the mass alright but can cause other problems (don’t ask me how I know that).

Hope this helps.

Tweakie.

2533

Share Your GCode / Re: trouble making 8 lug spacer

« on: April 18, 2017, 02:41:48 AM »

Does this help ?

Tweakie.

2534

General Mach Discussion / Re: Lazycam/ Cams

« on: April 18, 2017, 02:30:50 AM »

I am sure everyone has their own preferences but check out the Vectric range of CAD/CAM software http://www.vectric.com/

Tweakie.

2535

Show"N"Tell ( Your Machines) / Re: The Laser Project.

« on: April 18, 2017, 01:44:30 AM »

Hi Nikolaj,

PicLaser demo version can be downloaded from here http://www.piclaser.com/
Try it to see if it meets your needs.

Tweakie.

2536

Show"N"Tell ( Your Machines) / Re: The Laser Project.

« on: April 17, 2017, 06:20:32 AM »

Hi Dan,

Sorry, but that was a few years ago and so much has happened since I just can’t remember it’s content.
The video will still be lurking on the forum somewhere – I initially transferred a number of discussions from the Hungarian areas to start the English section and obviously the link to that video didn’t follow. I will see if I can track it down but don’t hold out too much hope as it may remain illusive.

Tweakie.

2537

General Mach Discussion / Re: "run from here" problem

« on: April 17, 2017, 01:40:00 AM »

Hi CES,

Which version of Mach3 are you using ?

Tweakie.

2538

General Mach Discussion / Re: ZBrain writing

« on: April 15, 2017, 01:53:04 AM »

 

Tweakie.

2539

Mach3 under Vista / Re: Mach3 Axis Calibration Mystery

« on: April 15, 2017, 01:42:28 AM »

Hi Anders,

I think you have demonstrated that this is not a Mach3 problem.

I am not certain that you are using CanBam correctly, because there are many users here and there has not been another identical reported problem.

The latest Gcode that you have posted has some of the arcs drawn in Absolute and some of the arcs drawn in Incremental - basically your Gcode contains a mixture of standards which cannot be processed by Mach3 without the appropriate G90.1 / G91.1 being added throughout the code (almost from line to line in some places).

What is it, I wonder, that you are doing with CamBam that is different to everyone else. ??

Tweakie.

2540

General Mach Discussion / Re: X6-2200 machine with XHC-USB probing issue

« on: April 15, 2017, 01:30:09 AM »

Excellent information Stephenpinn, thanks for sharing.

Tweakie.