Messages

3931

Show"N"Tell ( What you have made with your CNC machine.) / Re: Constructing a Low Profile Tool Height Setter.

« on: February 22, 2013, 08:50:45 AM »

Hi Guys,

I am really sorry, but I have agreed not to disclose any further details.    (This is the problem when an idea is sold but I just could not refuse the cash).

Tweakie.

3932

General Mach Discussion / Re: Tangential Cutting issue, need advise

« on: February 21, 2013, 03:00:24 AM »

Hi Jaydem,

My apologies if I am unable to describe it correctly. The lead-in / lead-out has the same radius as the circle being cut and is placed exactly over the path of the circle - this way there is no wastage and the cutter will be clear of the work surface before any rotation occurs.

Tweakie.

3933

General Mach Discussion / Re: Tangential Cutting issue, need advise

« on: February 21, 2013, 01:49:19 AM »

Hi Jaydem,

The easiest solution with cutting holes is to create a lead-in /  lead-out (from the CAD/CAM program being used to create the tool-path) which has exactly the same radius as the hole being cut. This positions the cutter into the correct direction before it enters the work.

Tweakie.

3934

General Mach Discussion / Re: G31 issue

« on: February 20, 2013, 12:15:08 PM »

Do you want the long story or the short story,(;-)

(;-) TP

 

3935

General Mach Discussion / Re: G31 issue

« on: February 20, 2013, 03:22:09 AM »

Hi rrc,

This is an ongoing issue which will perhaps never go away.

Revisions to Mach have, at times, changed the way in which it processes the combination / mixture of VB (cypress basic) and GCode commands within a running macro / script.
I have made 4 changes to my probing script over the last 3 years in order to resolve various issues (as I updated to later Mach versions) and I am currently very pleased with the operation of the G31.
I use the probing function, for tool position setting, many times each day, 7 days a week and it is faultless, but I will never become complacent (at the suggestion of others I did fit an over-travel, e-stop, switch to my tool-setting probe but, so far, it has never been invoked).

My suggestion is that you look closely at the probing script that you are using and perhaps search other threads on the subject in order to correct it’s operation.
(If it is of any help to you, the probing script I am currently using is at the bottom of this page http://www.cooperman.talktalk.net/files/17.htm - I am not saying that this is the 'be-all' and 'end-all' because there are better scripts around but this one works for me).

Tweakie.

3936

General Mach Discussion / Re: limit switches triggered after sitting idle for a few minutes

« on: February 19, 2013, 06:52:43 AM »

Electrical noise is generally one or a series of relatively high amplitude and very fast spikes appearing on an input to the BOB or controller. These spikes are often so fast that it requires a pretty high quality scope to be able to spot them so don’t be surprised if you find nothing. Scope probe connects to an Input and it’s Screen to GND. Measurements should be taken whilst the machine is in operation so take care.

The best bet with electrical noise problems is to fit miniature 0.1uF capacitors (one connected between each used Switch Input and GND) at the controller / breakout board end.

Tweakie.

Addition;  Just a suggestion but another thing that has caused problems is the Watchdog Timer – Config / General Config – Make sure ‘Use WatchDogs’ is unchecked.

3937

General Mach Discussion / Re: Z axis

« on: February 19, 2013, 05:31:15 AM »

Hi Nick,

Welcome to the forum.

Within Mach - Config / Ports & Pins / Motor Outputs - change the Dir Low Active state for your Z axis.

That should do it. 

Tweakie.

3938

Modbus / Re: My experiments with Mach3 ModBus and Arduino, Part I

« on: February 19, 2013, 02:47:11 AM »

Hi KM,

An excellent, informative and well prepared article - thanks for posting.

Tweakie.

3939

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

« on: February 18, 2013, 08:11:51 AM »

One more test using the dreaded Toner. 

Tweakie.

3940

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

« on: February 18, 2013, 02:01:48 AM »

Hi Vaugolor,

Welcome to the forum.

If you post your question as a new topic in the General section, giving as much information about your machine/setup as you think is necessary you should receive some suggestions towards resolving your problem. (sounds like a stepper motor related problem to me).

Tweakie.