Topics

1

General Mach Discussion / HOMING ISSUE!!

« on: March 07, 2016, 05:39:25 PM »

i own a a retrofitted router with one stepper on y, one on z and two steppers on x (one is configured as axis a) ..

stepper A is configured to mirror stepper x.

machine works perfectly, and have run it for 3 years with NO home switches. and never a problem with crashes (i am careful!)

finally decided I need them to make my machine more reputable because I am doing some jobs over and over.. (to the point were I have Fixtures for the machine that I never saw in the beginning)

anyhow.

the machine has existing homing / limit swithes which are of the normally open type.
using these existing switches I wired the switches in parallel.. configured my inputs for X home , y home, z home and a home.
and tried homing

z works perfectly
y works perfectly
x however.. works half!
 one of my motors (we will call X, stops as it should)
the A motor however continues to run. even after the switch has been activated.


I have attempted to EMULATE the a axis home switch,
I have tried to disable and enable and reverse the a axis..
but I am slowly tearing the machine apart during this home cycle..

can anyone think of a reason why my axis motor would continue to run forward after the limit switch on the x axis has been tripped.

2

General Mach Discussion / struggling with the digitize wizard.

« on: August 18, 2012, 01:12:30 AM »

i am in need of a digitizing solution..

I've attempted to utilize the digitize plugin with NO success..

and now I am struggling with the digitize wizard.

this is my "process of its use." (i.e my strategy is )



1. set probe above highest surface of the object to be scanned (perhaps .25 inches?)

2. zero all axes

3. open digitize wizard

4. set width of digitizing area (x) to 2

5 set  height of digitizing area (y) to 2.

6. set z axis travel height to +3.

7. set probe depth to -1.5

8 set x stepover to .5

9 set y stepover to .5

10 feedrate to 90

11 generate g code and exit to mach

12. I "get" a digitize code..

13. select cycle start and I am prompted to save a file in a folder

14. I create a folder and a filename.. (in a folder I have created for digitizing)

15. click cycle start again , probe moves up.. to 3.0

16 probe moves down to 2.28

totally confusing me as to what the inputs I am giving are supposed to do..

I have tried a Number of different variables for #6 as well as #7

my cnc router will run my other code just fine..
but I cannot get it to go run the probing wizard correctly..


seems as though no matter what I do I cannot get the probe to touch the top of my part.


any thoughts?