Messages

1

General Mach Discussion / Re: creating small circles

« on: November 23, 2009, 02:26:59 PM »

thanks for the M7 directions.  I did help a bit with the delay.  Im still looking for no delay after axis movement..

Anybody else have any suggestions?

2

General Mach Discussion / Re: creating small circles

« on: November 20, 2009, 05:37:13 PM »

We have a syringe hooked up to a nuematic air machine and an air compressor.  The Syringe is fastened to the XY machine.

On a standard circle,  the code is like this

Y0 X0
M3 (glue turns on for .5 sec and piles glue up)
G02 I0 J-.03 F100 (glue dispenses in a circle)
M5 (glue is on for .5 sec, glue piles up and then glue shuts off)
Y1 (moves 1 inch to next circle)
M00


Is there anyway to make the glue start the instant the circle is being formed and stop the exact instant the circle is finished?

3

General Mach Discussion / Re: creating small circles

« on: November 20, 2009, 05:16:41 PM »

great! that worked out fine.

now i have a new delemma.

I have the spindle output hooked up to a pnematic air gun that dispenses glue.  The glue is going to form the .060" diameter circle.  the problem is the blasted spindle dwell.  When the M3 is called out, the glue comes out for .5 seconds and then does the circle and then comes out another .5 seconds after the circle is done.

Is there any way to make the glue start and stop exactly when i want it to?

thanks,

Bryson

4

General Mach Discussion / creating small circles

« on: November 20, 2009, 03:29:15 PM »

Hi all,

I wanted to know what the smallest circle mach3 can make. 

I used the command below and it made a circle of about 2" in diameter.

G02 I0 J.03

I need the circle to be .060" in diameter(.030" Radius).

my default units are inches.

Is there any setting that i can change to make the circle as small as i would like?

Thanks,

-Bryson

5

General Mach Discussion / Re: dwell for the spindle

« on: November 18, 2009, 12:42:30 PM »

how do i access the A axis.  I need it to put out the same signal that the spindle did earlier?

6

General Mach Discussion / Re: dwell for the spindle

« on: November 17, 2009, 08:29:16 PM »

 i followed your directions and your settings and nothing happens when i type G0 A.01 or G0 A0 in the midi tab or code.

-bryson

7

General Mach Discussion / Re: dwell for the spindle

« on: November 17, 2009, 06:32:48 PM »

I dont think that we utilize the a axis.  Is there a setting that i need to access to turn the use of it on?

And what code can i use to move the A axis?

Bryson

8

General Mach Discussion / Re: dwell for the spindle

« on: November 17, 2009, 06:08:35 PM »

Can you please explain how this would work?

thanks

9

General Mach Discussion / Re: dwell for the spindle

« on: November 17, 2009, 05:52:19 PM »

I put the M5 stop earlier in the code and the glue piles up whenever i call out that M5 command.  I just need it to stop at the exact moment that I tell it too.

Is this a dwell problem. And if so, is there any way to completely get rid of the dwell feature as it does not apply to us and never will.

thanks,

10

General Mach Discussion / dwell for the spindle

« on: November 13, 2009, 05:32:43 PM »

Hello all,

Its Bryson again.

As you have seen on my previous smoothness topic I have fixed the smoothness problem.  The CV rate was far too low and my program was acting like an exact stop program.

New Dilemma.

As you all know "I am a mechanical engineer working for a lighting company called LSGC.  Although i am a design engineer, I have been give the great task of sealing glass onto a fixture via silicone.
We have a standard XY table.  Attached to the XY table we have a syringe that dispenses silicone though means of a pneumatic air gun and we use a step peddle to activate the air gun.

I have written a program for the XY table to follow a simple rectangle with rounded edges to follow the profile of the fixture Using the G-code below and MACH3 software.    The clue dispensed is at a fixed amount and at each step the glue piles up."


I have kind of jimmy rigged a connection from the computer to the XY table in place of the foot step peddle.  I used the port for the spindle and have the commands M3 and M5 to start and stop the air gun in place of the spindle.

My problem is, at the end of the program when the M5 is called the dwell keeps the Air Gun(spindle) running for 1 sec or so and Glue piles up.  I need to reduce the 1 second into 0 seconds.  I want the M5 to stop on a dime.

Any suggestions?

Below is the code.  I already put dwell in milliseconds and it still doesn't work.

O1111 (DOES 1 COMPLETE 1 FT FIXTURE)
( W .020 RTV THICKNESS)
(X0 CENTERED ON LEFT RAIL OF FIXT.1)
(Y0 AT EDGE OF PART)
(Z0 AT HIGHEST POINT OF FIXTURE)
(DC 732 AT 45PSI,GREEN PLASTIC TIP)
(5-15-09 REV.= )
G0 G90 G17 G40 G54
(DISPENSING)
G0 X-7.0 Y3.0 Z.5
M00 (VERIFY DISPENSE)
G0 X-.0858 Y-.5
G0 Z0
G01 Z-.26 F20.0 (SET NEEDLE HEIGHT FOR 1)
M00
M98 P17
G90 G0 Z.5
X-7.0 Y3.0
M00 (WIPE TIP OF DISPENSER)
Y24.0(INSTALL GLASS)
M30
%

O17
G0 G91 G17 G40 G54 G64
M3 (Glue ON)
G01 Y12.23 F160
X.155 Y.155 r .175 F300
G01 X1.48 F160
Y-.155 X.155 r .175 F300
G01 Y-11.48 F160
X-.155 Y-.155 r .175 F300
G01 X-1.48 F160
X-.155 Y.155 r .175 F300
G4P0
M5 (Glue OFF)
G01 Z -.02
G01 X.1
G01 X-.1
G01 X.1
M99
%


Thanks,

-Bryson