Messages

1

General Mach Discussion / Re: Machine moving before Drill bits are fully retracted

« on: June 07, 2010, 03:18:20 PM »

Here's my Mach3Mill.xml file.  Does this explain why I had an interference while moving the drill?

Cincinnati

2

General Mach Discussion / Re: Machine moving before Drill bits are fully retracted

« on: June 07, 2010, 02:45:44 PM »

Derek,

My tool Change codes are at N03, N22, and N41. What do you suggest I modify? I am not making the correlation to your situation.

3

General Mach Discussion / Re: Machine moving before Drill bits are fully retracted

« on: June 03, 2010, 10:34:47 PM »

what is xml & how/where do I get it?

4

General Mach Discussion / Machine moving before Drill bits are fully retracted

« on: June 03, 2010, 05:51:11 PM »

I am running Mach 3 / Camtronics Controller on a Shopmaster Patriot. I ran the following G-Code to drill two 1/2" deep  holes 2.75 inches apart, then counterbore these holes .187 deep with a larger bit. I choose a .125 pecking step and a rapid plane of 0.100.

The program located the first hole and started the pecking, but the table started moving before the drill retracted from the workpiece and before the first hole was completed to depth of 1/2".  This of course snapped the bit.

Can anyone tell if there is a problem with my code?


N01 G20 G40 G49 G54 G80 G90 G91.1
;N02 G53 Z0.

(JOB 1  HOLE  RANDOM POINT PATTERN)
(FEATURE DRILL HOLE)

;N03 T1 M6
N04 S504 M03
N05 G00 G90 G54 X.5 Y1.625
;N06 G43 H1 Z.1 M08
N07 G81 G98 X.5 Y1.625 Z-.068 R.1 F1.0084
N08 Y4.375
N09 G80
N10 G80

(JOB 2  HOLE  RANDOM POINT PATTERN)
(FEATURE DRILL HOLE)

N11 S504
N12 G00 X.5 Y4.375
N13 G81 G98 X.5 Y4.375 Z-.08 R.1 F1.0084
N14 Y1.625
N15 G80
N16 G80
N17 M09
N18 M05
;N19 G53 Z0.
;N20 G53 X0. Y0.
N21 M00

(JOB 1  HOLE  RANDOM POINT PATTERN)
(FEATURE DRILL HOLE)

;N22 T2 M6
N23 S1291 M03
N24 G00 G90 G54 X.5 Y1.625
;N25 G43 H2 Z.1 M08
N26 G83 G98 X.5 Y1.625 Z-.6409 R.1 Q.068 F3.8759
N27 Y4.375
N28 G80
N29 G80

(JOB 2  HOLE  RANDOM POINT PATTERN)
(FEATURE DRILL HOLE)

N30 S1036
N31 G00 X.5 Y4.375
N32 G81 G98 X.5 Y4.375 Z-.3379 R.1 F3.1099
N33 Y1.625
N34 G80
N35 G80
N36 M09
N37 M05
;N38 G53 Z0.
;N39 G53 X0. Y0.
N40 M00

(JOB 2  HOLE  RANDOM POINT PATTERN)
(FEATURE DRILL HOLE)

;N41 T2 M6
N42 S397 M03
N43 G00 G90 G54 X.5 Y4.375
;N44 G43 H2 Z.1 M08
N45 G81 G98 X.5 Y4.375 Z-.0422 R.1 F1.1918
N46 Y1.625
N47 G80
N48 G80
N49 M09
N50 M05
;N51 G53 Z0.
;N52 G53 Y0.

(END OF PROGRAM)

N53 M30
%

5

FAQs / A Warm-up Routine

« on: September 17, 2008, 06:50:38 PM »

Does anyone run a warm-up routine on their mill/lathe?

A machinist suggested that it may be advantageous to run a 5-10 minute warm-up program where no metal is cut and the machine moves the axes back and forth until the motors warm up.

6

FAQs / Feedback Control loop with a DRO

« on: September 17, 2008, 06:46:26 PM »

I have a DRO on my ShopMaster Patriot. Is there a way to incorporate position feedback from the DRO so that when Mach 3 instructs a move, the software can verify what position the axes are at?

Has anyone actually done this?

7

FAQs / Re: Setup Problems

« on: September 17, 2008, 06:27:46 PM »

Sounds like your "Steps per inch"  needs further adjustment.

I went to 1" increments to set motor tuning. This made it easy to set steps per inch.

My baseline was 20,000 steps per inch. Dividing by 1000 mils/inch translates to 20 steps per mil.

You state you are getting 1.020 when you command a move of 1.000. Look at your "Steps Per" setting. Divide by 1000 to give your steps per mil.

Place carriage with the carriage in the middle of travel range. Remove backlash. enter G0 X1. Record how far it actually moved. Enter X1 again and Record actual distance moved. Repeat this a total of 5 times. Average the actual distances.

Multiply the average actual distance greater than 1.000 by your steps per mil and subtract it from the "steps per" in the motor tuning window. Run the test again with the new steps per, and repeat adjusting until you get an acceptable number.

Repeat for each axis.