Messages

2351

General Mach Discussion / Re: Problem with G42 cutter radius compensation

« on: December 21, 2013, 07:35:38 PM »

AH I see what you mean I was just looking at the mode indicators which are not complete .

 BUT it is still a bug as it SHOULD error IF it cannot complete the instruction as programmed.

(;-) TP

2352

General Mach Discussion / Re: Problem with G42 cutter radius compensation

« on: December 21, 2013, 06:41:11 PM »

AH BUT if you do it this way it works fine here

G91.1 G91

G90.1 G90


I say BUG, (;-) TP

2353

General Mach Discussion / Re: Problem with G42 cutter radius compensation

« on: December 21, 2013, 10:33:48 AM »

Ray , Mach4 " may " get close but Mach3 can be miles away from matching Smids examples.

Just a thought, (;-) TP

2354

General Mach Discussion / Re: Problem with G42 cutter radius compensation

« on: December 21, 2013, 10:31:54 AM »

Gerry testing HERE from the MDI and GCODE program

G90 G90.1  switches to Abs IJ

G90 G91.1 switches to Inc IJ

(;-) TP

2355

General Mach Discussion / Re: Problem with G42 cutter radius compensation

« on: December 21, 2013, 09:35:26 AM »

AH the great thing about Gcode standards is that there are SO MANY of them to choose from.

The point I was making about the Parameter calls IS if you include them in the Gcode there is NO guessing what was meant from the operators standpoint. It is clearly defined.

IF you leave them out then from the operators view it is a guessing game and THEY HAVE TO HOPE all is well and just push the green button. Operators can be very valuable in fine tuning the written Gcode . THEY are the ones that SEE the interaction of code and motion first hand. AND sometimes the CRASH that follows(;-). 

Fagor also had its pitfalls (;-) and bad habits. It all seems normal when that is what you are programming in. 

Been THere done that,

Good catch Gerry(;-)

(;-) TP

2356

General Mach Discussion / Re: Problem with G42 cutter radius compensation

« on: December 20, 2013, 10:26:34 AM »

The G91.1 in the safety b;lock of the program is to make SURE that inc IJs are set correctly. IF the last program you ran set it to ABS then it wouls still be active as ABS mach3 does NOT change it back for you at end of program. When programming you should ALWAYS have ALL  the safety code in the block in order to makes SURE Mach3 is set correctly and there are NO surprises when it runs.  Failing to do this is MOST of the problem one sees with crashes "Improper modes still set".

G20 is a habit and is more common than G70.

N30 is to establish a point of origin for setup propose. Not required but sdoes give one a point of reference to align the machine to the part to be cut. NOT required.

T#1 is just a number I picked based on what I see you had programmed. Normally one would leave some wiggle room for changing out to a different tool diam if needed. IF your approach is too close then you cannot go larger on tool sizes.

Also you have to program the tool radius so that it does not go larger that the smallest inside radius of the part or else it will GOUGE and normally mach3 would not let it run. It would error on loading the program.

The D parameter sets the OFFSET based on Tool #. In this case Tool#1 AND the tool MUST be setup in the tool table.  The P value wouls set the tool radius based on a number value  P0.125  would mean a  .125" tool .

IF you leave those parameters off then Mach3 will use the LAST known tool # call.

Rule of reason says don't take the chance that something is wrong just  use the parameter calls with G42/3 SAME with G43 use the H call.

All parameters SHOULD be used at the time of the G42/G41/G43 calls   G41 D14  ,   G43 H3 etc

Overveiw,

D paramter sets the TC based on the Tool#   D1  = Tool #1
P parameter stes the TC based on the value of P   P.0125 = Tool value of 0.125"
NONE = Uses the last known Tool# values
H sets the Height based on the Tool #

The feedrate change came after a calculation that it would take all day to review that code running at such a slow feedrate (;-)

(;-) TP

2357

MACH TOOL BOX / Re: G31 Probing Arrays

« on: December 19, 2013, 01:09:53 PM »

It is included in the Zip File as "G31 Probe Arrays .TXT"

(;-) TP

2358

General Mach Discussion / Re: Probing Wizard

« on: December 19, 2013, 12:46:38 PM »

A question for YALL. Would you want the wizard to create a gcode and load back to MAch3 OR would you want it to RUN the Probe code from the wizard in real time.

(;-) TP

2359

General Mach Discussion / Re: .txt files

« on: December 19, 2013, 12:43:44 PM »

When you LOAD a file select from the pop up box which extension you want to see or ALL to see everything.

(;-) DARN can't type fast enough

(;-) TP

2360

General Mach Discussion / Re: Problem with G42 cutter radius compensation

« on: December 19, 2013, 12:39:44 PM »

Try it this way.

N10 (PROFILE PROGRAM)
N20 G90 G91.1 G20 (ABS, INCH PROGRAMMING)
N30 G00 X-.950 Y-.400 (Move to Point of Origin lower left of object)
N40 T1M6 (Tool #1 = .125)
N50  G00 X-.550 Y.225 Z.050 (MOVE TO 1ST HOLE POSN)
N60 G01 Z-0.250 F133.0 M3 (DRILL FIRST HOLE)
N70 G00 Z.050 (CLEAR CUTTER)
N80 X5.750 (MOVE TO 2ND HOLE POSN)
N90 G01 Z-0.250(DRILL SECOND HOLE)
N100 G00 Z0.050 (CLEAR CUTTER)
N110 X6.000 Y1.200 (SAFE POSITION TO START PROFILE)
N120 G01 Z-.200 (MILL TO DEPTH)
N140  G42 Y.850  D1 F160 (CUT TO SIDE WITH RAD COMP)
N150 X-.550 (CUT 1ST SIDE)
N160 Y.675 (CUT TO START OF 1ST ARC)
N180 G3 Y-.225 I0 J-.425 (CUT ARC)
N190 G01Y-.400 (CUT TO 2ND SIDE ALIGNMENT)
N200 X5.750 (CUT 2ND SIDE)
N210 Y-.225 (CUT TO START OF 2ND ARC)
N220 G3 Y.675 I0 J.425 (CUT 2ND ARC)
N230 G01 Y1.200 (CUT clear of object with comp)
N240 Z.050 M5 (LIFT CUTTER, TURN OFF SPINDLE)
N250 G40 G49 (CANCEL RAD AND LENGTH COMP)
N270 G00 X-.950 Y-.400 Y0 Z0 (MOVE TO Point of Origin)
N280 M30 (END, REWIND)