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Old 12-17-2008, 07:20 AM
 
Join Date: Jun 2006
Location: usa
Posts: 234
kendo is on a distinguished road
macro - motion pauses each loop

I'm trying to get a macro working that mills a helical bore
I've wrote it with two different methods, and the motion still pauses at the end of each loop
each loop being the next helical move incrementally down in Z

The call looks like this:
G65 P9012 X0 Y0 Z1. D2. R0. T.5 Q.1 F10.

X,Y = center of bore
Z = depth
D = diameter
R = top of bore
T = tool diameter
Q = depth increment
F = feedrate

the first method uses a subroutine and L count:

Code:
%
O09012 
#26= ABS[ #26 ] 
#100= ROUND[ #26 / #17 ] 
IF [ #100 LT [ #26 / #17 ] ] THEN #100= #100 + 1 
#101= #26 / #100 
#102= 0 - #101 
#103= 1 
#104= [ #7 / 2 ] - [ #20 / 2 ] 

G00 X#24 Y#25 
Y [ #25 + #104 ] 
Z [ #18 + 0.1 ] 
G03 I#104 Z#18 F#9 
M97 P1000 L#100 
G03 I#104 F#9 
G00 Y#25 Z [ #18 + 0.1 ] 
M30 
N1000 
G91 
G03 I#104 Z#102 F#9 
G90 
M99 
%
the second uses an IF loop with a counter variable:

Code:
%
O09012
#26 = ABS[ #26 ]						
#100 = ROUND [ #26 / #17 ]					
IF[#100 LT [ #26 / #17 ] ] THEN #100 = #100 + 1  
#101 = #26 / #100 					
#102 = 0 - #101 							
#103 = 1 						
#104 = [ #7 / 2 ] - [ #20 / 2 ]					

G00 X#24 Y#25 			
Y [ #25 + #104 ]		
Z [ #18 + 0.1]			
G2 I#104 Z#18 F#9 		
N1 
IF [ #103 GT #100 ] GOTO 75 	
G2 I#104 Z#102 F#9 			
#102 = #102 - #101 			
#103 = #103 + 1 			
GOTO 1 						
N75 
G2 I#104 F#9 
G00 Y#25 Z [ #18 + 0.1 ] 	
M30
%
anybody got some help for me?
it'd be much appreciated
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Old 12-17-2008, 10:47 PM
 
Join Date: Jul 2005
Location: Canada
Posts: 11,419
Geof will become famous soon enough

Why did you write a macro for helical motion when Haas has this capacity in G02 and G03?

G91 G03 I0. J-j.j Z-z.z L10

Gives you ten circles of radius j.j going down a distance of z.z for each circle for a total depth of 10z.z.

G90 G03 I0. J-j.j L1

Takes the helical ramp out at the bottom (the L1 is actually redundant).
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Old 12-18-2008, 06:17 AM
 
Join Date: Jun 2006
Location: usa
Posts: 234
kendo is on a distinguished road

'cuz I wanna

no seriously,
I convert a lot of programs from my Tree machine w/ A2100 controller and it has a circular pocket canned cycle G26
So I'm gonna alias this macro to G26 in the Haas and set up the variables to be as close to the tree configuration as possible, thereby eliminating as much editing as possible.
Besides that, its quicker and easier type in the diameter and depth than it is to figure the J value and Z / L.
I try to do stuff like this to make programming at the machine as quick and error - proof as possible - for me and the guys I train.

Plus this macro is gonna evolve:

It'll have a finish pass for one, with arc on and arc off

it'll also have cycle types such as:
-rough and finish each increment
-rough each increment and finish at final depth
-helical entry
-pre-drilled hole entry
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