# Thread: biesse 336 parametric question

1. ## biesse 336 parametric question

I have this old girl for a while now and have been using Mastercam all along.
I am trying to figure out how to pocket in a small program. With the machines manual it is not like walking in the park. I spat out this program in Mastercam and ran it the tool config is set. Below N58 i think i will be able to change it to the lpx+lpy commands with no problem.N14-N56 is the problem?
I will be doing all lengths and widths so using Mastercam sucks if you have to post half your day away. Attachment is in notepad
Dan

Not expecting a freebie,just dont get it (tested working file in prev.post)
A Shaker Door 3/4 MDF, 2 1/4 rail all around, 1/4 Deep pocket, Four tools

N10 LX=406.30 LY=304.70 LZ=18 HC1 Z-PRK
N20 PAN=1 UT=1 L=GCUA
N30 PAN=2 UT=2 L=GCUA
N40 AA=LPX-66.00
N50 BB=LPY-66.00
N60 cc=(Y-17.150) : stepover amount
N70 DD=(LPY-133.2/17.150) :# of passes
N80 X66.60 Y=AA Z=PRK TP2 PRF=-!) G40 F3 L=PON
N90 G1 ZI11.00
N100 EE=0
:1
N110 EE=EE+1
N110 JM(EE>=DD):2
N120 G1 X66.60 Y=BB
N130 G1 Y=CC
N140 G1 X66.60
N150 JM:1
N160 G0 ZI-11
:2
N170 AND SO ON........ I know its out a mile ..........Machine thinks so too.

3. N10 LX=406.30 LY=304.70 LZ=18 HC1 Z-PRK
N20 PAN=1 UT=1 L=GCUA
N30 PAN=2 UT=2 L=GCUA
N71 TD=19/2 ;TOOL DIAMETER/2
N40 AA=LPX-66.00-TD
N50 BB=LPY-66.00-TD
N60 cc=(TD*1.5)/2 ; stepover amount
N70 DD=LPY-(2*AA) ;# of passes

N80 X66.60+TD Y=66.6+TD Z=PRK TP2 PRF=0 G40 F3 L=PON
N90 G1 ZI 6.00
N100 EE=0
:1
N110 EE=EE+1
N110 JM(EE>=DD):2
N120 G1 X=AA
N130 YI=CC
N140 G1 X=66.6+TD
N141 YI=CC
N150 JM:1

:2 ;CLEANUP EDGE PASS
N160 G1 X=66.6+TD Y=BB
N161 G1 X=AA
N162 G1 Y=66.6+TD
N163 G1 X=66.6+TD
N164 G1 Y=BB

With it, Issues i am having are,
N110 to N150 .The JM(EE>=DD):2 Does not count down unless i add JM(EE>=DD/14.25):2 this way i get a full toolpath in work area.
Since i have a steppover of 7.125, The program jumps two steps in X in the loop and i can not finish the pocket without being short one tool pass in the X axis. Even if pannel sizes are increased with different stepovers not quite right."Not smooth like Molson Canadian"
I could run it like this with two cleanup passes, but that bits.

Thanks
Dan

5. i didnt run the code. just altered yours on screen, after a few beers.
never expected it to run fully first time :-)

i normally would work out number of passes then subtract one every loop, then when its 0 make the jump

might work better if i put the /2 on the right line
N60 cc=(TD*1.5) ; stepover amount ; 75%tool stepover
N70 DD=(LPY-(2*AA)/2)/cc ;# of passes

divided by 2 as the toolpath in loop gives 2 passes in x , not 1

hopefully that will get you a bit closer

it may still need tweeking and hopefully you can follow what its doing.
having a biesse you have to do code like this . its a pain

try doing this! [nomedia="http://www.youtube.com/watch?v=dWp__rJURpU"]YouTube - Biesse "duzzit" cnc . fast oak roughing (love part1)[/nomedia]

6. Thanks again
I was looking only in the box not outside.(loop)
I added line N104 to complete the pass after the loop,and "wam" there it was,
I will attach final program if you want to try it, just check your tool config depths.
The reason i posted was that i didn't do a (loop) for at least ten years,didn't know if it was right since all i use is Mastercam and it will "Not" do parametric.
Dan

on 480 control, what is the maximum program size you can run?
how do you interface yours with mastercam?