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peck drilling
« on: June 05, 2017, 08:39:53 PM »
just a question about peck drilling. I decided to use mach4 for it's first job this weekend. created the job in aspire using the 2010 screenset post. loaded the file into mach4 and got everything setup. when i ran the file some strange behaviour was observed. After the first hole which seemed to go ok, the bit did not pickup out of the material and instead stayed at a depth in the material this cut a long line across the material quite deep, until the bit broke. (aluminum with 1/8 carbide upcut spiral). I then switched over to mach3 used the same file and it worked exactly as it should have.

So is peck drilling implemented in mach4 or the ESS driver?

On another topic, it's nice that keyboard input is now made to switch on/off with program focus. what's not nice is that keyboard input and button input do not react the same when changing modes to incremental/continous. keyboard seems to stay in continous whereas button control follows the mode of the incremental button. definitely was not expecting a full size movement when I was expecting 0.01" of movement.
Re: peck drilling
« Reply #1 on: June 06, 2017, 02:43:02 AM »
Hi,
I had the same or at least similar problem a while back... cant quite remember how it panned out but will try to find the post.

The upshot is that peck drill Gcode in Mach3 is not exactly conformant to the Gcode standard but it still works, ie Mach3 doesn't care too much.
The same Gcode in Mach4 won't work because Mach4 demands good Gcode. I'll see if I can't find some examples of what I mean. I recall doing
a wee edit on my Gcode and the everything was fine.

Craig
My wife left with my best friend...
     and I miss him!
Re: peck drilling
« Reply #2 on: June 06, 2017, 02:58:07 AM »
Hi,
found a post which might help
http://www.machsupport.com/forum/index.php/topic,33845.0.html

Note in particular that Mach4 doesn't like a G83 code on each line, it requires one at the start with all the peck parameters
but thereafter it just requires the XY of the next hole.

Craig


My wife left with my best friend...
     and I miss him!
Re: Fanuc G73 peck drilling
« Reply #3 on: August 21, 2018, 12:27:38 PM »

   
 Friends, we have to know which type of drilling is done more in depth. for deep drilling is considered as  DEPTH/ DIA => 5
The benefits of peck drilling reduce cycle time. In G73 peck drilling after each drill, tool retract only 1 mm.This drilling cycle is used mostly drill soft materials like; Aluminium



O4231
N10   M06 T06 ;
N20   G90 G80 G17 G00 G54 X0 Y0 ;
N30   G43 Z100 H11 ;
N40   M03 S1500 ;
N50   M08 ;
N60   G99 G73 Z-55 R5 Q20 F300 ;
N70   G98 G80 G00 Z100 ;
N80   M05 M09 M30 ;
                                                                                More examples..........!!!!
DESCRIPTION OF PROGRAM

N10- Tool change command , select tool no. 6
N20- Absolute co-ordinate command , cancel canned cycle command , selection of  XY plane, rapid command, work coordinate for tool positioning at  X0 and Y0.
N30- Tool height offset compensation command , where tool is 100 along Z axis , tool hight code H11.
N40- Spindle on clockwise , speed is 1500 rpm .
N50- Coolant ON .
N60- Return to R-plane in canned cycle , Peck drilling cycle command , Depth of drill is 55 , R- plane distance is 5 , depth of each cut is 20(incremental), feed rate per minute is 300 .


N70- Tool is return at intial position , cancel canned cycle , rapid command where tool is 100 mm up along z axis.
N80- Spindle off , coolant off , main program end .

FOR MORE MY LINK IS - http://www.hdknowledge.com/2018/08/how-do-i-make-fanuc-program-with-g73-high-speed-peck-drilling-cycle.html