What's new
What's new

incremental polar hole drilling

bspear

Plastic
Joined
Feb 10, 2018
Fanuc 0i MD mill

OK, probably something obvious.....

Trying to drill 20 pcd holes using incremental polar movement so I can simply copy/paste the increment line, set G55 to the hole centre

G55
G0 X0 Y0
G91 G16 G81 Z-2 R0 X100 Y0 F100
X0 Y18
X0 Y18
.....etc
G80
G90 G15

This drills in the same place each time, whats up?

Cheers
 
Fanuc 0i MD mill

OK, probably something obvious.....

Trying to drill 20 pcd holes using incremental polar movement so I can simply copy/paste the increment line, set G55 to the hole centre

G55
G0 X0 Y0
G91 G16 G81 Z-2 R0 X100 Y0 F100
X0 Y18
X0 Y18
.....etc
G80
G90 G15

This drills in the same place each time, whats up?

Cheers
Hello bspear,
Specify the radius (the distance between the zero point and the target point) with an absolute command.

Try the following:

G17 G90 G16
G81 X100.0 Y0.0 Z-2.0 R0 F100
G91 Y18.0
Y18.0
....etc

G90 G15 G80

Regards,

Bill
 
try a straight line move with G68 R45.
.
1) some cnc need a parameter turned on to allow coordinate rotation
.
2) some are looking for R45. or R45000 or some specific way angle entered and most cnc when M2 or M30 or reset pressed G69 or coordinate rotation cancel is part of defaults. i would confirm this
.
just saying look in your manuals and if it still dont work its maybe a parameter setting thats preventing it
 
Bill's program should work.

G16 should be selected and the first hole be drilled in absolute mode.
For equi-spaced holes number of repeats (K) can be specified in incremental mode, for subsequent holes.
 
Re: pcd holes using incremental polar - SORTED

Sorted, enable the incremental after the initial G81 line, cheers again chaps
 








 
Back
Top