Selca G77 Polygonal pocket
Programming
G77 X... Y... [I...] [J...] [K...] [D0=...] [D1=...][D2=...] [D3=...] [D4=...] [D6=...] [D7=...] [D8=1] [D9=...]
Parameters
| Parameter | Description |
|---|---|
| X,Y | first point of the pocket. |
| I | stock allowance, removed only if a finish pass is programmed by a G79. |
| J | distance between passes in tool radius units (default value J=1.6). |
| K | edge linking radius. |
| D0 | machining mode selection. D0=0 from the border toward the center, with Z increments only (default). D0=1 from the center toward the border, with Z increments only D0=2 from the center toward the border, with increments in X, Y, Z D0=3 defines a special use of G77 for milling profiled pockets with passes parallel to the profile |
| D1= | pocket starting depth. |
| D2= | pass depth. |
| D3= | pocket bottom depth. |
| D4= | clearance distance (default value D4=2 mm). |
| D6= | wall taper rate (default value D6=0- vertical wall). |
| D7= | percentage of feed rate variation during depth increment (default value D7=1). |
| D8=1 | if D0=3 is programmed, programs island milling. |
| D9= | clearance value from pocket walls during tool repositioning at end of cycle (D9=0.5mm by default). |
Note: the following blocks define the pocket profile.
