Delta Tau GEO BRICK LV User Manual

Page of 440
Turbo PMAC User Manual 
Writing and Executing Motion Programs
 
301
 
However, if there is no intersection between the two compensated move paths, the change is introduced 
linearly over the next move. 
Programmed
Path
Tool Center
Path
Change Through an Arc
Change Through a Line
Change in Reversal
Cutter Compensation Change of Direction – No Intersection
Line
Line
Arc
Arc
Arc
Arc
Programmed
Path
Tool Center
Path
Change Through a Line
Line
Line
Line
Line
Line
Line
Programmed
Path
Tool Center
Path
Line
Line
Line
Line
Arc
Spiral
r
CC2
CC1
Programmed Path
Line
Tool Center Path
Line
CC2
CC1
CC2
CC1
CC2
CC1
 
How Turbo PMAC Removes Compensation 
Turbo PMAC gradually removes compensation over the next LINEAR or CIRCLE-mode move following 
the CC0 command that turns off compensation.  This lead-out move starts at a point one cutter radius 
away from the intersection of the lead-in move and the first fully compensated move with the line from 
the programmed point to this compensated endpoint being perpendicular to the path of the first fully 
compensated move at the intersection.  Note that few controllers can make their lead-out move a 
CIRCLE-mode move.  This capability permits releasing contact with the cutting surface very gently, 
important for fine finishing cuts. 
Inside Corner 
If the last fully compensated move and the lead-out move form an inside corner, the lead-out move starts 
directly from this point to the programmed endpoint.  When the lead-out move is a LINEAR-mode move, 
the compensated tool path will be at a diagonal to the programmed move path.  When the lead-in move is 
a CIRCLE-mode move, the compensated tool path will be a spiral. 
Line to Line
Line to Arc
Arc to Arc
Arc to Line
Removing Compensation – Inside Corner
Line
Line
Programmed
Path
Tool Center
Path
Arc
Arc
r
Line
Line
Line
Line
Programmed
Path
Tool Center
Path
r
Line
Line
Programmed
Path
Tool Center
Path
Spiral
Arc
r
Spiral
Arc
Programmed
Path
Tool Center
Path
Arc
Arc
r
CC0
CC0
CC0
CC0