System information

SECTION FOUR - PREPARATORY FUNCTIONS (G CODES)
Step 6. Note how points 1, 2, 10, and 11 have been moved slightly. The result will be as
follows.
Note: It is now seen that when the tool moved from (2) to (3), and (9) to (10), the corner will be
properly cut.
In Step 6, the cutter compensation was turned on by using the G41 command for turning on left
cutter compensation at point (2) and turned off by using the G40 command at point (11).
Notes on Steps 1-6
Note 1: Points (1) and (11), being the start and end points, were chosen so that they lie
sufficiently away from the part surface. Sufficient implies a distance more than
the total expected compensation.
Note 2: Circle at (9) and (8) points to complications that will arise if the tool radius is
too large. As the radius is increased, (9) and (8) will keep moving closer
together until, at one point of the radius, they will become identical. If the
radius is increased further, the tool radius will have become too large to make
the circle and the system will give an error telling the operator that an inter-
section cannot be found at that line.
Note 3: If a compensated path can be successfully sketched by hand, then it will run on
the system. However, if the sketch yields a missing intersection, the control will
give an error 507 or 509.
Note 4: Until the operator becomes familiar with cutter compensation, it is advisable
that rough sketches be made for the compensated path before the part is run as
a program.
242