
PROGRAMMING
B–63514EN/01
5. FEED FUNCTIONS
67
When cutter compensation is performed, the movement of the tool is
automatically decelerated at an inner corner and internal circular area.
This reduces the load on the cutter and produces a smoothly machined
surface.
When G62 is specified, and the tool path with cutter compensation
applied forms an inner corner, the feedrate is automatically overridden
at both ends of the corner.
There are four types of inner corners (Fig. 5.4.2.1 (a)).
2_
xθxθpx178_ in Fig. 5.4.2.1 (a)
θp is a value set with parameter No. 1711. When θ is approximately
equal to
θp, the inner corner is determined with an error of 0.001,or
less.
θ
:Cutter center path
:Tool
:Programmed path
θ
θ
θ
1. Straight line–straight line 2. Straight line–arc
3. Arc–straight line 4. Arc–arc
Fig. 5.4.2.1 (a) Inner corner
5.4.2
Automatic Corner
Override
5.4.2.1
Automatic Override for
Inner Corners (G62)
Explanations
D Override condition