
7.FEEDRATE CONTROL/ACCELERATION AND DECELERATION CONTROL B-63783EN-1/01
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7.1.8 Automatic Corner Override
Overview
- Inner corner automatic override
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. 7.1.8 (a)).
2°≤θ≤θp≤178°, in Fig. 7.1.8 (a). θp is a value set with parameter No.
6611. When θ is approximately equal to θp, the inner corner is
determined with an error of 0.001,or less.
Fig. 7.1.8 (a) Inner corner
NOTE
When the block before a corner is a start-up block, or
the block after a corner includes G41 or G42, the
feedrate is not overridden. The feedrate override
function is disabled when the offset value is 0.
- Override value
An override value is set with parameter No. 6612. An override value is
valid even for dry run and F1-digit feed specification.
In the feed per minute mode, the actual feedrate is as follows:
F × (inner corner automatic override) × (feedrate override)
1.Straight line-straight line
:Cutter center path
:Tool
:Programmed path
2.Straight line-arc
3.Arc-straight line
4.Arc-arc
θ
θ
θ
θ