B--63003EN--1/02
7. FEEDRATE CONTROL/ACCELERATION
AND DECELERATION CONTROL
546
An override value is set with parameter No. 1712. 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)
For internally offset circular cutting, the feedrate on a programmed path
is set to a specified feedrate (F) by specifying the circular cutting feedrate
with respect to F, as indicated below. This function is valid in the cutter
compensation mode, regardless of the G62 code.
F ×
Rc
Rp
Rc : Cutter center path radius
Rp : Programmed radius
It is also valid for the dry run and the F1--digit feed command.
RC
RP
Programmed path
Cutter center
path
Internal circular cutting feedrate change
If Rc is much smaller than Rp, Rc/Rp≐0; the tool stops. A minimum
deceleration ratio (MDR) is to be specified with parameter No. 1710.
When Rc/Rp
≦MDR, the feedrate of the tool is (F⌠MDR).
CAUTION
When internal circular cutting must be performed together
with automatic override for inner corners, the feedrate of the
tool is as follows:
(inner corner override)
(feedrate override)
F ×
Rc
Rp
×
1710
Minimum deceleration ratio (MDR) of the inner circular cutting
rate in automatic corner override
[Data type] Byte
[Unitofdata] %
[Valid data range] 1to100
Set the minimum deceleration ratio (MDR) in changing the inner circular
cutting feedrate by automatic corner override.
D Override value
D Internal circular cutting
feedrate change
Parameter