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MDS-D-SVJ3/SPJ3 Series Instruction Manual
4-4 Characteristics improvement
(2) Adjusting the cutting feed
To adjust the cutting rate, the NC axis specification parameter clamp speed (clamp) and acceleration/
deceleration time constant (G1t*) are adjusted. The in-position width at this time must be set to the
same value as actual cutting.
• Determining the clamp rate and adjusting the acceleration/deceleration time constant
(Features)The maximum cutting rate (clamp speed) can be determined freely.
(Adjustment)Carry out cutting feed reciprocation operation with dwell at the maximum cutting rate and
adjust the acceleration/deceleration time constant so that the maximum current command
value during acceleration/deceleration is within the range shown below.
• Setting the step acceleration/deceleration and adjusting the clamp speed
(Features)The acceleration/deceleration time constant is determined with the position loop in the servo,
so the acceleration/deceleration FΔT can be reduced.
(Adjustment)Set 1 (step) for the acceleration/deceleration time constant and carry out cutting feed
reciprocation operation with dwell. Adjust the cutting feed rate so that the maximum current
command value during acceleration/deceleration is within the range shown below, and then
set the value in the clamp speed.
Maximum tolerable current command value when adjusting the cutting feed acceleration/deceleration time constant
Motor
model
Max. tolerable
current command
value
Motor
model
Max. tolerable
current command
value
HF75 Within 245% HF-KP13 Within 168%
HF105 Within 189% HF-KP23 Within 175%
HF54 Within 294% HF-KP43 Within 175%
HF104 Within 245% HF-KP73 Within 168%
HF154 Within 266%
HF224 Within 217%
HF204 Within 196%
HF354 Within 161%
HF123 Within 133%
HF223 Within 161%
HF303 Within 168%
HF142 Within 133%
HF302 Within 147%