Siemens SINUMERIK 802D

Programming
10.3 Axis movements
Cylindrical grinding
Programming and Operating Manual, 07/2009, 6FC5398-4CP10-2BA0
269
10.3.11 Acceleration pattern: BRISK, SOFT
BRISK
The axes of the machine change their velocities using the maximum permissible acceleration
value until reaching the final velocity. BRISK allows time-optimized working. The set velocity
is reached in a short time. However, jumps are present in the acceleration pattern.
SOFT
The axes of the machine accelerate with nonlinear, constant curves until reaching the final
velocity. With this jerk-free acceleration, SOFT allows for reduced machine load. The same
behavior can also be applied to braking procedures.
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Figure 10-22 Principle course of the path velocity when using BRISK/SOFT
Programming
BRISK ; Jerking path acceleration
SOFT ; Jerk-limited path acceleration
Programming example
N10 SOFT G1 X30 Z84 F6.5 ; Jerk-limited path acceleration
...
N90 BRISK X87 Z104 ; continuing with jerking path acceleration
...