Sss Control - Mitsubishi Electric M700V Series Programming Manual

13. Program Support Functions

13.17.2 SSS Control

Function and purpose
With conventional high-accuracy control, the angle between two blocks is compared with the
corner deceleration angle to determine whether to execute corner deceleration between the blocks.
This can cause the speed to suddenly change between the blocks with an angle close to the corner
deceleration angle, resulting in scratches or streaks.
With SSS (Super Smooth Surface) control, the user can predict the optimum machining speed,
using the large area of path information. Comparing to the conventional high-accuracy control
function, SSS control has more advanced features so that smoother workpiece cutting surface is
realized. The followings are some of the features available in SSS control.
(1) Speed fluctuation caused by the effect of the machining-disturbing blocks (minute
(2) Even if corner deceleration is not required, the speed is clamped if the predicted
Furthermore, the machining time can be reduced in machining applications having many corners.
The length of the path direction recognized with SSS control can be adjusted with the machining
parameter "#8091 StdLength". The range is increased as the setting value increases, and the
effect of the error is reduced.
(Note)
13.17 High-speed High-accuracy Control; G05, G05.1
stepping or waviness) is suppressed. Thus, scratches caused by these blocks are
reduced.
acceleration is high.
Feedrate
When corner deceleration
θ
angle is or less
Feedrate
When corner deceleration
θ
angle is or more
θ
This function is an option. The high-speed high-accuracy control II option is required to
use this function.
Conventional optimum
corner deceleration
Feedrate
Do not
decelerate
Time
Feedrate
=
Time
428
SSS control
Decelerate according
to angle
Time
Time