Mitsubishi Electric MELDAS C6 Programming Manual page 272

13. Program Support Functions
Arc entrance/exit speed control
There are cases when the speed fluctuates and the machine vibrates at the joint from the straight
line to arc or from the arc to straight line.
This function decelerates to the deceleration speed before entering the arc and after exiting the arc
to reduce the machine vibration. If this is overlapped with corner deceleration, the function with the
slower deceleration speed is valid.
The validity of this control can be changed with the base specification parameter "#1149 cireft".
The deceleration speed is designated with the base specification parameter "#1209 cirdcc".
(Example 1) When not using corner deceleration
<Program>
G61.1 ;
•
•
N1 G01 X-10. F3000 ;
N2 G02 X-5. Y-5. J-2.5 ;
N3 G01 Y-10. ;
•
•
<Deceleration pattern>
Speed
Commanded speed
Arc clamp speed
Arc deceleration speed
264
13.12 High-accuracy control
<Operation>
N2
N3
N1
N2
N1
N3
Time