
PROGRAMMING19. HIGH SPEED CUTTING FUNCTIONS
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By setting the corresponding parameter, the linear or non–linear
interpolation type can be selected. (In the AI nano contour control mode,
the non–linear interpolation type cannot be selected.)
When the linear interpolation type is selected, acceleration/deceleration
is performed before interpolation and linear interpolation type
positioning is used for movement. For acceleration/deceleration, linear
or bell–shaped acceleration/deceleration can be selected by setting the
corresponding parameter. (To select bell–shaped acceleration/deceleration,
the option of bell–shaped acceleration/deceleration for rapid traverse is
required.)
The feedrate during movement and acceleration for acceleration/deceleration
before interpolation are obtained as follows:
(1) Feedrate during movement
The minimum value obtained using the following expression for each
axis along which movement is done is used as the feedrate during
movement:
Rapid traverse rate for each axis (parameter No. 1420) =
Amount of travel in block
Amount of travel for each axis
(2) Acceleration for acceleration/deceleration before interpolation
D For linear acceleration/deceleration
The minimum value obtained using the following expression for each
axis along which movement is done is used as the acceleration for linear
acceleration/deceleration before interpolation during movement:
Rapid traverse rate for each axis (parameter No. 1420)
Time constant for each axis (parameter No. 1620)
Amount of travel in block
Amount of travel for each axis
D For bell–shaped acceleration/deceleration
The time constant set in parameter No. 1621 (time constant for
bell–shaped acceleration/deceleration for rapid traverse for each axis) for
the axis for which the minimum value is obtained using the above
expression is applied to the feedrate obtained using the above
acceleration.
D Rapid traverse