
7. Feed Functions
7.7 Rapid Traverse Constant Inclination Acceleration/Deceleration
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7.7 Rapid Traverse Constant Inclination Acceleration/Deceleration
Function and purpose
This function performs acceleration and deceleration at a constant inclination during linear
acceleration/deceleration in the rapid traverse mode. Compared to the method of acceleration
/deceleration after interpolation, the constant inclination acceleration/deceleration method makes
for improved cycle time.
Detailed description
(1) Rapid traverse constant inclination acceleration/deceleration are valid only for a rapid traverse
command.
Also, this function is effective only when the rapid traverse command acceleration/deceleration
mode is linear acceleration and linear deceleration.
(2) The acceleration/deceleration patterns in the case where rapid traverse constant inclination
acceleration/deceleration are performed are as follows.
<When the interpolation distance is longer than the acceleration and deceleration distance>
θ
L
T s
T s
T d
T
Next block
rapid
rapid : Rapid traverse rate
Ts : Acceleration/deceleration time
constant
Td : Command deceleration check time
θ
: Acceleration/deceleration inclination
T : Interpolation time
L : Interpolation distance
T =
rapid
L
+Ts
Td = Ts + (0~1.7 ms)
θ
= tan
-1
rapid
Ts
(
)
<When the interpolation distance is shorter than the acceleration and deceleration distance>
rapid: Rapid traverse rate
Ts: Acceleration/deceleration time constant
Td: Command deceleration check time
θ
: Acceleration/deceleration inclination
T: Interpolation time
L: Interpolation distance
θ
L
Ts
Td
T
rapid
Next block
θ
= tan
-1
rapid
Ts
(
)
Td =
+ (0
~
1.7 ms)
T
2
T = 2
×
√
Ts X L / rapid