Specifications

14.3
Motion Control
14
-59
14.3.2 Acceleration/Deceleration
 Feed axes
For acc./dec. of feed axes, the pre-interpolation acc./dec. typically used for rapid machining
is always enabled.
Acc./dec. control can achieve more effective acc./dec. by controlling both rate and jerk of
acc./dec. (factor for S-shaped acc./dec.).
However, for G00 feed, different rate and jerk of acc./dec. from those for maching can be
set.
For examples of machine data setting including those for rapid, precise machining, see sec-
tion 14.4.4.
Also, the post-interpolation acc./dec. (acc./dec. For each axis) can be performed in previous
ways.
For more information, see the setting method for post-interpolation acc./dec..
• MD20150 [20] GCODE_RESET_VALUES
Meaning: Default setting of acc./dec. jerk
Setting value: 1---BRISK (jerk is disabled) is set by default.
2---SOFT (jerk is enabled) is set by default.
Standard setting value: 2
• MD20600 MAX_PATH_JERK
Meaning: Acc./dec. jerk (acceleration rate)
Setting value: [mm/sec
3
] or [deg/sec
3
]
Note: Applied for G00 and G01.
To set acc./dec. jerk for each axis with MD32431 MAX_AX_JERK,
use a larger value (ex. 1,000,000 for initial value) for this than the
value with MD32431. If there occurs some kind of vibration, set the
20 to 50 % smaller value for this machine data than the maximum
value with MD32431.
Do not use MD32410 AX_JERK_TIME together with pre-interpola-
tion acc./dec., because the machine data is post-interpolation acc./
dec. jerk and affects machining profile errors.
• MD20602 CURV_EFFECT_ON_PATH_ACCEL
Meaning: Acceleration factor of curve section
By setting this machine data, the sum of tangential component and cen-
trifugal component in curve section can be calculated to meet the value
with MD32300.
Where,
• Tangential component: Decrease the acceleration speed in the curve
section as shown with MD32300 × (1.0 - MD20602).
• Centrifugal component: Decrease the speed at the corner of curve sec-
tion as shown with MD32431 × MD20603.
Setting value: 0 to 1.0
Standard setting value: 0.75