YASKAWA MP2000 Series User Manual page 126

( 1 ) Parameter Setting Example Using Ball Screw
• Machine specifications: Ball screw axis rotates 5 times for each 7 rotations of the motor axis (Refer to the follow-
• Reference unit: 0.001 mm
To move the workpiece 0.001 mm for 1 reference unit input under the conditions outlined above, i.e., for 1 reference
unit = 1 output unit, make the following settings for fixed parameters 6, 8, and 9.
• Fixed Parameter 6: Travel distance per machine rotation = 6 mm/0.001 mm = 6000 (reference units)
• Fixed Parameter 8: Servo motor gear ratio = m = 7
• Fixed Parameter 9: Machine gear ratio = n = 5
( 2 ) Parameter Setting Example Using Rotating Table
• Machine specifications: Rotating table axis rotates 10 times for each 30 rotations of the motor axis (Refer to the
• Reference unit: 0.1°
To rotate the table 0.1° for 1 reference unit input under the conditions outlined above, i.e., for 1 reference unit = 1 out-
put unit, make the following settings for fixed parameters 6, 8, and 9.
• Fixed Parameter 6: Travel distance per machine rotation = 360°/0.1° = 3600 (reference units)
• Fixed Parameter 8: Servo motor gear ratio = m = 30
• Fixed Parameter 9: Machine gear ratio = n = 10
 The gear ratio for fixed parameters 8 and 9 (m/n) may be constant, e.g., m = 3 and n = 1.
ing figure.)
Motor
m = 7 rotations
n = 5 rotations
following figure.)
Workpiece (Rotating table)
m = 30 rotations
Motor
6.1 Example Setting of Motion Parameters for the Machine
Workpiece
Ball screw
P (pitch) = 6 mm/rotation
360°/rotation
n = 10 rotations
6.1.2 Electronic Gear
6
6-3