YASKAWA SGM-A3 User Manual page 222

SERVO SELECTION AND DATA SHEETS
5.1.1 Selecting a Servomotor cont.
1) Ball Screw Horizontal Axis
Load mass
Thrust
Coefficient of friction
Overall efficiency
Gear ratio
Gear+coupling
Ball screw pitch
Ball screw diameter
Ball screw length
2) Ball Screw Vertical Axis
Load mass
Counterweight
Coefficient of friction
Overall efficiency
Gear ratio
Gear+coupling
Ball screw pitch
Ball screw diameter
Ball screw length
5
3) Timing Belt
Load mass
Thrust
Coefficient of friction
Overall efficiency
Gear ratio
Gear+coupling
Pulley
Pulley diameter
4) Rack and Pinion
Load mass
Thrust
Coefficient of friction
Overall efficiency
Gear ratio
Gear+coupling
Pinion diameter
Pinion thickness
210
3) Machine Data Table
Fill out the machine data table below as an aid to selecting the drive system. When the
machine data table is complete, use the servomotor sizing software to select the motor
capacity.
W
F
µ
η
R (= Nm/Nl)
2
GD g
P
D
L
W
1
W
2
µ
η
R (= Nm/Nl)
2
GD g
P
D
L
W
F
µ
η
R (= Nm/Nl)
2
GD g
2
GD d
D
W
F
µ
η
R (= Nm/Nl)
2
GD g
D
t
kg (lb)
kg (lb)
Motor Motor
2 2
Gear+coupling
kg¡cm (lb¡in .)
GD GD
mm (in.)
mm (in.)
mm (in.)
kg (lb)
kg (lb)
Gear+coupling Gear+coupling
GD
2 2
kg¡cm (lb¡in .)
mm (in.)
mm (in.)
mm (in.)
Pulley
kg (lb)
kg (lb)
2 2
kg¡cm (lb¡in .)
2 2 Motor
kg¡cm (lb¡in .)
mm (in.)
kg (lb)
kg (lb)
2 2
kg¡cm (lb¡in .)
mm (in.)
mm (in.)
Table W Table W
Ball screw Ball screw
p g
2 2
g
Motor
2
g
B ll Ball screw
Timing belt
Gear+coupling Gear+coupling
2
GD g
W W
Pinion
Gear+coupling p g
Motor Motor
2 2
GD GD g
Rack Rack