Structure Of An Electro-Hydraulically-Controlled Drive Axis - Siemens Sinumerik 840D Series Function Manual

1 General

1.3 Structure of an electro-hydraulically-controlled drive axis

1.3 Structure of an electro-hydraulically-controlled drive
axis
Fig. 1-1 Construction of an electro-hydraulically controlled drive axis
1.3.1 Machine guideway
Guide mechanism
Friction
1-18
SINUMERIK 840D,
SIMODRIVE 611 digital
with HLA module
Shutoff valve
Hydraulic power unit
Hydrodynamic and hydrostatic slideways or roller slideways allow machine
slides and tables to move in straight lines with minimum friction and maximum
precision.
A degree of friction can be very useful for damping oscillations.
However, excessive friction, especially pronounced transitions from static to
sliding friction, have a negative effect on the control result and impair the control
loop stability.
SINUMERIK 840D/SIMODRIVE 611 digital, HLA Module (FBHLA) - 10.03 Edition
Servo solenoid value with
valve amplifier (OBE)
Machine guideway
 Siemens AG, 2003. All rights reserved
02.99
10.03
Position
measuring
system