Table of Contents
Advertisement
Proceed as follows to set the safe reduced velocity (<10 mm/s):
▶ Connect a pressure gauge to measuring point MX1.
– To do this, remove the protective cap at the measuring point MX1.
▶ Retract the die cushion cylinder to the end stop (end stop must be able to
withstand the maximum cylinder force).
▶ Switch off the pumps and all valves.
▶ Ensure that the piston chamber pressure at the measuring point MX1 = 0 bar.
▶ If necessary, connect a suitable hose to the measuring point MX1 and discharge
the hydraulic fluid into a suitable oil tray until the pressure has completely
reduced.
▶ Relieve the annulus area of the cylinder, e.g. by manually actuating the B-side
of the directional valve .110 in the parallel position.
The pressure is only released up to approx. 3 bar preload pressure of the
tank line.
▶ Connect a suitable hose to the measuring point MX2 and discharge the
hydraulic fluid into a suitable oil tray until the pressure has completely
reduced.
– To do this, remove the protective cap at the measuring point MX2.
▶ Connect a pressure gauge to the measuring point MX2 and ensure that
the pressure at this measuring point is 0 bar.
▶ Remove the directional valve .170 as the nozzles .171/.172 are mounted
directly below the valve.
▶ Adjust the nozzles .171/.172 to the safe reduced velocity (<10 mm/s),
see chapter 7.3.1. Close/extend with minimum load pressure and open/retract
with maximum load pressure.
▶ Reinstall directional valve .170.
For the tightening torque, refer to data sheet 23178, see chapter 1.2
"Required and additional documentation".
▶ Select the "DOWN" jog mode.
▶ Verify that the closing velocity is below 10 mm/s.
▶ Ensure that the pressure in the annulus area of the cylinder at the measuring
point MX2 does not drop to zero during retraction (cavitation).
▶ Remove the pressure gauge from the measuring points MX1 and MX2 and
reassemble the protective caps.
– Ensure that the measuring points MX1 and MX2 are closed without leaks.
▶ Select the operating mode "OFF".
Commissioning | Press module Type IH04E
RE 63129-MON, Edition 09.2022, Bosch Rexroth AG
35/48
Advertisement
Table of Contents
