Function Description; Parameter Description (Parameter For Tip Dresser With Impulse Dressing) - Bosch Rexroth PRC 7 00-L-0301-Serie Typspezifische Anleitung

R911405013 | PRC 7x00-Lx/Wx-0301 Bosch Rexroth AG | Electric Drives and Controls
9.5.2

Function description

• Pulse start dressing is started via service program xx27 and pulse follow-on
dressing via service program xx28.
• The prerequisite in each case is that the dresser has been started beforehand,
otherwise a corresponding error message "10025 PLC tip dressing aborted
cause no dresser movement" is output.
The sequence parameters for dressing are stored in spots xx27
•
/ xx28 with the corresponding Weldjobs. (e.g. duration / force /
etc.)
The opening width of the gun between the pulses is defined by
•
the gun parameter "Pre-position at sheet search".
• The dressser is started by service program xx23 and stopped by service
program xx24.
• The dresser drive assigned to the respective gun / electrode of the service
program runs.
The parameters for the dresser (speed, etc.) are stored in the
•
tip settings parameters.
In pulse dressing, neither revolutions are counted nor changed
•
in step 2 of the dressing sequence.
So the pulse duration of the dressing is only determined by the
•
Weldjob time and only the speed (step 1) is driven.
The tip dresser determines its operating mode according to the
•
tip status when starting the tip dresser: The tip status "New" or
"Start dressing required" starts the operating mode "Start
dressing" otherwise the operating mode "Follow milling" is
selected.
(This behavior is not influenced by the selection of the milling
service programs (xx27 or xx28)).
Depending on the operating mode, the dresser selects its
•
speed parameters for start or sequential dressing.
Notes:
• At the end of the pulse dressing service program, an automatic "Acknowledge
dressing" (resetting of the wear counters) is performed.
• This also applies to faulty / aborted dressing sequences if the target force was
reached at least once in them.
• After execution of the service program, a position reset must be performed.
• Gun compensation is not active during pulse dressing.
• The "Opening velocity" corresponds to the "Contact velocity" of the servo gun.
Note: Signal diagrams can be provided after consultation.
9.5.3 Parameter description (Parameter for tip dresser with impulse
dressing)
Tip setting parameter description for dresser with impulse dressing
Tab. 2:
Tip settings parameter Unit
Dresser rotation speed U/min
Dresser rotation speed U/min
(Start dressing)
Description
Start speed of the dressing cutter during
dressing (weighted on the speed of the
dresser blade).
Start speed of the dressing cutter during start
87/92