3 Fundamentals of press design

Shearing lines
– provision of all important data to the operator during production, to
allow on-going assessment of machine status,
– support for the operator in troubleshooting and repair work in case
of machine failure,
– clearly arranged indication of maintenance intervals and instructions
on the execution of necessary work,
– production log to inform the operator on the type and time of previous
faults and maintenance work – operators must be able to enter
and access their own comments,
– a software system which is sufficiently open-ended to allow other
applications such as job management, quality assurance, operational
data acquisition or remote diagnostics.
Compliance with all these requirements imposes stringent demands on
the control and in particular on the software system. While these
requirements exceed the capability of a programmable logic controller
(PLC), industrial PCs possess practically all the components necessary
for compliance with these specifications. The industrial PC is not only
highly efficient, but also benefits from an open-ended software system,
offering graphic user interfaces and object-oriented programming
through the use of powerful programming tools.
Job preparation
job sheet,
job management
documentation
Maintenance/repairs
maintenance
execution
log
quality assurance
measurement-control
Production
operating, monitoring
signalling
line operating
and
information system
Acquisition of
operational data
production data, machine
data, statistics
documentation
Fig. 4.6.34 Demands made on modern operating and visualization systems
Metal Forming Handbook / Schuler (c) Springer-Verlag Berlin Heidelberg 1998
Operating parameters
input and editing of
process parameters
tool data management
Failure diagnostics
error message
failure diagnostics
remote diagnostics
321