3 Fundamentals of press design

Sheet metal forming lines
Fig. 4.4.48 Overview of one day’s production data
– set drawing pressure values
– actual drawing pressure values
– actual system pressure values
– press angle
– slide position and
– draw cushion position.
The CMS comprises a unit for measured data acquisition and an industrial
PC with software capability for acquisition, evaluation and display of
the above signals and data. The system permits the graphic display of the
progress of pre-acceleration, the drawing process and upstroke both in the
form of an overview (Fig. 4.4.49 and cf. Sect. 3.1.4) and detail displays.
The measurement can be depicted in real time for every individual stroke.
Zoom functions and the optional representation of measured values relative
to the time or the press crank angle permit detailed analysis of measured
values. The measurements are stored in the PC and can be accessed
at a later date if required. In addition, the CMS provides diagnostic images
for troubleshooting and settings during start-up of the press line.
Metal Forming Handbook / Schuler (c) Springer-Verlag Berlin Heidelberg 1998
265