Siemens Simotion A4027118-A0414 - Manual (Page 12)

Section A: Prerequisites and objectives
Basic information
Flying Saw with SIMOTION A4027118-A0414
V 1.4 Release 06/06/08 12/107
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Principle design of a "flying saw"
The material is fed-in as an endless web (e.g. plastic, sheet steel or fiber
board) using a conveyor belt that runs with a constant velocity.
The position of the cut on the material web is either sensed using a print
mark using a sensor or is specified by the control after a cut length has
been passed that can be adjusted. The synchronous position is
simultaneously defined. From this point onwards, the shears slide of the
flying saw synchronously follows the material at the position to be cut and
the cut can be started. After the cut has been completed, the shears slide is
returned to its starting position where it waits for the next cut position.
Fig. 1-1: Principle of operation of the “flying saw”
Drive of flying saw
Web drive
or
measuring system
Sensor Starting position
1.2.2 Solution using the standard “flying saw” application
The standard “flying saw” application discussed here can be used to
implement such applications, and to develop a functioning "flying saw" as
quickly as possible.
The standard application already includes, as core function, a pre-
configured motion control of the flying saw axis. This can be adapted to the
particular application using the appropriate parameters. The core function is
responsible for completely controlling the flying saw axis.