Punching and Nibbling (N4)
15.2 Stroke control
Turning, Milling, Nibbling
268
Function Manual, 11/2012, 6FC5397-1CP10-5BA0
15.2.3
Criteria for stroke initiation
Initiate a stroke
The stroke initiation must be set, at the earliest, for the point in time at which it can be
guaranteed that the axes have reached a standstill. This ensures that at the instant of
punching, there is absolutely no relative movement between the punch and the metal sheet
in the machining plane.
The following diagram shows the various criteria that can be applied to stroke initiation.
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Figure 15-2 Signal chart: Criteria for stroke initiation
The time interval between t
1
and t
2
is determined by the reaction of the punching unit to
setting of output A
0
. This cannot be altered, but can be utilized as a lead time for minimizing
dead times.
The diagram above shows the default setting with which the output is set when the "Exact
stop fine window" is reached (
G601
; default setting of G group 12). The punch initiation times
t''
1
and t'
1
are programmed by means of
G602
and
G603
(see table below).