Ple, the die shown in figure 1, Figure 1 shows the f, Slide bolster – LINK Systems 5100-8 Tonnage & Analog Signal Monitor User Manual
Page 10
Doc
#:
L-802-1110 Page
8
Rev.
02
SLIDE
BOLSTER
UPPER DIE
Punches
hit at the
same time
SLIDE
BOLSTER
UPPER DIE
Punches
hit at the
same time
TOTAL
200 TONS
100 TONS
100 TONS
LEFT
CHANNEL
RIGHT
CHANNEL
t
1
t
1
t
1
TOTAL
200 TONS
100 TONS
100 TONS
LEFT
CHANNEL
RIGHT
CHANNEL
t
1
t
1
t
1
t
1
t
1
t
1
SLIDE
BOLSTER
UPPER DIE
Punches
hit at the
same time
SLIDE
BOLSTER
UPPER DIE
Punches
hit at the
same time
TOTAL
200 TONS
100 TONS
100 TONS
LEFT
CHANNEL
RIGHT
CHANNEL
t
1
t
1
t
1
TOTAL
200 TONS
100 TONS
100 TONS
LEFT
CHANNEL
RIGHT
CHANNEL
t
1
t
1
t
1
t
1
t
1
t
1
Figure 1: Example Die 1 with Signature
When forces occur on the individual channels at different positions in the stroke (at different times), the
total force depends on the amount of force exerted at any specific position. If the die described in the
previous example had punches of different lengths as shown in Figure 2, the punches would not impact
the material at the same position in the stroke.
SLIDE
BOLSTER
UPPER DIE
Punches
hit at
different
times
SLIDE
BOLSTER
UPPER DIE
Punches
hit at
different
times
TOTAL
100 TONS
60 TONS
40 TONS
LEFT
CHANNEL
RIGHT
CHANNEL
t
1
t
1
t
1
40 TONS
t
2
t
2
t
2
60 TONS
100 TONS
TOTAL
100 TONS
60 TONS
40 TONS
LEFT
CHANNEL
RIGHT
CHANNEL
t
1
t
1
t
1
t
1
t
1
t
1
40 TONS
t
2
t
2
t
2
t
2
t
2
t
2
60 TONS
100 TONS
SLIDE
BOLSTER
UPPER DIE
Punches
hit at
different
times
SLIDE
BOLSTER
UPPER DIE
Punches
hit at
different
times
TOTAL
100 TONS
60 TONS
40 TONS
LEFT
CHANNEL
RIGHT
CHANNEL
t
1
t
1
t
1
40 TONS
t
2
t
2
t
2
60 TONS
100 TONS
TOTAL
100 TONS
60 TONS
40 TONS
LEFT
CHANNEL
RIGHT
CHANNEL
t
1
t
1
t
1
t
1
t
1
t
1
40 TONS
t
2
t
2
t
2
t
2
t
2
t
2
60 TONS
100 TONS
Figure 2: Example Die 2 with Signature
The graph in Figure 2 shows that the punch on the left contacts the material first and exerts a total force
of 100 tons at time t1, with 60 tons distributed to left side of the machine frame and 40 tons distributed
to the right. After the left punch breaks through the material, and at a different position in the stroke, the
punch on the right contacts the material and exerts a total force of 100 tons at time t2, with 60 tons
distributed to the right side of the machine frame and 40 tons distributed to the left. This process would
result in the tonnage monitor displaying that the maximum tonnage measured on the left side of the