3-48 5BMaximum output tables B380EN03.DOC
5. Maximum output tables
5.1 Calculation formulae
The maximum permissible dimensions for round and square tools,
with and without shears, for four tensile strengths and various
sheet thicknesses can be taken from the maximum output tables.
For intermediate values of the sheet thickness and tensile strength,
either the next-lowest table value should be taken or the following
formulas should be used to calculate the workpiece dimensions.
Note
• Using angled tools (Whispertools) reduces the punching force
up to 72 % (sheet thickness 1 mm).
• Tools with roof shape also reduce the punching force, but not
as much as whispertools.
d
max
p
s
R
m
x
Maximum tool diameter, round (mm)
punching force (N)
sheet thickness (mm)
tensile strength (N/mm
2
)
shearing factor (in tools without shear = 1)
a
max
p
s
R
m
x
Maximum edge length, square) (mm)
punching force (N)
sheet thickness (mm)
tensile strength (N/mm
2
)
shearing factor (in tools without shear = 1)
L
max
p
s
R
m
x
Maximum cutting circumference (mm)
punching force (N)
sheet thickness (mm)
tensile strength (N/mm
2
)
shearing factor (in tools without shear = 1)
Maximum diameter for round
tools
Table 3-7
Maximum edge length for
square tools
Table 3-8
Maximum cutting
circumference for tools of
any shape or cluster
punching tools without
shears
Table 3-9