Program Header Setting, "Clamping - Siemens SINUMERIK 840D sl Operating Manual

● 3500 operating steps max. per clamping
● Max. 49 clampings
12.18.2

Program header setting, "Clamping"

During the generation of a multiple clamping program, data from the program header of a
source program are transferred to a settings step of the multiple clamping program after
every clamping change. The setting of the clamping in the program header is also part of this
data. The clamping in the program header designates the name of the rotary axis in which
the blank is clamped.
A distinction is made between the multiple clamping programs:
● Program type 1, in which the same program is assigned to several clampings.
● Program type 2, in which a different program is assigned to each clamping.
A distinction is made between the installations:
● Installation type A, in which all clampings of the multiple clamping are mounted on one
● Installation type B, in which the clampings are distributed over different rotary axes (rotary
Multiple clamping programs of program type 1 cannot be executed on installations of type B
and are therefore not permitted.
Reason:
The program header contains the axis name of one clamping. Since this axis name is
entered in each setting step at a clamping change, the assignment to the actual rotary axis
of the respective clamping is missing in the generated multiple clamping program.
Example:
The installation has two rotary tables C1 and C2. The same blank is clamped on both tables.
Both blanks are to be machined with the same program. The rotary table must be addressed
for the machining.
The original program designates clamping C1 in the program header. The resulting multiple
clamping program uses the axis name C1 for both rotary tables, because the other axis
name is not known to the program.
The other combinations of multiple clamping programs and installation types are permitted
and supported.
Milling
Operating Manual, 03/2013, 6FC5398-7CP40-3BA1
Note
You can substitute subprograms for the markers or repetitions which must not be
included in programs for multiple clampings.
table or on one rotary axis.
tables).
Managing programs
12.18 Multiple clamping
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