Predrilling Contour Pocket (Cycle64) - Siemens SINUMERIK 840D sl Operating Manual

Name convention
For multi-channel systems, cycles attach a "_C" and a two-digit number of the specific channel
to the names of the programs to be generated, e.g. for channel 1 "_C01". This is the reason
that the name of the main program must not end with "_C" and a two-digit number. This is
monitored by the cycles.
For single-channel systems, cycles do not extend the name of the programs to be generated.
Note
G code programs
For G code programs, the programs to be generated, which do not include any path data, are
saved in the directory in which the main program is located. In this case, it must be ensured
that programs, which already exist in the directory and which have the same name as the
programs to be generated, are overwritten.
10.3.9

Predrilling contour pocket (CYCLE64)

Function
In addition to predrilling, the cycle can be used for centering. The centering or predrilling
program generated by the cycle is called for this purpose.
The number and positions of the required predrilled holes depends on the specific conditions,
e.g. type of contour, tool, plane infeed, finishing allowances.
If you mill several pockets and want to avoid unnecessary tool changes, predrill all the pockets
first and then remove the stock. In this case, for centering/predrilling, you also have to enter
the parameters that appear when you press the "All parameters" softkey. These parameters
must correspond to the parameters from the previous stock removal step.
Programming
When programming, proceed as follows:
1. Contour pocket 1
2. Centering
3. Contour pocket 2
4. Centering
5. Contour pocket 1
6. Predrilling
7. Contour pocket 2
8. Predrilling
9. Contour pocket 1
Milling
Operating Manual, 05/2017, A5E40868956
Programming technological functions (cycles)
10.3 Contour milling
445