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

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.
10.5.9

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.
To prevent the drill slipping during drilling, you can center it first.
Before you predrill the pocket, you must enter the pocket contour. If you want to center before
predrilling, you have to program the two machining steps in separate blocks.
The number and positions of the necessary predrilled holes depend on the specific
circumstances (such as shape of contour, tool, plane infeed, finishing allowance) and are
calculated by the cycle.
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. 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
10.Stock removal
11.Contour pocket 2
12.Stock removal
Turning
Operating Manual, 05/2017, A5E40868721
Programming technology functions (cycles)
10.5 Contour milling
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