Siemens SINUMERIK 840D Operating Manual page 250

Creating a ShopMill program
7.17 Example, standard machining
4. Outside contour islands
To simply machine the entire surface outside the island, define a contour pocket around the
blank and then program the island. In this way, the entire surface area is machined and no
residual material is left behind.
Outside contour of the pocket
250
1. Press the "Contour milling", "Contour" and "New contour" softkeys.
The "New Contour" input window opens.
2. Enter the contour name (in this case: Part_4_pocket).
The contour calculated as NC code is written as internal subprogram
between a start and an end marker containing the entered name.
3. Press the "Accept" softkey.
The "Starting point" input window opens.
4. Enter the starting point of the contour.
X -10 abs
5. Press the "Accept" softkey.
6. Enter the following contour elements and acknowledge using the
"Accept" softkey.
6.1. X 190 abs
6.2. Y 190 abs
6.3. X -10 abs
6.4. Press the ">>" and "Close contour" softkeys, to close the contour.
7. Press the "Accept" softkey.
Y -10 abs
Operating Manual, 03/2010, 6FC5398-7CP20-1BA0
Milling