Siemens SINUMERIK 840D Operation/Programming Manual page 188

3
Programming with ShopMill
3.5 Contour milling
Contours for spigots
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All machining steps involved in the contour milling operation are
shown in the machining plan in square brackets.
Example: Removing stock from a contour pocket
Contours for spigots must be closed, i.e. the start point and end point
of the contour are identical. You can define multiple spigots, which
can also overlap. ShopMill interprets the first contour specified as a
blank contour and all others as spigots.
The machining of contour spigots is generally programmed as follows:
1. Enter the blank contour
i.e. the outer limits of the material. The tool moves at rapid traverse
outside this area. Material is then removed between the blank
contour and spigot contour.
2. Enter contour for the spigot
You enter the contour for the spigot after the blank contour.
3. Clear contour spigot (roughing)
The contour spigot is cleared.
4. Remove residual material (roughing)
As it mills the spigot, ShopMill automatically detects residual
material that has been left behind. A suitable tool will allow you to
remove this without having to machine the complete spigot again.
5. Finish contour spigot (edge/base finishing)
If you programmed a finishing allowance for roughing, the spigot
edge/base is machined again.
SINUMERIK 840D/840Di/810D Operation/Programming ShopMill (BAS) – 10.04 Edition
3
10.04
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