Programming technology functions (cycles)
8.4 Milling
Turning
Operating Manual, 03/2013, 6FC5398-8CP40-3BA1
397
8.4.5 Circular spigot (CYCLE77)
Function
You can mill various circular spigots with the "Circular spigot" function.
In addition to the required circular spigot, you must also define a blank spigot, i.e. the outer
limits of the material. The tool moves at rapid traverse outside this area. The blank spigot
must not overlap adjacent blank spigots and is automatically placed on the finished spigot in
a centered position.
The circular spigot is machined using only one infeed. If you want to machine the spigot
using multiple infeeds, you must program the "Circular spigot" function several times with a
reducing finishing allowance.
Clamping the spindle
For ShopTurn, the "Clamp spindle" function can be set up by the machine manufacturer.
Machine manufacturer
Please refer to the machine manufacturer's specifications.
Approach/retraction
1. The tool approaches the starting point at rapid traverse at the height of the retraction
plane and is fed in to the safety clearance. The starting point is always on the positive X
axis.
2. The tool approaches the spigot contour sideways in a semicircle at machining feedrate.
The tool first executes infeed at machining depth and then moves in the plane. The
circular spigot is machined depending on the programmed machining direction (up-
cut/down-cut) in a clockwise or counterclockwise direction.
3. When the circular spigot has been traversed once, the tool retracts from the contour in a
semicircle and then infeed to the next machining depth is performed.
4. The circular spigot is approached again in a semicircle and traversed once. This process
is repeated until the programmed spigot depth is reached.
5. The tool moves back to the safety clearance at rapid traverse.
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