Siemens SINUMERIK 802D sl Wartungshandbuch PDF herunterladen (Seite 82)

Manual machining

5.4 Manual machining using cycles (functions)

Manual Machine Plus Turning

82 Programming and Operating Manual, 06/2009, 6FC5398-6CP10-1BA0

Execute thread recut

The following requirements must be fulfilled before you can recut a thread:

● Appropriate values must already have been entered in the "Thread Cutting" screen form

at this point.

● The screen above is displayed.

● The spindle must be stationary (switched off) and must already have been synchronized,

in other words, it must have been turned through at least one full revolution since the

controller was last powered up. Otherwise, an error message appears when the thread

angle is accepted.

● Now use the handwheels to traverse the axes until the thread cutting tool can be

threaded into the existing thread.

● Carefully introduce the tool into the thread. The "Axis position" shown on the screen must

be between the values for "Thread initial p." and "Thread end point".

● Press the softkey "Accept angle". The current spindle angle is now converted into the

appropriate starting angle offset for thread cutting. The starting angle that is now

displayed corresponds to the angle that will subsequently be used as the starting angle

offset for machining a right-hand or left-hand thread.

● Using the handwheels, move the axes into a position from which the start of the thread

can be approached safely.

● Press the softkey "OK" and the following screen appears:

Figure 5-42 Execute thread recut

The rest of the thread cutting process is exactly the same as that described for "Manual

thread cutting".

The only difference is that thread cutting is not started with the marker pulse from the spindle

encoder but with the angle that was calculated in the previous screen for "thread repair"

(thread recutting) as the "start angle offset".

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Siemens SINUMERIK 802D sl Wartungshandbuch Seite 82