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used at the Siemens plant in Duisburg to the
Berlin site. "The technical challenge of thread
milling screw bores lies in the great depth
of the large threads which make large tool
protrusions necessary," explained Bender.
He explained that one common thread type
is, for example, the M100x6 thread with a
depth of 159 mm. Because of the large tool
protrusions required, thread whirling tools
are often used. Despite the large cavity
sizes, only one turn is machined at a time
and the resultant cutting forces are therefore
low. However, the disadvantage is the long
machining time due to the long cutting path.
"In this context, ISCAR's Millthread multiturn
thread-milling tool has the potential to save
us an enormous amount of time," continued
Bender. Even though the tool simultaneously
mills multiple thread turns, its special cutting
geometry and harmonized tooth numbers
result in a very soft cut and low radial
resultant cutting force.

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