Page 166 - Threading_Handbook

3.3 MULTI-MASTER
THREAD MILLING • MULTI-MASTER is a family of tools with shanks and interchangeable cutting heads for a

variety of machining applications for thread milling.

• The MULTI-MASTER design approach is based on a thread profile system,
centered by a short precise taper and face contact.
A MULTI-MASTER head has a cutting part and a back connection with external thread and
taper, which screws into a shank with the corresponding internal thread and a taper, until
final securing when the back face of the head cutting part makes contact with the shank
face.
• This principle of coupling ensures straight and rigid clamping of a wide range of
interchangeable heads. MULTI-MASTER tools meet the requirements of high accuracy
because the geometry is finished by precise grinding and the connection guarantees high
concentricity within a very close limit. In addition, the tools are simple to operate because
the heads are quickly replaced by easy rotation of an applied key. Moreover, they conform
to strict repeatability requirements and replacement of the heads does not require additional
adjustment.

• The basic concept of the MULTI-MASTER Family is that a shank can carry heads of
different shapes and accuracy, allowing dramatic increase of tool versatility and fewer needs
for special tools. Resharpening of cutting edges is no longer needed as a worn out cutting
head is simply replaced. The MULTI-MASTER Family provides a range of possible tools
by an unlimited combination of heads and shanks, which answers to any thread making
requirement and reduces procurement costs.

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