Page 19 - THREADING CATALOG

INTRODUCTION
INTRODUCTION

Profiles for Thread Production

Insert profiles for thread production can be divided into Multi-Tooth
three main types: full profile, partial profile, and multi-tooth.
Full Profile

finish
semi-finish
roughing
Inserts belonging to this group are designed to produce a
full profile of the requested thread. Each full profile thread
tool is suitable for a specific thread profile and pitch only.
Full profile tools are recommended for mass production.

Advantages of Full Profile
• Finish the thread in one operation.
• Bigger corner radius means better tool life. Multi-tooth inserts produce a full profile of the
• Ensures correct depth of thread. requested thread. These inserts, usually have two or
• No deburring. three cutting teeth. The thread profile is produced
Disadvantages of Full Profile by the last tooth and the previous teeth (or tooth)
• Cutting edge is suitable for the relevant are used for rough and semi-finish operations,
thereby facilitating the work of the last tooth. These
thread profile and pitch only. inserts are recommended for mass production.
• Requires a wider variety of items in the workshop.
Partial Profile Advantages of Multi-Tooth
• Finish the thread in one operation.
• Reduces the number of passes for high productivity –
multi-tooth tools are similar to full profile tools but have
more than one cutting point (two-pointed tools give
double productivity, three-pointed tools give triple, etc.).
• Ensures longer tool life.
• Ensures correct depth of thread.
• No deburring.
Disadvantages of Multi-Tooth
• Can not work next to shoulder and
Inserts belonging to this group do not produce the requires wide thread relief.
outer diameter (major diameter) of external threads or • High cutting forces.
the inner diameter (minor diameter) of internal threads, • Requires a larger variety of items in the workshop.
which means that one or more additional operations
are needed to complete the thread diameter. These The ISCAR catalog of thread products
Inserts are not recommended for mass production. contains all types of threading solutions.
Advantages of Partial Profile
• Small corner radius, suitable for many pitch sizes.
• Reduces stock of many different full profiled inserts.
Disadvantages of Partial Profile
• Small corner radius will result in shorter tool life.
• Requires additional operation/s to the complete
the outer (major) or inner (minor) diameter,
depending on the thread gender.

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