Page 100 - Carmex - Metric Catalog 2021

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Thread Turning Technical Section

Important Points about Carmex

Threading Inserts

1. In most thread forms
internal and external
threads have different 4. Profiles of Carmex
depth and radii, thus internal & external
tools are not threading inserts
interchangeable are precision ground
to ensure accurate
thread geometry
when used in their
2. The Insert relief corresponding
toolholders.
angle of a standard Using internal inserts
Carmex external with an external holder
toolholder is 10˚; for an will result in distortion of angle
internal toolholder it is 15˚. and insert geometry.
This 5º difference is
to provide additional
necessary radial clearance.

5. Insert and toolholder
3. Our built-in relief angles should always match.
ensure automatic insert An IN-RH insert must be
flank angle clearance. used with an IN-RH
toolholder.
No mismatch is allowed.

Flank Clearance Angle

A04-6