Page 234 - Carmex - Inch Catalog 2022

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Thread Whirling Tools

Thread Whirling is a fast and an accurate way to thread long, small diameter parts
in exotic materials such as titanium, stainless steel and inconel.
Cutting is the result of the whirling ring rotating eccentrically at high speed about the
slowly rotating workpiece. The advancement of the workpiece rotationally and the

advancement of the tool head longitudinally correspond to the thread pitch required.

Advantages

Thread Whirling offers several advantages over single point threading:
Enables production of small diameter long threads when used on Swiss type machines. The thread whirling
spindle works close to the guide bushing for increased support and rigidity.
Increased Productivity

Thread Whirling is performed in a single pass, resulting in a shorter machining time.
This eliminates multiple passes required for a single point threading.
Thread whirling allows working at high feed rates and consequently results in short cycle times.

Very high surface quality and accurate geometry
The use of 6 to 8 cutting edges, higher concentricity, special cutting edge geometry and ideal chip removal,
enable top quality surfaces to be produced without burrs.

Long tool life
Whirling inserts have a stronger cutting edge than single point tools, since cutter side clearance is achieved
by rotating the whirling spindle, not by relieving material under the cutting edge.
Faster Setup
Thread whirling eliminates special support devices and
expensive startup development costs.

Compensation of large helix angles
Large helix angles can be compensated by adjusting
the whirling unit.
Short Delivery Time

Up to 3 weeks.

Applications

Carmex supports and offers high quality Thread Whirling tools for a wide range of
applications, such as: Bone screws, Dental implants, Orthopedic screws, automotive
parts, semiconductor small parts, etc.

Carmex holds in stock thread whirling holders that are compatible with all
Swiss Type machines such as STAR, Citizen, Tornos, Hanwha, Tsugami, Nexturn, and
Whirling units as PCM, WTO, H&F, MADAULA, etc.

A10-2