Watch the online video describe the method for rotary broaching and instructions on how to do rotary broaching yourself.
The video is available at www.slatertools.com

or direct at:

http://www.slatertools.com/slaterweb/slaterweb_content.html

Looks very interesting. I cant understand what is happening inside the tool to enable it to do that.

In turning or screw machines, the holder is mounted stationary, while its internal live spindle (with the cutting broach tool) rotates with and is driven by the workpiece. While rotating with the work spindle, the broach tool's contact and pressure points change continually, producing a shearing action which makes broached forms easy to produce.

Sorry guys, the webmaster revised our direct link to the video.

http://www.slatertools.com/video.htm

Cool, now I understand how that works. The video is pretty dark to see much, but its adequate. Thanks. :)

PRESS RELEASE
Contact: Jeff Tryles, direct@slatertools.com
Slater Designs Broaching Holder for Swiss Type Automatics

CLINTON TOWNSHIP, MI, JANUARY 1, 2005: Slater Tools is announcing its new Swiss-type Rotary Broach Tool Holder in stock and immediately available for ordering. The 12mm shank broaching tool relies on the sturdy design of Slater Tool’s existing 8mm broach holder. This gives users of new smaller swiss-type automatics the robust tooling larger automatics have counted on for decades. The increasingly popular swiss-types machines are limited in operations, they will not be limited in shapes to manufacture. Rotary broaches form square, hex, double-hex, spline, serration and other shapes on all popular machining materials. Rotary broaching, also known as wobble broaching, is a popular money and time saving operation with automatic machines because it eliminates the need for secondary operations. The fully adjustable Rotary Broach Tool Holder is for use on any type of CNC or manual turning, milling, drilling or screw machine.