How Does Rotary Broaching Work? by Polygon Solutions

How does rotary broaching work? This video demonstrates the principle of the rotary broaching process, also known as wobble broaching. With Rotary Broaching it is possible to broach forms such as Hexagon, Square, torx-type (aka hexalobular), Serration, Keyway, Double Keyway, Double Square, Double D, Double Hex, Involute, Spline, Spur Gear, J500, Numbers, Letters and Other Polygon Forms without the need for a secondary operation.

Polygon Solutions is leading the industry with award-winning innovative rotary broach tools that are manufactured in the USA.

Rotary Broaching can successfully be achieved in any CNC or manual Lathe, Mill or Turning Center.

[MyFirstYoutubeHandle]

The “wobble and small cuts” was the key, I understand it just from that. Great video!

[alejrandom]

You explained this better in the first 70 seconds than all the videos I've seen today. Thanks!

[nihilist]

My right ear learned a lot in this video.

[cakeman]

Fully-explained in a brief and clear video. THANK YOU.

[cheapshotninja]

Thank you sir. The videos I've seen look like magic. It's spinning then it's not then it a shape appears in the metal and it's spinning again.

The wobble and singular point of contact makes so much sense. Much appreciated.

[RapidRussian]

I came here after watching someone do this for a project and was blown away when i seen him make a square hole with 2 spinning ends.. he didnt explain how he did it either.. which was a little frustrating... but alas, you explained it perfectly.. thank you sir!

[PAOLOHAON]

Great Explanation!! Though it would have even greater with some "Zoomed" of the tools as you speak :)

[oppanheimer]

Very good explanation of how they work. Thank you.

[ChainsawFPV]

Excellent definition of broaching. Most people just say its magic and leave it at that. Lol

[r_gos]

First time I saw a rotary broach in action couldn't comprehend how 2 spinning ends were cutting a square hole. But 1° slope and slight wobble makes it clear that it's basically high speed chiselling

[shodanlieu]

Thank you. This really helps me understand how broaching works.

[boytucb]

Can you align the hole you’re broaching, or does the hole come randomly, with the corners pointing to which ever direction?

[InfiniteCraftsman]

“A lathe”🤣 so humble🤣. Thanks though for the explanation.

[Freeridert]

3:15
What is the difference between a 1 degree angle and a very slight 1 degree angle?

[Luzt.]

So it has 6 features in total: 3 mentioned at the beginning and 3 at the end.

[utahprepper]

Maybe pull the camera in a little closer so we can actually SEE what you are talking about.

[davidfarmer]

Do you offer involute spline rotary broaches?

[mattfilth]

Hi, do you have information about external rotary brouching, ?, I need to know the theory about this process. If you have a pdf book about this, please send it to my mail, I would be grateful. Thanks.