13mm hex broach

[TT350]

I need a 13mm hex broach, I’ve looked every ware
All I can find is 10 and 12’s.
I know I can have one ground they get big$ for custom
broach’s, sorely a 13mm is common item.

[cb1]

i can quote you one if you like. send me a print with lengths and such.
cbaas@rmepvd.com

[peter@slater]

13mm is a standard for Rotary Broaching Tools (probably same day delivery). Do you have a Rotary Broach Holder, if not could you push a Rotary Broach into your part??
Check out the Slater Tools catalog:
http://www.slatertools.com/rotary8.htm

[TT350]

This type of broach can be used in a mill?

[peter@slater]

Rotary Boaching is an excellent option for broaching if you have a mill. Here's a little history: RB was first used in screw machines, using a spindle which rotates free in the tool holder. The spindle and the broach are offset at a 1 degree angle, so that it makes contact with the workpiece only 1 corner at a time. As the broach is turning and is fed into the workpiece, it creates sharp corners one at a time. (see the video)
Today: As it turns out, the principle works when the workpiece is turning (screw machines & lathe), OR when the toolholder is turning (mill).
It also works clockwise and counterclockwise directions. So all you need to get started with Rotary Broaching is a toolholder and a broach. There are dozens of styles of toolholders available for internal and external forms, and 1000's of broaches.

[TT350]

Wow!!!!!!!!!!!!

[peter@slater]

and Made in the U.S.A. too!

[timmydabull]

Peter,i heard the podcast from jay pierson and the interview about your rotary broaching,i have also been to your website.

i am very impressed with the tooling and i hope to be able to incorporate your tooling into some of our designs one day.

great product.

[Mcgyver]

won't apply if its commercial for thousands of parts, but otherwise they're not too hard to make

[peter@slater]

Timmy, thanks for listening to the podcast. I'm curious how you found it? I hadn't heard of CNC-today until they called us. I listened to it after the recording and was suprised how much we had talked about in 15 minutes. I fill in for the sales team doing customer support from time to time, so that's where I learned alot of the info from.

TT350, One nice thing about rotary broaching (I forgot to mention) is that you can use a rotary broach in a blind hole, unlike a conventional broach, which requires a thru hole. The trade-off is that you cannot rotary broach a deep hole using a standard tool holder, rotary broaching deep holes requires a machine attachment and sometimes still can't be done.

[handlewanker]

Hi tt350, a lot depends on how deep you want to go, what material and most important the volume required.

If you only want a few hundred, with a depth of say 3/4" in brass, for a hex key drive in a plug with a blind bore, then have a punch made from toolsteel and put the part in a "nest" in a press and just push the punch into the hole with the press.

I made this set-up with a mill and dividing head, to put the key drive hex cavities in some plugs for picnic cooler boxes.
Took me about 2 or 3 hours all up to make the tool and nest, and cost next to nix.

I've got a few spares left over if you want to see a photo of the end result, and the tool as well.
Ian.