Rotary Broaching

[suntravel]

Easy way to make internal profiles on a mill or lathe.

Animation how it works:



And some pics from my lathe hex 5mm in AW7075 and stainless steel.

Uwe

[richardb15]

I have a rotary broach tool I use for EN36 gears, putting 1/2" square in the centre. it works well but I find I have to use huge tailstock force to drive it in hard enough to create the peeling effect. Maybe the hex takes out less material, its a tool I think I should use more but the cost of the tools is quite high from the place in the UK I got the head from, so to be honest I still fall back to conventional broaching quite often for through holes.

[suntravel]

It is working with TORX also.

You can also use the broaching tool on the mill.

For square hole I use broaching with C-Axis and small steps, repeat four times 90 deg.

Uwe

[richardb15]

Where do you buy your tooling from for the rotary broach? My head unit is a Tangi-flow:
https://www.tangi-flow.com/

So I've always bough from them, but as mentioned never been overwhelmed with performance from it despite the high cost

[tblough]

My goto is Polygon Solutions: https://www.polygonsolutions.com/

[suntravel]

I get them, if cheap is ok from Ali, if I want quality, or custom sizes from Wittmann:

https://www.wittmann-werkzeuge.com/en

Uwe

[richardb15]

Thanks all, maybe I should revisit that toolholder with some different tip tooling, good excuse to make use of it again