Tangential tool

[8ntsane]

Earl
that would be great, thanks.

Paul

 

[ddmunroe]

Hi all,
At the risk of sounding daft what is the purpose of a tangient tool holder and what are it's advantages.
(Is it a holder used for when sharpening HSS ?)
)dd

 

[Rick Leslie]

Hi all,
At the risk of sounding daft what is the purpose of a tangient tool holder and what are it's advantages.
(Is it a holder used for when sharpening HSS ?)
)dd

I think the main advantage of this type of tool/holder is the force applied against the cutter during use is directed downward into the heavy portion of the tool holder versus the force being applied along the slimmer horizontal portion of a conventional tool holder.

There's quite a few threads and info on these tools and homemade holder. Google should turn up some excellent results. And this is also on my 'must build when I get time' list as well. Along with the vertical shear bit.

Some search results:
http://mikesworkshop.weebly.com/tangential-tool-holder.html
http://www.modelenginemaker.com/index.php?topic=712.45
http://www.gadgetbuilder.com/VerticalShearBit.html
http://www.chaski.org/homemachinist/viewtopic.php?t=84313

 

[ddmunroe]

If the edge dulls just change the height to use a different part of the edge or re-hone when the whole edge is dull. Since the chip slides along in contact with the bit for a fair distance (due to the narrow angle) this promotes heat transfer and wear

Is this another spin off from the tangential tool ..... never have I heard the tool center height was no longer important !

Can read more via this link : http://www.gadgetbuilder.com/VerticalShearBit.html


Thank's for posting​ the article Rick (prior post)

 

[stevecmo]

ddmunroe,

The picture you posted is a shear bit, not a tangential tool. The shear bit can contact the workpiece anywhere along the angled surface. They work great for taking really small cuts that result in a great finish.

Steve

 

[Hawkeye]

Shear bits work really nicely, but aren't so good cutting to a shoulder. Tangentials can turn and face from the same position.

 

[Splat]

Here's another review of the Diamond tangential toolholder.

 

[ddmunroe]

Splat,
That video is probably the best in explaining and illustrating the tangential tool.
Threading too !!
Much appreciated
dd