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Indexable Chamfer Cutter - too much choice

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Lee Jones 624/11/2020 20:04:58
245 forum posts
125 photos

Just searching one of my usual places for picking up indexable tooling.

Looking for an indexable chamfer cutter this time around.

Stumbled over Link removed see CofC seller and was blown away by the choice.

Despite the obvious diameter/angle differences, why would you choose one of these styles over the other?

I'm particularly interested in the rectangle (APMT) vs triangle (TCMT) variants.

Edited By JasonB on 24/11/2020 20:12:29

JasonB24/11/2020 20:15:19
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Single triangle will usually go down to a smaller size hole or radius

Square can often be used above and below the work without changing tool

2 or 3 insert allow faster feed rates for same given chip load over single insert but minimum radius goes up.

JasonB24/11/2020 20:18:22
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Hass explain it quite well in this video

Lee Jones 624/11/2020 20:18:50
245 forum posts
125 photos

That's what's confusing me the most, both S and T have the same min-radius.

old mart24/11/2020 20:36:25
2462 forum posts
169 photos

I've got one that is adjustable for angle.

Lee Jones 624/11/2020 20:38:00
245 forum posts
125 photos

Oooo, posh. How does that work?

JasonB24/11/2020 20:43:28
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Lee Jones 624/11/2020 20:59:02
245 forum posts
125 photos

A (moving) picture paints a thousand works. Thanks a bunch. yes

old mart24/11/2020 21:03:35
2462 forum posts
169 photos

I can't post a pic of the adjustable chamfer tool as it is locked up at the museum at the moment. It is a WNT and the single sided positive insert sits in a holder that pivots around the central hole in the insert. SAU also make the same type. Some use triangular inserts, and some square ones.

Michael Gilligan24/11/2020 21:33:59
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16990 forum posts
753 photos

An insert for an insert ...That’s neat.

MichaelG.

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