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What are laydown threading inserts?
- Thread starter M Code
- Start date
- Replies 14
- Views 2,827
Illinoyance
Stainless
- Joined
- Aug 24, 2015
DouglasJRizzo
Titanium
- Joined
- Jun 7, 2011
- Location
- Ramsey, NJ.
It machines the entire thread form, not just the root, like a partial profile insert would.
Houndogforever
Hot Rolled
- Joined
- Oct 20, 2015
- Location
- Boring
You can get both topping inserts or partial profile inserts in laydown or in top notch.
DouglasJRizzo
Titanium
- Joined
- Jun 7, 2011
- Location
- Ramsey, NJ.
Cool. I was unaware of that!
sfriedberg
Diamond
- Joined
- Oct 14, 2010
- Location
- Oregon, USA
Triangular threading inserts, with one cutting position per corner.
Because the triangle is oriented in a horizontal plane, as if it were lying down on a table top. There are also triangular threading inserts oriented in a vertical plane, and these are often called "standup".
Yes, you do. You cannot use holders for originary triangular inserts, because they will not hold the cutting corner of the insert at the correct compound angle.
CarbideBob
Diamond
- Joined
- Jan 14, 2007
- Location
- Flushing/Flint, Michigan
Or even the old standup triangle.
So which better for cost, performance and strength?
And who started this tool? Carmex only came about in 1988.
Why did it become so popular so fast? What is so different about it from a standup triangle?
Bob
EmGo
Diamond
- Joined
- Apr 14, 2018
Don't know, but I was using Sandvik laydowns in the late seventies ...
Because they work ?
Standup triangles used to put pressure on the cutting edge that wasn't being used in the holder. When you lost one corner you frequently lost a corner in the holder as well. The laydown style holds the insert better.
Topnotch probably works well also but you only get two corners per insert instead of three.
Standup triangles are kind of sucky.
Ox
Diamond
- Joined
- Aug 27, 2002
- Location
- Northwest Ohio
I git a feeling that we would like to hear the answers to your [not] questions...
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Think Snow Eh!
Ox
On the chance that you're serious about this, the laydown is much better than the standard style.
Especially the full profile inserts. Cost is more obviously but the quality of the cut thread is worth it.
"The Vardex indexable laydown thread turning insert technology was developed over 50 years ago"
https://www.vargus.com/thread-turning
Gobo
Titanium
- Joined
- Jun 4, 2013
- Location
- Oregon, USA
Agree 100% . I have never tried to use them on a manual machine, but they totally kick ass in a production environment.
EmGo
Diamond
- Joined
- Apr 14, 2018
The other unusual thing about them (at least the sandvik ones) is since they are flat across the top, you can plunge straight in rather than at a 30* angle. Tool salesman recommended that to me, ah said, "You'se da boss, learned all these hotsy-totsy new tool tricks from the factory" and tried it ... worked good. Strange chip but nice threads. More even wear on the insert, more parts per corner. At $10 apiece that was a good thing.
EPAIII
Diamond
- Joined
- Nov 23, 2003
- Location
- Beaumont, TX, USA
EPAIII
Diamond
- Joined
- Nov 23, 2003
- Location
- Beaumont, TX, USA
From my research, $10 each sounds dead cheap. Are the $10 ones any good? No immediate need, just asking.
GENERALDISARRAY
Hot Rolled
- Joined
- Jan 3, 2019
I think he is referring back to when he was using them first. . . in the seventies.
