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Location: camillus (syracuse), ny
03-21-2013, 09:34 PM
(This post was last modified: 03-21-2013, 09:48 PM by the penguin.)
jack
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Location: Spencer MA USA
03-21-2013, 09:50 PM
(This post was last modified: 03-21-2013, 10:01 PM by PixMan.)
Light duty use with those only. I hate 'em because they don't nest the insert and rely upon one surface and the screw for insert security and stability.
Triangular insert have really started to fade in popularity because they can really only work for single direction turning, while a W or C can be used for turning and facing without reorienting the holder. The tips are notoriously weak too, as you may have found.
/rant
Anyhow, you can also use TPGT, TPMT or TPMW in 321 (.015" corner rad), 322 (.031"), 320.5 (.008"), as long as the counter sink matches the head of the screw within reason.
EDIT: Aw crap, I have to correct myself. Those holders appear to use a much shallower side clearance angle that the 11º of a TPxx. Go with the ones Jack linked to, as they appear to be a 5º or less clearance angle. Plus, there doesn't appear to be many TPxx in a 32x thickness. Most are a 32.5x (.093-.098 thick.)
Posts: 482
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Location: camillus (syracuse), ny
Ken,
I never said they were good, one of the first sets I ever bought, since then , thanks to you, I've found better choices.
jack
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Location: Arizona
Found the tool holder make/model and it mentiones for inserts:
...................................................................................
http://www.guardiancatalog.com/Made-in-U...641321.htm
Indexable Cutting Tools - 1/2 SHK AL 8 USA-INDEX TOOL HOLDER, Indexable Carbide Turning Tool System Shank Width: 1/2 Shank Height: 1/2 Insert Type: TCMM, TCMT, TPMT Cutting Direction: Left Hand
.................................................................................
What is the difference between all types of inserts. Googled all and now I know less than before. I use them for AL to SS all grades and sizes. Which is the best type for me? I have LH and RH tool holders that I use 90% of the time.
Kaoma, proud to be a member of MetalworkingFun Forum since Apr 2012.
Posts: 23
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Joined: Apr 2012
Location: Arizona
Found this link:
http://www.carbidedepot.com/formulas-ins...#clearance
Looks like I need TPMT 321 C6 insert TiN coated.
Kaoma, proud to be a member of MetalworkingFun Forum since Apr 2012.