Form tool grinding

I am looking for someone to grind em some form tools to put chamfers on the end of a tube.

I am interested in having these tools made from HSS-Cobalt but will settle with HSS or carbide. The material being cut is 300 serries SS 316/304

Exampple:
http://www.profinex.pl/assets/pliki/produkt/tools/880102.jpg

Shared album - Robert Sheets - Google Photos

I could also maybee make an indexible tool holder, if someone has an idea for that.

Why not just use one of these?

New Invention - UNIBURR Tool Bit - A deburring tool bit that quickly repairs damaged bolts - YouTube

AB Tools could make them out of carbide. Send an RFQ to [email protected] and they will get right back to you tomorrow. 5-7 business day turn around.

Alfred

vettedude said:

I am looking for someone to grind em some form tools to put chamfers on the end of a tube.
..................
I could also maybee make an indexible tool holder, if someone has an idea for that.

Click to expand...

http://www.ktoolinc.com/k-tool_doc_006.htm

I am no longer doing specials but as shown is a simple tool for a TC or CNC grinder. Looks like you have run the tool so likely happy with it.
I would recommend that the drive is not very secure and perhaps a larger diameter and/or perhaps a hex on the drive end. Making it two flute aides manufacturing but making a three it flute would self center much better. For manufacturing the three flute come in with a boring form cutter (lathe) and turn inside. Simple hand ground tool bit is OK for this or cut angle with lathe compound feed at angle. Mill the three flutes and chip exit gullet (perhaps with a larger diameter cutter. Harden and sharpen. You might consider adjusting your top rake angle for different materials.

Seems we had a three flute much like that (with having a stub taper shank) but I cant offhand remember who made them or perhaps they were a special we designed.

Fancy (for the three flute) would be changing the axial top flute attitude (angle) to be cutting at the same place on the select size part but shearing at slightly different angle. Two of the flutes pulling the chip inward, and one flute square to the angle.. Yes there would be a very slight crown nobody would notice and would be within most print specs. and yes this for a one size tube only.

A number of companies make special spade drill inserts that are reasonable cost.

jontheturboguy said:

Why not just use one of these?

New Invention - UNIBURR Tool Bit - A deburring tool bit that quickly repairs damaged bolts - YouTube

Click to expand...

No specification on the angle with that, we have to hold tight tolerance on the angle.

The tool is guided by a fixture to cut the cone on the tube, so centering is not really a problem.

Tube goes in front, and the crank is used to turn it, we replaced the crank with a manual mill. I am goign to make some special fixtures to make the process easier in the mill.

http://www.autoclave.com/products/t...ading_tool/images/tio_man_con_thread_tool.jpg

digger doug said:

http://www.ktoolinc.com/k-tool_doc_006.htm

Click to expand...

This is what would be ideal, so i can just buy inserts.

Think the Uniburr a very nice tool and good invention... I like the three sides shank..

but wonder about re sharpening.
Throwing away a number each day could be costly. A a re-sharpenable tool might cost a little more(or less) and get 20 time use with skimming .020 at each resharpening..

Might send your sketch to this outfit. Tell them Buck said 3 flute might be better.
See if they remember me as it has been a time or two since I last had them make special tools for me.

http://www.manta.com/c/mmch7ss/special-drill-reamer-corp

vettedude said:

we have to hold tight tolerance on the angle.

Click to expand...

vettedude said:

http://www.autoclave.com/products/t...ading_tool/images/tio_man_con_thread_tool.jpg

Click to expand...

If that's what the tool is for....YES ! you need tight control on the angle.

If the insert tool would work, the angle would only need "fussed over" once, when making it.

If you get HSS cutters made, say qty (10) at a time, one or 2 might be slightly off on that
cone angle.

A constant re-accuring Q.C. headache.