Remedying Blown out insert pocket

[CarbideBob]

Why would the hardness of the holder (or lack thereof) cause it to wear out faster? It seems the steel is just backing the insert and doesn't see any wear itself.

Given enough time the insert will brinell itself into the body if the steel dead soft.

Maybe I’ll give this a try. If it’s low or high guess I can drop to insert and go back to square one. Screw hole 5mm for mounting the insert is smashed flat. No clue where screw went. Looks like it got compressed .25 or so from original height not so much bent backwards. Very odd. Basically like someone took a sledge and beat the hell out of it

Normally you drill out where the screw was and plug it before welding up the walls and floor. If you use a rod that goes on in high hardness you want this area to be soft so that you can tap it.
The screw hole is not central to the insert. It is offset .003/.004 towards each locating wall.
I'd be surprised it the body was harder than low to mid 40s. Some are nitrited or plated for chip wear so they have a "skin".

All you need is a B-port, tig welder, dividing head, a nice arbor, a handful of small carbide endmills and some way to check what you are doing.
Or a call to someone who does this. Done right there is no reason such a repair will not work just like new.
Miss an angle by a bit or get off by .003 and not so good.

I've rebuilt cutter bodies where it is hard to tell what shape insert used to go in there. Done I have no idea how many hundreds (thousands?) of pockets and taught many others how to do it.
In case you are thinking about asking ....No, I do not want this job. I hate doing holder repairs. There are people who like it.
Now I only do them to get a customer out of trouble quickly. It is not great paying work and you have to do it day in and out to be good at it. As I said .. art.
Production numbers are one hour per pocket for the guy on the floor doing the work.

Google and make some phone calls.
If you have a good sized tool house you work with they may have some sources if they are willing to share information.

 

[4GSR]

Back in the day, used to be company called "Futurmill" sadly gobbled up by Carboloy and GE. They made face mills that the insert was held in place with a wedge looking piece, old school I know, that when It blew an insert or inserts, it would destroy the wedge and most of the time not damage the cutter body. Dug a many of them out of the face mill bodies to salvage as well as drill out those 10-32 screws and put in Heli-Coils in some. Dad charged by the hour on them, wouldn't even quote a price either. The face mills he dealt with were 8-10" diameter with 16-24 inserts on a 45 degree lead angle.

 

[Turbowerks]

Appears to be a pocket containing a partially melted ball bearing and charcoal looking stuff. Customer supplied Material came from speedy metals

I think i got the other piece of that … but mine was a 8 inch round i just used up a saw blade in my wreck. Spun the bar and tried cutting from other side and it hit the hard spot again. Moved over 3/4 inch and went right though. 8620 also


When I find it I don’t need it
When I need it I can’t find it!

 

[crickets]

Damage porn! We want pictures! Abscess in plate, too.

Totally agree!

 

[eKretz]

Back in the day, used to be company called "Futurmill" sadly gobbled up by Carboloy and GE. They made face mills that the insert was held in place with a wedge looking piece, old school I know, that when It blew an insert or inserts, it would destroy the wedge and most of the time not damage the cutter body. Dug a many of them out of the face mill bodies to salvage as well as drill out those 10-32 screws and put in Heli-Coils in some. Dad charged by the hour on them, wouldn't even quote a price either. The face mills he dealt with were 8-10" diameter with 16-24 inserts on a 45 degree lead angle.

Pretty sure we had the Carboloy versions of those where I served my apprenticeship. The inserts sat in little cartridges that bolted into the main cutter body. If there was a bad crash you could just unbolt the cartridges and put new ones in. We had them from 5" up to 12" diameter and they ran SEKN inserts as I recall. The big ones could really move some metal on a 7" spindle HBM.