Thread: Starting a Stent tool grinder.

Yes Bob that was my only concern the thickness of the tee slot. I will make longer tee nuts thanks
The shaper and the mill are working really well I am very happy Next I have to make or buy a rack for the table traverse that should be fun

Originally Posted by welder

Yes Bob that was my only concern the thickness of the tee slot. I will make longer tee nuts thanks
The shaper and the mill are working really well I am very happy Next I have to make or buy a rack for the table traverse that should be fun

Hercus sell racks. http://www.hercus.com.au/gear-racks/ I bought one a few years back to suit the pinion on a mill table feed they offered for the little No.O mill. From memory it wasn't too stiffly priced.

If you go the DIY route speak with Michael G. THE gear aficionado.

BT

Nice to to see the CVA in action.

I can show you a scary video on just how badly climb milling can go, i think the bigger the machine the worse it can be. I always get a better finish climbing though, and its better on the cutters.

Simon,
I get that diagonal pattern from my shaper too, i put it down to gear noise, if you change the stroke length the angle of the lines change, I have not counted it but i reckon each individual mark is caused by each tooth on the bull gear. Now if they were helical gears.....

Originally Posted by Anorak Bob

Hercus sell racks. http://www.hercus.com.au/gear-racks/ I bought one a few years back to suit the pinion on a mill table feed they offered for the little No.O mill. From memory it wasn't too stiffly priced.

If you go the DIY route speak with Michael G. THE gear aficionado.

BT

Cup cake world on ebay also sell racks, RC has bought some in the past, for his fraenken mill project

I think all off.cupcakes racks are to large I would need to mill it down and I don't like my chances spend a day surface grinding.

Originally Posted by welder

I think all off.cupcakes racks are to large I would need to mill it down and I don't like my chances spend a day surface grinding.

Andre,

I've bought gears from HPC Gears in Chesterfield UK. They sell racks and pinions - http://www.hpcgears.com/n/products/r...ks_pinions.php

Could be worth a look.

Bob.

Originally Posted by Ueee

Nice to to see the CVA in action.

I can show you a scary video on just how badly climb milling can go, i think the bigger the machine the worse it can be. I always get a better finish climbing though, and its better on the cutters.

Simon,
I get that diagonal pattern from my shaper too, i put it down to gear noise, if you change the stroke length the angle of the lines change, I have not counted it but i reckon each individual mark is caused by each tooth on the bull gear. Now if they were helical gears.....

That's interesting Ueee. I guess It's really all it can be is the Bull gear. Helical bear gear, that would be almost at good as a hydraulic shaper!

WRT climb milling, after much reading when I first bought my mill I was lead to believe it should never be tempted on a small or cheap mill. Only to be used on a good quality mill with nice/precision fitting surfaces. My 45 size mill certainly does not fit that category but I do manage climb milling successfully. In fact I do it after the final pass as a spring cut at slightly higher RPM and slower feed. Gets beautiful results everytime.

Wouldn't attempt it under any other circumstances besides a spring cut though. Not with my machine.

Simon

The thing that kills with climb milling is backlash - the cutter will tend to pull into the work and if there is some play in the screws etc, the cutter will take a bigger bite than it should and produces trouble instead of a nicely machined surface.
As a spring cut with relatively unworn screws & nuts (and tight gibs) you should get away with it but you need to be careful. That's the main reason why I regard milling in a lathe as a potentially hazardous operation especially if the lathe is one that has seen some work - you do need to think about what it is you are doing.

Michael

Originally Posted by Anorak Bob

Hercus sell racks. http://www.hercus.com.au/gear-racks/ I bought one a few years back to suit the pinion on a mill table feed they offered for the little No.O mill. From memory it wasn't too stiffly priced.


BT

I boughttwo 16dp gears off Hercus for the 10EE trying to stay Australian made... They sent me one that looked like it was made in the 1930's and it was horrendously priced... I could have bought them from Boston gear in the US and they still would have been cheaper with postage..

Originally Posted by Ueee

Cup cake world on ebay also sell racks, RC has bought some in the past, for his fraenken mill project

Yes and they really are hardened... I would not machine them with HSS tools..

Andre, tried to PM but your inbox is full.
Did you want that rack I made up? PM me an address if you do.

Michael

Well I received Michaels rack on Friday afternoon and today I gave it a lick on the grinder

Just remember that the rack is too tall as it is Andre - you will need to put it on your mill and take some off the back. It's a bad habit I have - My nieces and nephews complain that when they ask for help with homework I never help them "properly" as I always just give them enough to get started and don't finish the problem for them.

Incidentally, that open terminal box on your SG should be covered. You run the risk of metallic dust settling in there and once there is enough to bridge the terminals...

Michael

We were using the vfd off the grinder to test the mill and I didn't realise that the cover was missing till I was already on the second side but the cover will definitely but put back on before I use the grinder again.