Do you have a MT2/MT3 sleeve?
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DavidR8's shop shenanigans
- Thread starter DavidR8
- Start date
Do you have a MT2/MT3 sleeve?
Tapered rollers.
No unfortunately I don’t have one.
I have an MT3 center that I use in my SB Lathe bore adapter. Although it doens't need it the tip is carbide. You are welcome to borrow it if you want or I suspect KMS likely has one in stock.
This is a piece 99mm in diameter. RPM 280. 0.0085" per turn feed rate. And a 0.010 depth of cut. HSS tool bit with minimal radius. On the Gingery Lathe. As you can see the chuck and the work sticks way out. I don't get chatter but a lot of flex.
With a carbide tip and 0.010" depth and 0.0085" per turn the surface is rough but no chatter. And a few spring passes at 0.003" per pass it's a pretty nice surface given the quality of the lathe. WD40 to prevent metal gluing to the tip. So it doesn't make sense that you'd be getting chatter. Something odd is going on.
This is a piece 99mm in diameter. RPM 280. 0.0085" per turn feed rate. And a 0.010 depth of cut. HSS tool bit with minimal radius. On the Gingery Lathe. As you can see the chuck and the work sticks way out. I don't get chatter but a lot of flex.
With a carbide tip and 0.010" depth and 0.0085" per turn the surface is rough but no chatter. And a few spring passes at 0.003" per pass it's a pretty nice surface given the quality of the lathe. WD40 to prevent metal gluing to the tip. So it doesn't make sense that you'd be getting chatter. Something odd is going on.
I had another go at adjusting the bearings. And tightened the belts.
I did as John (@Dabbler) suggested, stuck a piece of round bar in the chuck, 12" long. I put as much pressure as I could manage and saw about .005"-.007" of deflection. The manual is a bit vague on how to measure this but it says between .002" and .004".
So I tapped the locknut around couple of degrees and kept checking the deflection till I got down to .003"
I chucked my 2" aluminum round back up and did a .020" cut under power feed. No chatter.
I tried a .050 cut, again with power feed. No chatter.
Feeling optimistic I dialed in a full .100" depth of cut. Power feed and no chatter.
Thanks for sticking with me!
Here's the result.
I did as John (@Dabbler) suggested, stuck a piece of round bar in the chuck, 12" long. I put as much pressure as I could manage and saw about .005"-.007" of deflection. The manual is a bit vague on how to measure this but it says between .002" and .004".
So I tapped the locknut around couple of degrees and kept checking the deflection till I got down to .003"
I chucked my 2" aluminum round back up and did a .020" cut under power feed. No chatter.
I tried a .050 cut, again with power feed. No chatter.
Feeling optimistic I dialed in a full .100" depth of cut. Power feed and no chatter.
Thanks for sticking with me!
Here's the result.
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0.1" DOC? Are you sure about that?
To be fair I actually don't know if the dials are direct or indirect reading. So it could have been a .050 DOC for a diameter reduction of .100"
Either way it's ten times deeper than I was able to cut earlier today.
Thanks John. I can sleep easy tonight. As you might imagine I was a tad annoyed and frustrated.
My South Bend had indirect dials which was a real treat for a ultra newbie.
I'm sure I'll get used to these.
Former Member
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There are vibration apps for phones that are very good, place the phone on the lathe and record the vibration size and direction.
In regards to bearing temperatures, I had to tighten up the preload of my Clarkson T&C grinder spindle bearings. After quite a bit of on-line research at SKF, Timken, and Machinery Lubrication magazine, I was able to set it.
See my post, Post in thread 'Clarkson Mk2 Tool and Cutter Grinder' https://canadianhobbymetalworkers.com/threads/clarkson-mk2-tool-and-cutter-grinder.8833/post-130846
See my post, Post in thread 'Clarkson Mk2 Tool and Cutter Grinder' https://canadianhobbymetalworkers.com/threads/clarkson-mk2-tool-and-cutter-grinder.8833/post-130846
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Boy, quite the Roller Coaster Ride for all of us! You especially, but some of us have gone from sympathy and fear to jealousy in just a few hours.
I hate that diameter / radius readout crap too. I can handle the radius to diameter conversion just fine without even thinking, but the other way around just seems un-natural and wrong! I confess it has bitten me a few times too.
You start by putting the flags for the corners of the building on my property. I'll even help you...
140mower
Don
....... it's not where, it's when, like yesterday, before someone changes the rules on you.
So, when you get this grand new shop and join the ranks of the hoyty toyty elites, try not to forget your old friends here on the forum....
Now to be honest it’s my wife who’s dictating the size........ it's not where, it's when, like yesterday, before someone changes the rules on you.
So, when you get this grand new shop and join the ranks of the hoyty toyty elites, try not to forget your old friends here on the forum....
She wants me to have the shop of my dreams. And the extra floor space sure will make for a nice suite
Is she vying for sainthood!! Don't discouage her.