Old Bridgeport Round Ram Mill. Tramming question

Knick · Nov 21, 2020

Hey guys

Newbie here

I have purchased a old Bridgeport Round Ram mill and I am getting ready to tram the head.
The current set up on this Mill wont allow you to set the Nod, But look at the picture and tell me why cant I rotate the Ram 90 degrees?

Would this not give me the the ability to change the Nod? Or am I missing something?

Thank you

P.S. I rotated the pic before uploading it but it still flipped it.

bsg · Nov 21, 2020

Hello Knick, welcome to the forum!

Can’t help you much with your question, but you may want to post this question in the Bridgeport section of the forum, found here......

https://www.practicalmachinist.com/vb/bridgeport-and-hardinge-mills-and-lathes/

Kevin

upm2019 · Nov 21, 2020

The ram is rotated 90 degrees turn it and you should be fine . When I had one the only draw back was if the cutter grabbed it would tip the head up . We had a plug we used .It might be worth the effort to put a taper pin in after you tram then going forward you will easily find zero.
Pete

Knick · Nov 24, 2020

Kevin

I looked around for a place to post that question and completely overlooked that area. Thanks for pointing that out!

Knick · Nov 24, 2020

Kevin

I think I have my answer but thought I would move it but I don't see how? Can I move it?

Knick · Nov 24, 2020

Hi Pete

Thanks for the help. I was thinking about this and thought maybe I would check the Nod like it is first and see if its close and if not than turn it. Do you know how it came from the factory?

Nmbmxer · Nov 24, 2020

I see lots of pictures of them in both the swinging and nodding configurations. I don't own one, but the manual makes it seem like you just need slack the pinch bolts on the ram and use the adjuster to rotate it 90° then loosen the 4 bolts that hold the head to the knuckle and straighten the head back up.

http://manuals.chudov.com/Bridgeport/Round-Ram-Turret-Bridgeport-Mill-Manual.pdf

Hardplates · Nov 24, 2020

While I am far from an expert on the topic I can't see how it could have any value when configured to have the pivot axis perpendicular to the X Y plane. I would think it's there for nod and fancy angled holes type stuff.

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