By continuing to use this site, you agree to our use of cookies. Find out more
Forum sponsored by:
Forum sponsored by Allendale Jan 24th

Material for tapered mandrel?

All Topics | Latest Posts

Search for:  in Thread Title in  
Philip Rowe23/01/2021 12:16:53
198 forum posts
20 photos

Gentlemen,

I want to modify some aluminium bushes, top hat in section, 10mm bore and around 25mm long. The only way that I can now hold them to turn the new diameters is with a tapered mandrel as there is insufficient material to grip in a chuck or collet. My question is what is the most suitable material to use for the mandrel that will provide sufficient grip and not jam in the bush when it comes to removal? I only need to take around 0.4mm off the bushes so will only be a very light cut.

I've been a model engineer for over 50 years and have only ever used a tapered mandrel once before to grip loco cylinders for facing the ends and I cannot remember what I used!

Thanks in advance for any pointers.

Phil

Andrew Johnston23/01/2021 12:27:27
avatar
5929 forum posts
666 photos

I'd use a split bush, like this one used to machine the OD and face of the spigot and inner face of the flange:

split_bush.jpg

The central hole is 9/16" for scale.

Andrew

Philip Rowe23/01/2021 13:47:56
198 forum posts
20 photos

Thanks Andrew, why l didn't think of that I don't know. Obvious really and no potential problems involved with removing the bushes from a tapered mandrel.

Phil

All Topics | Latest Posts

Please login to post a reply.

Magazine Locator

Want the latest issue of Model Engineer or Model Engineers' Workshop? Use our magazine locator links to find your nearest stockist!

Find Model Engineer & Model Engineers' Workshop

Latest Forum Posts
Support Our Partners
JD Metals
emcomachinetools
ChesterUK
Eccentric July 5 2018
cowells
Warco
Eccentric Engineering
Subscription Offer

Latest "For Sale" Ads
Latest "Wanted" Ads
Get In Touch!

Do you want to contact the Model Engineer and Model Engineers' Workshop team?

You can contact us by phone, mail or email about the magazines including becoming a contributor, submitting reader's letters or making queries about articles. You can also get in touch about this website, advertising or other general issues.

Click THIS LINK for full contact details.

For subscription issues please see THIS LINK.

Digital Back Issues

Social Media online

'Like' us on Facebook
Follow us on Facebook

Follow us on Twitter
 Twitter Logo

Pin us on Pinterest