Tailstock Turret Plan from MEW 253 - FOR DIGITAL SUBSCRIBERS

Because Digital-Only subscribers may have difficulty accessing and viewing such a large plan, we have made it available as a PDF through the subscriber-only article linked here.

www.model-engineer.co.uk/news/article/free-plan-for-subscribers-to-accompany-mew-253

Please note you must have a valid subscriber number entered in your profile to view the article and download the plan.

Purchasers & subscribers of papers magazines will get the full size paper version.

Paper subscribers may also download the electronic version from the above link.

Please respect our copyright and do not circulate the plan to others.

Neil

Downloaded the PDF nice design unfortunately not much good for my lathe as no hole through the tailstock for a draw-bar. Would it work just relying on friction to keep it in place? Any other cunning retention plan?

John

Neil,

First page reads Issue 2653 and not 253.

Thank you for the plans.

Isn't WiFi 'bus technology wonderful ...

I'm on the 'bus going home from Manchester, and have just downloaded the plan in about fifteen seconds, and saved it to GoodReader on the iPad.

Thanks, Neil

MichaelG.

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638 Loctite

MichaelG.

Michael, Ah yes but a trifle permanent if you need to use the tailstock for something else

I already have a couple of these but commercial units and they just stay in by the grip of the Morse taper.

I can't fit a drawbar either so I cannot see any problem with this design at all.

End of the day bearing in mind we have the drawings only, you drill and ream the holes in the turret from the headstock so you guarantee alignment.

If you think about it, the loads are no different than on tooling held direct in the tailstock. My lathe hasn't got a drawbar hole either.

Neil

<edit> Actually the Adept has got a drawbar hole, which I suppose underlines its superiority

Or perhaps it's where you thread the anchor rope.

Edited By Neil Wyatt on 15/03/2017 17:55:13

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LOL.

Thats alright then, might give it a go once I have read the article.

John

That has worked out quite well as a PDF, better than having "fold" lines where you don't want them has it been done on digital. Even though A2 it is easy enough to zoom and scroll to the part you want and print "actual view" and get it on bits of A4. Also does not get pixilated when you zoom in like it would as a mag page.

J

PS. Now you just need to work out a way to cut and past that 252 red triangle

Just noticed that the (printed) drawing shows an M12 thread for the MT2 arbor and angle piece that it attaches to, whereas the article text quotes M10 for both.

Not near a measuring stick at the moment so haven't attempted to scale from the drawing.

I cannot see any problem with this design at all

There are a couple of points that don't seem great to me :

The index pin is parallel - this will have some play when new & will wear looser. Commercial designs use a tapered pin to take up wear ?

The angled block is located with countersunk screws only - better to have made the angled block with a bigger footprint & use pins for location, or to have fitted the block into a closely machined recess in the back of the body ? Unless using fitted bolts to give a location and fastening in one, isn't it usual to use fasteners to hold things together and pins, tenons, spigots etc, to give a positive location ?

Nigel B

Quoted out of context, John was refering to retaining the tool by the MT alone not the whole design.

I got 4 copies of the plans with my subscription.

As no more than an amateur, whose lathe is no more than modelling eqpt, with no intention of professional usage, thus my time is free. Purchasing several tail stock chucks and inserting tooling for sequential use seems a simpler solution. No doubt the great and the good will inform this sinner otherwise. But it works for me

It won't suit everyone, the more operations and the more parts you need to do, the more useful it becomes.

Obviously when you get to a certain point you might then think of moving up to a capstan lathe, and beyond that an automatic or CNC.

If you don't do a lot of repetitive work and have plenty of time, it's not for you.

Neil

Will you be returning them or shall I send you and invoice?

Neil

Neil, I`m struggling to make the detent assembly from the detail parts shown on the drawing. Can you also tell me what the purpose of the "finger" and the "flag" please.

Regards, Puzzled Essex