Myford ML7 Tool Clamp Stud

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Myford ML7 Tool Clamp Stud

This topic has 13 replies, 7 voices, and was last updated 2 June 2010 at 12:01 by Ian S C.

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18 March 2010 at 00:36 #49875
Gone Away
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@goneaway
On the ML7 top-slide there are three grub-screws that go through the top-slide and bear against the flange on the Tool Clamp Stud.

What is the purpose of this arrangement? Is it some form of adjustment and if so, how do you adjust it?

Or is it simply to take the play out of the Tool Clamp Stud while still allowing a component that is easy to remove/replace?
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18 March 2010 at 00:36 #11653
Gone Away
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@goneaway
18 March 2010 at 08:28 #49877
Bryan Rozier
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@bryanrozier80712
Hi Sid,

I wondered that too when I stripped down my cross slide.

I think the three holes can be used to secure the ratchet wheel when using Myfords indexing tool post.

The grub screws just keep crud out of the threads. I have a feeling you can use them to push the Stud out of the Top Slide casting too.

Cheers

Bryan
18 March 2010 at 13:26 #49898
Gone Away
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@goneaway
Hi Bryan,

The stud wobbles a little on mine.

When I bought it, the guy who sold it to me brought it from his basement to mine. It wasn’t a gentle operation and the top-slide area took a hit. Bent the lead-screws etc and the toolpost stud was also bent and has this wobble without the grub screws. Not that it really matters (it will tighten when a tool or toolholder is installed) but I didn’t know if it was normal or due to the damage.
18 March 2010 at 21:49 #49912
Flying Fifer
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@flyingfifer
Sid,

The 3 holes are for securing the ratchet for the 4 way tool holder. i`ve got another top slide as well but this one has 4 holes in it one of which is on a slightly larger PCD than the other three. Haven`t a clue what its for. I`ve even got another myford one which has NO holes in it at all & someone has trimmed a bolthead down & forced that into the stud counterbore! Funny what some folk do to their lathes. I`m not worried about this though as I intend to make it into part of a vertical slide.

Regards
18 March 2010 at 23:51 #49915
Gone Away
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@goneaway
Posted by Flying Fifer on 18/03/2010 21:49:28:

… someone has trimmed a bolthead down & forced that into the stud counterbore! Funny what some folk do to their lathes.

Well, I dunno. I’ve considered doing that myself. The stud was bent on mine. I’ve straightened it somewhat but it’s still not great. At the price Myford wants plus the shipping (I’m in Canada) I thought of making another. When you look at it though, all I’d really be making is a bolt with a round head.

A decent 7/16″ x 3″ bolt should fit nicely and would look identical from the outside … well, from here I’d have to use a 7/16 UNF instead of BSF but I doubt anyone would notice. The only thing is, the head is a bit small and I couldn’t get a fully round flange out of it – I’d have to just turn the corners off the hex.

That’s one reason I wanted to know what the grub-screws were for because, if they had to work on the flange the bolt idea might have been a problem. Since the grub-screws have nothing to do with it though, I’m back to reconsidering the whole idea. I think I’ll just get a bolt and try it – see if there’s enough bearing area left after turning the head.
19 March 2010 at 20:51 #49939
Flying Fifer
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@flyingfifer
Sid,

I`ve just gone & checked the topslide again ie had a closer look at it. It`s not a bolt its a nut with a piece of studding rivetted into it & then ground flush on the underside. I managed to get the tips of a venier across the flats on the nut & they measure 0.817 inches across. He has also rounded off the nut corners. What he hasn`t done is ensure that the stud is truly vertical to the top surface of the slide. The stud protrudes 2.5 inches above the flat but is 0.125 inches out of plumb (vertically). I suppose the old Myford top clamp would have worked but the 4 way toolpost would never lie flat.

I suppose you could try 3x2BA Allen screws & try to “jack” out the old stud alternatively cut it off flush then drill out the rest then make a new round headed stud to fit.

Best off luck, Alan
19 March 2010 at 21:17 #49942
Gone Away
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@goneaway
Posted by Flying Fifer on 19/03/2010 20:51:58:

I`ve just gone & checked the topslide again ie had a closer look at it. It`s not a bolt its a nut with a piece of studding rivetted into it & then ground flush on the underside. ……..

In that case it does sound a bit Heath-Robinson

I suppose you could try 3x2BA Allen screws & try to “jack” out the old stud alternatively cut it off flush then drill out the rest then make a new round headed stud to fit.

Don’t need to. My (original Myford) part pushes out by hand. Are they usually that tight? I don’t know why they would need to be – it isn’t going anywhere and once you get a tool/toolholder clamped on it’s locked anyway.
30 May 2010 at 19:13 #52288
chairmanmick
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@chairmanmick
The toolpost screw should just be a push fit into the compound slide top casting, the stud should also have a roll pin to locate it in position ,i usually add a bit of locktite stud lock just to help it stay in one place. As has been stated ,the 3 (or 4) screw holes are to locate the index ring for the indexing tool post, it should be easy enough to turn up a new stud if one is required. I have made a few in the past and to save on turning down a rake of metal it is easier to machine up , bore out , then part off a base ring, then machine a new stud up from the correct diameter, and silver solder into the base ring, a lot cheaper than Myfrauds original part !!.(probably last longer as well!!) Cheers, Mick (34G !)
31 May 2010 at 08:58 #52297
KWIL
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@kwil
I hope chairmanmick’s spelling of “myford” is accidental as he is treading on dangerous ground!

If you treat your machines with respect they last longer, I have a 56 year old ML7 with its original tool post, it does now however have less use than it used to..
31 May 2010 at 18:06 #52303
chairmanmick
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@chairmanmick
Hi KWIL, My ML7 is the same age as Your’s then!, Of course I have the utmost respect for Myfords, twas only in jest Sir, having said that £20 odd pounds for what is little more than a stud is a little steep !, on the plus side I use mine daily for my business and pleasure and have had to buy very little in the way of parts in the last 10 years, so i cannot grumble. Cheers, Mick (34G)
31 May 2010 at 20:29 #52306
John Coates
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@johncoates48577
Posted by chairmanmick on 31/05/2010 18:06:57:

having said that £20 odd pounds for what is little more than a stud is a little steep !

Sounds just like my motorbikes when some odd bit of metal falls off. Bar end weights, Harris gear shift rods, fairing bolts. Need a blummin’ second mortgage. No wonder those Japanese look so inscrutable!
1 June 2010 at 11:01 #52317
KWIL
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@kwil
chairmanmick, yes a liitle steep maybe, but if you cost out the time, away from your business to make one, then maybe not so much a hit.
2 June 2010 at 12:01 #52365
Ian S C
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@iansc
Made by an apprentice, charged out as a tradesman, plus mark up, min charge 1hr, ?20 might be cheap. Ian S C
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