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Gallery, Projects and General => Neat Stuff => Topic started by: ieezitin on December 26, 2015, 07:29:02 PM

Title: FACE PLATE WORK HOLDING AWKWARD OBJECTS
Post by: ieezitin on December 26, 2015, 07:29:02 PM
Not my idea it came from Mr Harrold Hall. I have a project coming up that will extend the reach of my 6'' four jaw chuck  I need to hold a 6 sided object and i need it to be controlled pretty tight so i made these nice side forcing clamps.

 (http://i721.photobucket.com/albums/ww212/ieezitin/LATHE%20FACE%20PLATE%20WORK%20HOLDING/FACE%20PLATE%20HARROLD%20HALL%206_zpsnnjqqaa5.jpg) (http://s721.photobucket.com/user/ieezitin/media/LATHE%20FACE%20PLATE%20WORK%20HOLDING/FACE%20PLATE%20HARROLD%20HALL%206_zpsnnjqqaa5.jpg.html)

Not hard to make and very useful..

(http://i721.photobucket.com/albums/ww212/ieezitin/LATHE%20FACE%20PLATE%20WORK%20HOLDING/FACE%20PLATE%20HARROLD%20HALL%205_zpsfxwl1e2r.jpg) (http://s721.photobucket.com/user/ieezitin/media/LATHE%20FACE%20PLATE%20WORK%20HOLDING/FACE%20PLATE%20HARROLD%20HALL%205_zpsfxwl1e2r.jpg.html)


as you can see they are pretty versatile....

 (http://i721.photobucket.com/albums/ww212/ieezitin/LATHE%20FACE%20PLATE%20WORK%20HOLDING/FACE%20PLATE%20HARROLD%20HALL%204_zpsmwahzmnp.jpg) (http://s721.photobucket.com/user/ieezitin/media/LATHE%20FACE%20PLATE%20WORK%20HOLDING/FACE%20PLATE%20HARROLD%20HALL%204_zpsmwahzmnp.jpg.html)

(http://i721.photobucket.com/albums/ww212/ieezitin/LATHE%20FACE%20PLATE%20WORK%20HOLDING/FACE%20PLATE%20HARROLD%20HALL%203_zpsclyrwlie.jpg) (http://s721.photobucket.com/user/ieezitin/media/LATHE%20FACE%20PLATE%20WORK%20HOLDING/FACE%20PLATE%20HARROLD%20HALL%203_zpsclyrwlie.jpg.html)


(http://i721.photobucket.com/albums/ww212/ieezitin/LATHE%20FACE%20PLATE%20WORK%20HOLDING/FACE%20PLATE%20HARROLD%20HALL%202_zpsa8vallpn.jpg) (http://s721.photobucket.com/user/ieezitin/media/LATHE%20FACE%20PLATE%20WORK%20HOLDING/FACE%20PLATE%20HARROLD%20HALL%202_zpsa8vallpn.jpg.html)


(http://i721.photobucket.com/albums/ww212/ieezitin/LATHE%20FACE%20PLATE%20WORK%20HOLDING/FACE%20PLATE%20HARROLD%20HALL%202_zpsa8vallpn.jpg) (http://s721.photobucket.com/user/ieezitin/media/LATHE%20FACE%20PLATE%20WORK%20HOLDING/FACE%20PLATE%20HARROLD%20HALL%202_zpsa8vallpn.jpg.html)

The slots in the one clamp allow the pressure to be applied perpendicular to the job via the grub screws . The other block clamps are just  buttress blocks, Align your work piece with a prick mark, center it with a carbide center, squeeze it in and clamp the piece accordingly.

Anthony.



Title: Re: FACE PLATE WORK HOLDING AWKWARD OBJECTS
Post by: jcs0001 on December 27, 2015, 10:08:34 AM
Anthony:

That's pretty slick.  Howard Hall does come up with some very good ideas.

John.
Title: Re: FACE PLATE WORK HOLDING AWKWARD OBJECTS
Post by: DavidA on December 27, 2015, 12:18:37 PM
Anthony,

Yes, those are pretty neat.

Just one question, Don't you need two 'tighteners' ? One opposing each fixed buttress.

Dave.
Title: Re: FACE PLATE WORK HOLDING AWKWARD OBJECTS
Post by: seadog on December 27, 2015, 12:35:42 PM
There are two.
Title: Re: FACE PLATE WORK HOLDING AWKWARD OBJECTS
Post by: DavidA on December 27, 2015, 01:12:44 PM
Seadog,

Where is the second one ?

And Anthony wrote...

...The slots in the one clamp allow the pressure to be applied perpendicular to the job via the grub screws . The other block clamps are just  buttress blocks,..

I did expect to see two, but can only find one; that's why I queried it.

Dave
Title: Re: FACE PLATE WORK HOLDING AWKWARD OBJECTS
Post by: seadog on December 27, 2015, 01:20:18 PM
David, the images are a little too large. if you scroll to the right you'll see the second clamp block.
Graham
Title: Re: FACE PLATE WORK HOLDING AWKWARD OBJECTS
Post by: mexican jon on December 28, 2015, 04:18:14 AM
Seadog,

Where is the second one ?

And Anthony wrote...

...The slots in the one clamp allow the pressure to be applied perpendicular to the job via the grub screws . The other block clamps are just  buttress blocks,..

I did expect to see two, but can only find one; that's why I queried it.

Dave

I had to click on the picture then look at the others in his photo bucket account before I could see the other 1  :Doh: the picture doesn't seem to be here  :doh: just on photo bucket   :hammer:
Title: Re: FACE PLATE WORK HOLDING AWKWARD OBJECTS
Post by: DavidA on December 28, 2015, 05:57:50 AM
Mexican Jon, Seadog,

That would account for it.  I assume it must be the mostly hidden clamp behind the thick vertical web.

But definitely a 'must make' item.

Dave.
Title: Re: FACE PLATE WORK HOLDING AWKWARD OBJECTS
Post by: mcostello on December 28, 2015, 11:17:22 AM
The most awkward item I had to ever had to put in a lathe was a regulation Bowling Ball. It had to have a piece parted off for a lid for an art project.
Title: Re: FACE PLATE WORK HOLDING AWKWARD OBJECTS
Post by: nrml on December 28, 2015, 12:56:01 PM
If there is still any confusion, Mr Hall's drawings for the clamps freely available on his website will clear it up. http://www.homews.co.uk/LPClSim01.pdf
His website is well worth bookmarking. It is full of very useful and interesting stuff.
Title: Re: FACE PLATE WORK HOLDING AWKWARD OBJECTS
Post by: howsitwork? on December 28, 2015, 03:43:24 PM
These clamps are truly excellent however I made mine with the tightening screws more towards the top of the blocks than the ones shown so you get a downward thrust as you tighten them. This is in keeping with Mr Hall's original design- as in Model engineering workshop where I saw them.

take care when tightening onto the t slots as you really can exert some force with these.

Happy New year one and all! :beer:
Title: Re: FACE PLATE WORK HOLDING AWKWARD OBJECTS
Post by: ieezitin on December 28, 2015, 06:37:32 PM
Dave...

I really should have paid attention while photographing the blocks, there are two force blocks and they are directly opposite one another thats the only way they work. I posted this same thread on another site and everyone commented on how this set up would not hold the angle block and HSS spacer, i only threw them on the face plate for a visual... alas they are correct, these little blocks would not hold this set up and i did not  intend them to hold items like these of such height.

I did not make them exactly to Harrold halls print... i just was in the shop and machined on the fly as that is a normal MO for me to do, i must say (howsitwork) comment on the screw height is correct, none the less these blocks will work fine for what i need now and i am going to size the blocks up and make another set for different size work, these are a must in your tool work holding crib.


God Bless..... Anthony.