The Shop > Tools

Tool Post Grinder

<< < (14/19) > >>

Darren:
No gears or key on a pin chuck Stew, just a threaded nut like a collet holder.

The rotation, if in the right direction, can only cause it to tighten.  :thumbup:

Edit, looks like what you have, so I'm lost now too  :scratch: Maybe takes a small collet?

bogstandard:
What Stew has is a mini chuck, slidy bits wiv springs inside.

This is a pin chuck

http://www.axminster.co.uk/product.asp?sessionID=QOL&pf_id=33442&name=pin+chuck&user_search=1&sfile=1&jump=0

But unfortunately it doesn't go up to the size required, but they are very accurately made.


These are pin vices

http://www.axminster.co.uk/sessionID/QOL/product-Axminster-Pin-Vice-Set-33440.htm

Not as accurately made as a pin chuck, but do go up to the size required. With a little bit of work, they can be made accurate enough to do the job.

Before doing any of the below, you will have made one of your adapters to fit the grinder and drilled a nice concentric hole in the end, say 1/4".

Find the pin vice you want, say to fit a 1/8" mounted point.

Get rid of most of the handle and leave about 1/2" under the thread.

Mount a short length of 1/8" silver steel into your lathe mounted ER collet chuck.

Then grab the stub of SS sticking out of the chuck with what is left of the pin vice.

Using you newly made toolpost grinder, gently grind back the stubby area under the threads until it is nice and concentric and is a nice snug fit in the hole in the end of the adapter you have made.

Stick the two together with loctite.

That is basically how the one on my grinder is. :clap:

Bogs

sbwhart:
Ha Haaaa the penny has dropped  :thumbup:

I can remember you showing me this but it was all too much for me to take in at the time.

Thats a real neat idea John, When I got the mini chuck it just didn't seem right, and when I fited it I knew it wasn't up to the job.

I place an order for some pin chucks.

Thanks John


Stew

John Hill:
Excellent work Stew!  Meanwhile I have a little way to go with mine.

sbwhart:
Thanks Chaps

I hope to make good use of it in future projects, they realy are a usfull bit of kit that helps you to take on jobs that you would have strugled with.

Cheers

Stew

Navigation

[0] Message Index

[#] Next page

[*] Previous page