Little Lathe, Big Work- A Crash Course Into The Unknown.

[Ulma Doctor]

I had a project a while back that i'm just now getting to make a story of.
I had a project that involved modifying an existing steel grinding fixture for my rotary surface grinder.
the fixture wasn't hardened, so machining was a good time!
the fixture is about 7" OD. way too large for my working machines!
i took it as a challenge to accomplish the feat.
i gave the shoulder tap to my vintage 9X22" Hercus ARH Lathe...


a 6" scale is held up to the work

this is an after shot, i didn't think to take a before shot.

I parted a ridge off of the fixture that was about .375" thick.
then faced the end.
i then cut a recess .200" deep into the fixture and made a step inside the fixture 5" across.

heres a side view.





i drilled the spring pin bore after the lathe work was performed.
i used the industrolite M500 to bore the spring pin hole with a 4 flute carbide endmill to the planned depth of .375".
a conventional drill bit would not have been able to be used due to the proximity of the spring pin to step bore and where it's location was needed.

i remounted the work on the lathe for photogenic purposes.

the finish was smooth as silk,
i have a lot more respect for the lil Hercus, it can make some beautiful work!

thanks for reading!

 

[brino]

Mike,
Nice work. It's great when you have the tools and skill to do it all yourself.
Me I still need a few tools and a whole lot of skills.......

Today the lathe and the mill help modify parts for the surface grinder.
Tomorrow maybe the grinder can return the favour.
-brino

 

[Ulma Doctor]

Thanks Brino,
it helps a lot to have tools,
but you have to be half crazy to try some of the stuff i try...

where there is a Will, there is a Way!

 

[JimDawson]

but you have to be half crazy to try some of the stuff i try

I understand that one well

 

[brav65]

Nice work Mike, so when do you start to scrape it in so that it is dead flat?

 

[kvt]

That's not crazy, It ingenuity. nice work

 

[chips&more]

You have a rotary surface grinder? Boy, do you suck!

 

[Ulma Doctor]

Nice work Mike, so when do you start to scrape it in so that it is dead flat?

Thanks Brooks ,
funny you should mention scraping the fixture, i haven't started yet- but it's going to happen!

 

[Ulma Doctor]

That's not crazy, It ingenuity. nice work

Thank You Very Much KVT !

You have a rotary surface grinder? Boy, do you suck!

Thanks Chips, that's the nicest thing said to me today!

 

[benmychree]

Dang it Mike,I was hoping to see a picture of the surface grinder!!!!