Knocking one off the list ,,, Tapping attachment

[Rob.Wilson]

Hi Lads

Being at a bit of a loose end this afternoon i thought i would make a start on a tapping tool ,,,, giving it a bit thought i decided instead of making the complete tool i would make an attachment to fit my new ped/drill as it has a good stiff column and large table ,,, this way i would save on shop space , material and time   

The design so far ,  going to be a welded up job 


It will fit here, between the collar and head casting  and can be swung out of the way when not required


Selection of mystery metal for the job 


A bit of ruff machining to size and welding 






I still have to make and weld in the webs




When i have it all welded up i will stick it in the furnace for a bit of stress relieving  ,, then machine it up proper 


Rob 

[Brass_Machine]

Very nice Rob.

When i have it all welded up i will stick it in the furnace for a bit of stress relieving  ,, then machine it up proper 


Rob

I was going to ask about it being square and perpendicular, but I think you answered it for me.

What did you weld it with?

Eric

[trevoratxtal]

Nice one!
 but does it not interfere with the table rack on the support column ?
I did wonder how you would keep the two bored bushes parallel, but see at the end you had allowed for it, with stress relief then finish boring.
I am a great believer where possible to prefab with the welder, I like welding as well as turning.
As I said nice one, many thanks for the pics.
Trev

[Rob.Wilson]

Hi Eric 


Just zapped it with my MIG welder  .


Trev ,,,,,,,,, it goes  here 




Rob

[Bluechip]

Hi Rob

Nice idea.. would it not be easier to make a two-piece clamp? No need to dismantle the drill M/C. Or have you discounted that idea ?

I notice some clumsy oaf has poked holes in the cross-vice.... 

Dave BC

[doubleboost]

Very nice  
That weld looks a bit pourous  

[Bluechip]

Very nice  
That weld looks a bit pourous  

Not porous John, bit of fag-ash in it for reinforcing ... 

Dave BC

[Rob.Wilson]

Hi Rob

Nice idea.. would it not be easier to make a two-piece clamp? No need to dismantle the drill M/C. Or have you discounted that idea ?

I notice some clumsy oaf has poked holes in the cross-vice....  

Dave BC

Dave ,,,,,,,,,,  i will sharp remove the head ,,, well this lanky bloke i no will   John    him taller than me  


Hole'ssssssss,,,,,, wonder  who did that    





Rob

[doubleboost]

I do like a nice weld  

[Bluechip]

[/quote]



Hole'ssssssss,,,,,, wonder  who did that    







Rob
[/quote]

Yeah .... I did wonder .... but not for long ....

Dave BC

[Jonny]

Take no notice of them, i would have tacked it to the table

[Dean W]

Crikey.. do you think it will be sturdy enough, Rob?  Looks like a con-rod for the QE-2!  
Guess it will be okay if you are only tapping small holes, like 1"-8 tpi.  If it's not stout enough
you could always put a platter on it for a swing-out hors d oeuvres server.
 

You go, Mister!  (and I didn't see no stinkin' holes..)

[John Stevenson]

What did you weld it with?

Eric

Chewing gum by the looks of it.......................

[scrapman]

Looking good so far Rob

Ray.

[Rob.Wilson]

cheers lads 

Rob 

[Rob.Wilson]

Thought it was still under engineered for 14 BA   so i welded some extra bits on  





Into the furnace for a bit of a warm up ,,,


it can stay there for now,,,,, until tomorrow to cool down slowly and normalize  stress relief


Rob

[Blade]

That is coming out very nice!

[arnoldb]

    Great going Rob 

  Good to see you got the shop defrosted enough to get back in there 
    With the furnace started, things should heat up a whole lot more 

  Are you going to beef up the ped/drill's column and base to cope with the forces of those 14BAs ? 

Cracking job as usual mate 

Kind regards, Arnold

[doubleboost]

It would be a good idea to make 2
One for each side to stop it from tipping over

[Artie]

oh...all de funny mens....... mate, looks great.... if a tad over engineered.... jesus bloke! How large are ya gonna tap?  

As always the stuff coming R W Engine Works is first rate.... you do keep the bar right up there fella.... great work....

[andyf]

Looks like it's going to be a really useful piece of kit. The arm is pretty long, and the beefiness will certainly give it rigidity. So, unlike many puny tapping stands, you will be able to tap holes a long way in from the edge of the material. Great job.

Andy

[raynerd]

Looks spot on Rob. Could you explain why it goes in to the furnace?

[Stilldrillin]

Top notch engineering Rob! 

Can you bring a little of that heat down here, for my shop? Getting just a little bored with looking at wallpaper/ tele etc..... 

David D

[Rob.Wilson]

Looks spot on Rob. Could you explain why it goes in to the furnace?

Hi Chris

The part was stuck in the furnace so that i could get rid of any internal stresses in the welded part that may have built up due to welding.

Over time the internal stresses can cause the part to move ,, they can also come out when machining operations are carried out .Just like when you machine more off one side of length of bright mild steel flat bar

So it was placed in the furnace brought up to heat and left to soak a heat for 1/2 an hour (rule of thumb for soak time is 1 hour per inch of thickness ) then left to cool down very slowly .


Rob

[Rob.Wilson]

Hi Lads ,,,,,,,,,,,, your comments are killing me  


Well its cooled down now and i have given it a quick blast to remove the black scale ,, some shots of it clean with a couple of every day shop tools in for scale  






I will start machining it the morn (tomorrow)

David :    furnace is to well insulated ,,, you have to get in it to feel the heat  


Rob