milling machine help needed

[jugs]

right took the spinlde in today and it wont work
theres not enough material on the spinlde to
convert it to r8!

so its for sale just want to get back what it owes me
and go get something with a more common taper

someone with a bit of engineering back ground would
probley be able to sort it

thanks for all the advice mike

No, no, no, you dont want to be doing that.
Very nice solid machines, far nicer & more rigid than a Bridgeport (most things are imo). If I didnt have 5 millers allready I'd snap your hand off!!

the gorton collet is about 3in long and the r8 is 4in
im worried about the metal being to thin
because where the spindle goes though the bearing
the spindles not much bigger than the r8 collet?

Can you give the dimensions of your collet. Major & minor dia's + length between them, and length & dia of any parallel.

Which model machine is it?? I used to use an 8 or 9 and Im almost positive (I think) that we changed the taper to MT3, you should get your local machine shop to bore it out for you but you must finish it in the miller to keep it concentric. (a simple job, when you now how!) If you dicide to do it I'll provide you with instructions.

Lots of lowcost MT tooling available try-
http://www.arceurotrade.co.uk/Catalogue/Collets/ER-Collets-Collet-Chucks/ER25-Collets-Collet-Chucks
http://www.arceurotrade.co.uk/Catalogue/Cutting-Tools/Boring-Tools
http://www.rdgtools.co.uk/cgi-bin/s...=3+MORSE+TAPER+FLY+CUTTER&ACTION=quick+search


For more info on the machines, try -
rick @ gortons dot net

 

[bigwillyz]

hi i think its an 8-d? but not to sure

i had a look at the mt2 with the flat top and the
dimensions dont look to far out

ill measure the gorton collet today
and put it up later

as for the machineing the engineering shop i
went to where worryed about latheing it out
saying how hard the spindle is

but spoke to a friend last night
(whos from angelsey aswell) and he said his engineer
would probley have a go as hes intreasted in one offs

wish i had the tools to do it myself

 

[hareng]

For reference the MT3 collets are variable i length from around 81 to 86.39mm.
Where it would pull up to (the useable length) you would lose just short of 5mm about 3/16".
Cant see why any one uses ER or Clarkson takes an eternity to change cutters and collets plus losing height and an extra element in concentricity.
True the ISO are great but expensive, R8 superb, next best MT- Slacken draw bar 1/4 of a turn, tap it and cutter drops out, new one in job done 10 secs!