MadModder
The Shop => Our Shop => Topic started by: BK on November 07, 2010, 04:51:31 PM
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I just bought myself a mill, it's a Hafco HM 30 (ya China) 3 yrs old and done little work.
(http://i160.photobucket.com/albums/t184/oldcranker/100_3595.jpg)
It came with a LOT of extras like a 12" rotary table.
(http://i160.photobucket.com/albums/t184/oldcranker/100_3596.jpg)
5" HD swivel vice
(http://i160.photobucket.com/albums/t184/oldcranker/100_3597.jpg)
3 1/2" tilting vice
(http://i160.photobucket.com/albums/t184/oldcranker/100_3598.jpg)
2 sets of holddowns.
(http://i160.photobucket.com/albums/t184/oldcranker/100_3600.jpg)
A set of collets and end mills plus a 70mm flycutter
(http://i160.photobucket.com/albums/t184/oldcranker/100_3601.jpg)
Plus a box of Alum billets
(http://i160.photobucket.com/albums/t184/oldcranker/100_3599.jpg)
I'm happy with my "haul" to buy the extras new would cost more then I paid for the whole lot. :D
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Nice haul :)
They're actually very useful machines - my one is a Taiwanese NuTool version. It was knackered when I got it so have been modifying it at every opportunity (see http://billtodd.dyndns.org/drillmill)
Bill
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Nice haul!
Eric
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Good buy i thinks thats known as the RF30 over here, i have the equivalent of the RF25 doing very little.
Leadscrew nuts are a bit naff mine broke within two years so did the motor mid job.
The only thing that spoils them is the round column.
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Bernie.
That's a great starter pack. Yer off to a flier there! :clap:
BIG learning curve ahead........ Enjoy! :thumbup:
David D
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Hi David, been 2 days setting it up but this arvo I made chips. :)
It seems a very solid machine (very big too), just a matter of working out speeds, how to hold work down, how to, how to , how to, how to, :bugeye: :jaw: :lol: :bang:
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Bernie.
If yer don't already know.......
Find out what climb milling is, and DON'T DO IT! :bugeye:
:thumbup:
David D
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nice haul though that ali is dangerous to your health so being old and caring send it to me and I will dispose of it for you
cheers
Pete
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Bernie.
If yer don't already know.......
Find out what climb milling is, and DON'T DO IT! :bugeye:
:thumbup:
David D
Yep, my younger brother has an old mill, been told thanks David.
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Bernie.
If yer don't already know.......
Find out what climb milling is, and DON'T DO IT! :bugeye:
:thumbup:
David D
Actually, if you sort the nuts out and clamp the head tight, the machine is just about rigid enough to cope with light cuts.
As a quick fix, I cut the nuts across the split, faced the cut ends and reassembled thus...
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Be very careful with the quill on these machines. It WILL drop when you least expect it and take a gouge out of your job.
Make sure it is physically pushed DOWN before you tighten up the quill lock, and this needs to be done between cuts.
There are a few mods about to cure this problem, and they usually concern a weight and a pulley to counteract the weight of the quill, so effectively pulling it UP all the time.
Just be careful.
Bogs
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As Bogs has pointed out the quill dose drop on these machines ,giving a poor finish when boring and worse if you are doing an intermittent cut ,say cutting a radius on cylinder saddle using a boring head and down feeding the quill.
The cutter will move up as it comes in contact with the work and drop as it leaves :bang:
So the quill needs to be loaded up so that it is always in contact with the quill feed pinion.
Mods done to my RF25 MILL/DRILL ,,,spring attached to collar on quill ,fed up through the head casting and secured to the belt guard .. Sorted .
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1020762.jpg)
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1020763.jpg)
Got rid of the two nuts that lock the head , fitted two levers ,,,Replaced the small lever that locks the belt tensioner with a T bar ,,, and fitted lever to motor mount plate to make belt tensioning easier.
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1020761.jpg)
Rob
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I haven't seen it done that way Rob, nice one.
I forgot to mention in my last post, if you do such a mod as Rob has done, there is no need to do what I said in the first part, about making sure the quill was fully down.
Bogs
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Its been 6 years since ive used mine but i cannot honestly recall seeing the quill drop in over 4 years.
Reason i always put tension on with the quill lock when winding the Z feed. If a heavy cut i will tighten up the quill before putting a cut on.