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Posted by mark on April 30, 2008, 5:11 pm
Please log in for more thread options On Apr 30, 9:53=A0pm, Austin Shackles
> On or around Wed, 30 Apr 2008 20:42:58 +0100, Tim Leech
>
>
>
>
>
> >On Wed, 30 Apr 2008 19:26:29 +0100, Austin Shackles
>
> >>What's a typical cutting speed for (assumed) mild steel, using an HSS to=
ol?
>
> >>I've got some steel van wheels on which I need to put chamfers on the ho=
les.
> >>I've got a 90 degree 6-flute cutter, but I'm wondering what speed I can =
run
> >>it. =A0The drill which will be easiest to use only goes down to about 45=
0rpm.
> >>To use the big drill (which will run slower) I have to do the work with =
the
> >>tyres off, which makes it more hassle.
>
> >>I don't know that they're mild steel, mark you. =A0But I doubt they're
> >>anything exotic.
>
> >I sometimes do hole chamfers for flush rivetting with a 3-flute
> >countersink in a mini mag drill, which runs at 450 rpm. If everything
> >isn't 'just so' it will tend to chatter, I should think a hand-held
> >drill would be worse. Holes are usually around 5/8" dia.
>
> this is going to be done in the new toy, which is the floor-mounted versio=
n
> of this:
>
> http://www.axminster.co.uk/product-Perform-CCRD-Radial-Pillar-Drill-2...
>
> cheap but not too badly made. =A0The 6-flute 'sink is supposed not to chat=
ter
> so much...
>
> hmmm.
>
> say 1" dia, that's about 3" circumference or abotu a quarter of a foot, an=
d
> 450 rpm... 112.5 FPM. =A0bit fast, then, I really want about a couple of
> hundred rpm. =A0arse, that means bringing the wheels here from the tyre pl=
ace,
> working on them and taking them back to have tyres fitted. =A0The big mach=
ine
> that goes slowly doesn't have enough overhang.
>
> That or modify the drill, of course - I had been thinking about an idler
> pulley set and 2 belts to get more speeds, and I've got a spare pulley blo=
ck
> somewhere...
>
> However, Ideally I want it done tomorrow, provided the wheels are to hand.=
>
YEAH right ....."TOY"
and to blinking fast .
have a look at this beauty
http://cgi.ebay.co.uk/Kitchen-Wade-Radial-Drilling-Machine_W0QQitemZ32024620=
7524QQihZ011QQcategoryZ64819QQssPageNameZWDVWQQrdZ1QQcmdZViewItem
all the best.markj
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>
> I've got some steel van wheels on which I need to put chamfers on the holes.
> I've got a 90 degree 6-flute cutter, but I'm wondering what speed I can run
> it. The drill which will be easiest to use only goes down to about 450rpm.
> To use the big drill (which will run slower) I have to do the work with the
> tyres off, which makes it more hassle.
>
> I don't know that they're mild steel, mark you. But I doubt they're
> anything exotic.
> --
> Austin Shackles. www.ddol-las.net my opinions are just that
> Travel The Galaxy! Meet Fascinating Life Forms...
> ------------------------------------------------
> >> http://www.schlockmercenary.com/ << ...and Kill them.
> a webcartoon by Howard Tayler; I like it, maybe you will too!