RE: [CAD_CAM_EDM_DRO] Re: Speed of Tapping Head?

Hi Dave,

Thanks for the reply. Surely the 2000rpm is for the input spindle of the
tapping head? Is the tap turning that fast, or is it geared down by the
tapping head. I was expecting something like 30- 60 rpm.

Thanks

Peter Homann
<mailto:peter.homann@...>
Work : +61 3 8530-7755
Adacel Technologies Ltd Fax : +61 3 9596-2960
250 Bay St, Brighton 3186, VIC, AUSTRALIA Mobile : 0421 601665
http://www.adacel.com.au Australian Software Engineering Excellence

> -----Original Message-----
> From: turbulatordude [mailto:davemucha@...]
> Sent: Friday, 26 July 2002 9:12 PM
> To: CAD_CAM_EDM_DRO@yahoogroups.com
> Subject: [CAD_CAM_EDM_DRO] Re: Speed of Tapping Head?
>
>
> My Procunier manual says that for my #1 tapping head, that 3,000 RPM
> is the maximum tapping speed. This one handles up to a 1/4 inch tap
> in aluminum, or an 8mm threadforming tap.
>
> the maximum for my #2 head is 2,000 RPM. and that one handles up to
> a 1/2 inch tap in aluminum.
>
> I usualy tap at much lower speeds (500 rpm) (thank goodnes that there
> are no metric time units to convert) as I think tap life would be
> increased and since I am not a production shop, tap life is way more
> important than speed of making a part. Also since I usually tap at
> 1/4 in in aluminum on the #1 and 1/8npt on the #2.
>
> If you wanted to figure out exactly the most desirable maximum speed
> for your part, figure the tap circumference to determine sfpm of the
> cutter. Then you can look up the metal you are tapping and figure
> the cutting speed. Kind of like figuring lathe rpm by surface feet
> per minute. Then with the tap material, probably HSS, you can locate
> the best cutting speed SFPM.
>
> and remember to keep the taps well lubricated. probably the single
> biggest thing to keep tap life.
>
> Hope that helps.
>
> Dave
>
>
>
> --- In CAD_CAM_EDM_DRO@y..., "Peter Homann" <peter.homann@a...> wrote:
> > Hi,
> >
> > I'm looking at constructing a small electronic tapping head for my
> Taig CNC
> > Mill. By electronic, I mean that the tapping head will be driven by
> a small
> > 12 dc motor geared down to an appropriate speed. The direction will
> be
> > controlled by micro switches and possibly a PIC microprocessor.
> >
> > The tapping head is to tap up to 6mm (1/4"), and if I can 8mm. My
> question
> > is:
> >
> > What is an appropriate speed for a tapping head?
> >
> > Thanks in advance.
> >
> > Peter Homann
> > <mailto:peter.homann@a...>
> > Work : +61 3 8530-7755
> > Adacel Technologies Ltd Fax : +61 3 9596-
> 2960
> > 250 Bay St, Brighton 3186, VIC, AUSTRALIA Mobile : 0421
> 601665
> > http://www.adacel.com.au Australian Software Engineering
> Excellence
>
>
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