Re: Tapping Heads

----- Original Message -----
From: Dan Mauch <dmauch@...>
To: <CAD_CAM_EDM_DRO@onelist.com>
Sent: Tuesday, October 05, 1999 11:08 PM
Subject: Re: [CAD_CAM_EDM_DRO] Tapping Heads


> From: "Dan Mauch" <dmauch@...>
>
> Jon 800 IPM is nothing. In the a CNC magazine they are talking about 2300
> IPM!
> -----Original Message-----
> From: Jon Elson <jmelson@...>
> To: CAD_CAM_EDM_DRO@onelist.com <CAD_CAM_EDM_DRO@onelist.com>
> Date: Tuesday, October 05, 1999 4:13 PM
> Subject: Re: [CAD_CAM_EDM_DRO] Tapping Heads
>
>
> >From: Jon Elson <jmelson@...>
> >
> >
> >
> >Paul Corner wrote:
> >
> >> From: Paul Corner <Paul.Corner@...>
> >>
> >> > I set the 1J head for 210 RPM, and computed the feed rate for
> >> > a 6-32 thread as 210/32 = 6.56 IPM, and so the retract would be 13.12
> IPM.
> >>
> >> A bit slow on the spindle speed isn't Jon ?
> >> Seen a machine in use at the NEC running at 8000rpm with an M6 tap.
> >
> >Hey, you've got to realize, this is a 58 year old machine, with X and Y
> >axis drives pulled out of an Excellon circuit board drill that was
designed
> >to push a 5 Lb air-bearing table around. Also, I don't have taps with
oil
> >cooling holes in them!
> >
> >Once I build confidence in this whole business, I might turn up the speed
> >and feed rate. But, this is the FIRST time I've ever used this type of
> >tapping, and I had no idea if it was going to break taps, the tapping
head,
> >try to tap all the way through my vise, or whatever. (Actually, I did
some
> >practice cycles off to the side of the vise and work, but then the
tapping
> >head functions only when the tap actually contacts the work.)
> >
> >Everybody is talking about 800 IPM rapid feeds, nowadays! Well,
> >crazy! If I had an 800 IPM rapid, I'd have to bolt my machine to the
> >floor, or it would tip over!
> >
> >Jon
> >
> >>Welcome to CAD_CAM_EDM_DRO@...,an unmoderated list for the
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> >bill,
> >List Manager
> >
>
> > Welcome to CAD_CAM_EDM_DRO@...,an unmoderated list for the
discussion of shop built systems in the above catagories.
> To Unsubscribe, read archives, change to or from digest.
> Go to: http://www.onelist.com/isregistered.cgi
> Log on, and you will go to Member Center, and you can make changes there.
> For the FAQ, go to http://www.ktmarketing.com/faq.html
> bill,
> List Manager