Re: Tapping Heads

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

discussion of shop built systems in the above catagories.

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>