RE: Thread Calculator/CNCPro

With the sherline your would approach it the same as a mill. Their is no threading attachment.

Paul

-----Original Message-----
From: Jon Elson [SMTP:jmelson@...]
Sent: Wednesday, February 16, 2000 12:40 AM
To: CAD_CAM_EDM_DRO@onelist.com
Subject: Re: [CAD_CAM_EDM_DRO] Thread Calculator/CNCPro

From: Jon Elson <jmelson@...>



Paul Devey wrote:

> From: Paul Devey <Paul_Devey@...>
>
> Speaking of CNCPro and things I'd like to see: the ability to cut
> threads
> using CNCPro. I gues that means having an encoder on the spindle to
> determine the phase relationship to the cutter?

That depends on whether you are talking about a mill or lathe.
On the lathe, you need the spindle encoder.
On the mill, for larger holes (about 3/8" and over) you can
use a thread mill, which somewhat resembles a tap but with
the rows of teeth all in a line, instead of a helix. Because these
units are expensive, and can be used for only one thread pitch,
I got a 1/4" single-row thread mill, which can do a wide range
of threads. It is really nice for cutting odd diameter threads, such
as camera lens threads, or anything much over 1/2", due to the
cost and torque required for the big taps.

Jon


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