I realize that water jet capability has improved over the years but is it
really up to accurately cutting a M0.5 internal gear?
I have made somewhat coarser ring gears by using a 0.03125 diameter endmill
and cutting as a 2.5D job in 5mm Delrin.
-----Original Message-----
From: Gregg Eshelman via Emc-users <emc-users@lists.sourceforge.net>
Sent: March 11, 2021 1:39 PM
To: Enhanced Machine Controller (EMC) <emc-users@lists.sourceforge.net>
Cc: Gregg Eshelman <g_ala...@yahoo.com>
Subject: Re: [Emc-users] Gear cutting setup on low-cost HF mill??
Could have it water jet cut on a machine with a tilting head for kerf angle
compensation. Water jet cutters tend to make the exit side of the cut
slightly wider so a 2 axis tilting head can push all that to the waste side.
On Thursday, March 11, 2021, 3:15:07 AM MST, andy pugh
<bodge...@gmail.com> wrote:
Cutting internal teeth isn't something that can be done with a hob _or_ an
involute cutter. You need a Fellows gear shaper, or at least to find a way
to set up the equivalent on your CNC mill.
https://youtu.be/72YgpVF4O7g
I don't think it is impossible, with the cutting tool in the rotary axis,
circularly interpolating around the blank.
It might be simpler to order one wire-spark eroded for a one-off or a stock
part from HPC or similar.
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