Do you have a WEDM? Maybe a friend does? Then mount a U axis.
This is the closest
On 22 October 2014 08:45, roland.jollivet roland.jolli...@gmail.com wrote:
Do you have a WEDM? Maybe a friend does? Then mount a U axis.
I have used one. But I am actually perfectly content with the setup I
have already used.
--
atp
If you can't fix it, you don't own it.
On 21 October 2014 04:27, Dave Cole linuxcncro...@gmail.com wrote:
Is that a servo driven indexing head?
Yes:
http://www.cnczone.com/forums/general-metalworking-machines/172314-servo-cnc-conversion-vertex-bs0-dividing-head.html
--
atp
If you can't fix it, you don't own it.
On 21 October 2014 04:31, Dave Cole linuxcncro...@gmail.com wrote:
Andy are you going to have those hardened?
Yes and no. I am going to harden them. I am finally going to assemble
the heat-treatment muffle that I have been accumulating parts for for
years.
--
atp
If you can't fix it, you
An induction heater or a resistive heat treat box?
JT
On 10/21/2014 4:31 AM, andy pugh wrote:
On 21 October 2014 04:31, Dave Cole linuxcncro...@gmail.com wrote:
Andy are you going to have those hardened?
Yes and no. I am going to harden them. I am finally going to assemble
the heat-treatment
On 21 October 2014 12:55, John Thornton bjt...@gmail.com wrote:
An induction heater or a resistive heat treat box?
Resistive. I have a reel of Brightray C, an SSR, a furnae controller
and an Alumina tube.
--
atp
If you can't fix it, you don't own it.
http://www.ifixit.com/Manifesto
On 10/21/2014 8:59 AM, andy pugh wrote:
On 21 October 2014 12:55, John Thornton bjt...@gmail.com wrote:
An induction heater or a resistive heat treat box?
Resistive. I have a reel of Brightray C, an SSR, a furnae controller
and an Alumina tube.
FWIW, there is a local heat treatment company I
On 21 October 2014 16:17, Dave Cole linuxcncro...@gmail.com wrote:
To case harden a part like the one you have would cost less than a
dollar each. I don't know if you have any heat treatment shops around
you at all. But it might be worth a visit if you do.
I made a few enquiries in the
Oh well..
I used to be a metallurgist, advising on heat-treatment processes :-)
In that case... I'll need your address as I need to send you some parts.. ;-)
Dave
On 10/21/2014 11:30 AM, andy pugh wrote:
On 21 October 2014 16:17, Dave Cole linuxcncro...@gmail.com wrote:
To case harden a
On 10/20/2014 02:47 PM, andy pugh wrote:
In the end, I deicded to do it like this:
http://youtu.be/86MN3CN7Aiw
The attached is my next guess on how to machine the clutch with a
horizontal mill. The rotary axis would need to be geared with the canted
Y axis. Complex axes gearing has been
On 21 October 2014 16:52, Kirk Wallace kwall...@wallacecompany.com wrote:
The attached is my next guess on how to machine the clutch with a horizontal
mill. The rotary axis would need to be geared with the canted Y axis.
That would probably give a better geometry for the ramp, but I think I
On 10/21/2014 08:52 AM, Kirk Wallace wrote:
On 10/20/2014 02:47 PM, andy pugh wrote:
In the end, I deicded to do it like this:
http://youtu.be/86MN3CN7Aiw
The attached is my next guess on how to machine the clutch with a
horizontal mill. The rotary axis would need to be geared with the
In the end, I deicded to do it like this:
http://youtu.be/86MN3CN7Aiw
--
atp
If you can't fix it, you don't own it.
http://www.ifixit.com/Manifesto
--
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On Monday 20 October 2014 17:47:53 andy pugh did opine
And Gene did reply:
In the end, I deicded to do it like this:
http://youtu.be/86MN3CN7Aiw
Looks like that would leave a slight concavity in the face ramps. But I
do not believe it will matter. What it will do is leave a sharp stress
Well done Andy.
With regards to your comment on the video about I don't think I have seen
another CNC horizontal miller.
I did see a Centec 2A CNC'd somewhere on-line, and I, too, have a
Horizontal miller that'll get done one of these years.
Certainly, you did a very good job of your conversion
That worked out nicely.
Is that a servo driven indexing head?
Did you try out the part yet?
Dave
On 10/20/2014 5:47 PM, andy pugh wrote:
In the end, I deicded to do it like this:
http://youtu.be/86MN3CN7Aiw
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On 10/20/2014 6:01 PM, Gene Heskett wrote:
On Monday 20 October 2014 17:47:53 andy pugh did opine
And Gene did reply:
In the end, I deicded to do it like this:
http://youtu.be/86MN3CN7Aiw
Looks like that would leave a slight concavity in the face ramps. But I
do not believe it will matter.
On 10/20/2014 3:47 PM, andy pugh wrote:
In the end, I deicded to do it like this:
http://youtu.be/86MN3CN7Aiw
Very likely how it was originally done, large diameter cutters to
minimize dishing of the ramps.
Could use a specially made four position indexer with power feed and
rotate timed to
http://www.geutskens.eu/neracar/images/PPL/6-Engine/6-Foot%20Starter%20Assy/03-620-Locknut,%20Magneto,lv-gec.jpg
I am struggling to come up with a plausible setup to machine a few of
these. (It is a Ner-a-Car starter clutch).
I have a CNC mill with a tilting 4th-axis and also a swivelling head.
I looked at the face of the slope and think it was done :-
endmill the path along arrow
http://www.collection.archivist.info/archive/mirror/03-620-Locknut,%20Magneto,lv-gec.jpg
then rotate around A 90 rinse repeat
Dave Caroline
On 13/10/2014, andy pugh bodge...@gmail.com wrote:
On 13 October 2014 12:50, Dave Caroline dave.thearchiv...@gmail.com wrote:
I looked at the face of the slope and think it was done :-
endmill the path along arrow
http://www.collection.archivist.info/archive/mirror/03-620-Locknut,%20Magneto,lv-gec.jpg
My impression is that they are a true
Good Day,I suggest that a side and face cutter with a dia equal to the radius
of the dog clutch ramp .john
From: bodge...@gmail.com
Date: Mon, 13 Oct 2014 12:35:46 +0100
To: emc-users@lists.sourceforge.net
Subject: [Emc-users] How to machine
http://www.geutskens.eu/neracar/images/PPL
On 13 October 2014 13:07, john mcintyre johnan...@live.com.au wrote:
Good Day,I suggest that a side and face cutter with a dia equal to the
radius of the dog clutch ramp
I am not 100% sure what you are suggesting, can you elaborate?
As I see it the acute angle between the ramp face and the
The witness marks on
http://www.geutskens.eu/neracar/images/PPL/6-Engine/6-Foot%20Starter%20Assy/02-620-Locknut,%20Magneto,rev-gec.jpg
tell me it was not a true spiral
Dave
On 13/10/2014, andy pugh bodge...@gmail.com wrote:
On 13 October 2014 13:07, john mcintyre johnan...@live.com.au wrote:
tooth. cheers
john
From: bodge...@gmail.com
Date: Mon, 13 Oct 2014 13:12:51 +0100
To: emc-users@lists.sourceforge.net
Subject: Re: [Emc-users] How to machine
On 13 October 2014 13:07, john mcintyre johnan...@live.com.au wrote:
Good Day,I suggest that a side and face cutter with a dia
. cheers
john
From: bodge...@gmail.com
Date: Mon, 13 Oct 2014 13:12:51 +0100
To: emc-users@lists.sourceforge.net
Subject: Re: [Emc-users] How to machine
On 13 October 2014 13:07, john mcintyre johnan...@live.com.au wrote:
Good Day,I suggest that a side and face cutter with a dia equal
On 13 October 2014 13:36, Dave Caroline dave.thearchiv...@gmail.com wrote:
The witness marks on
http://www.geutskens.eu/neracar/images/PPL/6-Engine/6-Foot%20Starter%20Assy/02-620-Locknut,%20Magneto,rev-gec.jpg
tell me it was not a true spiral
Do you mean the partial polishing or the grooves in
I dont think it is that tapered I think a plain endmill will be close enough
specially considering its age and available tools at the time
Dave
On 13/10/2014, andy pugh bodge...@gmail.com wrote:
On 13 October 2014 13:36, Dave Caroline dave.thearchiv...@gmail.com
wrote:
The witness marks on
Not sure what I am missing but it looks like just a simple part with some
vertical ramps on the face. Probably could cut it vertically in a round
fixture or rotab vertically with a ball endmill and 3d mill the ramps and
cut the rest with flat endmill. If there is a slight taper to the lug faces
Experimenting in CAD...
The obvious approach does strange things to the tips of the dogs:
https://picasaweb.google.com/lh/photo/tOjgesG_f8aS02zviyc_Q9MTjNZETYmyPJy0liipFm0?feat=directlink
More angle to miss the tips is even wrongerer.
I think you are missing the actual curve assuming it was cut angular.
I dont have a running 3d modeler at the moment so have added a cheese
wedge to the plane of the dog face
http://www.collection.archivist.info/archive/mirror/03-620-Locknut,%20Magneto,lv-gec.jpg
Dave
On 13/10/2014, andy pugh
On 13 October 2014 16:18, Dave Caroline dave.thearchiv...@gmail.com wrote:
I think you are missing the actual curve assuming it was cut angular.
http://www.collection.archivist.info/archive/mirror/03-620-Locknut,%20Magneto,lv-gec.jpg
If you mean what I think you mean, it looks closer:
Yes that now seems to me to be close to original method, time to
look/measure originals and guess what has worn away.
I think is one was thinking of strength of the teeth it is not
optimal, but old designs were often ner-enuf
Dave
On 13/10/2014, andy pugh bodge...@gmail.com wrote:
On 13 October
On Monday 13 October 2014 07:35:46 andy pugh did opine
And Gene did reply:
http://www.geutskens.eu/neracar/images/PPL/6-Engine/6-Foot%20Starter%20
Assy/03-620-Locknut,%20Magneto,lv-gec.jpg
I am struggling to come up with a plausible setup to machine a few of
these. (It is a Ner-a-Car starter
On 13 October 2014 16:55, Dave Caroline dave.thearchiv...@gmail.com wrote:
I think is one was thinking of strength of the teeth it is not
optimal, but old designs were often ner-enuf
I could use this variant:
LOL. Just noticed the scale of the thing. Only 1/8 tall ramps? File it
by hand. Only you know what it mates to and its exact function. How
precise does it need to be?
SMD
On Mon, Oct 13, 2014 at 11:33 AM, andy pugh bodge...@gmail.com wrote:
On 13 October 2014 16:18, Dave Caroline
I also think there could have been a flat on the tooth top if the
curve/slop finished earlier
Dave
On 13/10/2014, andy pugh bodge...@gmail.com wrote:
On 13 October 2014 16:55, Dave Caroline dave.thearchiv...@gmail.com
wrote:
I think is one was thinking of strength of the teeth it is not
On 13 October 2014 17:14, Stephen Dubovsky smdubov...@gmail.com wrote:
LOL. Just noticed the scale of the thing. Only 1/8 tall ramps? File it
by hand. Only you know what it mates to and its exact function.
The page I linked to earlier also has the mating gear.
If I was only making one, then
http://www.geutskens.eu/neracar/images/PPL/6-Engine/6-Foot%20Starter%20Assy/03-620-Locknut,%20Magneto,lv-gec.jpg
I am struggling to come up with a plausible setup to machine a few of
these. (It is a Ner-a-Car starter clutch).
Andy,
If I were machining your part I would blank it on a lathe and
On Monday 13 October 2014 10:01:58 andy pugh did opine
And Gene did reply:
On 13 October 2014 14:52, Dave Caroline dave.thearchiv...@gmail.com
wrote:
I dont think it is that tapered I think a plain endmill will be close
enough specially considering its age and available tools at the time
On 13 October 2014 17:55, Gene Heskett ghesk...@wdtv.com wrote:
I get the impression the ramps were cut with a straight end mill long axis
so the cutting on the face was done on the side of the mill, while the
rotary table was advanced in step.
It is very unlikely to have been done with an
On Monday 13 October 2014 10:44:27 andy pugh did opine
And Gene did reply:
Experimenting in CAD...
The obvious approach does strange things to the tips of the dogs:
https://picasaweb.google.com/lh/photo/tOjgesG_f8aS02zviyc_Q9MTjNZETYmyP
Jy0liipFm0?feat=directlink More angle to miss the tips
On 10/13/2014 09:08 AM, andy pugh wrote:
On 13 October 2014 16:55, Dave Caroline dave.thearchiv...@gmail.com wrote:
I think is one was thinking of strength of the teeth it is not
optimal, but old designs were often ner-enuf
I could use this variant:
I have a shaper that could cut those ramps fairly easily with some setup
tooling.
The rise could be done with a cam made up of a pipe cut at an angle
with a shaft/axle running up through it that is threaded into that part.
Use some die springs to hold the part down against the cam.
A couple
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