Re: [Emc-users] Fwd: Re: ER ATC tool idea

[andy pugh]

On Sat, 20 Apr 2019 at 11:47, Roland Jollivet  wrote:

> > I don't think either of us needed to model anything:
> >
> >
> > https://ch.rego-fix.com/en/productfinder?system_name[0]=ER_type[0]=toolholders_category_name[0]=Collet%20reductions

> Ok. Looks like a ball-ache to get a price so I won't bother.

I just googled the part number, and found a price.
https://www.zoro.com/rego-fix-tool-collet-reducer-er20er16-1340-in-dia-716220160/i/G0515335/
I won't be buying any.

> My idea though, was that these items are meant to be low cost. If they
> could be made easily, make 100 Nuttools (new word.) and fit every drill bit
> and cutter you'll ever need.

My objection to your design is that it seems to register mainly on the
thread rather than the taper.
I think that using off-the-shelf nuts probably makes more sense,
because they are cheaper than your design is easy to machine.

(£1.74 each if you buy 20 (4 lots of 5) from here:
https://www.ebay.co.uk/itm/143216877291

-- 
atp
"A motorcycle is a bicycle with a pandemonium attachment and is
designed for the especial use of mechanical geniuses, daredevils and
lunatics."
— George Fitch, Atlanta Constitution Newspaper, 1916


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[Emc-users] Fwd: Re: ER ATC tool idea

[Roland Jollivet]

On Sat, 20 Apr 2019 at 11:38, andy pugh  wrote:

> On Sat, 20 Apr 2019 at 02:18, Roland Jollivet 
> wrote:
> >
> > > https://a360.co/2ve9NIS
> > >
> > >
> > That's basically what I drew the first time around...
> >
> > https://ibb.co/dpwVLkB
>
> I don't think either of us needed to model anything:
>
>
> https://ch.rego-fix.com/en/productfinder?system_name[0]=ER_type[0]=toolholders_category_name[0]=Collet%20reductions
>
>
Ok. Looks like a ball-ache to get a price so I won't bother.

My idea though, was that these items are meant to be low cost. If they
could be made easily, make 100 Nuttools (new word.) and fit every drill bit
and cutter you'll ever need. If not a grubscrew, then a light press fit and
some loctite and it's done .

You want to get away from the having to work with the ER collets.
Practically and cost wise. Or maybe have a few of them for your expensive
cutters.

The second stage would be to have a cutter grinder accepting the same
Nuttool so you can re-grind the bits in situ.

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Re: [Emc-users] Fwd: Re: ER ATC tool idea

[andy pugh]

On Sat, 20 Apr 2019 at 02:18, Roland Jollivet  wrote:
>
> > https://a360.co/2ve9NIS
> >
> >
> That's basically what I drew the first time around...
>
> https://ibb.co/dpwVLkB

I don't think either of us needed to model anything:

https://ch.rego-fix.com/en/productfinder?system_name[0]=ER_type[0]=toolholders_category_name[0]=Collet%20reductions

-- 
atp
"A motorcycle is a bicycle with a pandemonium attachment and is
designed for the especial use of mechanical geniuses, daredevils and
lunatics."
— George Fitch, Atlanta Constitution Newspaper, 1916


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[Emc-users] Fwd: Re: ER ATC tool idea

[Roland Jollivet]

On Fri, 19 Apr 2019 at 17:08, andy pugh  wrote:

> On Fri, 19 Apr 2019 at 15:22, Todd Zuercher  wrote:
> >
> > I think I like the idea of a solid shrink fit collet.  You'd have to
> redesign the nose of the collet and the nut a little to fit a snap ring or
> something like that to retain the collet in the nut and make it removeable,
>
> Something along the same lines as the shrink-fit, a solid ER20
> containing an ER11 socket. (ER 25 and ER16 might work too)
>
> https://a360.co/2ve9NIS
>
>
That's basically what I drew the first time around...

https://ibb.co/dpwVLkB

The top part is not the D bit, it's part of the nut. You can see it's
thicker. But only the tip of the rod has the 8degree taper. This is to make
it easier to machine the inside geometry of the nut as one piece.  (my
geometry was not accurate though, should have looked up the correct
dimensions)

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Re: [Emc-users] Fwd: Re: ER ATC tool idea

[Sam Sokolik]

Anyone brought up craftsman quickrout?
https://youtu.be/721EBMoprnM

https://youtu.be/lYak30PHeJQ


On Fri, Apr 19, 2019, 12:08 PM Todd Zuercher  wrote:

> Actually I just remembered I actually have an example of a "standard" ER32
> nut that would work with a solid collet.  I don't know it's origin (it came
> with a used machine we bought) and I don't actually have any solid collets
> to test it with.  But the lip on the inside of the nut that a normal collet
> snaps into only goes 180° around the inside of the nut.  When the nut is
> unscrewed you can tip the collet to one side and remove it from the nut
> even with a tool inserted in it.  When tightened the tapers hold the collet
> centered and when removing them, the 180° of the lip that is there, still
> engages collet to pull it out of the spindle taper same as a normal nut.
>
> Todd Zuercher
> P. Graham Dunn Inc.
> 630 Henry Street
> Dalton, Ohio 44618
> Phone:  (330)828-2105ext. 2031
>
> -Original Message-
> From: Gene Heskett 
> Sent: Friday, April 19, 2019 12:13 PM
> To: emc-users@lists.sourceforge.net
> Subject: Re: [Emc-users] Fwd: Re: ER ATC tool idea
>
> On Friday 19 April 2019 09:47:27 Todd Zuercher wrote:
>
> > I think I like the idea of a solid shrink fit collet.  You'd have to
> > redesign the nose of the collet and the nut a little to fit a snap
> > ring or something like that to retain the collet in the nut and make
> > it removeable, but that sounds very do able.
> >
> Absolutely Todd.  Bang up idea.
>
> > Todd Zuercher
> > P. Graham Dunn Inc.
> > 630 Henry Street
> > Dalton, Ohio 44618
> > Phone:  (330)828-2105ext. 2031
> >
> > -Original Message-
> > From: TJoseph Powderly 
> > Sent: Friday, April 19, 2019 6:28 AM
> > To: emc-users 
> > Subject: [Emc-users] Fwd: Re: ER ATC tool idea
> >
> >
> >
> >
> >  Forwarded Message 
> > Subject:  Re: [Emc-users] ER ATC tool idea
> > Date: Fri, 19 Apr 2019 17:15:50 +0700
> > From: TJoseph Powderly 
> > To:   Andy Pugh 
> >
> >
> >
> > Gene,
> >
> > On 04/19/2019 06:52 AM, Andy Pugh wrote:
> > >> On 19 Apr 2019, at 00:47, Ken Strauss 
> > >> wrote: there is no obvious way that the threads would achieve that
> > >> level of concentricity.
> > >
> > > You can still register on the taper. Solid “collets” and
> > > off-the-shelf nuts seem so obvious that I am puzzled that I have
> > > never found them. It solves the tool length puzzle at a stroke.
> >
> > here's your chance to make use of that induction heater thread from a
> > while back. you could make solid collets for heat shrink tooling :-)
> > heck, they could be solid collet-nuts no concentricity problems (
> > except in manufacture , got a jig grinder ? )
> >
> > > ___ Emc-users mailing
> > > list Emc-users@lists.sourceforge.net
> > > https://lists.sourceforge.net/lists/listinfo/emc-users
> >
> > tomp
> >
> >
> > ___
> > Emc-users mailing list
> > Emc-users@lists.sourceforge.net
> > https://lists.sourceforge.net/lists/listinfo/emc-users
> >
> > ___
> > Emc-users mailing list
> > Emc-users@lists.sourceforge.net
> > https://lists.sourceforge.net/lists/listinfo/emc-users
>
>
> Cheers, Gene Heskett
> --
> "There are four boxes to be used in defense of liberty:
>  soap, ballot, jury, and ammo. Please use in that order."
> -Ed Howdershelt (Author)
> Genes Web page <http://geneslinuxbox.net:6309/gene>
>
>
>
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Re: [Emc-users] Fwd: Re: ER ATC tool idea

[Todd Zuercher]

Actually I just remembered I actually have an example of a "standard" ER32 nut 
that would work with a solid collet.  I don't know it's origin (it came with a 
used machine we bought) and I don't actually have any solid collets to test it 
with.  But the lip on the inside of the nut that a normal collet snaps into 
only goes 180° around the inside of the nut.  When the nut is unscrewed you can 
tip the collet to one side and remove it from the nut even with a tool inserted 
in it.  When tightened the tapers hold the collet centered and when removing 
them, the 180° of the lip that is there, still engages collet to pull it out of 
the spindle taper same as a normal nut.

Todd Zuercher
P. Graham Dunn Inc.
630 Henry Street 
Dalton, Ohio 44618
Phone:  (330)828-2105ext. 2031

-Original Message-
From: Gene Heskett  
Sent: Friday, April 19, 2019 12:13 PM
To: emc-users@lists.sourceforge.net
Subject: Re: [Emc-users] Fwd: Re: ER ATC tool idea

On Friday 19 April 2019 09:47:27 Todd Zuercher wrote:

> I think I like the idea of a solid shrink fit collet.  You'd have to 
> redesign the nose of the collet and the nut a little to fit a snap 
> ring or something like that to retain the collet in the nut and make 
> it removeable, but that sounds very do able.
>
Absolutely Todd.  Bang up idea.

> Todd Zuercher
> P. Graham Dunn Inc.
> 630 Henry Street
> Dalton, Ohio 44618
> Phone:  (330)828-2105ext. 2031
>
> -Original Message-
> From: TJoseph Powderly 
> Sent: Friday, April 19, 2019 6:28 AM
> To: emc-users 
> Subject: [Emc-users] Fwd: Re: ER ATC tool idea
>
>
>
>
>  Forwarded Message 
> Subject:  Re: [Emc-users] ER ATC tool idea
> Date: Fri, 19 Apr 2019 17:15:50 +0700
> From: TJoseph Powderly 
> To:   Andy Pugh 
>
>
>
> Gene,
>
> On 04/19/2019 06:52 AM, Andy Pugh wrote:
> >> On 19 Apr 2019, at 00:47, Ken Strauss 
> >> wrote: there is no obvious way that the threads would achieve that 
> >> level of concentricity.
> >
> > You can still register on the taper. Solid “collets” and 
> > off-the-shelf nuts seem so obvious that I am puzzled that I have 
> > never found them. It solves the tool length puzzle at a stroke.
>
> here's your chance to make use of that induction heater thread from a 
> while back. you could make solid collets for heat shrink tooling :-) 
> heck, they could be solid collet-nuts no concentricity problems ( 
> except in manufacture , got a jig grinder ? )
>
> > ___ Emc-users mailing 
> > list Emc-users@lists.sourceforge.net 
> > https://lists.sourceforge.net/lists/listinfo/emc-users
>
> tomp
>
>
> ___
> Emc-users mailing list
> Emc-users@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/emc-users
>
> ___
> Emc-users mailing list
> Emc-users@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/emc-users


Cheers, Gene Heskett
--
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
Genes Web page <http://geneslinuxbox.net:6309/gene>



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Re: [Emc-users] Fwd: Re: ER ATC tool idea

[Gene Heskett]

On Friday 19 April 2019 10:34:47 andy pugh wrote:

> On Fri, 19 Apr 2019 at 15:22, Todd Zuercher  
wrote:
> > I think I like the idea of a solid shrink fit collet.  You'd have to
> > redesign the nose of the collet and the nut a little to fit a snap
> > ring or something like that to retain the collet in the nut and make
> > it removeable,
>
> There are some super-slim nut designs that use the spanner itself as
> the extractor.

URL?

Cheers, Gene Heskett
-- 
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
Genes Web page 



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Re: [Emc-users] Fwd: Re: ER ATC tool idea

[Gene Heskett]

On Friday 19 April 2019 09:47:27 Todd Zuercher wrote:

> I think I like the idea of a solid shrink fit collet.  You'd have to
> redesign the nose of the collet and the nut a little to fit a snap
> ring or something like that to retain the collet in the nut and make
> it removeable, but that sounds very do able.
>
Absolutely Todd.  Bang up idea.

> Todd Zuercher
> P. Graham Dunn Inc.
> 630 Henry Street 
> Dalton, Ohio 44618
> Phone:  (330)828-2105ext. 2031
>
> -Original Message-
> From: TJoseph Powderly 
> Sent: Friday, April 19, 2019 6:28 AM
> To: emc-users 
> Subject: [Emc-users] Fwd: Re: ER ATC tool idea
>
>
>
>
>  Forwarded Message 
> Subject:  Re: [Emc-users] ER ATC tool idea
> Date: Fri, 19 Apr 2019 17:15:50 +0700
> From: TJoseph Powderly 
> To:   Andy Pugh 
>
>
>
> Gene,
>
> On 04/19/2019 06:52 AM, Andy Pugh wrote:
> >> On 19 Apr 2019, at 00:47, Ken Strauss 
> >> wrote: there is no obvious way that the threads would achieve that
> >> level of concentricity.
> >
> > You can still register on the taper. Solid “collets” and
> > off-the-shelf nuts seem so obvious that I am puzzled that I have
> > never found them. It solves the tool length puzzle at a stroke.
>
> here's your chance to make use of that induction heater thread from a
> while back. you could make solid collets for heat shrink tooling :-)
> heck, they could be solid collet-nuts no concentricity problems (
> except in manufacture , got a jig grinder ? )
>
> > ___ Emc-users mailing
> > list Emc-users@lists.sourceforge.net
> > https://lists.sourceforge.net/lists/listinfo/emc-users
>
> tomp
>
>
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>
> ___
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Cheers, Gene Heskett
-- 
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
Genes Web page <http://geneslinuxbox.net:6309/gene>



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Re: [Emc-users] Fwd: Re: ER ATC tool idea

[Jon Elson]

On 04/19/2019 09:01 AM, Ken Strauss wrote:

A number of firms manufacture solid, ER16 dimensioned, "collets" that are heat
shrunk onto cutters. I'm curious if they can be removed by quickly heating the
solid collet with an induction heater.


Yes, that's the trick, QUICKLY heat the holder, and yank the 
tool before it also heats up.
I haven't seen this for the collet-style scheme, but that 
was the idea with the solid tool holders.


Jon


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Re: [Emc-users] Fwd: Re: ER ATC tool idea

[Ken Strauss]

Ahhh. Thanks, a very simple but clever idea!

> -Original Message-
> From: andy pugh [mailto:bodge...@gmail.com]
> Sent: Friday, April 19, 2019 11:16 AM
> To: Enhanced Machine Controller (EMC)
> Subject: Re: [Emc-users] Fwd: Re: ER ATC tool idea
>
> On Fri, 19 Apr 2019 at 15:49, Ken Strauss  wrote:
> >
> > Interesting but I'm having trouble visualizing. Can you provide a link?
>
> Look for ER MS
>
> https://ch.rego-
> fix.com/en/productfinder?system_name[0]=ER_type[0]=clamping_n
> uts_and_disks_group_name[0]=ER%20MS
>
> --
> atp
> "A motorcycle is a bicycle with a pandemonium attachment and is
> designed for the especial use of mechanical geniuses, daredevils and
> lunatics."
> - George Fitch, Atlanta Constitution Newspaper, 1916
>
>
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Re: [Emc-users] Fwd: Re: ER ATC tool idea

[andy pugh]

On Fri, 19 Apr 2019 at 15:49, Ken Strauss  wrote:
>
> Interesting but I'm having trouble visualizing. Can you provide a link?

Look for ER MS

https://ch.rego-fix.com/en/productfinder?system_name[0]=ER_type[0]=clamping_nuts_and_disks_group_name[0]=ER%20MS

-- 
atp
"A motorcycle is a bicycle with a pandemonium attachment and is
designed for the especial use of mechanical geniuses, daredevils and
lunatics."
— George Fitch, Atlanta Constitution Newspaper, 1916


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Re: [Emc-users] Fwd: Re: ER ATC tool idea

[andy pugh]

On Fri, 19 Apr 2019 at 15:22, Todd Zuercher  wrote:
>
> I think I like the idea of a solid shrink fit collet.  You'd have to redesign 
> the nose of the collet and the nut a little to fit a snap ring or something 
> like that to retain the collet in the nut and make it removeable,

Something along the same lines as the shrink-fit, a solid ER20
containing an ER11 socket. (ER 25 and ER16 might work too)

https://a360.co/2ve9NIS

-- 
atp
"A motorcycle is a bicycle with a pandemonium attachment and is
designed for the especial use of mechanical geniuses, daredevils and
lunatics."
— George Fitch, Atlanta Constitution Newspaper, 1916


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Re: [Emc-users] Fwd: Re: ER ATC tool idea

[Ken Strauss]

Interesting but I'm having trouble visualizing. Can you provide a link?

> -Original Message-
> From: andy pugh [mailto:bodge...@gmail.com]
> Sent: Friday, April 19, 2019 10:35 AM
> To: Enhanced Machine Controller (EMC)
> Subject: Re: [Emc-users] Fwd: Re: ER ATC tool idea
>
> On Fri, 19 Apr 2019 at 15:22, Todd Zuercher 
> wrote:
> >
> > I think I like the idea of a solid shrink fit collet.  You'd have to 
> > redesign the
> nose of the collet and the nut a little to fit a snap ring or something like 
> that to
> retain the collet in the nut and make it removeable,
>
> There are some super-slim nut designs that use the spanner itself as
> the extractor.
>
> --
> atp
> "A motorcycle is a bicycle with a pandemonium attachment and is
> designed for the especial use of mechanical geniuses, daredevils and
> lunatics."
> - George Fitch, Atlanta Constitution Newspaper, 1916
>
>
> ___
> Emc-users mailing list
> Emc-users@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/emc-users




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Re: [Emc-users] Fwd: Re: ER ATC tool idea

[andy pugh]

On Fri, 19 Apr 2019 at 15:22, Todd Zuercher  wrote:
>
> I think I like the idea of a solid shrink fit collet.  You'd have to redesign 
> the nose of the collet and the nut a little to fit a snap ring or something 
> like that to retain the collet in the nut and make it removeable,

There are some super-slim nut designs that use the spanner itself as
the extractor.

-- 
atp
"A motorcycle is a bicycle with a pandemonium attachment and is
designed for the especial use of mechanical geniuses, daredevils and
lunatics."
— George Fitch, Atlanta Constitution Newspaper, 1916


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Re: [Emc-users] Fwd: Re: ER ATC tool idea

[Todd Zuercher]

I think I like the idea of a solid shrink fit collet.  You'd have to redesign 
the nose of the collet and the nut a little to fit a snap ring or something 
like that to retain the collet in the nut and make it removeable, but that 
sounds very do able.

Todd Zuercher
P. Graham Dunn Inc.
630 Henry Street 
Dalton, Ohio 44618
Phone:  (330)828-2105ext. 2031

-Original Message-
From: TJoseph Powderly  
Sent: Friday, April 19, 2019 6:28 AM
To: emc-users 
Subject: [Emc-users] Fwd: Re: ER ATC tool idea




 Forwarded Message 
Subject:Re: [Emc-users] ER ATC tool idea
Date:   Fri, 19 Apr 2019 17:15:50 +0700
From:   TJoseph Powderly 
To: Andy Pugh 



Gene,

On 04/19/2019 06:52 AM, Andy Pugh wrote:
>> On 19 Apr 2019, at 00:47, Ken Strauss  wrote: 
>> there is no obvious way that the threads would achieve that level of 
>> concentricity.
> You can still register on the taper. Solid “collets” and off-the-shelf 
> nuts seem so obvious that I am puzzled that I have never found them.
> It solves the tool length puzzle at a stroke. 
here's your chance to make use of that induction heater thread from a while 
back.
you could make solid collets for heat shrink tooling :-) heck, they could be 
solid collet-nuts no concentricity problems ( except in manufacture , got a jig 
grinder ? )
> ___ Emc-users mailing list 
> Emc-users@lists.sourceforge.net 
> https://lists.sourceforge.net/lists/listinfo/emc-users
tomp


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Re: [Emc-users] Fwd: Re: ER ATC tool idea

[Gene Heskett]

On Friday 19 April 2019 10:01:18 Ken Strauss wrote:

> A number of firms manufacture solid, ER16 dimensioned, "collets" that
> are heat shrunk onto cutters. I'm curious if they can be removed by
> quickly heating the solid collet with an induction heater.
>
If the extraction force was applied before the rf power, I'd think you 
could. Not much economy if its not re-usable several times.
Apply the force with an air cylinder so it would pop right out, a 
hydraulic press, if hand pumped, strikes me as being way too slow. A 
block of dry ice on the shaft should help.

> > -Original Message-
> > From: TJoseph Powderly [mailto:tjt...@gmail.com]
> > Sent: Friday, April 19, 2019 6:28 AM
> > To: emc-users
> > Subject: [Emc-users] Fwd: Re: ER ATC tool idea
> >
> >
> >
> >
> >  Forwarded Message 
> > Subject:Re: [Emc-users] ER ATC tool idea
> > Date:   Fri, 19 Apr 2019 17:15:50 +0700
> > From:   TJoseph Powderly 
> > To: Andy Pugh 
> >
> >
> >
> > Gene,
> >
> > On 04/19/2019 06:52 AM, Andy Pugh wrote:
> > >> On 19 Apr 2019, at 00:47, Ken Strauss 
> > >> wrote: there is no obvious way that the threads would achieve
> > >> that level of concentricity.
> > >
> > > You can still register on the taper. Solid "collets" and
> > > off-the-shelf nuts seem so obvious that I am puzzled that I have
> > > never found them. It solves the tool length puzzle at a stroke.
> >
> > here's your chance to make use of that induction heater thread from
> > a while back.
> > you could make solid collets for heat shrink tooling :-)
> > heck, they could be solid collet-nuts
> > no concentricity problems ( except in manufacture , got a jig
> > grinder ? )
> >
> > > ___ Emc-users mailing
> >
> > list
> >
> > > Emc-users@lists.sourceforge.net
> > > https://lists.sourceforge.net/lists/listinfo/emc-users
> >
> > tomp
> >
> >
> > ___
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Cheers, Gene Heskett
-- 
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
Genes Web page <http://geneslinuxbox.net:6309/gene>



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Re: [Emc-users] Fwd: Re: ER ATC tool idea

[Ken Strauss]

A number of firms manufacture solid, ER16 dimensioned, "collets" that are heat 
shrunk onto cutters. I'm curious if they can be removed by quickly heating the 
solid collet with an induction heater.

> -Original Message-
> From: TJoseph Powderly [mailto:tjt...@gmail.com]
> Sent: Friday, April 19, 2019 6:28 AM
> To: emc-users
> Subject: [Emc-users] Fwd: Re: ER ATC tool idea
>
>
>
>
>  Forwarded Message 
> Subject:  Re: [Emc-users] ER ATC tool idea
> Date: Fri, 19 Apr 2019 17:15:50 +0700
> From: TJoseph Powderly 
> To:   Andy Pugh 
>
>
>
> Gene,
>
> On 04/19/2019 06:52 AM, Andy Pugh wrote:
> >> On 19 Apr 2019, at 00:47, Ken Strauss  wrote:
> >> there is no obvious way that the threads would achieve that level of
> >> concentricity.
> > You can still register on the taper. Solid "collets" and off-the-shelf
> > nuts seem so obvious that I am puzzled that I have never found them.
> > It solves the tool length puzzle at a stroke.
> here's your chance to make use of that induction heater thread from a
> while back.
> you could make solid collets for heat shrink tooling :-)
> heck, they could be solid collet-nuts
> no concentricity problems ( except in manufacture , got a jig grinder ? )
> > ___ Emc-users mailing
> list
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> tomp
>
>
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Re: [Emc-users] Fwd: Re: ER ATC tool idea

[Gene Heskett]

On Friday 19 April 2019 06:27:56 TJoseph Powderly wrote:

>  Forwarded Message 
> Subject:  Re: [Emc-users] ER ATC tool idea
> Date: Fri, 19 Apr 2019 17:15:50 +0700
> From: TJoseph Powderly 
> To:   Andy Pugh 
>
>
>
> Gene,
>
> On 04/19/2019 06:52 AM, Andy Pugh wrote:
> >> On 19 Apr 2019, at 00:47, Ken Strauss 
> >> wrote: there is no obvious way that the threads would achieve that
> >> level of concentricity.
> >
> > You can still register on the taper. Solid “collets” and
> > off-the-shelf nuts seem so obvious that I am puzzled that I have
> > never found them. It solves the tool length puzzle at a stroke.
>
That it would, but if the nut is off the shelf, the face of the collet 
will need to loose some of the OD of its extractor groove, or the nut 
will need it turned away. I've not succeeded yet in making a collet, 
with a fitting tool shank already in it snap past the eccentric and 
assume its proper position in the nut. The collet must be able to flex 
ever so slightly in order to engage the extractor eccentric. And that 
leaves us looking for a way to reliably extract the solid collet should 
it decide to stick, and at the std anglesused, it will.

> here's your chance to make use of that induction heater thread from a
> while back.

Which brings up the performance of my pacemaker in the near field of one 
of those. Lets just say its not recommended.  Although I have walked 
around in the field of a 2500 watt ATU being driven at .98MHz w/o any 
ill effects. Close enough my IR thermometer, looking for hot joints, 
went totally berzerkly, reading room temp or slightly warmer parts 
at -176F. Gotta get me a more better one. :)  That one failed at about 
60" away from those air wound coils, sized for a 25k transmitter.

With the new Vector Network Analyser tool I've bought, I'll have to get 
right up in its face personal, but not while under that sort of power, 
probably well under a watt of drive to measure it and tune it correctly. 
And hope its not fouled up by other nearby (50 miles is nearby) radio 
stations.

I have found that not only am I a dying breed of engineer, one who 
actually fixes 60 yo transmitters, that all the engineers with the stuff 
to do an ATU tuneup, have already died.  Theres no longer any magic in 
saying you are a radio engineer, hasn't been in 50 years thanks to the 
FCC throwing 1st phones under the bus in the '70's. So there are not any 
youngsters with any interest in doing something like this. I can pay for 
this gizmo, doing a non-directional for 10% of what was being charged 40 
years ago, with the first 2 jobs, so why not? 

> you could make solid collets for heat shrink tooling :-)
> heck, they could be solid collet-nuts
> no concentricity problems ( except in manufacture , got a jig grinder
> ? )

No, at least nothing that could make the nuts threads in that limited 
amount of space.  I love the idea, but it would need a whole new ejector 
scheme to be invented.

Take care TomP.

Cheers, Gene Heskett
-- 
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
Genes Web page 



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[Emc-users] Fwd: Re: ER ATC tool idea

[TJoseph Powderly]

 Forwarded Message 
Subject:Re: [Emc-users] ER ATC tool idea
Date:   Fri, 19 Apr 2019 17:15:50 +0700
From:   TJoseph Powderly 
To: Andy Pugh 



Gene,

On 04/19/2019 06:52 AM, Andy Pugh wrote:
On 19 Apr 2019, at 00:47, Ken Strauss  wrote: 
there is no obvious way that the threads would achieve that level of 
concentricity. 
You can still register on the taper. Solid “collets” and off-the-shelf 
nuts seem so obvious that I am puzzled that I have never found them. 
It solves the tool length puzzle at a stroke. 

here's your chance to make use of that induction heater thread from a
while back.
you could make solid collets for heat shrink tooling :-)
heck, they could be solid collet-nuts
no concentricity problems ( except in manufacture , got a jig grinder ? )
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tomp


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