I have one of these... cnc'ing it would be trivial.. :)
http://www.lathes.co.uk/everede/
On Sat, Apr 13, 2024 at 10:05 AM BRIAN GLACKIN
wrote:
> Probably way to late the discussion but….
>
> In the wiki under O-word example, there is an example for a “Spirograph”
> which if my maths are
Probably way to late the discussion but….
In the wiki under O-word example, there is an example for a “Spirograph”
which if my maths are right would simply be a 2d spiral.
Here’s the actual cutting snippet from the wiki.
(here is the actual cutting - I don't have any z in it yet)
o250 do
G1 X18 A-2160 F300
-Original Message-
From: John Dammeyer [mailto:jo...@autoartisans.com]
Sent: April 12, 2024 9:10 PM
To: 'Enhanced Machine Controller (EMC)'
Subject: Re: [Emc-users] Carving a spiral
-Original Message-
From: gene heskett [mailto:ghesk...@shentel.net]
Sent: April
On 4/13/24 00:11, John Dammeyer wrote:
-Original Message-
From: gene heskett [mailto:ghesk...@shentel.net]
Sent: April 12, 2024 7:40 PM
To: emc-users@lists.sourceforge.net
Subject: Re: [Emc-users] Carving a spiral
I see now. That looks like a scroll for a 3 jawed chuck, a much tighter
-users] Carving a spiral
>
> > -Original Message-
> > From: gene heskett [mailto:ghesk...@shentel.net]
> > Sent: April 12, 2024 7:40 PM
> > To: emc-users@lists.sourceforge.net
> > Subject: Re: [Emc-users] Carving a spiral
> > I see now. That l
> -Original Message-
> From: gene heskett [mailto:ghesk...@shentel.net]
> Sent: April 12, 2024 7:40 PM
> To: emc-users@lists.sourceforge.net
> Subject: Re: [Emc-users] Carving a spiral
> I see now. That looks like a scroll for a 3 jawed chuck, a much tighter
> twist
On 4/12/24 18:45, John Dammeyer wrote:
Hi Gene,
I should knock john D's problem up in openscad, might yet if he ever
gives us the whole spec so I know what he's trying to do. To me it only
needs 3 axis's as long as one is rotary. Those fast A & B's I have built
have been handier than sliced
On 4/12/24 11:30, Chris Albertson wrote:
All very true and well for someone equipt with the income and mental gear to use that chain of tools
profitably. But I'm an old Iowa farm kid, we made what we needed. The "store" was 15 miles
of horse drawn wagon over a mud road the county graded
Good morning,
I am sitting here at 70 wondering how people get along without 5 axis. A
shop here in Wichita sent me 500 parts to run. He was running them on a 4
axis mori seiki. The runtime was a little over an hour. He wanted to clear
machine time. He furnished programs, material, fixtures,
> All very true and well for someone equipt with the income and mental gear to
> use that chain of tools profitably. But I'm an old Iowa farm kid, we made
> what we needed. The "store" was 15 miles of horse drawn wagon over a mud
> road the county graded about 2x a year and all of a days
On 4/12/24 01:18, Chris Albertson wrote:
On Apr 11, 2024, at 11:49 AM, John Dammeyer wrote:
Where I'm still having trouble is understanding the compromises.
Using G02 I,J motion it's possible to specify a feed rate and spindle RPM that
remains constant regardless of the spiral diameter.
> On Apr 11, 2024, at 11:49 AM, John Dammeyer wrote:
>
> Where I'm still having trouble is understanding the compromises.
>
> Using G02 I,J motion it's possible to specify a feed rate and spindle RPM
> that remains constant regardless of the spiral diameter. This approach
> generated by
On 4/11/24 18:56, John Dammeyer wrote:
-Original Message-
From: andy pugh [mailto:bodge...@gmail.com]
Sent: April 11, 2024 3:16 PM
To: Enhanced Machine Controller (EMC)
Subject: Re: [Emc-users] Carving a spiral
On Thu, 11 Apr 2024 at 21:32, John Dammeyer
wrote:
My Harmonic drive
On 4/11/24 18:17, andy pugh wrote:
On Thu, 11 Apr 2024 at 21:32, John Dammeyer wrote:
My Harmonic drive is set up as an 'A' axis so the graphic on the screen
shows the spiral being cut along the X as the work in line with X turns.
I'd have to change my INI or HAL file to make the axis of
On 4/11/24 16:30, John Dammeyer wrote:
-Original Message-
From: gene heskett [mailto:ghesk...@shentel.net]
I only have the 4th Axis version of MECSOFT so I can't generate a fifth
axis
program cutting a spiral with the mill using the rotary table.
Why should you need a 5th axis?
> -Original Message-
> From: andy pugh [mailto:bodge...@gmail.com]
> Sent: April 11, 2024 3:16 PM
> To: Enhanced Machine Controller (EMC)
> Subject: Re: [Emc-users] Carving a spiral
>
> On Thu, 11 Apr 2024 at 21:32, John Dammeyer
> wrote:
>
> >
Inverse time mode?
G93?
Martin
From: John Dammeyer
Sent: Thursday, April 11, 2024 1:49 PM
To: 'Enhanced Machine Controller (EMC)'
Subject: Re: [Emc-users] Carving a spiral
Where I'm still having trouble is understanding the compromises.
Using G02 I,J motion
On Thu, 11 Apr 2024 at 21:32, John Dammeyer wrote:
>
> My Harmonic drive is set up as an 'A' axis so the graphic on the screen
> shows the spiral being cut along the X as the work in line with X turns.
>
> I'd have to change my INI or HAL file to make the axis of rotation of the
> harmonic
> -Original Message-
> From: gene heskett [mailto:ghesk...@shentel.net]
> > I only have the 4th Axis version of MECSOFT so I can't generate a fifth
axis
> program cutting a spiral with the mill using the rotary table.
>
> Why should you need a 5th axis? What are you going to do with
On 4/11/24 14:50, John Dammeyer wrote:
Where I'm still having trouble is understanding the compromises.
Using G02 I,J motion it's possible to specify a feed rate and spindle RPM that
remains constant regardless of the spiral diameter. This approach generated by
the CAM software does a number
On 4/11/24 13:49, Chris Albertson wrote:
On Apr 11, 2024, at 9:05 AM, gene heskett wrote:
On 4/11/24 11:38, Chris Albertson wrote:
On Apr 10, 2024, at 1:14 PM, gene heskett wrote:
On 4/10/24 13:30, Chris Albertson wrote:
Do you even need a rotory table to cut a spiral?
Now that you
Where I'm still having trouble is understanding the compromises.
Using G02 I,J motion it's possible to specify a feed rate and spindle RPM that
remains constant regardless of the spiral diameter. This approach generated by
the CAM software does a number of segments. But since a spiral is
> On Apr 11, 2024, at 9:05 AM, gene heskett wrote:
>
> On 4/11/24 11:38, Chris Albertson wrote:
>>> On Apr 10, 2024, at 1:14 PM, gene heskett wrote:
>>>
>>> On 4/10/24 13:30, Chris Albertson wrote:
Do you even need a rotory table to cut a spiral?
>>>
>>> Now that you ask, I think the
[mailto:ghesk...@shentel.net]
Sent: April 10, 2024 3:42 AM
To: emc-users@lists.sourceforge.net
Subject: Re: [Emc-users] Carving a spiral
On 4/10/24 03:37, John Dammeyer wrote:
Hi Marcus,
Here's the problem.
My Alibre CAD/Cam can produce a spiral slot in a disk using X and Y
motion.
I looked at alibre
On 4/11/24 11:38, Chris Albertson wrote:
On Apr 10, 2024, at 1:14 PM, gene heskett wrote:
On 4/10/24 13:30, Chris Albertson wrote:
Do you even need a rotory table to cut a spiral?
Now that you ask, I think the answer is probably no. Take a look at the nurbs
command G5.2 where a group of
Original Message-
>>> From: gene heskett [mailto:ghesk...@shentel.net]
>>> Sent: April 10, 2024 3:42 AM
>>> To: emc-users@lists.sourceforge.net
>>> Subject: Re: [Emc-users] Carving a spiral
>>>
>>> On 4/10/24 03:37, John Dammeyer wrote:
&g
> On Apr 10, 2024, at 1:14 PM, gene heskett wrote:
>
> On 4/10/24 13:30, Chris Albertson wrote:
>> Do you even need a rotory table to cut a spiral?
>
> Now that you ask, I think the answer is probably no. Take a look at the nurbs
> command G5.2 where a group of points describes the curve.
https://www.britannica.com/science/spiral-mathematics
Several options here, take your pick.
Should be trivial to move it from floating pt to fixed.
May have to scale to make it happy. ;-)
Dave
> On Apr 10, 2024, at 12:09 AM, gene heskett wrote:
>
> On 4/10/24 01:57, John Dammeyer wrote:
>>
.
630 Henry Street
Dalton, Ohio 44618
Phone: (330)828-2105ext. 2031
-Original Message-
From: Chris Albertson
Sent: Wednesday, April 10, 2024 4:26 PM
To: Enhanced Machine Controller (EMC)
Subject: Re: [Emc-users] Carving a spiral
[EXTERNAL EMAIL] Be sure links are safe.
> On Apr 10, 2
> On Apr 10, 2024, at 10:44 AM, Ralph Stirling via Emc-users
> wrote:
>
> Use the parametric equation of a spiral and compute it *inside* your
> g-code program.
>
> x(t) = c1 * t * cos(t) + x0
> y(t) = c2 * t * sin(t) + y0
COnceptually that is it. But do you really want to cut afull depth
On 4/10/24 14:09, Sam Sokolik wrote:
G33 for the win!
forgot that, thanks Sam.
sam
On Wed, Apr 10, 2024 at 12:31 PM Chris Albertson
wrote:
Do you even need a rotory table to cut a spiral?
On Apr 10, 2024, at 12:09 AM, gene heskett wrote:
On 4/10/24 01:57, John Dammeyer wrote:
A
On 4/10/24 13:30, Chris Albertson wrote:
Do you even need a rotory table to cut a spiral?
Now that you ask, I think the answer is probably no. Take a look at the
nurbs command G5.2 where a group of points describes the curve. Then
rotate the points about one end in polar/rectangular space.
-Original Message-
From: gene heskett [mailto:ghesk...@shentel.net]
Sent: April 10, 2024 3:42 AM
To: emc-users@lists.sourceforge.net
Subject: Re: [Emc-users] Carving a spiral
On 4/10/24 03:37, John Dammeyer wrote:
Hi Marcus,
Here's the problem.
My Alibre CAD/Cam can produce a spiral slot
On Wed, 10 Apr 2024 at 19:11, Sam Sokolik wrote:
G33 for the win!
Not a silly idea. You could arrange for an encoder to be rotated by the
rotary table any way that was convenient, then set that up as as the
"spindle" input into LinuxCNC.
Then you could simply wind the rotary table by hand.
--
/teaching/fa16_2312/handouts/parametric/ParamGraphs.pdf
for example (p. 2 and 3).
-- Ralph
From: Chris Albertson [albertson.ch...@gmail.com]
Sent: Wednesday, April 10, 2024 10:28 AM
To: Enhanced Machine Controller (EMC)
Subject: Re: [Emc-users] Carving a spiral
G33 for the win!
sam
On Wed, Apr 10, 2024 at 12:31 PM Chris Albertson
wrote:
> Do you even need a rotory table to cut a spiral?
>
> > On Apr 10, 2024, at 12:09 AM, gene heskett wrote:
> >
> > On 4/10/24 01:57, John Dammeyer wrote:
> >> A friend and I have been discussing exactly how to write
Do you even need a rotory table to cut a spiral?
> On Apr 10, 2024, at 12:09 AM, gene heskett wrote:
>
> On 4/10/24 01:57, John Dammeyer wrote:
>> A friend and I have been discussing exactly how to write the G-Code to
>> create a spiral scroll.
>> His rotary table 90:1 reduction with a 1600
On Wed, 10 Apr 2024 at 17:30, Alan Condit via Emc-users <
emc-users@lists.sourceforge.net> wrote:
>
> Here us a subroutine I wrote to cut a scroll.
> #<_xorigin>, and #<_yorigin> are the center of the scroll. Basically it
> changes the radius of the circle every ¼ turn.
This is what I was
; From: gene heskett [mailto:ghesk...@shentel.net]
> Sent: April 10, 2024 3:42 AM
> To: emc-users@lists.sourceforge.net
> Subject: Re: [Emc-users] Carving a spiral
>
> On 4/10/24 03:37, John Dammeyer wrote:
> > Hi Marcus,
> >
> > Here's the problem.
> >
&g
Hi Andy,
> -Original Message-
> From: andy pugh [mailto:bodge...@gmail.com]
> Sent: April 10, 2024 1:54 AM
> To: Enhanced Machine Controller (EMC)
> Subject: Re: [Emc-users] Carving a spiral
>
> On Wed, 10 Apr 2024 at 06:59, John Dammeyer
> wrote:
>
> >
Thanks Alan,
I'll take a look at this later today.
John
> -Original Message-
> From: Alan Condit via Emc-users [mailto:emc-users@lists.sourceforge.net]
> Sent: April 10, 2024 9:27 AM
> To: EMC-Users
> Cc: Alan Condit
> Subject: Re: [Emc-users] Carving a spiral
>
[3*#]] GE #]
G03 X0 Y[#-[3*#]]R[#-[3*#]]
o ENDIF
o IF [[# - #] GE #]
G03 X[[#-#]*[-1]] Y0 R[#-#]
o ENDIF
# = [#-#]
o ENDWHILE
G0 Z#<_close_Z>
G55
o endsub
Alan
> From: "John Dammeyer" mailto:jo...@autoartisans.com>>
> Subject: [Emc-users
rees
John
-Original Message-
From: marcus.bow...@visible.eclipse.co.uk
[mailto:marcus.bow...@visible.eclipse.co.uk]
Sent: April 10, 2024 12:00 AM
To: Enhanced Machine Controller (EMC)
Subject: Re: [Emc-users] Carving a spiral
As I recall, someone on this
On Wed, 10 Apr 2024 at 06:59, John Dammeyer wrote:
>
> Without using G2 or G3 it's really just a triangle isn't it? Move rotary
> table distance A and move X axis distance A'. Do it in small enough
> increments and you get a spiral. But I feel like I'm missing something
> really simple.
If
> -Original Message-
> From: marcus.bow...@visible.eclipse.co.uk
> [mailto:marcus.bow...@visible.eclipse.co.uk]
> Sent: April 10, 2024 12:00 AM
> To: Enhanced Machine Controller (EMC)
> Subject: Re: [Emc-users] Carving a spiral
>
> As I recall, someone on
As I recall, someone on this list posted a note or a link about how to
create a fusee for a clock (essentially a tapered spiral, running from
large diameter to smaller diameter while spiralling - rather like a
tapered woodscrew thread). Is a constant-diameter version of that what
you had in
On 4/10/24 01:57, John Dammeyer wrote:
A friend and I have been discussing exactly how to write the G-Code to
create a spiral scroll.
His rotary table 90:1 reduction with a 1600 micro-step motor could be set up
to move N steps for each step of the X axis to create the spiral. But that
approach
A friend and I have been discussing exactly how to write the G-Code to
create a spiral scroll.
His rotary table 90:1 reduction with a 1600 micro-step motor could be set up
to move N steps for each step of the X axis to create the spiral. But that
approach seems clumsy.
Say I wanted to cut a
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