Re: [Emc-users] pushbuttons for "canned" G code?

[Gene Heskett]

On Wednesday 24 March 2021 23:02:16 Jon Elson wrote:

> Hello,
>
> I have a gadget I put together for a project at work, beagle
> bone and Machinekit.
> It is a one-axis linear positioner.  I only need to move to
> the correct positions for
> 4 samples.  So, the G-code is something like :
>
> G1 F25 X1
>
> Where the number after the X will be 0,1,2,or 3.
>
> I already have a pyvcp on it.  I'd like to add buttons
> marked 1, 2, 3 and 4, and when the user clicks
> one, the G-code is fed to the interpreter and run.  I know
> people have discussed doing things
> like this before, but I'm a little vague on how to do it.
>
> Thanks,
>
> Jon
>
See the HALUI docs Jon, then I'd probably make pyvcp buttons, I've done 
similar to that for the align and campy kits. Make the machine move so 
the camera is at the spindle position when the camera is being used as 
an edge finder, then back to the normal position once the alignment has 
been done. Haven't used it a lot, haven't found a really good camera 
yet.
>
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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)
If we desire respect for the law, we must first make the law respectable.
 - Louis D. Brandeis
Genes Web page 


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Re: [Emc-users] pushbuttons for "canned" G code?

[John Dammeyer]

Hi Jon,
> From: Jon Elson [mailto:el...@pico-systems.com]
> Hello,
> 
> I have a gadget I put together for a project at work, beagle
> bone and Machinekit.
> It is a one-axis linear positioner.  I only need to move to
> the correct positions for
> 4 samples.  So, the G-code is something like :
> 
> G1 F25 X1
> 
> Where the number after the X will be 0,1,2,or 3.
> 
> I already have a pyvcp on it.  I'd like to add buttons
> marked 1, 2, 3 and 4, and when the user clicks
> one, the G-code is fed to the interpreter and run.  I know
> people have discussed doing things
> like this before, but I'm a little vague on how to do it.
> 

I've done something like that although I ran into issues at some point.  
Haven't gotten back to it so I don't remember the problems I ran into.

However this page I think shows how you create the G code command as a MDI 
command.
http://wiki.linuxcnc.org/cgi-bin/wiki.pl?Adding_Custom_MDI_Buttons

You'd just need 4 buttons and four MDI_COMMAND0, MDI_COMMAND1, MDI_COMMAND2 and 
MDI_COMMAND3.  You can try that all on your own mill before you even get to the 
beagle.

John Dammeyer




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[Emc-users] pushbuttons for "canned" G code?

[Jon Elson]

Hello,

I have a gadget I put together for a project at work, beagle 
bone and Machinekit.
It is a one-axis linear positioner.  I only need to move to 
the correct positions for

4 samples.  So, the G-code is something like :

G1 F25 X1

Where the number after the X will be 0,1,2,or 3.

I already have a pyvcp on it.  I'd like to add buttons 
marked 1, 2, 3 and 4, and when the user clicks
one, the G-code is fed to the interpreter and run.  I know 
people have discussed doing things

like this before, but I'm a little vague on how to do it.

Thanks,

Jon


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Re: [Emc-users] Die guide post insertion/removal force

[N. Christopher Perry]

Nick,

You’re going to want to purchase new posts.  The are actually hardened and 
ground to two different diameters, undersize by a couple of tens for the 
bushings and 2-3 thou oversized for pressing into the stationary plate of the 
set.

I got mine here:  https://www.janesvilletool.com/C/156/StraightGuidePosts

N. Christopher Perry

> On Mar 24, 2021, at 3:26 PM, andy pugh  wrote:
> 
> On Wed, 24 Mar 2021 at 19:10, Nicklas SB Karlsson  wrote:
> 
>> for sheet metal bending tool but should work for the few parts I expect
>> to need. ...  bending tool will be used to make boxes
>> for my driver cards,
> 
> If I was making a sheet metal bender I would make an electromagnetic one.
> 
> http://aaybee.com.au/Magnabend/Magnabend_Homepage.html
> 
> (Note section 6 which tells you how to make one, if you don't want to
> buy a commercial one)
> 
> -- 
> 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, 1912
> 
> 
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Re: [Emc-users] Die guide post insertion/removal force

[andy pugh]

On Wed, 24 Mar 2021 at 19:10, Nicklas SB Karlsson  wrote:

> for sheet metal bending tool but should work for the few parts I expect
> to need. ...  bending tool will be used to make boxes
> for my driver cards,

If I was making a sheet metal bender I would make an electromagnetic one.

http://aaybee.com.au/Magnabend/Magnabend_Homepage.html

(Note section 6 which tells you how to make one, if you don't want to
buy a commercial one)

-- 
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, 1912


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Re: [Emc-users] Die guide post insertion/removal force

[Nicklas SB Karlsson]

Yes, and have seen this catalog but other similar company much closer. 
Are however unsure if they have correct size, need quite large and 
already a larger than enough steel plate. This one one in figure at page 
two in the middle and to the right is cheaper which should come as no 
suprise as the one to the left have a foot. Expect no difference between 
except fastening so I though it was a good idea to figure how to use the 
cheap ones.


Christopher had used a 20 ton press on 1" so I will probably try this, 
it is not to expensive, they are most certainly serial produced and sold 
in store nearby. For higher pressures they are less common and cost at 
least several times more.


Well almost in the realm of real tools, small ones is pretty cheap but 
this one is quite large and I already have steel plate. Have an old 
excentric press that hopefully work I will try use it in, the pick on 
the top I know how to screw in already checked it will into hole on 
machine. It will be my first one so I build it with cheapest parts as I 
expect it will be no good anyway and need few parts.


Found someone selling iron bars locally, S235JR or S355J2 nearby, not 
sure if there is any problem machining S355J2 nor if it is good enough 
for sheet metal bending tool but should work for the few parts I expect 
to need. EDM might come later, bending tool will be used to make boxes 
for my driver cards, right now there is a little bit of chick/egg 
problem as I need the enclosure with good heat sink to run machine on 
full power.


Regards Nicklas Karlsson


Den 2021-03-24 kl. 18:33, skrev Thomas J Powderly:

dangit , meant to reply list not just to Christopher, sorry


Hi Niklas

are you talking about whats in this picture?

or like this manufacturer?

http://www.danly.com/PDFs/DanlyIEM-CatalogDieSets.pdf


A simple die shoe set is pretty cheap ( you are in the realm of real 
tools now, not hobby stuff )


and pretty cheap means you can not do it yourself with the neccesary 
accuracy.



the purpose is usually to stamp parts,

tho you and i might use them to make a sink edm using insulated bushes 
and an old c frame machine


tomp

On 3/24/21 8:18 PM, N. Christopher Perry wrote:
I recently replaced the 1” diameter posts in a die set with a Harbor 
Freight 20 ton press.  I used most of its grunt, but it worked fine!


N. Christopher Perry


On Mar 24, 2021, at 6:31 AM, andy pugh  wrote:

On Wed, 24 Mar 2021 at 05:13, Nicklas SB Karlsson  
wrote:
Anybody have any idea about the insertion/removal force of die 
guide posts?

No.

Trying to work out what you are asking, it sounds like you might be
planning to buy a hydraulic press, but do not know what force you
need?

But if they are interference fit then it will depend on the degree of
interference, so might be quite varied.
You might be able to find rules of thumb for general interference fits
and infer your requirements from that.

--
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, 1912


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Re: [Emc-users] Die guide post insertion/removal force

[Thomas J Powderly]

dangit , meant to reply list not just to Christopher, sorry


Hi Niklas

are you talking about whats in this picture?

or like this manufacturer?

http://www.danly.com/PDFs/DanlyIEM-CatalogDieSets.pdf


A simple die shoe set is pretty cheap ( you are in the realm of real 
tools now, not hobby stuff )


and pretty cheap means you can not do it yourself with the neccesary 
accuracy.



the purpose is usually to stamp parts,

tho you and i might use them to make a sink edm using insulated bushes 
and an old c frame machine


tomp

On 3/24/21 8:18 PM, N. Christopher Perry wrote:

I recently replaced the 1” diameter posts in a die set with a Harbor Freight 20 
ton press.  I used most of its grunt, but it worked fine!

N. Christopher Perry


On Mar 24, 2021, at 6:31 AM, andy pugh  wrote:

On Wed, 24 Mar 2021 at 05:13, Nicklas SB Karlsson  wrote:

Anybody have any idea about the insertion/removal force of die guide posts?

No.

Trying to work out what you are asking, it sounds like you might be
planning to buy a hydraulic press, but do not know what force you
need?

But if they are interference fit then it will depend on the degree of
interference, so might be quite varied.
You might be able to find rules of thumb for general interference fits
and infer your requirements from that.

--
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, 1912


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Re: [Emc-users] Maybe a minimally printed harmonic drive?

[Sam Sokolik]

I have a cheap chuck that is held on with 3 cap head screws.  My plan is to
make a disk that registers the center of the faceplate and the inside lip
of the chuck. - I don't remember the exact size..  about 4.5"

On Tue, Mar 23, 2021 at 9:48 PM John Dammeyer 
wrote:

>
>
> > From: Sam Sokolik [mailto:samco...@gmail.com]
> > http://electronicsam.com/images/greenmachine/IMG_20210321_133551.jpg
> >
>
> So Sam,
> What's the diameter of the faceplate?
> And are you planning on mounting a chuck onto it?
>
> If so, all the front mount ones still need some sort of registration
> groove on the inner diameter of the mounting screws.
>
> Andy Pugh created a faceplate for his Harmonic drive that had camlock
> chuck capability.  This way he could move his 3 or 4 jaw chuck from the
> lathe to the 4th axis on the mill.
>
> In my case I have a South Bend Heavy 10L with the threaded spindle.  Short
> of modifying it with some sort of locking nut or pin to prevent reverse
> rotation off the threads, I'm not sure putting a threaded nose onto a 4th
> axis is a good idea.
>
> A smaller chuck on a faceplate that is threaded for the South bend but has
> screws and a registration groove for the 4th axis seems like an idea that
> might work.  I have 3" chucks for the Gingery Lathe but they are on 16 TPI
> threaded arbors.
>
> John Dammeyer
>
>
>
>
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Re: [Emc-users] Die guide post insertion/removal force

[N. Christopher Perry]

I recently replaced the 1” diameter posts in a die set with a Harbor Freight 20 
ton press.  I used most of its grunt, but it worked fine! 

N. Christopher Perry

> On Mar 24, 2021, at 6:31 AM, andy pugh  wrote:
> 
> On Wed, 24 Mar 2021 at 05:13, Nicklas SB Karlsson  wrote:
>> 
>> Anybody have any idea about the insertion/removal force of die guide posts?
> 
> No.
> 
> Trying to work out what you are asking, it sounds like you might be
> planning to buy a hydraulic press, but do not know what force you
> need?
> 
> But if they are interference fit then it will depend on the degree of
> interference, so might be quite varied.
> You might be able to find rules of thumb for general interference fits
> and infer your requirements from that.
> 
> -- 
> 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, 1912
> 
> 
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Re: [Emc-users] Die guide post insertion/removal force

[andy pugh]

On Wed, 24 Mar 2021 at 05:13, Nicklas SB Karlsson  wrote:
>
> Anybody have any idea about the insertion/removal force of die guide posts?

No.

Trying to work out what you are asking, it sounds like you might be
planning to buy a hydraulic press, but do not know what force you
need?

But if they are interference fit then it will depend on the degree of
interference, so might be quite varied.
You might be able to find rules of thumb for general interference fits
and infer your requirements from that.

-- 
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, 1912


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