Re: [Emc-users] Cleaning Carbide Bits -plywood gue.

[Greg Bernard]

I use oven cleaner to clean carbide router bits and saw blades. Works great.
 +++
"Anyone who believes exponential growth can go on forever in a finite world is 
either a madman or an economist."
        -Kenneth Boulding, economist
Corporations are NOT people and money is NOT speech!

  From: craig 
 To: emc-users@lists.sourceforge.net 
 Sent: Thursday, April 13, 2017 11:41 PM
 Subject: [Emc-users] Cleaning Carbide Bits -plywood gue.
   
What is the best way to clean plywood glues off small carbide router bits?

I use small carbide bits to work wood and sometimes plywood.  Mostly 
smaller than 3mm(1/8 in) bits.
Sometimes plywood glue melts onto the bits.    Cleaning them is a 
problem.  Suggestions?

Craig

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Re: [Emc-users] Cleaning Carbide Bits -plywood gue.

[Chris Albertson]

This is a common problem long before there were computers controlling the
tools.

I use 100% alcohol.   But you can buy a solvent that is specially made for
this from woodworking shops.
http://www.rockler.com/rockler-pitch-resin-remover

Either way, let the tool soak at LEAST over night.



On Thu, Apr 13, 2017 at 9:33 AM, craig  wrote:

> What is the best way to clean plywood glues off small carbide router bits?
>
> I use small carbide bits to work wood and sometimes plywood.  Mostly
> smaller than 3mm(1/8 in) bits.
> Sometimes plywood glue melts onto the bits.Cleaning them is a
> problem.  Suggestions?
>
> Craig
>
> 
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[Emc-users] Cleaning Carbide Bits -plywood gue.

[craig]

What is the best way to clean plywood glues off small carbide router bits?

I use small carbide bits to work wood and sometimes plywood.  Mostly 
smaller than 3mm(1/8 in) bits.
Sometimes plywood glue melts onto the bits.Cleaning them is a 
problem.  Suggestions?

Craig

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Re: [Emc-users] OT: analog to step/dir

[Gregg Eshelman]

Like this. Could remove the pot and switches to remote mount or connect to 
something else for control inputs. One switch is on/off, other is direction. 
Pot is speed control.
 http://www.ebay.com/itm/311203030663

On Thursday, April 13, 2017, 11:15:13 AM MDT, Jon Elson 
 wrote:On 04/13/2017 05:39 AM, andy pugh wrote:
> On 13 April 2017 at 01:53, Eric Keller  wrote:
>>    USDigital used to have something called an
>> "EPOT" but they got rid of it for some reason.
> https://tinyurl.com/ke75fzx any good?
>
No, not a digital pot, he wants a device that puts out 
step/direction in response to analog input.
I assume to take analog velocity command from some 
controller and drive a stepper motor.

Jon
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Re: [Emc-users] Milling Aluminum.

[Erik Friesen]

Free use terms = <$100,000 per year.

Non Free = you should be able to afford it.

On Thu, Apr 13, 2017 at 5:16 PM, Gregg Eshelman  wrote:

> Do test runs in wood or machinable wax or plastic. Could try spraying a
> dry graphite film on the cutter. NAPA auto parts has spray cans of that.
> Don't mill the crappy aluminum alloy.
>
> On Thursday, April 13, 2017, 8:46:03 AM MDT, Todd Zuercher <
> zuerc...@embarqmail.com> wrote:Here I go again.  Unfortunately, the
> aluminum jig was a big hit, and now they want more.  So I thought I'd take
> a crack at a trochoirdal milling path.  My first try gave mixed results.
> Looking for advice.
> My CAM software still doesn't have a trochoirdal option, so a faked it
> with a line of small circles strung together.
> I tried milling with a Vortex 1230 1/4" solid carbide up spiral @ 18000rpm
> feed rate set to 100ipm (but due to machine acceleration limits the feed
> was really only 60ipm).  The path was made with 3/8" circles with a female
> climb milling path strung together with a 0.05" step, milling 1/4" deep.
> It cut beautifully, for about an inch, then the flutes clogged and the bit
> promptly broke.  This was a dry test cut in the Mic-6 chewing gum and I
> forgot to turn on the air blast.
>
> Suggestions on where I should go from here?  Smaller step?  Lower or
> higher RPM? Larger circle (to allow faster feed)?  I know Getting the air
> blast turned on and a squirt of WD-40 will help, but will that be enough?
> Better Aluminum stock should also help, I have 3 sheets of 6061 for the
> next ones, but I would like to cut a few things from the Mic-6 scrap left
> over from the last one.
>
> 
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Re: [Emc-users] Milling Aluminum.

[Gregg Eshelman]

Do test runs in wood or machinable wax or plastic. Could try spraying a dry 
graphite film on the cutter. NAPA auto parts has spray cans of that. Don't mill 
the crappy aluminum alloy.

On Thursday, April 13, 2017, 8:46:03 AM MDT, Todd Zuercher 
 wrote:Here I go again.  Unfortunately, the aluminum 
jig was a big hit, and now they want more.  So I thought I'd take a crack at a 
trochoirdal milling path.  My first try gave mixed results.  Looking for advice.
My CAM software still doesn't have a trochoirdal option, so a faked it with a 
line of small circles strung together.
I tried milling with a Vortex 1230 1/4" solid carbide up spiral @ 18000rpm feed 
rate set to 100ipm (but due to machine acceleration limits the feed was really 
only 60ipm).  The path was made with 3/8" circles with a female climb milling 
path strung together with a 0.05" step, milling 1/4" deep.  It cut beautifully, 
for about an inch, then the flutes clogged and the bit promptly broke.  This 
was a dry test cut in the Mic-6 chewing gum and I forgot to turn on the air 
blast.  

Suggestions on where I should go from here?  Smaller step?  Lower or higher 
RPM? Larger circle (to allow faster feed)?  I know Getting the air blast turned 
on and a squirt of WD-40 will help, but will that be enough?  Better Aluminum 
stock should also help, I have 3 sheets of 6061 for the next ones, but I would 
like to cut a few things from the Mic-6 scrap left over from the last one.

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Re: [Emc-users] Milling Aluminum.

[Todd Zuercher]

No, I suck.
I've said before, we're a wood working shop.  Plasma cutters don't work real 
good on wood. ;-) Maybe a water jet or a big old laser.

- Original Message -
From: "andy pugh" 
To: "Enhanced Machine Controller (EMC)" 
Sent: Thursday, April 13, 2017 3:28:24 PM
Subject: Re: [Emc-users] Milling Aluminum.

On 13 April 2017 at 20:01, Todd  Zuercher  wrote:

>> Maybe an excuse to buy a plasma cutter?

> But it seems to be working decently now using a Vortex 5630 tool and a 
> trochoidlal cut path.

You aren't very good at this are you :-)

-- 
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] Milling Aluminum.

[andy pugh]

On 13 April 2017 at 20:01, Todd  Zuercher  wrote:

>> Maybe an excuse to buy a plasma cutter?

> But it seems to be working decently now using a Vortex 5630 tool and a 
> trochoidlal cut path.

You aren't very good at this are you :-)

-- 
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] Milling Aluminum.

[Todd Zuercher]

- Original Message -
> From: "andy pugh" 
> To: "Enhanced Machine Controller (EMC)" 
> Sent: Thursday, April 13, 2017 2:16:06 PM
> Subject: Re: [Emc-users] Milling Aluminum.
> 
> On 13 April 2017 at 18:44, Todd  Zuercher
>  wrote:
> > But I'm cutting out a 2ft x 3ft window.
> 
> Maybe an excuse to buy a plasma cutter? (Google just told me that
> plasma is good for aluminium)
> 
> 
> --
> atp

I was contemplating rough cutting them with a circular saw by hand, and then 
finishing them on the CNC, if I wasn't going to be able to get it to cut with 
the router.  But it seems to be working decently now using a Vortex 5630 tool 
and a trochoidlal cut path.

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Re: [Emc-users] Milling Aluminum.

[andy pugh]

On 13 April 2017 at 18:44, Todd  Zuercher
 wrote:
> But I'm cutting out a 2ft x 3ft window.

Maybe an excuse to buy a plasma cutter? (Google just told me that
plasma is good for aluminium)


-- 
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] Milling Aluminum.

[Todd Zuercher]

- Original Message -
> From: "Jon Elson" 
> To: "Enhanced Machine Controller (EMC)" 
> Sent: Thursday, April 13, 2017 1:22:32 PM
> Subject: Re: [Emc-users] Milling Aluminum.
> 
> On 04/13/2017 09:41 AM, Todd Zuercher wrote:
> > Here I go again.  Unfortunately, the aluminum jig was a big hit,
> > and now they want more.  So I thought I'd take a crack at a
> > trochoirdal milling path.  My first try gave mixed results.
> >  Looking for advice.
> > My CAM software still doesn't have a trochoirdal option, so a faked
> > it with a line of small circles strung together.
> > I tried milling with a Vortex 1230 1/4" solid carbide up spiral @
> > 18000rpm feed rate set to 100ipm (but due to machine acceleration
> > limits the feed was really only 60ipm).  The path was made with
> > 3/8" circles with a female climb milling path strung together with
> > a 0.05" step, milling 1/4" deep.  It cut beautifully, for about an
> > inch, then the flutes clogged and the bit promptly broke.  This
> > was a dry test cut in the Mic-6 chewing gum and I forgot to turn
> > on the air blast.
> >
> > Suggestions on where I should go from here?  Smaller step?  Lower
> > or higher RPM? Larger circle (to allow faster feed)?  I know
> > Getting the air blast turned on and a squirt of WD-40 will help,
> > but will that be enough?  Better Aluminum stock should also help,
> > I have 3 sheets of 6061 for the next ones, but I would like to cut
> > a few things from the Mic-6 scrap left over from the last one.
> >
> Well, either air blast or flood coolant (maybe even mist
> would work.)  18000 RPM and 60 IPM feed means .0017" feed
> per tooth on a 2-flute cutter, or .0008" on a 4-flute.  That
> seems awfully small. If you are running as fast as your XY
> can feed, then I'd reduce RPM by at least 2X and stay at the
> same feed.  My rule of thumb is to step down in Z equal to
> 1/2 the tool diameter.  I think you could increase the side
> step to maybe twice what you were doing, .1"
> 
> So, you are cutting out the whole interior of the part?  It
> might make sense to drill the center out with a lowly drill
> bit, then mill the final profile.  The worst thing in the
> world is "plowing" an end mill at full width through the
> stock, ie. starting at the center and then spiraling your
> way out.  That first turn is the worst.
> 
> WD-40 is pretty awful, but may be better than dry in gummy
> materials.  The whole trick it to prevent the work from
> heating. Aluminum goes from gummy to sticky mush at
> temperatures you can hold in your hand!  So, the only help
> is coolant or taking extremely light cuts at high feed rates
> to keep the heat production moving along the work.
> 6061 is better, but you still have to keep it from getting warm.
> 
> Jon
> 

But I'm cutting out a 2ft x 3ft window.  It would be silly to pocket fill that 
entire thing.

It seems I'm making good progress using the majic O-flute bit and a trochoidal 
path.

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Re: [Emc-users] OT: analog to step/dir

[Chris Albertson]

On Thu, Apr 13, 2017 at 10:10 AM, Jon Elson  wrote:

> ...he wants a device that puts out
> step/direction in response to analog input.
> I assume to take analog velocity command from some
> controller and drive a stepper motor.


This is a job for the smallest/cheapest micro controller.   An Arduino
clone could do this

The software could read an analog pin then program a count/timer to make
pulses.  Then while the chip's hardware pulse generator runs, the software
periodically reads an analog pin and re-programs the timer to go faster or
slower.

Details are things like the range of the analog signal the requires D/A
conversion resolution and how many times per second you need to read the
analog signal.


-- 

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Re: [Emc-users] Milling Aluminum.

[Jon Elson]

On 04/13/2017 10:19 AM, Kirk Wallace wrote:
> On 04/13/2017 08:04 AM, andy pugh wrote:
>> On 13 April 2017 at 15:41, Todd  Zuercher
>>  wrote:
>>> Suggestions on where I should go from here?
>> Download Fusion360 and get a real trochoidal milling path.
>>
> It should not be terribly hard to write a g-code loop to do a slot.
> There are three simple paths, straight move in slot direction, arc,
> straight move from end of arc to the end of the previous straight move,
> repeat.
>
Also, check out "milling a rectangular pocket" at 
http://pico-systems.com/gcode.html  you can download a C 
program to write the G code.  I use these all the time, in 
place of CAD/CAM.  I have some other versions that do 
ramp-down instead of plunge.

Jon

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Re: [Emc-users] Milling Aluminum.

[Jon Elson]

On 04/13/2017 09:41 AM, Todd Zuercher wrote:
> Here I go again.  Unfortunately, the aluminum jig was a big hit, and now they 
> want more.  So I thought I'd take a crack at a trochoirdal milling path.  My 
> first try gave mixed results.  Looking for advice.
> My CAM software still doesn't have a trochoirdal option, so a faked it with a 
> line of small circles strung together.
> I tried milling with a Vortex 1230 1/4" solid carbide up spiral @ 18000rpm 
> feed rate set to 100ipm (but due to machine acceleration limits the feed was 
> really only 60ipm).  The path was made with 3/8" circles with a female climb 
> milling path strung together with a 0.05" step, milling 1/4" deep.  It cut 
> beautifully, for about an inch, then the flutes clogged and the bit promptly 
> broke.  This was a dry test cut in the Mic-6 chewing gum and I forgot to turn 
> on the air blast.
>
> Suggestions on where I should go from here?  Smaller step?  Lower or higher 
> RPM? Larger circle (to allow faster feed)?  I know Getting the air blast 
> turned on and a squirt of WD-40 will help, but will that be enough?  Better 
> Aluminum stock should also help, I have 3 sheets of 6061 for the next ones, 
> but I would like to cut a few things from the Mic-6 scrap left over from the 
> last one.
>
Well, either air blast or flood coolant (maybe even mist 
would work.)  18000 RPM and 60 IPM feed means .0017" feed 
per tooth on a 2-flute cutter, or .0008" on a 4-flute.  That 
seems awfully small. If you are running as fast as your XY 
can feed, then I'd reduce RPM by at least 2X and stay at the 
same feed.  My rule of thumb is to step down in Z equal to 
1/2 the tool diameter.  I think you could increase the side 
step to maybe twice what you were doing, .1"

So, you are cutting out the whole interior of the part?  It 
might make sense to drill the center out with a lowly drill 
bit, then mill the final profile.  The worst thing in the 
world is "plowing" an end mill at full width through the 
stock, ie. starting at the center and then spiraling your 
way out.  That first turn is the worst.

WD-40 is pretty awful, but may be better than dry in gummy 
materials.  The whole trick it to prevent the work from 
heating. Aluminum goes from gummy to sticky mush at 
temperatures you can hold in your hand!  So, the only help 
is coolant or taking extremely light cuts at high feed rates 
to keep the heat production moving along the work.
6061 is better, but you still have to keep it from getting warm.

Jon

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Re: [Emc-users] OT: analog to step/dir

[Jon Elson]

On 04/13/2017 05:39 AM, andy pugh wrote:
> On 13 April 2017 at 01:53, Eric Keller  wrote:
>>USDigital used to have something called an
>> "EPOT" but they got rid of it for some reason.
> https://tinyurl.com/ke75fzx any good?
>
No, not a digital pot, he wants a device that puts out 
step/direction in response to analog input.
I assume to take analog velocity command from some 
controller and drive a stepper motor.

Jon

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Re: [Emc-users] excedrin headache number is an integer overflow

[Jon Elson]

On 04/12/2017 09:08 PM, Gene Heskett wrote:
>
> Took a while, but I found one, and the bearings are on page 119. Amazon
> sent me B-1412-OH;PB;L125's which are 1.125" OD, when the x-ref should
> have pointed at a BH-1412-OH;PB;L125, which is the correct 1.1875" OD.
Ugh, hate companies that have different products with so 
totally similar part numbers.
I had to read that 3 times before spotting the difference.
> Another 3 weeks to a month waiting on Amazon as I've started the email
> merry-go-round with them just now.  Sigh...
>
>
Well, Amazon does give refunds.  I had a washing machine 
pump that I bought from the lowest seller, an Amazon 
"partner".  It leaked right out of the box.   The Amazon 
partner wouldn't even return an email. I should have 
returned it, but we needed that washing machine fixed.  So, 
I swapped a part off the old pump and it worked for 5 
months.  Then, the coupling between the motor and impeller 
wore out.  Amazon refunded me the price plus shipping.  I 
ended up having to buy the expensive part direct from 
Sears.  Hopefully, it is made better than the cheap Amazon 
knockoff.

Jon

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Re: [Emc-users] Milling Aluminum.

[Todd Zuercher]

The higher chip load is a step in the right direction, but without lube it 
isn't enough.  Bit broke after about 1.5" of cutting, but it's flutes weren't 
jammed full of welded swarf this time. 

I switched to the O-flute bit, and that seems to be the ticket.  Single flute 
@14000rpm and 80ipm.  It is milling 1/8" deep pockets full depth happily with a 
conventional fill path with .0625" step over and minimal lube application.  

- Original Message -
From: "Jim Craig" 
To: "Enhanced Machine Controller (EMC)" 
Sent: Thursday, April 13, 2017 12:33:40 PM
Subject: Re: [Emc-users] Milling Aluminum.

Yea I thought your recipe looked pretty good. I think the missing 
ingredients are lube and chip evacuation.

My steps below are my basic guideline for setting up a cutter for 
aluminum with HSM paths. I have not broke a cutter while using those 
guidelines and flood coolant since I started using them. I may be 
conservative but I don't like breaking cutters.

Good luck and keep us informed.

On 4/13/2017 11:22 AM, Todd Zuercher wrote:
> My material is only 1/4" thick, so more tool engagement is not an option.
>
> I ran a test with 1/2" circles (1/4" loops for the tool center) and the feed 
> rate increased to 80ipm. I also decreased the step to 0.025".  The results 
> were about the same.
> With the 80ipm @18000 and the 2 flute cutter isn't the chip load a little 
> over 0.002" already.
>
> Next, I'll try pulling back the RPM to get a higher chipload. Aiming for 
> about 0.005" this time so I'll run 8000rpm.
> Then I'm going to try a single flute O-flute cutter (with a alight up cut).
>
> - Original Message -
> From: "Jim Craig" 
> To: "Enhanced Machine Controller (EMC)" 
> Sent: Thursday, April 13, 2017 11:27:42 AM
> Subject: Re: [Emc-users] Milling Aluminum.
>
> Lube is your friend. I try not to do any aluminum cutting without
> lubrication. I think your air blast and lube will get you a long way
> towards better tool life.
>
> What is the overall thickness you are cutting? If it is more than 1/4" I
> would recommend using the full cutting length of the cutter and taking a
> cut that is .1 times the cutter diameter. Calculate your feed rate based
> off that to keep tool deflection under 0.001". This will optimize
> overall tool wear and will improve productivity if you can keep the feed
> rate up enough.
>
> I am not sure that going to a larger diameter circle will help you any.
> It will increase the feed rate but it will also increase the path length
> probably not yielding a better run time. If the 60ipm is the best you
> can do slow down the RPM so you are taking at least a 0.001" per tooth
> chipload and are not rubbing creating extra heat that will increase the
> likelihood of  chip weld.
>
> My 2 cents.
>
> Also as Andy stated Fusion 360 can be had for free or cheap so I would
> try that for these types of tool paths.
>
> Jim
>
> On 4/13/2017 9:41 AM, Todd Zuercher wrote:
>> Here I go again.  Unfortunately, the aluminum jig was a big hit, and now 
>> they want more.  So I thought I'd take a crack at a trochoirdal milling 
>> path.  My first try gave mixed results.  Looking for advice.
>> My CAM software still doesn't have a trochoirdal option, so a faked it with 
>> a line of small circles strung together.
>> I tried milling with a Vortex 1230 1/4" solid carbide up spiral @ 18000rpm 
>> feed rate set to 100ipm (but due to machine acceleration limits the feed was 
>> really only 60ipm).  The path was made with 3/8" circles with a female climb 
>> milling path strung together with a 0.05" step, milling 1/4" deep.  It cut 
>> beautifully, for about an inch, then the flutes clogged and the bit promptly 
>> broke.  This was a dry test cut in the Mic-6 chewing gum and I forgot to 
>> turn on the air blast.
>>
>> Suggestions on where I should go from here?  Smaller step?  Lower or higher 
>> RPM? Larger circle (to allow faster feed)?  I know Getting the air blast 
>> turned on and a squirt of WD-40 will help, but will that be enough?  Better 
>> Aluminum stock should also help, I have 3 sheets of 6061 for the next ones, 
>> but I would like to cut a few things from the Mic-6 scrap left over from the 
>> last one.
>>
>>
>> - Original Message -
>> From: "Jon Elson" 
>> To: "Enhanced Machine Controller (EMC)" 
>> Sent: Thursday, February 23, 2017 12:54:14 PM
>> Subject: Re: [Emc-users] Milling Aluminum.
>>
>> On 02/23/2017 09:35 AM, Jim Craig wrote:
>>> Yep, you should have done a HSM slot about 3/8" wide with the 1/4"
>>> cutter and you would have had little trouble. I try to avoid a
>>> conventional full width slot in aluminum where possible. lube definitely
>>> helps or is required.
>>>
>>>
>> Yes, the hardest part of this is what I call the "plowing
>> cut", where the cutter is cutting the full width into the

Re: [Emc-users] Milling Aluminum.

[Jim Craig]

Yea I thought your recipe looked pretty good. I think the missing 
ingredients are lube and chip evacuation.

My steps below are my basic guideline for setting up a cutter for 
aluminum with HSM paths. I have not broke a cutter while using those 
guidelines and flood coolant since I started using them. I may be 
conservative but I don't like breaking cutters.

Good luck and keep us informed.

On 4/13/2017 11:22 AM, Todd Zuercher wrote:
> My material is only 1/4" thick, so more tool engagement is not an option.
>
> I ran a test with 1/2" circles (1/4" loops for the tool center) and the feed 
> rate increased to 80ipm. I also decreased the step to 0.025".  The results 
> were about the same.
> With the 80ipm @18000 and the 2 flute cutter isn't the chip load a little 
> over 0.002" already.
>
> Next, I'll try pulling back the RPM to get a higher chipload. Aiming for 
> about 0.005" this time so I'll run 8000rpm.
> Then I'm going to try a single flute O-flute cutter (with a alight up cut).
>
> - Original Message -
> From: "Jim Craig" 
> To: "Enhanced Machine Controller (EMC)" 
> Sent: Thursday, April 13, 2017 11:27:42 AM
> Subject: Re: [Emc-users] Milling Aluminum.
>
> Lube is your friend. I try not to do any aluminum cutting without
> lubrication. I think your air blast and lube will get you a long way
> towards better tool life.
>
> What is the overall thickness you are cutting? If it is more than 1/4" I
> would recommend using the full cutting length of the cutter and taking a
> cut that is .1 times the cutter diameter. Calculate your feed rate based
> off that to keep tool deflection under 0.001". This will optimize
> overall tool wear and will improve productivity if you can keep the feed
> rate up enough.
>
> I am not sure that going to a larger diameter circle will help you any.
> It will increase the feed rate but it will also increase the path length
> probably not yielding a better run time. If the 60ipm is the best you
> can do slow down the RPM so you are taking at least a 0.001" per tooth
> chipload and are not rubbing creating extra heat that will increase the
> likelihood of  chip weld.
>
> My 2 cents.
>
> Also as Andy stated Fusion 360 can be had for free or cheap so I would
> try that for these types of tool paths.
>
> Jim
>
> On 4/13/2017 9:41 AM, Todd Zuercher wrote:
>> Here I go again.  Unfortunately, the aluminum jig was a big hit, and now 
>> they want more.  So I thought I'd take a crack at a trochoirdal milling 
>> path.  My first try gave mixed results.  Looking for advice.
>> My CAM software still doesn't have a trochoirdal option, so a faked it with 
>> a line of small circles strung together.
>> I tried milling with a Vortex 1230 1/4" solid carbide up spiral @ 18000rpm 
>> feed rate set to 100ipm (but due to machine acceleration limits the feed was 
>> really only 60ipm).  The path was made with 3/8" circles with a female climb 
>> milling path strung together with a 0.05" step, milling 1/4" deep.  It cut 
>> beautifully, for about an inch, then the flutes clogged and the bit promptly 
>> broke.  This was a dry test cut in the Mic-6 chewing gum and I forgot to 
>> turn on the air blast.
>>
>> Suggestions on where I should go from here?  Smaller step?  Lower or higher 
>> RPM? Larger circle (to allow faster feed)?  I know Getting the air blast 
>> turned on and a squirt of WD-40 will help, but will that be enough?  Better 
>> Aluminum stock should also help, I have 3 sheets of 6061 for the next ones, 
>> but I would like to cut a few things from the Mic-6 scrap left over from the 
>> last one.
>>
>>
>> - Original Message -
>> From: "Jon Elson" 
>> To: "Enhanced Machine Controller (EMC)" 
>> Sent: Thursday, February 23, 2017 12:54:14 PM
>> Subject: Re: [Emc-users] Milling Aluminum.
>>
>> On 02/23/2017 09:35 AM, Jim Craig wrote:
>>> Yep, you should have done a HSM slot about 3/8" wide with the 1/4"
>>> cutter and you would have had little trouble. I try to avoid a
>>> conventional full width slot in aluminum where possible. lube definitely
>>> helps or is required.
>>>
>>>
>> Yes, the hardest part of this is what I call the "plowing
>> cut", where the cutter is cutting the full width into the
>> material. There's no great way to do this, but ramping down
>> helps, some. There might be some inventive ways to ramp
>> several times down the cut, then make a pass at constant
>> depth taking off the tops of the ramps, then repeat at next
>> depth, etc.
>> until you break through.
>>
>> I never cut slots the same width as the cutter, I always
>> somehow manage to plow the first, full-width cut, and then
>> climb mill the sides to bring the slot to the desired dimension.
>>
>> Jon
>>
>> --
>> Check out the vibrant tech community on one of the world's most
>> engaging tech sites, 

Re: [Emc-users] Milling Aluminum.

[Todd Zuercher]

Well, my machine is going as fast as it can all the time for these small loopy 
moves. (acceleration limited) Afraid how those moves are generated is going to 
make a difference.

- Original Message -
From: "andy pugh" 
To: "Enhanced Machine Controller (EMC)" 
Sent: Thursday, April 13, 2017 11:45:00 AM
Subject: Re: [Emc-users] Milling Aluminum.

On 13 April 2017 at 16:19, Todd  Zuercher
 wrote:
> Is what I did really all that different from a "real" trochoidal path?
> https://pastebin.com/nbQ1AKia.

Well, the "real" paths move at a higher speed during the non-engagement moves.

-- 
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] Milling Aluminum.

[Todd Zuercher]

My material is only 1/4" thick, so more tool engagement is not an option.

I ran a test with 1/2" circles (1/4" loops for the tool center) and the feed 
rate increased to 80ipm. I also decreased the step to 0.025".  The results were 
about the same.
With the 80ipm @18000 and the 2 flute cutter isn't the chip load a little over 
0.002" already.

Next, I'll try pulling back the RPM to get a higher chipload. Aiming for about 
0.005" this time so I'll run 8000rpm.
Then I'm going to try a single flute O-flute cutter (with a alight up cut). 

- Original Message -
From: "Jim Craig" 
To: "Enhanced Machine Controller (EMC)" 
Sent: Thursday, April 13, 2017 11:27:42 AM
Subject: Re: [Emc-users] Milling Aluminum.

Lube is your friend. I try not to do any aluminum cutting without 
lubrication. I think your air blast and lube will get you a long way 
towards better tool life.

What is the overall thickness you are cutting? If it is more than 1/4" I 
would recommend using the full cutting length of the cutter and taking a 
cut that is .1 times the cutter diameter. Calculate your feed rate based 
off that to keep tool deflection under 0.001". This will optimize 
overall tool wear and will improve productivity if you can keep the feed 
rate up enough.

I am not sure that going to a larger diameter circle will help you any. 
It will increase the feed rate but it will also increase the path length 
probably not yielding a better run time. If the 60ipm is the best you 
can do slow down the RPM so you are taking at least a 0.001" per tooth 
chipload and are not rubbing creating extra heat that will increase the 
likelihood of  chip weld.

My 2 cents.

Also as Andy stated Fusion 360 can be had for free or cheap so I would 
try that for these types of tool paths.

Jim

On 4/13/2017 9:41 AM, Todd Zuercher wrote:
> Here I go again.  Unfortunately, the aluminum jig was a big hit, and now they 
> want more.  So I thought I'd take a crack at a trochoirdal milling path.  My 
> first try gave mixed results.  Looking for advice.
> My CAM software still doesn't have a trochoirdal option, so a faked it with a 
> line of small circles strung together.
> I tried milling with a Vortex 1230 1/4" solid carbide up spiral @ 18000rpm 
> feed rate set to 100ipm (but due to machine acceleration limits the feed was 
> really only 60ipm).  The path was made with 3/8" circles with a female climb 
> milling path strung together with a 0.05" step, milling 1/4" deep.  It cut 
> beautifully, for about an inch, then the flutes clogged and the bit promptly 
> broke.  This was a dry test cut in the Mic-6 chewing gum and I forgot to turn 
> on the air blast.
>
> Suggestions on where I should go from here?  Smaller step?  Lower or higher 
> RPM? Larger circle (to allow faster feed)?  I know Getting the air blast 
> turned on and a squirt of WD-40 will help, but will that be enough?  Better 
> Aluminum stock should also help, I have 3 sheets of 6061 for the next ones, 
> but I would like to cut a few things from the Mic-6 scrap left over from the 
> last one.
>
>
> - Original Message -
> From: "Jon Elson" 
> To: "Enhanced Machine Controller (EMC)" 
> Sent: Thursday, February 23, 2017 12:54:14 PM
> Subject: Re: [Emc-users] Milling Aluminum.
>
> On 02/23/2017 09:35 AM, Jim Craig wrote:
>> Yep, you should have done a HSM slot about 3/8" wide with the 1/4"
>> cutter and you would have had little trouble. I try to avoid a
>> conventional full width slot in aluminum where possible. lube definitely
>> helps or is required.
>>
>>
> Yes, the hardest part of this is what I call the "plowing
> cut", where the cutter is cutting the full width into the
> material. There's no great way to do this, but ramping down
> helps, some. There might be some inventive ways to ramp
> several times down the cut, then make a pass at constant
> depth taking off the tops of the ramps, then repeat at next
> depth, etc.
> until you break through.
>
> I never cut slots the same width as the cutter, I always
> somehow manage to plow the first, full-width cut, and then
> climb mill the sides to bring the slot to the desired dimension.
>
> Jon
>
> --
> Check out the vibrant tech community on one of the world's most
> engaging tech sites, SlashDot.org! http://sdm.link/slashdot
> ___
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> Emc-users@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/emc-users
>
> --
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> engaging tech sites, Slashdot.org! http://sdm.link/slashdot
> ___
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> Emc-users@lists.sourceforge.net
> 

Re: [Emc-users] Milling Aluminum.

[andy pugh]

On 13 April 2017 at 16:19, Todd  Zuercher
 wrote:
> Is what I did really all that different from a "real" trochoidal path?
> https://pastebin.com/nbQ1AKia.

Well, the "real" paths move at a higher speed during the non-engagement moves.

-- 
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] Milling Aluminum.

[Jim Craig]

Lube is your friend. I try not to do any aluminum cutting without 
lubrication. I think your air blast and lube will get you a long way 
towards better tool life.

What is the overall thickness you are cutting? If it is more than 1/4" I 
would recommend using the full cutting length of the cutter and taking a 
cut that is .1 times the cutter diameter. Calculate your feed rate based 
off that to keep tool deflection under 0.001". This will optimize 
overall tool wear and will improve productivity if you can keep the feed 
rate up enough.

I am not sure that going to a larger diameter circle will help you any. 
It will increase the feed rate but it will also increase the path length 
probably not yielding a better run time. If the 60ipm is the best you 
can do slow down the RPM so you are taking at least a 0.001" per tooth 
chipload and are not rubbing creating extra heat that will increase the 
likelihood of  chip weld.

My 2 cents.

Also as Andy stated Fusion 360 can be had for free or cheap so I would 
try that for these types of tool paths.

Jim

On 4/13/2017 9:41 AM, Todd Zuercher wrote:
> Here I go again.  Unfortunately, the aluminum jig was a big hit, and now they 
> want more.  So I thought I'd take a crack at a trochoirdal milling path.  My 
> first try gave mixed results.  Looking for advice.
> My CAM software still doesn't have a trochoirdal option, so a faked it with a 
> line of small circles strung together.
> I tried milling with a Vortex 1230 1/4" solid carbide up spiral @ 18000rpm 
> feed rate set to 100ipm (but due to machine acceleration limits the feed was 
> really only 60ipm).  The path was made with 3/8" circles with a female climb 
> milling path strung together with a 0.05" step, milling 1/4" deep.  It cut 
> beautifully, for about an inch, then the flutes clogged and the bit promptly 
> broke.  This was a dry test cut in the Mic-6 chewing gum and I forgot to turn 
> on the air blast.
>
> Suggestions on where I should go from here?  Smaller step?  Lower or higher 
> RPM? Larger circle (to allow faster feed)?  I know Getting the air blast 
> turned on and a squirt of WD-40 will help, but will that be enough?  Better 
> Aluminum stock should also help, I have 3 sheets of 6061 for the next ones, 
> but I would like to cut a few things from the Mic-6 scrap left over from the 
> last one.
>
>
> - Original Message -
> From: "Jon Elson" 
> To: "Enhanced Machine Controller (EMC)" 
> Sent: Thursday, February 23, 2017 12:54:14 PM
> Subject: Re: [Emc-users] Milling Aluminum.
>
> On 02/23/2017 09:35 AM, Jim Craig wrote:
>> Yep, you should have done a HSM slot about 3/8" wide with the 1/4"
>> cutter and you would have had little trouble. I try to avoid a
>> conventional full width slot in aluminum where possible. lube definitely
>> helps or is required.
>>
>>
> Yes, the hardest part of this is what I call the "plowing
> cut", where the cutter is cutting the full width into the
> material. There's no great way to do this, but ramping down
> helps, some. There might be some inventive ways to ramp
> several times down the cut, then make a pass at constant
> depth taking off the tops of the ramps, then repeat at next
> depth, etc.
> until you break through.
>
> I never cut slots the same width as the cutter, I always
> somehow manage to plow the first, full-width cut, and then
> climb mill the sides to bring the slot to the desired dimension.
>
> Jon
>
> --
> Check out the vibrant tech community on one of the world's most
> engaging tech sites, SlashDot.org! http://sdm.link/slashdot
> ___
> Emc-users mailing list
> Emc-users@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/emc-users
>
> --
> Check out the vibrant tech community on one of the world's most
> engaging tech sites, Slashdot.org! http://sdm.link/slashdot
> ___
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> Emc-users@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/emc-users
>


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Re: [Emc-users] Milling Aluminum.

[Gene Heskett]

On Thursday 13 April 2017 10:41:37 Todd Zuercher wrote:

> Here I go again.  Unfortunately, the aluminum jig was a big hit, and
> now they want more.  So I thought I'd take a crack at a trochoirdal
> milling path.  My first try gave mixed results.  Looking for advice.
> My CAM software still doesn't have a trochoirdal option, so a faked it
> with a line of small circles strung together. I tried milling with a
> Vortex 1230 1/4" solid carbide up spiral @ 18000rpm feed rate set to
> 100ipm (but due to machine acceleration limits the feed was really
> only 60ipm).  The path was made with 3/8" circles with a female climb
> milling path strung together with a 0.05" step, milling 1/4" deep.  It
> cut beautifully, for about an inch, then the flutes clogged and the
> bit promptly broke.  This was a dry test cut in the Mic-6 chewing gum
> and I forgot to turn on the air blast.
>
> Suggestions on where I should go from here?  Smaller step?  Lower or
> higher RPM? Larger circle (to allow faster feed)?  I know Getting the
> air blast turned on and a squirt of WD-40 will help, but will that be
> enough?  Better Aluminum stock should also help, I have 3 sheets of
> 6061 for the next ones, but I would like to cut a few things from the
> Mic-6 scrap left over from the last one.
>
Smaller step? 50 thou is a bit large for bubble gum alu. Can you devise a 
way to clear the air? I'm thinking a mist of safflower oil from an 
atomizer directed at the tool would be just the ticket. It doesn't take 
much oil, but the mist from the atomizer I built, running on around 20 
psi from the shop compressor, is very fine & hangs around in the air for 
hours, getting into your lungs and making a mess of your glasses if you 
wear any. But an ounce an hour works wonders on chewing gum alu. I had 
to do that in cold weather so I didn't have the dust collector running 
and catching the mist blow-by. The idea is to seal the air away from the 
freshly cut alu, inhibiting the formation of alu oxide, which is the 
source of 95% of the cutting heat. Works better if you can arrange the 
blow so it hits the alu immediately behind the tools cutting edge, 
covering the alu before it can burn/oxidize. Doesn't need to be a flood, 
molecular thickness of the deposited oil film is all you need. Ideally, 
you should not be able to see the oil blowing away, but your finger 
should come away with oil on it if held downwind of the tool for a 
couple seconds.

> - Original Message -
> From: "Jon Elson" 
> To: "Enhanced Machine Controller (EMC)"
>  Sent: Thursday, February 23, 2017
> 12:54:14 PM
> Subject: Re: [Emc-users] Milling Aluminum.
>
> On 02/23/2017 09:35 AM, Jim Craig wrote:
> > Yep, you should have done a HSM slot about 3/8" wide with the 1/4"
> > cutter and you would have had little trouble. I try to avoid a
> > conventional full width slot in aluminum where possible. lube
> > definitely helps or is required.
>
> Yes, the hardest part of this is what I call the "plowing
> cut", where the cutter is cutting the full width into the
> material. There's no great way to do this, but ramping down
> helps, some. There might be some inventive ways to ramp
> several times down the cut, then make a pass at constant
> depth taking off the tops of the ramps, then repeat at next
> depth, etc.
> until you break through.
>
> I never cut slots the same width as the cutter, I always
> somehow manage to plow the first, full-width cut, and then
> climb mill the sides to bring the slot to the desired dimension.
>
> Jon
>
> --
> Check out the vibrant tech community on one of the world's
> most engaging tech sites, SlashDot.org! http://sdm.link/slashdot
> ___
> Emc-users mailing list
> Emc-users@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/emc-users
>
> --
> Check out the vibrant tech community on one of the world's
> most engaging tech sites, Slashdot.org! http://sdm.link/slashdot
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> 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 

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Re: [Emc-users] Milling Aluminum.

[Todd Zuercher]

I may yet do that, but then I'd have to learn how to use it... and technically 
this doesn't fall under their "free use" terms.

Is what I did really all that different from a "real" trochoidal path?
https://pastebin.com/nbQ1AKia.


- Original Message -
From: "andy pugh" 
To: "Enhanced Machine Controller (EMC)" 
Sent: Thursday, April 13, 2017 11:04:11 AM
Subject: Re: [Emc-users] Milling Aluminum.

On 13 April 2017 at 15:41, Todd  Zuercher
 wrote:
> Suggestions on where I should go from here?

Download Fusion360 and get a real trochoidal milling path.

-- 
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] Milling Aluminum.

[Kirk Wallace]

On 04/13/2017 08:04 AM, andy pugh wrote:
> On 13 April 2017 at 15:41, Todd  Zuercher
>  wrote:
>> Suggestions on where I should go from here?
>
> Download Fusion360 and get a real trochoidal milling path.
>

It should not be terribly hard to write a g-code loop to do a slot. 
There are three simple paths, straight move in slot direction, arc, 
straight move from end of arc to the end of the previous straight move, 
repeat.

-- 
Kirk Wallace
http://www.wallacecompany.com/machine_shop/
http://www.wallacecompany.com/E45/

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Re: [Emc-users] OT: analog to step/dir

[Gene Heskett]

On Thursday 13 April 2017 08:47:26 Eric Keller wrote:

> On Thu, Apr 13, 2017 at 8:29 AM, andy pugh  wrote:
> > On 13 April 2017 at 13:07, Eric Keller  wrote:
> > > I have a data acquisition device that only puts out analog
> > > voltages.
> >
> > It sounds like almost any motor would be easier to control in this
> > application than a stepper motor.
>
> Right now, I am trying a servo motor.  A lot of motors would be fine
> if I could allow them to spin, but I can't.  Analog control without
> any feedback is a problem, no doubt.

Andy is correct.  Can this job be done by an RC model servo-motor? they 
are controlled by the pulse width, and are fairly accurate, often better 
than 1 or 2 percent of the output range. Typically half a turn range.

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] Milling Aluminum.

[andy pugh]

On 13 April 2017 at 15:41, Todd  Zuercher
 wrote:
> Suggestions on where I should go from here?

Download Fusion360 and get a real trochoidal milling path.

-- 
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] OT: analog to step/dir

[Gene Heskett]

On Thursday 13 April 2017 08:07:16 Eric Keller wrote:

> On Thu, Apr 13, 2017 at 2:43 AM, Dave Caroline
> 
>
> wrote:
> > You could get an analogue in connected to stepgen.N.position-cmd to
> > do this with any scaling needed. What is the use case?
>
> I have a data acquisition device that only puts out analog voltages. 
> I want to have it control a motor to follow a fairly small magnitude
> sine wave.  The actual amplitude isn't particularly important, but it
> has to stay within set limits and be reasonably repeatable.  I have a
> fairly tight budget, and the USDigital device would have been perfect.
>  I think they used a A/D converter with some sort of logic chips to
> generate step/dir.

If your budget is money, the siggen module is free, as is a sum2. The 
siggen may be able to do it all as it has lots of control pins. The sum2 
can have its individual input gains set to small, even negative values 
in order to subtract one input from the other. The a/d converter, 
depending on the interface card, might have to be an external, costs 
money item. I've not used that input mode myself, but IIRC some of the 
firmware for the Mesa cards can do a 12 bit a/d if thats (0-4095) enough 
resolution.  I do see a possible problem in "homing" the stepper though 
if it operates more than one turn from "zero" when in operation.

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Cheers, Gene Heskett
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 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
Genes Web page 

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Re: [Emc-users] Milling Aluminum.

[Todd Zuercher]

Here I go again.  Unfortunately, the aluminum jig was a big hit, and now they 
want more.  So I thought I'd take a crack at a trochoirdal milling path.  My 
first try gave mixed results.  Looking for advice.
My CAM software still doesn't have a trochoirdal option, so a faked it with a 
line of small circles strung together.
I tried milling with a Vortex 1230 1/4" solid carbide up spiral @ 18000rpm feed 
rate set to 100ipm (but due to machine acceleration limits the feed was really 
only 60ipm).  The path was made with 3/8" circles with a female climb milling 
path strung together with a 0.05" step, milling 1/4" deep.  It cut beautifully, 
for about an inch, then the flutes clogged and the bit promptly broke.  This 
was a dry test cut in the Mic-6 chewing gum and I forgot to turn on the air 
blast.   

Suggestions on where I should go from here?  Smaller step?  Lower or higher 
RPM? Larger circle (to allow faster feed)?  I know Getting the air blast turned 
on and a squirt of WD-40 will help, but will that be enough?  Better Aluminum 
stock should also help, I have 3 sheets of 6061 for the next ones, but I would 
like to cut a few things from the Mic-6 scrap left over from the last one.


- Original Message -
From: "Jon Elson" 
To: "Enhanced Machine Controller (EMC)" 
Sent: Thursday, February 23, 2017 12:54:14 PM
Subject: Re: [Emc-users] Milling Aluminum.

On 02/23/2017 09:35 AM, Jim Craig wrote:
> Yep, you should have done a HSM slot about 3/8" wide with the 1/4"
> cutter and you would have had little trouble. I try to avoid a
> conventional full width slot in aluminum where possible. lube definitely
> helps or is required.
>
>
Yes, the hardest part of this is what I call the "plowing 
cut", where the cutter is cutting the full width into the 
material. There's no great way to do this, but ramping down 
helps, some. There might be some inventive ways to ramp 
several times down the cut, then make a pass at constant 
depth taking off the tops of the ramps, then repeat at next 
depth, etc.
until you break through.

I never cut slots the same width as the cutter, I always 
somehow manage to plow the first, full-width cut, and then 
climb mill the sides to bring the slot to the desired dimension.

Jon

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Re: [Emc-users] OT: analog to step/dir

[Eric Keller]

On Thu, Apr 13, 2017 at 8:29 AM, andy pugh  wrote:

> On 13 April 2017 at 13:07, Eric Keller  wrote:
> > I have a data acquisition device that only puts out analog voltages.
>
> It sounds like almost any motor would be easier to control in this
> application than a stepper motor.


Right now, I am trying a servo motor.  A lot of motors would be fine if I
could allow them to spin, but I can't.  Analog control without any feedback
is a problem, no doubt.
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Re: [Emc-users] OT: analog to step/dir

[andy pugh]

On 13 April 2017 at 13:07, Eric Keller  wrote:
> I have a data acquisition device that only puts out analog voltages.

It sounds like almost any motor would be easier to control in this
application than a stepper motor.

-- 
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] OT: analog to step/dir

[Eric Keller]

On Thu, Apr 13, 2017 at 2:43 AM, Dave Caroline 
wrote:

> You could get an analogue in connected to stepgen.N.position-cmd to do this
> with any scaling needed. What is the use case?
>

I have a data acquisition device that only puts out analog voltages.  I
want to have it control a motor to follow a fairly small magnitude sine
wave.  The actual amplitude isn't particularly important, but it has to
stay within set limits and be reasonably repeatable.  I have a fairly tight
budget, and the USDigital device would have been perfect.  I think they
used a A/D converter with some sort of logic chips to generate step/dir.
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Re: [Emc-users] OT: analog to step/dir

[andy pugh]

On 13 April 2017 at 01:53, Eric Keller  wrote:
>   USDigital used to have something called an
> "EPOT" but they got rid of it for some reason.

https://tinyurl.com/ke75fzx any good?

-- 
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] mesa setup

[Valerio Bellizzomi]

On Thu, 2017-04-13 at 07:04 +, giorgio foga wrote:
> Ciao Valerio,
> 
> 
> It is a new machine or used?


it is a new machine,



>  Because actually the emergency law (uni - direttiva macchine) talk about 4 
> level of emergency ... in one of these levels we talk specifically about 
> enable. In any case by the law yuo're making a new machinery, did you know 
> that? In UE retrofit understood as the mean in other part of the world no 
> longher exist. [☹]


Yes, I am building a new machine, but that machine will never leave the
lab :-)



> 
> These only for your info ... in real world many system integrators not very 
> strictly comply with CE laws on security ... in fact sometimes are overly 
> restrictive. unfortunately the risk becomes all of those who break the law. 
> Not worth it.
> 
> 
> regards
> 
> giorgio
> 
> 
> 
> Da: Valerio Bellizzomi 
> Inviato: mercoledì 12 aprile 2017 19.44
> A: Enhanced Machine Controller (EMC)
> Oggetto: Re: [Emc-users] mesa setup
> 
> Ciao Giorgio,
> my other machine was actually sold to me without the enable pin in the
> safety chain.
> 
> 
> 
> 
> 
> On Wed, 2017-04-12 at 16:19 +, giorgio foga wrote:
> > Hi Valerio,
> >
> >
> >
> > Peter suggest obviusly is right,but in our laws (CE) if there is you must 
> > use the enable pin in the safety chain  obviously if the machine is for 
> > you and only you can do as you please. I know it's something to be pedantic 
> > people ... but I think it is correct inform you since you're still under 
> > development.
> >
> >
> > regards
> >
> > giorgio
> >
> > 
> > Da: Valerio Bellizzomi 
> > Inviato: mercoledì 12 aprile 2017 10.07
> > A: Enhanced Machine Controller (EMC)
> > Oggetto: Re: [Emc-users] mesa setup
> >
> > Thanks to all,
> > now that I think to, on my other machine the driver enable is left
> > unconnected, so I think I will leave them unconnected.
> >
> > Valerio
> >
> > On Tue, 2017-04-11 at 11:53 -0700, Peter C. Wallace wrote:
> > > On Tue, 11 Apr 2017, Valerio Bellizzomi wrote:
> > >
> > > > Date: Tue, 11 Apr 2017 20:25:04 +0200
> > > > From: Valerio Bellizzomi 
> > > > Reply-To: "Enhanced Machine Controller (EMC)"
> > > > 
> > > > To: EMC Users 
> > > > Subject: [Emc-users] mesa setup
> > > >
> > > > Hello,
> > > > I am looking at the 7i76 manual and at the TB2 connector pinout (page
> > > > 5), it is evident where to connect the step and dir wires, it is less
> > > > evident where to connect the enable+ and enable- wires for each motor
> > > > driver.
> > > >
> > > > What is the usual setup ?
> > > >
> > >
> > >
> > > Normally Step drive "enable" pins are actually disable pins
> > > so the drive functions normally without these being connected
> > >
> > > In addition typically step drives are fairly safe in that unlike servo
> > > drives, they will not move without step pulses
> > >
> > > So its most common that these pins are just ignored
> > >
> > > If they are actually enable pins (powered to enable drive),
> > > they can be driven by a spare step/dir pin or 7I76 field output
> > >
> > > If your enable pins are actually disable pins (and you must power them to
> > > disable the drive), and you feel you need to disble them for things like
> > > emergency stop, perhaps the best solution is to drive them with a normally
> > > closed relay contact so the drives are disabled until the relay is 
> > > energized
> > >
> > >
> > >
> > > Peter Wallace
> > > Mesa Electronics
> > >
> > > (\__/)
> > > (='.'=) This is Bunny. Copy and paste bunny into your
> > > (")_(") signature to help him gain world domination.
> > >
> > >
> 
> 
> 
> --
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> engaging tech sites, Slashdot.org! http://sdm.link/slashdot
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> https://lists.sourceforge.net/lists/listinfo/emc-users
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> SourceForge
> lists.sourceforge.net
> This list is for users of the Enhanced Machine Controller (EMC). Topics 
> include how to obtain, install, configure, and use EMC, as well as other 
> general EMC related ...
> 
> 
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Re: [Emc-users] mesa setup

[giorgio foga]

Ciao Valerio,


It is a new machine or used? Because actually the emergency law (uni - 
direttiva macchine) talk about 4 level of emergency ... in one of these levels 
we talk specifically about enable. In any case by the law yuo're making a new 
machinery, did you know that? In UE retrofit understood as the mean in other 
part of the world no longher exist. [☹]


These only for your info ... in real world many system integrators not very 
strictly comply with CE laws on security ... in fact sometimes are overly 
restrictive. unfortunately the risk becomes all of those who break the law. Not 
worth it.


regards

giorgio



Da: Valerio Bellizzomi 
Inviato: mercoledì 12 aprile 2017 19.44
A: Enhanced Machine Controller (EMC)
Oggetto: Re: [Emc-users] mesa setup

Ciao Giorgio,
my other machine was actually sold to me without the enable pin in the
safety chain.





On Wed, 2017-04-12 at 16:19 +, giorgio foga wrote:
> Hi Valerio,
>
>
>
> Peter suggest obviusly is right,but in our laws (CE) if there is you must use 
> the enable pin in the safety chain  obviously if the machine is for you 
> and only you can do as you please. I know it's something to be pedantic 
> people ... but I think it is correct inform you since you're still under 
> development.
>
>
> regards
>
> giorgio
>
> 
> Da: Valerio Bellizzomi 
> Inviato: mercoledì 12 aprile 2017 10.07
> A: Enhanced Machine Controller (EMC)
> Oggetto: Re: [Emc-users] mesa setup
>
> Thanks to all,
> now that I think to, on my other machine the driver enable is left
> unconnected, so I think I will leave them unconnected.
>
> Valerio
>
> On Tue, 2017-04-11 at 11:53 -0700, Peter C. Wallace wrote:
> > On Tue, 11 Apr 2017, Valerio Bellizzomi wrote:
> >
> > > Date: Tue, 11 Apr 2017 20:25:04 +0200
> > > From: Valerio Bellizzomi 
> > > Reply-To: "Enhanced Machine Controller (EMC)"
> > > 
> > > To: EMC Users 
> > > Subject: [Emc-users] mesa setup
> > >
> > > Hello,
> > > I am looking at the 7i76 manual and at the TB2 connector pinout (page
> > > 5), it is evident where to connect the step and dir wires, it is less
> > > evident where to connect the enable+ and enable- wires for each motor
> > > driver.
> > >
> > > What is the usual setup ?
> > >
> >
> >
> > Normally Step drive "enable" pins are actually disable pins
> > so the drive functions normally without these being connected
> >
> > In addition typically step drives are fairly safe in that unlike servo
> > drives, they will not move without step pulses
> >
> > So its most common that these pins are just ignored
> >
> > If they are actually enable pins (powered to enable drive),
> > they can be driven by a spare step/dir pin or 7I76 field output
> >
> > If your enable pins are actually disable pins (and you must power them to
> > disable the drive), and you feel you need to disble them for things like
> > emergency stop, perhaps the best solution is to drive them with a normally
> > closed relay contact so the drives are disabled until the relay is energized
> >
> >
> >
> > Peter Wallace
> > Mesa Electronics
> >
> > (\__/)
> > (='.'=) This is Bunny. Copy and paste bunny into your
> > (")_(") signature to help him gain world domination.
> >
> >



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how to obtain, install, configure, and use EMC, as well as other general EMC 
related ...


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Re: [Emc-users] OT: analog to step/dir

[Dave Caroline]

You could get an analogue in connected to stepgen.N.position-cmd to do this
with any scaling needed. What is the use case?

Dave Caroline

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