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Does the Hawiian shirt protect from stray electromagnetic radiation? :)

Mariss:

You scare me... alot!!

Thanks,
Art
www.artofcnc.ca

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It's obviously a pointless stunt as presented. At 24VDC the motor was
developing 55W and most of that energy went into accelerating and
decelerating the screw.

At 75VDC I was getting 2.5 meters/sec (100 IPS) but it was hurting
the stage by being beyond the screw's critical RPM. No video on that
because I didn't want to repeat it numerous times.

What matters is the stage is going to be equipped with rate-damped
compression spring loads next. This will be to test and run data on
the "unstallable stepper project" algorithms for when a closed-loop
stepper runs into a load beyond what it can sustain at the programmed
velocity rate.

This was all fun in videoing what the axis can comfortably do at
moderate speeds. Next comes dealing with the adaptive algorithms
which are supposed to slow the G100 down during high-speed overloads.

Mariss



--- In mach1mach2cnc@..., "nattyone960" <nattyone960@...>
wrote:

Pretty violent R&D.


--- In mach1mach2cnc@..., "Mariss Freimanis"
<mariss92705@> wrote:

Not so sure you want that:-)

In the previous run I had the G201 cranked up to 75VDC; the motor
develops 165W+ at that voltage. On the 1-TPI screw it developed

22lbs

(10kg) thrust at 10 meters/min.

It took a nice gouge out of my thumb, the kind it takes super-

glue

to

close up and stop the bleeding.

Furthermore I had a brick instead of the "action figure" as the

load.

The brick was duct-taped to the stage; it flew off and destroyed

my

PC keyboard upon the 2-G deceleration I had programmed.

I decided to play it safe one bloody thumb and and new keyboard

later

when I ran the video. I hit the mouse key to start things and it

darn

near took another bite out of me. Deleted cussing ensued.

Moral: Stay clear of fast-moving stuff unless you want to shed a
little unplanned blood.

Mariss



--- In mach1mach2cnc@..., Wayne Weedon <wayne@> wrote:

Mariss Freimanis wrote:

Hi,

Cross-posted from the geckodrive group. I thought people here

might

be interested in it.
--------------------------------------

I uploaded a short video that has an axis tooling along at

3,932

IPM.

Please go to:

Great stuff Mariss , but I think at least we should of got the

full

gory

version Swearing, Blood n all!

--
----------------------------------------------------------------

--

--

-------

Wayne M Weedon Email: wayne@
Fdos Design Poole UK
Tel +44-1202-677025 Fax +44-1202-770515 Mobile:

07774

439915

Specialists in small batch & Production Mechanical/Electrical

Engineering

----------------------------------------------------------------

--

--

-------

Pretty violent R&D.


--- In mach1mach2cnc@..., "Mariss Freimanis"
<mariss92705@...> wrote:

Not so sure you want that:-)

In the previous run I had the G201 cranked up to 75VDC; the motor
develops 165W+ at that voltage. On the 1-TPI screw it developed

22lbs

(10kg) thrust at 10 meters/min.

It took a nice gouge out of my thumb, the kind it takes super-glue

to

close up and stop the bleeding.

Furthermore I had a brick instead of the "action figure" as the

load.

The brick was duct-taped to the stage; it flew off and destroyed my
PC keyboard upon the 2-G deceleration I had programmed.

I decided to play it safe one bloody thumb and and new keyboard

later

when I ran the video. I hit the mouse key to start things and it

darn

near took another bite out of me. Deleted cussing ensued.

Moral: Stay clear of fast-moving stuff unless you want to shed a
little unplanned blood.

Mariss



--- In mach1mach2cnc@..., Wayne Weedon <wayne@> wrote:

Mariss Freimanis wrote:

Hi,

Cross-posted from the geckodrive group. I thought people here

might

be interested in it.
--------------------------------------

I uploaded a short video that has an axis tooling along at 3,932

IPM.

Please go to:

Great stuff Mariss , but I think at least we should of got the

full

gory

version Swearing, Blood n all!

--
------------------------------------------------------------------

--

-------

Wayne M Weedon Email: wayne@
Fdos Design Poole UK
Tel +44-1202-677025 Fax +44-1202-770515 Mobile: 07774

439915

Specialists in small batch & Production Mechanical/Electrical

Engineering

------------------------------------------------------------------

--

-------

Not so sure you want that:-)

In the previous run I had the G201 cranked up to 75VDC; the motor
develops 165W+ at that voltage. On the 1-TPI screw it developed 22lbs
(10kg) thrust at 10 meters/min.

It took a nice gouge out of my thumb, the kind it takes super-glue to
close up and stop the bleeding.

Furthermore I had a brick instead of the "action figure" as the load.
The brick was duct-taped to the stage; it flew off and destroyed my
PC keyboard upon the 2-G deceleration I had programmed.

I decided to play it safe one bloody thumb and and new keyboard later
when I ran the video. I hit the mouse key to start things and it darn
near took another bite out of me. Deleted cussing ensued.

Moral: Stay clear of fast-moving stuff unless you want to shed a
little unplanned blood.

Mariss



--- In mach1mach2cnc@..., Wayne Weedon <wayne@...> wrote:

Mariss Freimanis wrote:

Hi,

Cross-posted from the geckodrive group. I thought people here

might

be interested in it.
--------------------------------------

I uploaded a short video that has an axis tooling along at 3,932

IPM.

Please go to:

Great stuff Mariss , but I think at least we should of got the full

gory

version Swearing, Blood n all!

--
--------------------------------------------------------------------

-------

Wayne M Weedon Email: wayne@...
Fdos Design Poole UK
Tel +44-1202-677025 Fax +44-1202-770515 Mobile: 07774

439915

Specialists in small batch & Production Mechanical/Electrical

Engineering

--------------------------------------------------------------------

-------

Mariss Freimanis wrote:

Hi,

Cross-posted from the geckodrive group. I thought people here might be interested in it.
--------------------------------------

I uploaded a short video that has an axis tooling along at 3,932 IPM.
Please go to:

Great stuff Mariss , but I think at least we should of got the full gory version Swearing, Blood n all!

--
---------------------------------------------------------------------------
Wayne M Weedon Email: wayne@...
Fdos Design Poole UK Tel +44-1202-677025 Fax +44-1202-770515 Mobile: 07774 439915

Specialists in small batch & Production Mechanical/Electrical Engineering
---------------------------------------------------------------------------

Hi,

Cross-posted from the geckodrive group. I thought people here might
be interested in it.
--------------------------------------

I uploaded a short video that has an axis tooling along at 3,932 IPM.
Please go to:



Then pick 3900IPM.avi. Please download and save; view it from your
hard drive instead of selecting "open". This will save on bandwidth
and not irritate our webmaster.:-)

Video: 16 seconds, 1.234MB, 720 X 480 format, encoded using DivX 6.0,
no audio; had to remove it because I swore when I nearly got nicked
by the axis.

The average velocity is 51.4"/sec if accel/decel is included. The
velocity 65.535"/sec after accel, before decel. The motor is an MCG
IH230014 run in parallel at 3A/phase, 24VDC supply, PID closed-loop
on the G100 driving a stock-standard G201. The distance in each
direction is 20.000" Motor speed is 3,932.10 RPM, screw is 1"/turn,
well oiled to keep from overheating.:-)

Metric:

Avg velocity: 1.306 meters/sec. (7,836mm/min)
Peak velocity: 1.666 meters/sec. (10,000mm/min)
Distance: 0.508 meters in each direction.

I'll leave the video up one week, then I'll take it down. Enjoy.

Mariss

Jerry,

They should work OK if you have the 5 phase drivers to go with them.

Bob Campbell
Bob Campbell Designs
www.Campbelldesigns.com Mach 2/3 breakout boards
Relay boards
Spindle Speed boards
Stepper motors
Plasma Torch Height control

--- In mach1mach2cnc@..., "Paul Kelly" <tech@...> wrote:

And you couldn't use something like a THC interface?

PK

no, the essential difference being that a THC produces motion
orthogonal to the tool path, the tool path just carries on as normal.
In EDM you have to slow and even reverse the tool path as necessary.

Graham

Has anyone used the 5 phase Vexta motors and drivers with Mach 3? I assume they would work fine, but I thought I might check.

Jerry

Hi all, I have a modIo pendant with MPG on pin 14, 15 and there is
conflict with Grex encoder 5, if i power off the Grex, all work fine
but with, the value are refreshed with 0... Any ideas?
Thank you!

BTW Because if all the talk about RC Stuff I just looked at Castle
Creations Web Site after a few years. They have grown a lot and no
have a Beta Tester Program.
Maybe some of us would like to use their ESC in a non-traditional
setup might want to join this program.





--- In mach1mach2cnc@..., Peter Homann <groups@...> wrote:

Hi Hugh,

Thanks for your reply. You have answered al my questions.

Many years ago when I was playing around with RC cars, the Speed

controller I

used was an OS 19 motor. Messier than an EMC but a lot of fun

mechanically.

:-) It was what got me into machining in the first place.

I built the 1/8 scale car from scratch. I used a PCB for the

chassis to

provide the suspension.

Ah, the memories.

Hi Eric:

YEah, never remove acpi unless you KNOW its creating a problem, some motherboards need it for some drivers. All my computers are ACPI and no ill effects are seen...

Thanks,
Art
www.artofcnc.ca

Videos And Support Forums
Users Map:

Hi Johnny:

Plugin version will start to appear in about 2-3 weeks. They will quickly build form there to completion.

Yes, the Jog% shoudl slow down the jog. It does here anyway..

Thanks,
Art
www.artofcnc.ca

Videos And Support Forums
Users Map:

Hi Art,

Thanks for help. After installing Windows XP again
all is working fine now, even in 35 KHz mode ;-)
The only difference in the installation is that now i used ACPI
and the first time i disabled ACPI.
Strange heh? So also with the onboard videocard it is working
okay now...

Cheers,
Eric


--- In mach1mach2cnc@..., "elaurijsen" <elaurijsen@...> wrote:

Hi all,

I just bought a new computer for Mach3: Pentium 4 3.0 GHz HT with 512
Mb ram. I have installed Windows XP (as a standard pc, so disabled ACPI)
The LPT-port is running on 378 (=standard value)
When i run the drivertest, i get only a APIC timing constant of 50
and no pulses at all! Also i tried installing Mach2 but got the same
results...
In Device manager the pulse engines for Mach3 and Mach2 are running
correct according to Windows...

I tried disabling Hyperthreading with no result.
I tried setting the LPT-port to output only with no result.

Does someone knows what can be wrong. On my older pc everthing did run
very well (only too slow)... but it was only a Pentium 3 733 MHz...

Does anybody know what to do now?
The computer is a brandnew modern pc so that should be no problem i

think?

Thanks for your help,

Eric

Les and Hugh thanks for answering guzakaka's questions.
The Phoenix brand ESCs by Castle Creations (and I am sure others)
keep pushing the envelope. The last one I bought but did not mount
was 45A version with a surge current of c.60A.


--- In mach1mach2cnc@..., Hugh Prescott <hugh345@...>
wrote:

Greetings

One more comment on using Radio Control motors and speed controls

for

small milling spindle motors.

Remember that these motors are designed to be air cooled by the

planes

speed through the air it flys in and from the prop blast.

No experience here but I would be sure to provide a lot of cooling

to

the motor if run on a stationary system.

Rare earth magnets do strange things when they get too hot.

RC hobby propulsion systems are at best an intermittent use with

cooling

cycles, ie. when the batteries are exhausted you are going to

land / pit

stop and change batteries.

BTW From an electrical view there is not much difference between a
brushless RC motor controller and a VFD except for the power source

and

the voltage & current capacity and some of the RC brushless ESCs

now

handle 100 amps and up.



Hugh



Les Newell wrote:

An inrunner has the windings on the outside and the rotor spins

inside

them. An outrunner has a bell shaped rotor and the windings are

inside

it. This means that the majority of the casing actually rotates

so you

have to be careful to make sure nothing touches it.

An inrunner can be sealed and in general achieves high speed with
relatively low torque. An outrunner runs at lower speed but has

more

torque. This makes them popular with electric flight people as

they can

do away with having a reduction gearbox. Most r/c brushless

motors have

a KV rating. This is the speed per volt. For instance a KV of

2000 will

give approximately 14000 RPM no-load speed at 7.2V

Les

guzakaka wrote:
> Nattyone960 thank you for bring this up. Can you or someone

else

> explain to me the difference between an inrunner and an

outrunner?

> Which would be best for a spindle?
>
> Mike
>



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Art:

Should Mach 4 jog at rapid even if the feed rate percentage is set
less than 100%?

Also, can you speculate when the plugin for Mach 3 will be completed
for the Grex.

Thanks,

Johnny

Greetings

One more comment on using Radio Control motors and speed controls for small milling spindle motors.

Remember that these motors are designed to be air cooled by the planes speed through the air it flys in and from the prop blast.

No experience here but I would be sure to provide a lot of cooling to the motor if run on a stationary system.

Rare earth magnets do strange things when they get too hot.

RC hobby propulsion systems are at best an intermittent use with cooling cycles, ie. when the batteries are exhausted you are going to land / pit stop and change batteries.

BTW From an electrical view there is not much difference between a brushless RC motor controller and a VFD except for the power source and the voltage & current capacity and some of the RC brushless ESCs now handle 100 amps and up.



Hugh



Les Newell wrote:

An inrunner has the windings on the outside and the rotor spins inside them. An outrunner has a bell shaped rotor and the windings are inside it. This means that the majority of the casing actually rotates so you have to be careful to make sure nothing touches it.

An inrunner can be sealed and in general achieves high speed with relatively low torque. An outrunner runs at lower speed but has more torque. This makes them popular with electric flight people as they can do away with having a reduction gearbox. Most r/c brushless motors have a KV rating. This is the speed per volt. For instance a KV of 2000 will give approximately 14000 RPM no-load speed at 7.2V

Les

guzakaka wrote:

Hi Scott:

Send me your mach3mill.xml, that probably easier. :)


Thanks,
Art
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