Matsuura gets new life with linuxcnc

[samco]

About 50ish% done. Axis are moving, Spindle drive interfaced, Estop loop setup. So far so good. Reusing the servos, drives and VFD.



Better tuning of servos



(you can see just at the end of the last video - the estop that was just sitting on the vice fell off.. Have to get a control panel setup...)

Using mesa Ethernet interface with some smart serial boards for i/o - really cool stuff.

sam

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[mkd]

So many matsuuras out there with arcane yasnac controls. Like it.
When is your conversion kit going on the market ?

[samco]

It has been pretty painless with the servo/spindle drives working.

Some 'making of the sausage' pictures... Still have a bunch of i/o to hook up yet (and dress up).

[samco]

Also added a gear to the spindle for an encoder (easiest way we could think of)

(rigid tapping and such)

[tfuqua63]

Also added a gear to the spindle for an encoder (easiest way we could think of)

(rigid tapping and such)

Why did you have to add the encoder on the spindle did it not have any thing on it already ?
I would like to see a list of the hardware you purchased to make this happen if possible and some more pics of your cabinet.
What about power supply did you use the existing power supply ?
I must have missed it somewhere what machine is this ?

LOOKS GREAT and I really like the idea of bringing the old machines back to life probably as good or better than some of the new stuff

[samco]

There was not an encoder on the spindle. There is a resolver on the spindle motor that goes back to the vfd. (not really usable for position feedback) The gear is 69 teeth so 276 count quadrature.

We used the existing servo drives and supply as with the vfd. (all yaskawa)

For this conversion
mesa hardware
7i80 -> $169 Ethernet interface card. (interface to the computer)
7i48 -> $99 6 axis analog (6 analog outputs, 6 encoder inputs (ttl/differential)
7i73 -> $49 Pendent / control panel interface
7i69 -> $69 remote i/o interface card
7i44 -> $69 Eight Channel RS-422/485

This gives me 6 axis, 24 inputs and 22 outputs for the control panel (buttons, indicators, jog-wheels), 72 general purpose i/o. 24 on the servo drive side and 48 on the VFD side (estop, limits, tool changer, ect...)

(all realtime)

This also gives me quite a bit of expansion for the future.

This is how it is layed out.

computer -> Ethernet -> 7i80 -> 7i48
                          V
                          V  ->  24 port opto22 board
                          V
                          V  ->  7i44 -> 7i73
                                   V
                                   V  -> 7i69 -> 2x 24 port opto22 boards

Why did you have to add the encoder on the spindle did it not have any thing on it already ?
I would like to see a list of the hardware you purchased to make this happen if possible and some more pics of your cabinet.
What about power supply did you use the existing power supply ?
I must have missed it somewhere what machine is this ?

LOOKS GREAT and I really like the idea of bringing the old machines back to life probably as good or better than some of the new stuff

[samco]

It is a Mc 500v2

[tfuqua63]

Also added a gear to the spindle for an encoder (easiest way we could think of)

(rigid tapping and such)

I can see how the gear works but Are the copper pieces actually making contact how is that working ?

[samco]

They are holding gear tooth sensors... Like

ATS667LSGTN-T Allegro MicroSystems, LLC | Sensors, Transducers | DigiKey

which when positioned correctly output a nice quadrature signal

(that was 6000rpm)

[lcvette]

This is awesome stuff!! I am having a Chinese machine built currently (small vmc) and I'm researching what all I will need for running it with LinuxCNC. This is an excellent starting point to be able to see what you used to get everything connected.

I am about to order my servos and drives along with spindle servo and drives. I am terrified of ordering the wrong stuff and have been scavenging any info I can find.

Any advice you can offer regarding hardware?

Thanks ks and awesome build you have going on there!

Sent from my XT1080 using Tapatalk

[toneV8]

samco: what pc motherboard ( brand, model ) you using with mesa hardware

[samco]

The motherboard I am using is a gigabyte j1900 (I wanted 2 network card - one for the mesa 7i80)

I am running uspace (rt_preempt) which is required for the mesa ethernet cards not rtai.

something like GIGABYTE GA-J1900N-D3V Mini ITX - Newegg.com

I have had god luck with that motherboard and rt_preempt - but I remember it be ok with rtai - not stellar..

sam

[samco]

have most of the tool chain i/o hooked up. also tried rigid tapping in the air - seem like the gear tooth spindle encoder will work.

am

[Tkamsker]

Hi samco i did a Bridgeport 412 conversion to linuxcnc Nice work at the spindle Encoder you Need Index a and b to get rigid tapping to work it cost me a week to find Out -


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[samco]

working my way through the tool change logic..



sam

[Tkamsker]

Verry Nice which Route did you take ? I Had a Deep Look into pp how they did it


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[samco]

Andy wrote a carousel component which worked perfectly.

CAROUSEL

It does the carousel homing and keeping track of the pocket (cool things like shortest direction to tool)

The rest of the logic (magazine up, down, in, out, orient, collet clamp and such) is done in classic ladder.

sam

[samco]

simple program with rigid tapping. (didn't have time to try it in metal)

[samco]

The spindle taper has 30 years of wear - a 6 inch tool was around .006" out. So - we didn't have much to lose

Now it is around .0005" at 6 inches.

(the dremel was the only thing that would fit up the BT35 taper) - that we had anyway



We also took added about .0015 shim between the 2 ball nuts on the Z axis.
http://electronicsam.com/images/mats...608_185327.jpg

Control panel

http://electronicsam.com/images/mats...622_153043.jpg

[lcvette]

Looking good!