Non circular boring... (fun with Linuxcnc of course..)

[RB211]

*boggle*

mind ==blown

Somebody needs to show this to StefanG

He views this forum, that is if we haven't chased him away.
Very cool BTW.

[nickel-city-fab]

He views this forum, that is if we haven't chased him away.
Very cool BTW.

BTW did you see his new video today? Using the boring head in the mill to make spheres.

[skunkworks]

video coming... one gcode program - chamfer, hex and hole all poly-bored..

[skunkworks]

another high quality video..

[elf]

The movement reminds me of the old "Spiro-Graph" toys... makes me wonder if theres a way to duplicate that movement with some mechanism.

Easily done on a rose engine.

[rzbill]

Easily done on a rose engine.

Many thanks for that. I was not aware of those. Now I have another subject to gladly dive into.

[RB211]

BTW did you see his new video today? Using the boring head in the mill to make spheres.

Yes, very good video!

[DR]

Without reading and studying all the posts here.......

Am I correct in assuming the spindle orientation has to be coordinated with the X-Y axis motion?


This sorta reminds me of the polygon attachments on old cam operated Traub screw machines. They could "turn" squares, hex shapes,. etc on bar stock (and not using a rotary broach).

[RB211]

Without reading and studying all the posts here.......

Am I correct in assuming the spindle orientation has to be coordinated with the X-Y axis motion?


This sorta reminds me of the polygon attachments on old cam operated Traub screw machines. They could "turn" squares, hex shapes,. etc on bar stock (and not using a rotary broach).

Yes

[skunkworks]

yes - the axis is slaved with the spindle rotation and some math. so if the spindle speed raises or lowers - the motion speeds up/slows down.

(kinda like threading or rigid tapping)

sam

Without reading and studying all the posts here.......

Am I correct in assuming the spindle orientation has to be coordinated with the X-Y axis motion?


This sorta reminds me of the polygon attachments on old cam operated Traub screw machines. They could "turn" squares, hex shapes,. etc on bar stock (and not using a rotary broach).

[nickel-city-fab]

Yep the old Brown and Sharpe screw machines were similar, with cams to "program" them

[DR]

Yep the old Brown and Sharpe screw machines were similar, with cams to "program" them

The polygon attachments I'm thinking of had a rotating cutter arbor driven off the machine's main spindle at the same rpm. The polygon pattern was determined by the number of tips on the cutter. As I recall one tip made a single flat, Four tips made a square and so on. The flats weren't totally flat, kind of dished in a bit related to the cutter's diameter.

[Doozer]

Hey Skunkworks-
Maybe not the best place to post this here
but I don't care.
I really like the videos of your Kearney-Trecker Milwaukee-Matic mill.
It is a really astounding piece of machinery.
If you look under Kearney-Trecker on the VintageMachinery.Org site
there are lots of K-T literature. A few mention the Milwaukee-Matic.
As you know, it was on the forefront of NC or CNC development.
Machines like that were soooooo overbuilt mechanically, because
it was kind of an unknown variable how they would standup to use
in industry. So they were built extra heavy as not to disappoint the
customer and maybe ruin their reputation.
But also as you know, the hydraulic control system has been surpassed
by modern servos and encoders technology, and of coarse the software.

What you have done with your CNC conversion is awesome and you
started with a truly awesome base machine. There are no other machines
quite like the MilwaukeeMatics. Amazing engineering and architecture.
You have done well to preserve a piece of important industrial history
and with your modern CNC upgrade, it continues to be valuable in the
modern machine shop.

I just wanted to write this to you, to say how much I am impressed
with this machine and how great it is that you recognized the potential
of this old iron to invest your time and money in. Great job and thanks !

--Doozer

[skunkworks]

Doozer,

Thank you. We really lucked out when dad found these in the junkyard. He brought the manuals home and thought - 'I think we could make this work'

The rest is history

I am spoiled by this machine. We have matsuura that we converted. It is nice and newer - but just isn't the K&T.

sam

ps - I would love to get an EB with rotatory table option to put in the corner of my garage...

[skunkworks]

Surprised how well it worked considering what i was working with..