What bogan is bashing together

[bogan]

Long time no update, wasn't a fan of the lack of torque with the brushless ESC and motor so I got a 3phase 1.5kw water cooled jobbie. Then took it apart and modified it for ATC.

The retention system uses the spindle motors own drive to tighten and loosen the locking nut (which will be held in place by a simple locking pin solenoid).

First I'll get the overview shots out of the way...













And a few videos:

Showing the tightening mechanism at work


and the retention force


Now the working principals.

Taper (green), toolholder and stub (bronze), locking balls (yellow), locking nut (red), and locking wedge (light blue) are the functional parts. The rest is all pretty standard stuff.

Between the Taper and locking nut is a 2mm pitch thread. The locking nut has two drive (locking) dogs which (with a pin) lock the nuts rotation to the housing but allow it to move up and down the axis. This enables the locking nut to both pull and push the locking wedge up and down the spindles axis. When the locking taper is pushed down, the forces the balls inwards, which presses the tool holder stud upwards due to the contact angle. The tapers on the tool holder stud mean when the locking wedge is removed it will push past the balls easily.

[bogan]

M900 sprocket cover for a welshman...

[bogan]

Finally got me spline shaper working, works, but need some improvements. Improvement one being a motor for the crankshaft, took a while (and some blisters) to crank em out by hand. The cutting tip needs work, didn't stay true right the way through, but not a bad first go with an angle grinder, will get some 8mm square tool steel for the next one.

[husaberg]

That's f-ing neat.
I always thought there were shaped with like a mini gear cutter.so (two sides are done at the same time)
I do worry however what Mr Singer would say with you forgetting the peddle though.


I guess this also means Bogan will be in the custom counter-shaft sprocket business as well?

[Ocean1]

Finally got me spline shaper working, works, but need some improvements. Improvement one being a motor for the crankshaft, took a while (and some blisters) to crank em out by hand. The cutting tip needs work, didn't stay true right the way through, but not a bad first go with an angle grinder, will get some 8mm square tool steel for the next one.

Very nice, good bit of kit that will serve you well over time.

You could make it more usefull in general and more riged for that job in particular by making an under-table support bearing. Means the tool load is supported both ends of the cutting path, you need to be able to demount the tool, though. Delapina used to make keyway broaching gear like that, very very handy.

You can take some of the initial contact load off the tool by chamfering the bore, also helps prevent that breakout damage on the underside eh?

[Ocean1]

I do worry however what Mr Singer would say with you forgetting the peddle though.

Would probably make quite a tidy wee broaching machine!

[carburator]

I like it!

[husaberg]

Would probably make quite a tidy wee broaching machine!

You could sew the seat cover as well on it.

[Ocean1]

You could sew the seat cover as well on it.

No!

Sewing machine for cutting metal= Blokestuff.

Sewing machine for sticking fabric together= Wimmenstuff.

[ducatilover]

That's a neat machine thingy, I always wondered how splines were done.

I'll have to get you to make me some bling gear/brake levers one day

[bogan]

Spindle Testing, works well.

http://www.youtube.com/watch?v=doVBV...ature=youtu.be

[Hugo Nougo]

Awesome dude, love the bent motox radiator, you open for work?.

[gammaguy]

Also, you think CNC is bling, wait till I get the vibrator polisher sorted

I used to know a girl who had one of those

[bogan]

Awesome dude, love the bent motox radiator, you open for work?.

Not completely, but job dependent I might be able to run some stuff through...

[bogan]

Santa brought me some spare time, so I started upgrading the electronics on my mill. Modular step drivers and a Ethernet Smoothstepper, which is pretty neat. Setup should provide a bit more torque than previous, hoping no more skipped steps.

If anyone wants a TB6560 or whatever the fuck the common thingo is called, free to a good home. 3 axis 2A 24V driver through parallel port.