Chinese Spindles

[Ricardoco]

Jazz do you mind if i ask why you need such high spindle speed?

[JAZZCNC]

Jazz do you mind if i ask why you need such high spindle speed?

Mainly because I do alot with softer materials like aluminium, brass using smaller diameter cutters (<6mm) and find 12-15K the best speed range regards feed rates, finish etc. Also when 3D finishing using really small multiflute ballnose cutters (<2mm) then even 20K rpm is on the edge of too slow. Same goes for V carving, engraving.!!
On the flipside I want sub 1000rpm for large fly cutters, boreing, drilling etc and full control for tapping.

[John S]

Like I said earlier in the thread I belive it would be very easy to throw lots of money at building one then still end up with a less than ideal result.? Not a route I'd like or want to take when I know for sure I can have full ATC with industry tapers, thru coolant etc for just less than a grand.!! . . . YES £1000 is lot of money but in the real spindle world it's peanuts.!!!!

This is my Ideal spindle
ATC
20K RPM
BT40 1st choice, BT30 2nd choice both ball grippers.
5KW if inc motor 50-20K rpm
thru coolant
encoder option (I want to ridged Tap)

Yes I know want a lot but that would make me a happy chappie if could happen for £1500 with motor or sub £1000 without.? Honestly dont think it's possible for less than 2K but can live in hope.!!

You are only one step away from an off the shelf VMC or router.
Once you have all this the next failing is going to be the build of the existing machine.
Who's existing machine can carry a BT40 spindle with 5Kw motor ? The high frequency spindles can't hack the whole range as below 8K they are useless on torque unless you do like the big boys and design for minimum speed.

That they do is say to themselves I need 1K minimum speed but at 1K they only have say 10% of torque available of the motor so they up the Kw of the motor just so minimum speed is covered.
Look at some of the modern 5 axis machines with 30Kw spindles, why do you need 30Kw when you never rum greater than 20mm cutters ?
It's only so there is torque available at lower speeds. Even a large motor and inverter is peanuts compared to designing and building a gearbox that can run at 20,000 rpm.

My nephews Biesse router has all you need except thu coolant and there is no way that head will fit on any of the machines I have seen on this site.
If you really need all this then forget the £1500 spindle with motor and buy a S/H Biesse

[i2i]

I thought of making a spindle, but the cost of these spindles makes it pointless.

My needs are for a milling machine rather than a router, so i have no probs on the weight or size. In fact this is replacing a bridgeport type head on a Denford Quatro so i have plenty of room.

http://www.denfordata.com/bb/viewtopic.php?f=57&t=3730

Ricardoco, if you fancy one i have two..

[Ricardoco]

I thought of making a spindle, but the cost of these spindles makes it pointless.

My needs are for a milling machine rather than a router, so i have no probs on the weight or size. In fact this is replacing a bridgeport type head on a Denford Quatro so i have plenty of room.

http://www.denfordata.com/bb/viewtopic.php?f=57&t=3730

Ricardoco, if you fancy one i have two..

OMG what are you doing to me.... Im not gonna be able to get that out of my head now.. cheers for that.. they look gorgeous....

[JAZZCNC]

You are only one step away from an off the shelf VMC or router.
Once you have all this the next failing is going to be the build of the existing machine.

Yep thats exactly what I want it for my next machine.!! It will be VMC or possibly HMC which is the latest train of thought.!! Either way it will be massive strong.!! (For DIY)

I've slowly been collecting bits, so far I've got 5x 25mm class 3 ground twin nut screws, 30mm profiled rails/bearings, 2x11Nm Mitsubishi AC servo motors/drives, 60mm ground cast Tslot tooling plate for bed. Grand spend total so far £1100 which hisn't bad to say Screws and rails are brand new.!!. . . Amazing what you drop across if your patient.
Still need more motors and few other bits but I'm getting there slowly. just keep watching for the bargains and trying to snag them before some "OLD BASTARD" does. . nearly snagged my self a pallet loader and tombstone other day but didn't happen. . .!!! That would have decided it was HMC which I'm sure it will end up being anyway.?

Dont see many spindles comming up for sale thou and have thought about buying S/H biesse type machine but not really what I'm after. Plus not seen anycheap enough to make stripping out worth it.!! Thou you never know one could pop along unexpected, but I bet you £1000000000000 it does so when I'm brassik or tax mans raped me again. .!!!!

[i2i]

a gearbox to cope with 20k, i'll give Lewis or Jensen a ring i'm sure they'll have one spare.

[JAZZCNC]

a gearbox to cope with 20k, i'll give Lewis or Jensen a ring i'm sure they'll have one spare.

Why they only go backwards. . . . . . . . . Even Lewis whinged about it off start at weekend.! . . . . Anyway I've got a spare motoX gearbox that can just about handle 20K if your stuck. Lol

[i2i]

Why they only go backwards. . . . . . . . . Even Lewis whinged about it off start at weekend.! . . . . Anyway I've got a spare motoX gearbox that can just about handle 20K if your stuck. Lol

Doesn't he just moan all the time, i don't know....kids today.

[Ricardoco]

Why they only go backwards. . . . . . . . . Even Lewis whinged about it off start at weekend.! . . . . Anyway I've got a spare motoX gearbox that can just about handle 20K if your stuck. Lol

why do we invent all these sports i ask you...