Help needed, advice on dismantelking baring holder/ballscrew

[george uk]

You'll not run this from a Genny. Gennys don't supply a stabel enough power and the Servo's will go bonkers.!

thats the info i need, is it get roundtable, could i stabilise the genny output. could you explain a bit more her please jazz so i can understand the problems.

Also I'm no electrics expert but your thinking about Inverters changing voltage is wrong, they can only put out what goes in. So 240 in 240 out, they change phase/frequency not voltage.

I will take pictures tomorrow so you can see what i mean, the extra box seem to have three large transformers ( windings ) or capacitors, and nothing else ( mabe four actually, will check tomorrow )

do have some money to spend on this but think the cost of supply 3 phase is prohibitive, i would rathewr have flexible options if available

Rotary converters will change voltage but they are quite inefficient and you'd need a bloody big bugger for this.!

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Maybe this is the wayi just want to have a look at all options.

I do have a full independent 1 phaze supply to my workshop ( flat at back of garden, ). the machine main box says 400v 3f 35a. But i dont need the full capacity that its rated for. I purchased this, not to use fully as is, but to convert into the type of machine i need. 2 high power motors on the other heads are not needed. I may not even need the hydrolics systems that drops motors/spindle/heads. as the Z is on full rails.

On the 3 phaze side, i may only need to drive 3 * 0.7kw ( i think ) servoes and drivers ( or maybe 4 ), the VDF and spindle, --- so push come to shove, thats what i need to power... plus if i can get exsess, i will use it...

From the pictures you posted it looked like the machine is likely to be used in a residential area, and that is why I mentioned noise

ha ha yes, i have had this house her more or less 18 years, my neigbours are great. Getting it dismantled to get it in was a bit of a communal neighbourly job, and my workshop, is right at the bottom of the garden, its was a proper flat, just small, so its double walls and sound proff to some extent. I have blown things up down there a few times ( literally ), its got its own enclosed garden with high brick walls.

[GEOFFREY]

It is possible to get generators that will give a stabilized pure sine wave output, but I do not know if that would be economic with such a large power output. I think that even running a rotary inverter is likely to be too much for your normal domestic supply (I once ran a 3PH 4HP saw on my normal domestic single phase supply, saw worked fine, but whole house lights flickered on saw start up and I figured that the rest of my street that were on the same phase probably had the same problem!!!). Are you sure your Z axis is hydraulic? My machine has an air ram to counter balance the spindle and the auxiliary drilling heads have pneumatic plunge. The main Z axis has profiled rails and a ballscrew.Whilst I generally think "if it aint broke, don't fix it", as your usage seems to be very specialist I wonder if you would indeed be better off taking advantage of the super strong build quality of your machine mechanically and completely reconfigure the electronics to suit single phase, although that may mean downgrading the spindle power. I am glad to hear that you have good neighbours, moving that machine to the flat at the bottom of your site must have been quite difficult. G.

[EddyCurrent]

I wonder if you would indeed be better off taking advantage of the super strong build qualityof your machine mechanically and completely configure the electronics to suit single phase, although that may mean downgrading the spindle power.

That's the angle I was coming from in my earlier post.
Photos are going to be a must on this one I think.