Oh Blimey I bought a CNC Lathe !!!!

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awemawson:
Adev that's definitely not recommended in large quantities. At the very least you need to pour the concentrate into a flowing stream of water / coolant or it will tend to float and add to your tramp oil problems by hiding in non turbulent areas. Remember that the reservoir is the base of the swarf conveyor, so there is no large accessible tank to mix into, only the upper surface of the conveyor belt. The bulk is inaccessible and below.

Now if I had had a 45 gallon drum to hand I could have mixed it in that as you suggest, but I didn't ! It is quite important to get the concentration reasonably accurate, firstly so that you know you have the right mix for your tooling and rustproofing, but also so that you can monitor it over time and know what's happening. Industrial production practice would be to measure the refractive index and acidity daily and trend it on a graph, but I'm not going that far!

Anyway MSC have done the decent thing and refunded me.

AdeV:
OK, in that case.... fill with water, turn on swarf conveyor to get good sploshing motion going, add concentrate?

Understood about the concentration - interestingly the stuff I use reckons anything from 5-10% is good, I usualy mix it 2ltrs oil to approx 23 ltrs water ( a convenient barrel full).

awemawson:
5% is usually good for grinding and that's what's in my surface and also my cylindrical grinder. As you go up in the cutting forces you need a higher concentration all the way up to 10 or 11% for heavy machining stainless steel or HT steels in the hard state.

Incidentally the swarf conveyor goes at a slow crawl, so not much stirring there !

I've been experimenting with the various canned cycles in the control - amazingly sophisticated - today's play has been around the 'roughing cycle'. You can define a finished contour on your part that is the shape your final pass with your finishing tool makes, then call up a 'roughing cycle' that makes multiple passes getting closer and closer until your finishing allowance is left.

Two slight detours on the way. Firstly it seems that although 'absolute positioning' moves in X refer to the part diameter, 'relative positioning' refers to radius :bang: so:

G01 X25.00 put the tool on 25mm diameter or actually X=12.5

whereas
G01 X0
G01 U25.00 puts the tool on 50mm diameter or actually X=50 (U being the way relative X moves are defined)

Confusing until you know, and it's nowhere in the book of words that I can find :coffee:

Second detour involved the tool setting microscope. It has specific co-ordinates stored in the control so that tool offsets can be calculated from its known position. Well they were slightly wrong so I couldn't achieve correct diameter work, until a bit of head scratching and adjustment of the pre-set location :scratch:

Next onto the threading cycles for a bit of fun :clap:

lordedmond:
Slowly slowly catchee monkey

getting there , guess you are up to full working condition now with all this posting when you should be resting

Stuart

mattinker:
I'm glad to see you onto details most of which escape me!

The end in sight, what's next!

Regards, Matthew

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