New CNC Mill on the horizon

[fvfdrums]

@Noplace.... Thanks, the gantry was based off a design Jazz (dean) put up quite a while back so can't take all the credit for that. I'm not with the machine at the mo but I'll try and take some pics when I get back.

Gotta.... I searched cable trunking. If you search chalon components on Google go to their website and then look under the cable management section its in there.

[JAZZCNC]

@Noplace.... Thanks, the gantry was based off a design Jazz (dean) put up quite a while back so can't take all the credit

YES you can take Credit because you have done my design proud so take the Bow my friend you deserve it.. .

Put an E-stop on the gantry or Machine thou because believe me when the Shit hits Fan you'll never reach that E-stop on cabinet before damage is done.!! . . Even when close to hand it's mostly done and dusted for work piece in blink of an eye but at least you have half chance of saving the tool but up there on wall you'll never get to it in time before tools is lost or work piece ripped off the Bed.!!

[GEOFFREY]

Your machine looks great. Well done. G.

[Gotty101]

Gotta.... I searched cable trunking. If you search chalon components on Google go to their website and then look under the cable management section its in there.

Thats great thanks for that.

Trev

[fvfdrums]

Dean,

Thanks for that, I love the datron machines they are great, I have not looked closely at the accessories but the coolant head you mentioned looks cool I just checked it out.

I had a word with my friend who is building this with me who also designs all the electronic wizardry in our other projects and we are going to have a crack at something similar. I have a bit of background in pneumatics so I am hoping if we put our heads together on this we could come up with a neat solution that maybe others could use as well.

so in terms of the fogless mister am I right in thinking there is an air supply that can run independantly and the air supply also feeds a pressurised container (regulated) full of coolant which has its own control valve to allow the oil to be introduced into the flow?

[Boyan Silyavski]

Air supply pressurizes at 2 bar the container which is just about right for the air flow needed, so no need for super precise separate regulator at the end, one normal regulator with filter before the container is enough. There is a second precise valve that regulates the coolant flow in the nozzle. 4mm OD tubes each are enough for the flow both for air and coolant. 0.8-1.5 mm nozzle at the end depending what exactly you want to do, i would say 1mm is perfect flow wise and control wise. Polycarbonate containers are rated 6 bars usually. the precise air flow formation depends on the outside angle + inside angle combination /of the nozzle tip/.

Hope that helps and clears the basic principles of the design.

[fvfdrums]

Thanks Silyavski, that certainly does.

I like the idea of using a system like this but the worry is still even if we are really over the top at cleaning the machine after its been used for the odd bit of hardwood are we likely to still get a build up of "woodcrete" as I shall refer to it as from now or is it likely to be far less due to there not being flood levels of coolant involved?

Certainly I will be trying to deveklop something that directs the air flow relevant to the direction the cut is going that should not be a problem at all given the projects we (the guy building with me/my business partner) have going on I believe we already have something we can just reuse for this anyway

[Boyan Silyavski]

I like the idea of using a system like this but the worry is still even if we are really over the top at cleaning the machine after its been used for the odd bit of hardwood are we likely to still get a build up of "woodcrete" as I shall refer to it as from now or is it likely to be far less due to there not being flood levels of coolant involved?

Here is a video from yesterday when we were finishing my new machine Z plate. We were going to use fly cutter but at the end decided to get lazy and drink coffee so CNC-ed it on the other mill, as its the back side so it would not be seen. Ignore the dull cutter.

Until sec 15 on the video you could see nothing, but the flow is there just enough to cool it. Then i decided to give more flow so it could be captured on the video.

For the sake of using the camera the nozzle was pointing from right to left and as you could guess cooling the back instead all, whencut was going left-right , but even like that it worked. How i know? We did not break a bit and the cut was good. Ideal is when the flow comes from our point of view, when we are in front of a mill.

Another thing i learned yesterday is that to clamp the goose neck at the dial hole on the mill is good and easy, but best would be a thin collar clamped directly at the lower part of the arbor/??/ , so it moves always with the bit and always cools where necessary.

As you see there is no mess, we were using the bigger 1.5mm nozzle at minimum adjustment. According to Jeff he could cut say 1/3 faster at least and he is using typical HSS cutters/not sharp to my standard / next time i will bring him brand new USA made micro grain carbide cutters that are ultrasharp and polished, so we could see how much we can push that thing. Anyway i soon am finishing my machine so i hope to see what happens with cooling and me taking 16k rpm, deep, fast passes in ali, checking my setup rigidity.

PS. After reading about the pulsing, yesterday had to test how good my setup leans chips. I will make more test and video but the size chips you see on the video, it blows them easily away,without any problem . tested it on the bed where there were mountains of them, 15cm away which is a longer distance than usually. So no worry there, i believe i will have no need for pulsing. Will have to check for steel.