Well here goes... Aluminium frame router design

[CharlieRam]

Well the pour went well and I've now painted the frame but I need an engineers straight edge to setup and check how straight my rails are. Anyone know if these can be hired? Hopefully the build will start to pick up the pace now as I've ordered lots of stuff 😁.

[CharlieRam]

The AXBB-E certainly looks nice ��

[driftspin]

The AXBB-E certainly looks nice ��

Oh yeah.

Hope it serves you well.

Keep us posted.

Grtz Bert.


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[CharlieRam]

Made some progress on the control box but ive just checked the voltage of my toroidal transformer and its 75v �� is there anything i can use to drop the voltage to 68v or do i need to find a 2 x 23v toroidal transformer?

[Clive S]

Made some progress on the control box but ive just checked the voltage of my toroidal transformer and its 75v �� is there anything i can use to drop the voltage to 68v or do i need to find a 2 x 23v toroidal transformer?

What are the windings on the one you have. generally 2 x 24v is ideal but I have used 2 x 25v many times. what is the max is the dc on your drives.

[CharlieRam]

The one i have is 2 x 25v so i was expecting more like 70v��, and the drives are the 2DM860H so can handle the voltage ok

[Doddy]

You might find the transformer has a primary rated at 220 or 230VAC and your stuffing 240 up it, with the proportionally higher secondary voltage. Under load you're going to see a reduction in terminal voltage anyway - so long as the electronics can take the peak voltage okay then I wouldn't lose any sleep on the 75V output. I have a 600W 50V toroidal that also gives me an unloaded 75VDC on the caps, and I chose the same drivers for that reason.

[Clive S]

The one i have is 2 x 25v so i was expecting more like 70v��, and the drives are the 2DM860H so can handle the voltage ok

Probably your mains voltage is on the high side and you are measuring the PS off load

I have used those drives I think they will take about 110vdc but you can also put AC into them straight from the toroidal

[CharlieRam]

You are right Clive, that was tested with no load. The drives do take upto 110v DC and upto 80AC. I didnt think about connecting the toroidal direct to the drives! Im assuming they have their own rectifiers and caps to smooth the currrent then? But i also assume the same 75v would be achieved?
I'm thinking i might test it again in the evening when demand for electricity is higher...i measured it at about 4pm on easter sunday when everyone else was probably out having a bbq!

[CharlieRam]

Well I've been busy doing the electronics and control cabinet and familiarizing myself with the AXBB motion controller, its my first one so can't compare with any others but i must say I'm impressed with it. I have completed almost all of the electronics but before I fit the motors to the machine I want to make sure the limits are fitted just in case! Is 5mm from a hard limit a good distance or do i need more? I think I may of gone a bit overkill with the cable chain too!

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