Initial design advise wanted

[driftspin]

Hmmm initial design is in post 1

Verstuurd vanaf mijn SM-G7102 met Tapatalk

[Clive S]

Hmmm initial design is in post 1

Verstuurd vanaf mijn SM-G7102 met Tapatalk

Yes but is that the design with the extra bracing you want to put on?

[driftspin]

Yes but is that the design with the extra bracing you want to put on?

Clive eh no, the initial gantry design is 65 KG with no extra bracing (80x120x4). The profile used is 940mm between the linear blocks.




The profiles on the gantrysides will have inserts so the m5 bolts can still be reached but sides ways flex is stopped.

Maybe i need to brace the Z slide on the sides ... aluminum can be flexi i heard.


What i am thinking about is maybe step up the gantrybeam to 120x100(or120x120)x5mm .... the linear rail wil be mounted close to the edge of the profile, for maximum stifness.
It will also generate some extra space for cable management, i have to look in to that too for the long axis also.








Some diagonals in the legs. maybe panel icw kabinets.. to be determined.
Filling the Highlighted parts with sand may do some good anti vibration and ringing?

[driftspin]

Electronics ... headache, questions...

Steering in the direction of 65volt dc PSU, 80volt drives 500 Watts or so will do....
And will keep me on track building a reliable machine...

But....
I dont want to go OTT, but dont want to under engineer either.

So after reading a lot of stuff i still can`t decide what voltage PSU/Drivers i would need to run my machine well.
Online-electronics-kits all list 36volt-PSU and 50volt dirers, that is confusing.

So here are a few questions.

The best guestimate i have for the total moving weight of the gantry is about 65-70KG
(including steppers, rail+blocks z axis 2.2kw spindle, steel, alu plate etc)

The best guestimate i have for the total moving weight Y+Z = +/-35 Kg.

The best guestimate i have for the total moving weight Z = +/-20 Kg.

X/Y 2:1 stepper : 1610 Ballscrew
Z 1:1 stepper 1605 Ballscrew

Main questions:
Q Y-axis: 2X slaved Nema 23 3nm 4Amp should be good, or OTT for my guestimated weight?!? 65-70KG
Q X-axis 1X Nema 23 3nm 4Amp should be good, or OTT for my guestimated weight?!? 35 Kg.
Q Z-axis 1X Nema 23 3nm 4Amp should be good, or OTT for my guestimated weight?!? 20 Kg.

Q What is the real advantage of a DIY Toroidal PSU, just noise?
Q What DC PSU voltage should i be running?
Q Stepperdrivers, Leadshine? 50-80Volts?

Q 1 or more PSU`s?
If 2 PSU`s. what setup, like X and Z on 1 PSU,
and the slaved-X set on 1 PSU? Or mix it up?

I think for now my initial PC setup would look like this for now.

- Dedicated networked windows 7 PC.
- Mach 3/4 through PP.
Q 64Bit or 32Bit?
Q PCI or mainboard PP`s?
Q PCI PP, what to look for when buying one.
Q Any Minimum video card requirements?
Q Maximum length PP cable to BOB.


Thanks in advance, Bert

[Clive S]

I think for now my initial PC setup would look like this for now.

- Dedicated networked windows 7 PC.
- Mach 3/4 through PP.
Q 64Bit or 32Bit?
Q PCI or mainboard PP`s?
Q PCI PP, what to look for when buying one.
Q Any Minimum video card requirements?
Q Maximum length PP cable to BOB.

Bert From what I understand is that the pp does not work with win7 64bit.
For the system you are building you need a motion controller not via the pp. there are various ways of doing this.

Plus one with Neil on the power supplies. use 24V for the estop, limits etc .

Have you decided on whether to run one nema 34 with a belt between the two motors or 2 nema 23 and slaving them there are cons and pro between the two systems I use slaved I think Neil uses one motor.