Spindle & Servo selection

So I have come to this stage, where I need speed for prototyping production...

I'm using ball screws, linear rails, (need to size) servo & spindle...

The Machine Specs:

Length: 10ft
Width : 5 ft
Height : 5 ft

Ball Screw Spec:
PMI Ball Screw - 10 TPI (Dual lines/rev)
Y-Axis = uses 1 on each side, 2 pcs total, @ 25.4mm dia.
X/Z-Axis = uses 1 pcs total, @ 20mm dia.
images to come in a bit

Linear Rail:
Hiwin Linear Rail (HGW 20 CC 2R)

Y-Axis max weight (100kg)
X-Axis max weight (70kg)
Z-Axis max weight (50kg)

These are estimates max weight, as I use alu for the framework and i-beams for the base stand and framework.

I am still struggling to either get two servo on the Y-Axis to help with weight and accuracy.

Also, I saw onine for using the servo sizing software, but can't get to anywhere...
so I need some help to calculate the servo needed, and spindle needed.

Specification Requirements:
Unloaded : 2000 IPM or more
Cutting Rate : 800 IPM or more

Cutting Materials:
1. Polyfoam (80% of time)
2. Wood (10% of time)
3. Fibers (10% of time)

Min. ~ Max. tool available for use:
0.5mm ~ 38mm

Spindle Requirement per material:
3,000 rpm ~ 16,000 rpm

As Servo and Spindle I saw come in kw for power, I can't figure out which will suite my requirements.
Been looking up the Yaskawa Andy recommended on this forum for me, but unsure which kw to choose, same goes for spindle.

Let me know if this is realistic, more information, more options, more knowledge for me to learn, create calculators, so on, so I can learn more from this build as well.

Screws 20mm
Screws 25mm

I think its same tpi.

Was told its 10tpi.
Will anyone help confirm this?

Cause I dont see 10 lines per inch...
The manual says 10 lead..

it's usual if the screw is metric dia then the lead pitch is metric too so i'd take them as being 10mm pitch

that being the case, i take it 1 rev = 10 mm?

yes that is correct

I have looked into the spindle section, looks like 4.5kw ~ 9kw will run fine for cut rate @ 950 IPM ~ 1200 IPM

however, I would like some introduction into servo selection
the section I saw about servo sizing is based on inertia of the motor, the linear system itself (weight included for axis involved) and also friction coefficion (u).

the servo inertia should be selected based on the total system inertia at a ratio of 1:1 for speed performance.
however, I do not understand if the lowered inertia of servo:system has anything to do with the Watt of the servo?

I looked around and saw servo can go from 50W or so, all the way to over 1000W...
does the Watt have any direct relationship with the inertia?
if so, I will just do my best to calculate worst case inertia senario and ratio it against the servo, to start the sizing?

or can I just use Watt as an initial sizing factor, then work on the inertia?

any help?

thanks

Here is a sigma servo sizing software by Yaskawa, am sharing with those who needs help with servo sizing.

www.dropbox.com/s/ez1ggtki54jzqdb/SigmaJunmaSize.zip

for pitch = lead (when its a 1start ball screw)
otherwise pitch = lead x # of starts

eg 1:
lead = 10mm/rev
starts = 1
pitch = 10 x 1 = 10mm

eg 2:
lead = 10mm/rev
starts = 5
pitch = 10 x 5 = 50mm

Ball Screw system friction coefficient is usually 0.005u (or refer to ball screw manual)
if no gear is selected, enter 1, and move on to coupling (use the calc on the right side)

the rest I think should be easy for anyone to figure out, just plug the numbers in and start.
if a motor can't be found, go BACK and select all motor models, including older models such as JUMMA, at least you get an idea of what kind of power and torque you'll need.

with the analyzed information, you may then go online or ebay to find what meets your requirements.

have fun!