Aluminum profile and alu plate 1500mm x 600mm x 150mm working area, first cnc.

[pierantoine]

Hello,After the Boyan's answer, I've redisign it; this one is inspired from those on this forum This project is to really puts hands into the cnc world with a simple machine that will work, I've no lathe, milling machines or welding equipement at home and the main idea was to do a DIY project using the maximum of aluminium profile or aluminium small plates
I'would like to cut mainly MDF, wood, PMMA, and aluminium if i can, but I'don't need a Fast machine.





Work area: X-axis: 600mm, Y-axis: 1500mm Z-axis: 150mm

Frame : i've started to make a frame with 30x60 aluminium profile from motedis.co.uk wich is perfect for sbr20. this aluminum frame could be cocrete epoxy filled and straightened with (alu or steel) plates.A friend could help me to make a steel frame, in this case i will go with the epoxy leveling technique. (i've seen the useful boyan post in his build log).
Gantry made of aluminium 80x120...

all the plates are 20mm thick maybe i can use less somewhere...

i could remove the orange plate and replace the yellow profiles with a 200mm plate.


Mechanical parts:

• Ballscrews: RM2005: X-axis: 1650mm x 2, Y-axis: RM2005 800mm x 1, RM1605: Z-axis: 340mm x 150mm

• Ballscrew supports: BK15 (fixed end), BF15 (loose end) BK12/BF12 for Z axis.
• Linear rails: 20mm Hiwin profile rails hgw20ca Z0 or Z1 Preload.

i've seen that a lot of designs use pulleys to avoid resonances, i can use it later but now, i want a simple machine to start with.

Electrical parts:

• Motion controler Purelogic PLC 4x-g2

http://purelogic.ru/shop/elektronnye...cii_drajverov/ http://www.mycncuk.com/threads/4931-...board-PLC4x-G2

• Stepper motors:

for y-axis 2x Nema 23 270 Oz/in ref 23hs7430 from chinese "longs motor"
for x-axis (to buy, wich torque i need) mybe the same ref or 23hs7430 equivalent

• Stepper drivers; Leadshine AM882 x 4
• PSU Linear, toroidal transformer (rectifier, capacitors)
• Spindle motor: 2.2KW with VFD and water cooling.

what do you think of this design ? do i need to change things ?
thanks for your help

happy christmas builds !