Sturdy and Fast all Steel CNC , my first build

[Boyan Silyavski]

Hi dear
I want to design and then building a industrial CNC. the aim of design is milling Aluminum and moving axis must have
2500mm X axis - 2000mm Y axis and 600mm Z axis.
for this condition i start to design a cnc machine. this is a initial design and i have must better my design.


I have some question. please answer me.
1- because X and Y axis is long I used rotary bull nut. for this condition I design a rotary bull nut mechanism. is it important to use Super-precision angular contact ball bearings: High-speed for example 7015 or typical angular contact in good for this mechanism. It's notice that MY cnc machine is used for milling AL and i want to build it.
2-if the rotary speed of Spindle motor is 6000 rpm how design my cnc that vibration of this is minimum. how simulation I do in software? for example Harmonic response? and what the condition of analysis?
3- because i want to build this what's the important notice in design and assembly of the part?
Thank's

i will not lie to you. If you have mechanical questions how to make 600mm Z axis strong and this is your first build, better contract me or sb from forum to design you the machine. You will make mistakes, that's reality. It takes much more planning to make a perfect machine, and to tell you the truth common sense is much more better than simulation software

So either make your own build log where people help you for free, or contract sb to design you the machine, at the end it would be much cheaper, as every mistake there is very costly.