Hybrid Mill Design

[Chaz]

Hi,

So I would like to get a larger mill that is designed mainly for cutting Aluminium. This means high speed spindle and fairly quick feed rates.

Heavily inspired by this design (http://uk.dmgmori.com/blob/172034/d7...0-pdf-data.pdf), see pages 4 to 7, I came up with the following design. This is also very similar to the Ultimaker 3D printer design where you have a 'box' and you keep all the movement on top and place everything centrally over the table.

The design is drawn using 1605 Leadscrews (C5 grade) and 400W Servo Motors (4, 5 or 6) - Cant decide if Z and Y need 2nd screws or not. Rails are Hiwin 20 (for Z) and 25 for X and Y.

The spindle will be a 4KW Chinese Watercooled spindle.

Cutting size based on the design is around X and Y - 600 mm x 600 mm x 250 mm.

For the frame, I want to look at using something 'interesting' like Epoxy Granite or something similar. For any parts that are needed, these will be done out of either steel or aluminium.

Thoughts / critique welcome. Thanks.