Thor, or should that be Zeus?

[Davek0974]

The idea is to allow for absorption of vibration etc. The hollows in the base structures improve strength and keep the weight bit more palatable. I need to check what the final weight estimate will be, I have had some issues with the files in Fusion, so redrawing some of the machine.

The idea here too is that this machine could be running a lot quicker (velocity and acceleration) than a Tormach. Considering the cost of a Tormach (ignore shipment / import duties, just the raw buy price), Thor should be a better machine.

The Tormach 1100 specs are below:-

Feed Rate:

110 IPM (X,Y) 90 IPM (Z)

110 IPM is 2800 mm/min. I am aiming for upwards of 10 000mm/min at least. The rails, ballscrews and motors that I am using cost more than the entire Tormach machine if I paid full new price (which I did not). This is before adding the controller, electronics, structure costs, spindle etc.

Interesting, thanks.

I was only using Torch as an example really but those feed specs are interesting, any idea of the spindle HP rating? It's obviously designed for normal mill usage - bigger tooling, more cut depth, more radial cut depth so I guess 2800mm/min would be in that area.

I guess you will be running fairly high power motors to gain decent acceleration in small distances or it may never reach your high feeds??

Following your build with interest.

[Chaz]

Interesting, thanks.

I was only using Torch as an example really but those feed specs are interesting, any idea of the spindle HP rating? It's obviously designed for normal mill usage - bigger tooling, more cut depth, more radial cut depth so I guess 2800mm/min would be in that area.

I guess you will be running fairly high power motors to gain decent acceleration in small distances or it may never reach your high feeds??

Following your build with interest.

The motors spec were in the first post. 1.5 KW servo for Y, 750W for X and Z.

Spindle power will likely be around 4 KW / 5 HP.

One of the goals of this machine is to be able to run this all from single phase, 32A supply.

The higher feeds allow for more creative milling techniques like Adaptive clearing. Having good speed and acceleration opens the machine up for more uses and will hopefully reduce the typical times currently experienced with my Denford.