View Poll Results: Which CNC Bridge is the best ?
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09-06-2018 #1
This was another design of mine for 6 axis machining of marble.
Both Bridge and Z axis is symetric construction.
My friend showed me some catalogues for same purpose CNC machines, mostly italian.
I came up with this design and project will start whenever they change their workshop to a bigger workshop.
I will share project technical drawings when this construction finishes.
There will be total 2 CNC with this type. Only difference that the other one will have concrete block X axis just like the one at attached pict. X Axis is not mobile
Base Foundation of this machine will be separated from workshop foundation by 5 cm.
There will be pits for anchor bolts below x axis footings. Those pits will be filled with grouting epoxy.Last edited by Halbmond; 09-06-2018 at 08:27 AM.
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10-06-2018 #2
After pippin recommendation I changed X axis design.
After changing double linear on each X axis to one linear rail, mass of bed frame and bridge are changed.
Double linear rail type : RGW35CC - 35 mm width rail - 100 mm width linear carriage block
One linear rail type : RGW45CC - 45 mm width rail - 100 mm width linear carriage block
6 linear carriage bearings canceled, 2 piece of 4m length linear rail canceled.
With the reduction of steel profiles, there is approximately total 1.500 - 2.000 USD cost reduction due to one rail design.
Old Mass :
Bridge : 1.200 kg
Bed Frame : 4.800 kg
New Mass :
Bridge : 1.100 kg
Bed Frame : 3.950 kg
I need help about X axis drive. I think both X axis and Z axis should be rack&pinion design instead of ball screw.
At X axis ball screw is way above linear rail I didnt like it, and rack&inion will get the ram closer to the saddle for Z axis.
Any ideas.
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