I have posted a set of AutoCAD DWG drawings using 3d solids. The main drawing is Epoxy Concrete 01 Main.
If you download only the main file alone you will see very little You need the linked files for Autocad to display the image.
Just put them all in one directory so Autocad can find them when you open the main file.
You can find the files here:
Free File Hosting Made Simple - MediaFire
There are only 2 layers to check;
One for the way covers
One for Dimensions
Both are turned off
I have a granite surface plate 630 MM x100MM. My plan is to cast all the parts for this mill using the surface plate to generate flat surfaces.
The top of the base (It will be made upside down)
The face of the columns
The face if the bridge
The face of the spindle carriage (using ground blocks)
I am still undecided on the overall height. It can be increased.
The 190MM High base design has a lattice grid created by polystyrene blocks. It is planned to place 12mm deformed steel bar in each diagonal lattice 40 mm from the top and 25mm from the bottom for reinforcement. The outer edge of the base is reinforced with 12mm deformed bar bent into a rectangle tied and overlapped 40mm from the top and 25mm from the bottom edge.
The columns and bridge beam to be similarly reinforced
As the plans show the machine comprises a number of frame parts.
The main parts to be made from Polymer concrete are:
These parts are to be made separately, when completed they will be joined as one.
This will allow final alignment of the columns to the bed; ideally this should be done with removable fixings for those with difficult access issues, and limited means of transport.
I am considering cast in studding through metal plates with jack screws for adjustment (The joint to be grouted with the Epoxy from my other thread)
Moving Bridge beam
Reinforced as above.
The Moving carriage that holds the spindle to the bridge beam
This could be made from steel or polymer concrete, I do not know if the thinner sections will be strong enough with polymer. (The spindle is 110mm Diameter) 40 taper socket
All the linear guide rails are size 25
25mm Ball screws for all axes
Next step is to analyze the structure I guess I will have to come to terms with finite analysis software.
The control system will be Mach 3 using servos.