Hi All.
My first question regards mounting steel profile rails to aluminum t-slots. The tightly mounted rail and the t-slot form basically a bimetallic strip. The difference in coefficients of temperature expansion would create forces and moments that would try to bend the two beams (rail and t-slot). So my question is: How concerned should I be about that effect? Of course it depends on the particular construction but in the end, should one take some measurements to reinforce the t-slots that the rails are mounted on?
My second question is how resistant epoxy-granite is to uneven temperature expansion, especially regarding metal inserts? Should I be concerned that the steel inserts, the rails are mounted on might become loose, or that the EG might crack under the stress created by the expanding insert?
My third question is about the motion system: Now, the Fixed-Supported system there we have one axially fixed bearing body supporting the screw form one side and one axially free bearing supporting the other side. this way the screw is allowed to expand and contract as the temperature changes. However there is also the Fixed-Fixed system. How does that system cope with temperature changes? Is it only employed in machines where the frame and screw have the same temperature expansion rate?
Lastly, How good of an idea it is to fill steel or aluminum profiles with epoxy-granite? What's the probability of it becoming loose (or brake) inside due to temperature expansion?
Thanks a lot in advance.