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But, we have two unknowns which may make this very expensive. How much weight and how accurate?
3D printers are now widely available, they are highly accurate. On the hobby scale they can't handle much weight.
QuoteBut, we have two unknowns which may make this very expensive. How much weight and how accurate?The weight I plan to put on the bottom of A component is really nothing - it's a mettalic plate 1mm height and 1cm diameter. I assume it weights several dozens of grams.What exactly do you mean by accuracy - angles or vertical positioning? Again, I can only assume, but I think, for angles accuracy up to 1 degree is enough(in both directions). For vertical positioning the more accurate the better:) I think 0,1-0,3mm is good enough.Quote3D printers are now widely available, they are highly accurate. On the hobby scale they can't handle much weight.3D printers need the same 3 axis that you need here, kits of just the mechanical parts are available, or you can build it out of the actobotics. A tenth of a mm is pretty tight. If the scale of the machine is small you can gear it down to gain accuracy.Do I understand correctly that you suggest me to use 3D-printer to make backbone for my device?As for programming, I think C++ is better for me. I'm not a programmer, but I had a course on it and learnt some basics.
The weight I plan to put on the bottom of A component is really nothing - it's a mettalic plate 1mm height and 1cm diameter. I assume it weights several dozens of grams.
They are called servos. Here is a database:http://www.servodatabase.com/You need a digital and probably coreless. What the gear is made out of will affect lash, durabilty (under stress/shock) and wear. Durability, since you have little weight, is not a concern.Accuracy depends on a myriad of things including gear lash in your mechanism.You can multiply the "fineness" of the servo by gearing it down.I have limited experience with robotics and none with linear actuators (you will probably build your own out of actobotics) so specific recommendations I can not give. Whether anyone else will weigh in is in doubt. I suggest you browse around.