we have some overseas customers who engage in LED lighting and electronics, they need many kinds of metal casing/housing which they can assemble all electronics components in, they always require that the stamping case must look like one part, no any gap or space at the four sides,further, their design is the four sides have to be straight in line and round chamfer like R1, firstly,we considered to make them with deep drawn stamping, unforunately, the four sides is very sharp, if deep drawn,there
I want to know what engineers call a mechanical system which is basically made of two parts;
1- a shaft with screw threads on it.
2- a hollow tube with screw threads on the inside wall matching threads on the shaft.
And when the shaft is turning the hollow tube moves to and fro.
Or maybe you know a link.
I appreciate your help.
In mechanical design, symmetry is a powerful tool. The need for radial, spherical or even bilateral symmetry rose with the early machines invented because of many reasons:
-Easy inertia's study and achievement.
-Easy manufacturing process.
-Easy modeling and analysis.
Symmetry can be observed in nature at a big scale as well. If our environnement contributes to the shaping of our ideas and concepts, there is no denying to how much symmetry
I have often been described as a talkative person. It's not that I love my fits of verbal diarrhea, but the need to be as specific as possible and to give as many details as I can leads me to either speak in paragraphs or use a particular vocabulary. In the mean time, I require precision when listening or taking in information.
It's mainly because I'm aware of the error range within transmission and exchange. It's inescapable. In my mind's eye therefore, the narrower I can make the
Updated 5th Oct '14 at 13:05 by Khadija Ouajjani
Express if any ideas u people have