Recent content by beashayyael

Arm release: The system release is like an awning to the sun that has arms. When the awning opens the arm opens and because the spring is stretched the arm tends to open. And when I want to return the awning to the closing position with the help of the spring force the arms are returned to...

Hello . The goal is to look for what force F I need to apply in order to return the arms to the closed position. Attached is a schema in the hope that my purpose will be understood I want to know what forces are acting on the system of the arms as well as the springs Many thanks in advance

The inertia definition is integral of I= r^2dm and the units of this is [Kg*sqrm] the inertia of rectangle is : I= B*H^3/12 and the unit of inertia is [m^4] My question is how do the two things work out? Is there no contradiction between them?

Hi to everyone I would like if someone has a mathematical "guide" to how a DC motor is chosen, the motor has a gear attached. In the mathematical formulas the parameters of the DC motor are reflected as, torque constant, voltage constant, motor NL current, motor terminal resistance, ext '. The...

Thank you very much

Dear Jrmichler I have read what you have written to me and also what is written in the link. I do not understand The first answer told me that "In order to solve this problem, show all of the above on one or more diagrams. If a mass is moving in translation, search terms ball screw load inertia...

Thank you very much for your reply. I am attaching a new scheme that on the last page is drawn a bearing with the forces that exert on it. The weight that the screw sees is the one that appears in the diagram as "W * cos"?

In order to choose a DC motor according to the article titled: APPYING MOTORS IN LINEAR MOTION APPLICATION by PITTMAN - step 4 : "determine the total reflected inertia (Jt) back from the load to lead screw shaft " . The formula is: Jt = Jscrew + Jload. This calculation relies on the fact...