Pressure Vessel ,Thin Wall Hoop and Longitudinal Stresses
General Engineering and Design Data Menu
Industrial Electric Motor Application, Design and Installation Menu
Use these equations and calculator to determine the Mass Moment of Inertia of a lead screw / worm gear drive system.
Worm Gear / Lead Screw Drive System
Equation:
Motor Speed:
Load Torque Reflected to Motor:
Friction Force:
Friction Torque:
Total Inertia
Where:
Sm = | Motor Speed, rpm |
Vl = | Load Speed, inches/minute |
P = | Pitch, rev/in |
Tr = | Torque reflected to motor, lb-in |
Fl = | Load force, lb |
e = | Efficiency |
Fpf = | Preload Force, lb |
= | Coefficient of friction of screw |
Ff = | Friction force, lb |
W = | Weight, lb |
Tf = | Friction torque. lb-in |
Jl = | Load inertia, lb-in-sec2 |
g = | Gravitational constant, 386 in/sec2 |
Jls = | Worm gear / lead screw inertia, lb-in-sec2 |
Jm = | Motor inertia, lb-in-sec2 |