Power Screws - Torque to Force Relationships in Just Over 10 Minutes!
Torque to Raise a Load,
Torque to Lower a Load,
Pitch Diameter, Screw Lead - Thread Terminology,
Thread Profiles: Square, ACME, etc.
Self-Locking Power Screws,
Collar Friction Torque.
0:00 Power Screws
0:28 Screw Nomenclature
1:01 Lead
1:48 Thread Profiles
2:08 Assumptions for Equation
3:19 Torque to Force Relationship
4:02 Torque to Raise Load
5:55 Torque to Lower Load
6:27 Self-Locking Exception
6:50 Angled Thread Profiles
7:22 Collar Friction
8:13 C-Clamp Example
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• Stresses at Screw Threads in Just Ove...
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