WORM GEARS - Forces and Speed Relations in Just Under 15 Minutes!

Tangential, Radial, and Axial Components,
Equation Derivations,
Rotation Speed Relationships Between Worms and Worm Gears,
Axial Load - Thrust.
00:00 Worm Gears Geometry
00:46 Forces Variable Notation
02:46 Lead Angle
03:36 Worm Gear Force Components
06:39 Friction Forces at the Teeth
08:41 Number of Teeth (Worm) Definition
10:11 Worm Gear Example
Part 1 for this video:
Gear Forces of Helical and Bevel Gears in Just Over 10 Minutes
• Gear Forces of HELICAL...
Example 1: • Gear Force Components ...
Example 2: • Gear Force Components ...
Example 3: • Gear Force Components ...
Next Video: Lewis Bending Stress at the Teeth of a Gear in Just Over 12 Minutes
• LEWIS BENDING STRESS a...
_____________________________________________
Other "Mechanical Engineering Design 1" Links:
1. Axial Loading Review • Axial Loading Review f...
2. Torsion Review • Torsion Review for Mec...
3. Pure Bending and Deflection Review • Bending Review for Mec...
4. Pure Bending and Deflection Combined Example • Deflection of Beams Re...
5. Shear and First Moment About Neutral Axis Review • Transverse Shear Revie...
6. Mohr's Circle Review • COMPLETE Mohr's Circle...
7. Brittle Failure Theories - Fracture Criteria • Brittle Failure Theori...
8. Ductile Failure Theories - Yield Criteria • Ductile Failure Theori...
9. Design Factor and Uncertainty vs. Factor of Safety • DESIGN FACTOR and Unce...
10. Tolerance Stack Ups and Tolerance Loops • Uncertainty for Design...
11. Castigliano's Theorem • Castigliano's Theorem ...
12. Fracture Toughness • FRACTURE TOUGHNESS and...
13. Crack Propagation • CRACK PROPAGATION and ...
14. Fatigue SN Diagrams • Fatigue (Strength-Numb...
15. Marin Factors and Corrected Endurance Limit • Marin Factors for ENDU...
16. Fatigue Stress Concentration and Notch Sensitivity Factors • Fatigue STRESS CONCENT...
17. Fatigue Failure Criteria • Fatigue FAILURE CRITER...
18. Shaft Design and Iterative Process • Shaft Design for INFIN...
19. Power Screws - Torque to Force Relationship • Power Screws - Torque ...
20. Screw Thread Stress • Stresses at Screw Thre...
21. Fastener and Member Stiffness • Bolt (Fasteners) and M...
22. Bolt Tension • BOLT TENSION and Tensi...
23. Proof Strength and Factors of Safety • PROOF STRENGTH - Facto...
24. Spring Stress and Spring Constant • Mechanical Springs - S...
25. Shearing Yield Strength and Presetting • Springs - PRESETTING a...
26. Springs Fatigue - Zimmerli Data • Springs Fatigue and ZI...
27. Spring Design Restrictions • Mechanical SPRING DESI...
28. Extension Springs • EXTENSION SPRING Desig...
29. Gear Relations and Nomenclature • GEARS BASICS - Nomencl...
30. Gear Trains and Planetary Gears - Mechanical Advantage • Gear Trains and PLANET...
31. Spur Gear Forces and Force Components • Gear Forces and Power ...
32. Helical and Bevel Gear Forces • Gear Forces of HELICAL...
33. Worm Gear Forces • WORM GEARS - Forces an...
34. Bending Stress at the Teeth - Lewis Form Factor • LEWIS BENDING STRESS a...
35. Pitting - Surface Compressive Stress • Gear PITTING - Surface...
36. Bearing Radial Loads • BEARINGS BASICS and Be...
37. Bearing Reliability • Bearings RELIABILITY a...
38. Bearing Axial Loads and Equivalent Combined Loads • Bearings - COMBINED Ra...

[@EngineeringChampion]

I’m preparing for the PE exam and I find your videos the fittest teaching style for me. I had these classes 17 years ago. I was a good student but I skipped classes. Now I can’t believe preferring your videos over the textbooks. Thank you. ❤

[@garyhsk8]

This was one of the best lectures I’ve ever seen on this subject. Kudos

[@anthonykyang89]

Thank you so much! Best lecture and clearest step by step lecture I've ever seen. This helped me so much with my components and design class!

[@haidarmakarim2366]

Amazing Illustration. Excellent Job

[@tootalldan5702]

I've never seen a worm gear drive a worm due to rotation resistance. I like the video.

[@LessBoringLectures]

Thanks! Yeah, self-locking or irreversible worm gears cannot be driven backwards, that's true. And the power efficiency for the ones that can would be terrible.

[@omyeole7221]

thx for clearing all my doubts

[@BeavisGoFIREFIREFIRE]

In machine design right now, this channel is incredible!

[@mohamedrouis6005]

Hi ! while determining the Rby why didn't you add Wwga*r_wheel to the expression sum of moment about A, as you calculated in example 2 with bevel gears ? Thanks 😊

[@ridvanyuksel8078]

Hocamızda sizden öğreniyor. Teşekkür ederiz.

[@LessBoringLectures]

kdkdkd. teşekkür ederim!

[@yamashidasato6801]

@@LessBoringLectures 13:46 Hello ! Can I know why you did not take into account the tangential force in the xy plane to calculate the reactions of the supports please? We should normally have the moment of force which is equal to Wwg*r (with r = radius of the wheel) at the center point of the wheel ! thank you in advance 🙏🙏🙏🙏👏

[@ahfsh98fire]

How does this differ if there are two worm gears acting on it?

[@jonathantio7531]

what software do you use? i want to use it too

[@twijers5841]

In the example the Tb is calculated with zero friction?

[@rhasteetoroy4910]

is the pressure angle normal pressure angle?

[@user-hp4rn9yl2d]

Relent .

[@yamashidasato6801]

13:46 Hi ! Can someone explain to me why the tangential force in the xy plane is not taken into account to calculate the reactions of the supports, please? We should normally have the moment of force which is equal to Wwg*r (with r = radius of the wheel) at the center point of the wheel !?🙏🙏🙏🙏👏👏👏

[@mohamedrouis6005]

Hi ! while determining the Rby I would add Wwga*r_wheel to the expression sum of moment about A. That's how he calculated in example 2 with bevel gears. I hope the autor would answer us :)

[@sethsidimela2634]

At 00:56 I presume the worm is right hand, as given also rotating anticlockwise based on its axis. what doesn't make sense is why is the worm gear rotating anticlockwise and not clockwise?

[@LessBoringLectures]

Yeah, this is hard to see in a 2D sketch. I will be adding short 3D videos of animations for these. But what is explained here is in indeed correct: right hand worm rotating counterclockwise from above will make the gear rotate counterclockwise from the front.

[@sulthanshadiqah9321]

Isn't that left hand worm in example on minute 10.59?

[@jamesranawadia]

what would happen to tangential forces on the worm gear if the worm gear was sandwiched between two spurs?

[@LessBoringLectures]

The tangential forces on each side would be equal to each other (in magnitude), and added up and multiplied by the radius of the worm gear, equal to the driving torque. Draw a free body diagram of the worm gear to see this.