The document discusses the design of a gearbox to lift 8kg 1 meter as fast as possible while being as small and using the least electrical power possible. It describes exploring different gear types to find the most efficient solution. An initial triangular design is presented that reduces the axial length to 61mm. Future considerations include using mathematical modeling to optimize energy usage, efficiency, and gear ratios while prolonging gear life through non-integer gear ratios.

1. Gearbox
Creativity journey
Nhon Vo
Sam Robertson
Brandon Lay
Pandanikum Darren

2. Creativity journey
 Refining problem
 Solution: Tools and resources
 Initial design
 Future consideration

3. Refining problems
1
To design a gearbox that raises at least 8kg 1 metre as fast as possible,
as small as possible and that uses the least electrical power.

4. How can we lift?

5. How can we achieve
this?
By exploring a large array of
gearing systems and choosing an
appropriate solution that is
efficient and effective.

6. Types of Gears
 S p u r g e a r s
 Wo r m g e a r s
 B e v e l g e a r s
 H e l i c a l g e a r s
 E p i c y c l i c g e a r s

7. Spur gears
 A d v a n t a g e s :
E a s i l y p r o d u c e d
R e l i a b l e a n d e f f i c i e n t
P a r a l l e l t o i t s a x i s
 D i s a d v a n t a g e s :
S l o w
Te e t h s t r e s s
C a n o n l y t r a n s f e r p o w e r
p a r a l l e l s h a f t s

8. Worm gears
 A d v a n t a g e s :
C o m p a c t d e s i g n
M e s h i n g e f f i c i e n t
H i g h r a t i o s a r e a c h i e v a b l e i n s i n g l e s t e p
 D i s a d v a n t a g e s :
D i f f i c u l t t o m a n u f a c t u r e
Po t e n t i a l f o r h i g h p o w e r l o s s

9. Bevel gears
 A d v a n t a g e s :
D i f f e r e n t o p e r a t i n g a n g l e s
S c a l a b l e
 D i s a d v a n t a g e s :
D i f f i c u l t t o m a c h i n e
M u s t b e p r e c i s e l y m o u n t e d

10. Helical gears
 A d v a n t a g e s :
D u r a b i l i t y
L o a d d i s t r i b u t i o n
C a n t r a n s m i t m o t i o n t o e i t h e r
p a r a l l e l a n d r i g h t a n g l e s h a f t
 D i s a d v a n t a g e s :
D i f f i c u l t t o m a c h i n e

11. Epicyclic gears
 A d v a n t a g e s :
C o m p a c t d e s i g n
H i g h p o w e r d e n s i t y
H i g h e f f i c i e n c y
 D i s a d v a n t a g e s :
N o r o o m f o r e r r o r
A c c u r a c y e s s e n t i a l f o r a s s u r e l o a d s h a r i n g
C a n o n l y t r a n s f e r p o w e r p a r a l l e l s h a f t s

12. Tools and resources
2

13. Solidworks
 V i s u a l i s i n g d e s i g n s a n d
d ra w i n g s
 F i n i t e e l e m e n t a n a l y s i s
 V i s u a l i s i n g m o t i o n s
 A n a l y s i n g m a t e r i a l , c o s t a n d
s u s t a i n a b i l i t y.

14. Mathematical
model
 O p t i m i z i n g t h e s y s t e m
 M a n i p u l a t i n g va r i a b l e s
 A n a l y s i n g d a t a

15. References
 E B S C O H O S T
 O n l i n e r e s e a r c h
 Tu t o r a n d l e c t u r e r

16. Initial design
3

17. Reducing maximum axial
length
 Tr i a n g u l a r d e s i g n
i m p r o v e s c o m p a c t n e s s
 6 1 m m i n p i c t u r e s h o w n
 6 1 m m c a n b e f u r t h e r
r e d u c e d

18. Prolong gear life
 M o r e c y c l e s = f a t i q u e
 N o n i n t e g e r g e a r ra t i o s
b e t w e e n m a t i n g t e e t h
 P r e v i o u s i s 4 2 : 1 9
 O n t h e l e f t i s 4 8 : 1 3

19. Future consideration
4

20. Life cycle
 To o t h b e n d i n g s t r e s s
L e w i s e q u a t i o n : 𝜎 =
𝐹𝑡
𝑚𝑏𝑌
 S u r f a c e d u ra b i l i t y
A b ra s i v e w e a r
S c o r i n g
P i t t i n g a n d S p a l l i n g

21. Mathematical Modeling
 E n e r g y a n a l y s i s
 Fa t i q u e
 E f f i c i e n c y
 D e r i va t i o n o f o v e ra l l t o o t h
ra t i o

22. Thank you for your attention