2nd Midterm Review_v2 - 2nd Midterm Review Monday, December...

Info iconThis preview shows pages 1–8. Sign up to view the full content.

View Full Document Right Arrow Icon
d 2 nd Midterm Review Monday, December 8
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Problem 1 Givens? Gear 1: T = 20lb*in N = 18T; P = 9T/in Gear 2: N = 64T; P = 9T/in ear 3: N = 24T; Gear 3: N = 24T; P = 6T/in Gear 4: N = 36T; = 6T/in P = 6T/in
Background image of page 2
Pitch Diameter Find all of the pitch diameters N 1 18 teeth d 1 = P 1 = 9 / in = 2 d 2 = P 2 N 2 = 9 / 64 t eet h = 7.11 d 3 = P 3 N 3 = 6 / 24 = 4 N 4 36 d 4 = P 4 = 6 / = 6
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Tangential & Normal Forces Pinion = Gear 1 W 21,n W 21,t M o 0 ! - T in + W 21, t $ 2 d 1 = 0 ` W t = T in $ d 1 2 F 1,t T in F 1,n o W W 21,n 1 t Φ tan z = W 21, t 21, n ` W 21, n = W 21, t $ tan z W 21,t
Background image of page 4
Now, we need the torque… This torque is transferred to gear Gear 2 F 2,t 3 T out W 12,t F 2,n o M o = 0 ! - T out + W 12, t $ 2 d 2 = 0 ` T out = W 12, t $ 2 d 2 W 12,n
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
More force analysis… Gear 3 Gear 3 W 43,n W 43,t M o = 0 ! - T in + W 43, t $ 2 d 3 = 0 ` W 43, t = T in $ d 3 2 F 3,t T in F 3,n o tan z = W 43, n ` W = W $ tan z W 43,n 3 t Φ W 43, t 43, n 43, t W 43,t
Background image of page 6
Radial Loads @ bearings Make sure your drawings are consistent! B x y B y n t F 3,n M A ! = 0 F 2, t $ r A 2 - F 3, t $ r A 3 - B x $ r AB = 0 A x F 2,t F 2,n F 3,t r A3 F x = 0 !
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 8
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 07/22/2010 for the course ME Mecheng 35 taught by Professor 350 during the Winter '08 term at University of Michigan-Dearborn.

Page1 / 16

2nd Midterm Review_v2 - 2nd Midterm Review Monday, December...

This preview shows document pages 1 - 8. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online