13: Mechanical Engineering

Question 1

Define motion transmission

Answer 1

Relaying motion from one part to another without altering the motion’s direction

Question 2

Name the 3 types of motions

Answer 2

Rotational (moves around one ais)
Translational (up and down, left and right)
Helical (rot + trans)

Question 3

Define gear trains

Answer 3

Transmission, wheels turning in opposite directions of each other, rotation, reversible

Question 4

Define friction gears

Answer 4

Transmission, gears without teeth moving in opposite directions of each other, rotation, reversible

Question 5

Define the chain and sprocket

Answer 5

Transmission, rotation, reversible, wheels on same side of chain move in same direction

Question 6

Define the belt and pulley

Answer 6

Transmission, rotation, reversible, belt follows direction pulley moves in

Question 7

Define a worm and worm gear

Answer 7

Transmission, rotation, not reversible, toothed components not parallel

Question 8

How does speed between components work?

Answer 8

Increasing when large to small
Decreasing when small to large
Constant if objects are all same size

Question 9

Define motion transformation

Answer 9

Motion transmitted gets altered (ie rot to trans), driver and driven not making same motion

Question 10

Define the slider-crank mechanism

Answer 10

rot to trans/trans to rot, reversible

Question 11

Define the cam and follower + eccentric

Answer 11

Cam rotates and follower translates, not reversible

Eccentric: cam axis not centered allowing follower to have greater movement

Question 12

Define the rack and pinion system

Answer 12

rot to trans/trans to rot, reversible

Question 13

Define the 2 types of screw and gear systems

Answer 13

Not reversible, rot to trans

1: screw (driver), nut (driven)
2: nut (driver), screw (driven)