Drive Systems

Question 1

Simple Gear Trains

Answer 1

The input gear causing the system to move is the DRIVER

The output gear is DRIVEN

Question 2

Idler Gear

Answer 2

is a gear that can be inserted into a system, with its main purpose being to allow the driver gear and the driven gear to rotate in the same direction

Question 3

Compound Gear Trains

Answer 3

is created when multiple gear trains are connected by a common shaft. Used to create very large change in speed and are useful when there are only small spaces.`

Question 4

Worm and Wheel

Answer 4

Using a worm and wheel is a way of making a large speed reduction as well as a large torque.

Question 5

Worm and Nut

Answer 5

is used to convert rotational movement into linear movement.

Question 6

Rack and Pinion

Answer 6

is used to convert rotational movement into linear movement.

Question 7

Belt Drive

Answer 7

3 Belt types
V belt = allows for more tension
Flat belt = Allows slip when needed
Toothed Belt = do not allow slippage

Question 8

Chain drive

Answer 8

Most belt-drive systems can cause slip. This can be resolved by using a chain drive.

Question 9

Rigid Couplings or

Aligned Couplings

Answer 9

2 Types
Flange = consists of discs which are fixed at each end of each shaft. The two flanges are then bolted together to complete the drive.

Muff = acts like a sleeve, covering both shafts and once again is bolted together to complete the drive.

Question 10

Flexible Couplings or

Misaligned Couplings

Answer 10

they accommodate the flaws and dynamics. These couplings are most commonly employed in devices to protect shafts against the harmful effects from shock loads, hard starts or vibrations.

Question 11

Clutches

Answer 11

allows to rotating shafts to be connected and disconnected.

Question 12

Plain Bearings or bush/bushing

Answer 12

no rolling element.

gives a surface for rotary applications.

Question 13

Roller and Ball Bearings

Answer 13

outer and inner race with grooves machined into them.

is used when dealing with high loads and lower speeds.

Question 14

Thrust Bearings

Answer 14

Designed to support high axial load.

Question 15

Journal Bearings

Answer 15

is used when a radial load is applied to a mechanism. They reduce load friction. It will wear less and the lifetime will be longer thus making it more efficient.

Question 16

Split Bearing

Answer 16

are designed to wear, can be reached and accessed more easily, save costs and reduce downtime as well as increasing over-all safety.

Question 17

T = Fr

Answer 17

T = Torque (Nm)
F = Force (N)
r = radius (m)