GEARBOX

1. Constant Mesh Gearbox Working
2. 6 Speed Constant Mesh
3. Constant Mesh Gearbox Working
4. Constant Mesh Gearbox Layout
5. Synchromesh Gearbox

Constant Mesh Gearbox: In a constant mesh gearbox, the gear claws are all arranged on a single file but the order is jumbled up. So for instance the first gear is located at the far end next to the sixth gear and the third gear after that and so on. Disadvantages 1. Lower efficiency as compared with sliding mesh type. More expensive as additional dog clutch have is being used. Working is bit complicated. As the gears are in constant mesh, we can use helical gear which pro. Most modern manual motorcycle gearboxes have 'constant-mesh' gears which are always mated but may rotate freely on a shaft until locked by a toothed sliding collar, or 'dog clutch'. Since the gears are always rotating and can only be accessed sequentially, synchromesh is not generally needed.

A gearbox, also known as a gear case or gear head, is a gear or a hydraulic system responsible for transmitting mechanical power from a prime mover (an engine or electric motor) into some form of useful output.

A gearbox is a set of gears for transmitting power from one rotating shaft to another. They are used in a wide range of industrial, automotive and home machinery application.

Gear heads are available in different sizes, capacities and speed ratios. Their main function is to convert the input provided by an electric motor into an output of lower RPM and higher torque.

Constant Mesh Gearbox Working

Functions of a Gearbox

• A gearbox is precisely bored to control gear and shaft alignment.
• It is used as a housing/container for gear oil.
• It is a metal casing for protecting gears and lubricant from water, dust and other contaminants.

Gearbox Specifications

There are a number of performance specifications which must be considered while choosing a gearbox for different industrial applications. Some of the important specifications are :
• Gear ratio : The ratio may be specified as x : 1, where x is an integer.
• Output torque
• Maximum input power
• Maximum input speed
• Gearing arrangement
• Reducer output
• Shaft Alignment

Types of Drives and gearboxes

6 Speed Constant Mesh

CLASSIFICATION OF MANUFACTURING PROCESSES OF GEARS

Constant Mesh Gearbox Working

• Disc type cutter
• End mill cutter

Constant Mesh Gearbox Layout

• Rack – type cutter generating process
• Pinion type cutter generating process

Synchromesh Gearbox

• Axial hobbing
• Radial hobbing
• Tangential hobbing

• Straight Bevel – gear generator
• Spiral bevel –gear Generator

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