Lathework St Oliver’s Community

College

The Centre

Lathe

In lathework, the

workpiece is rotated

against a cutting tool.

The cutting tool is

moved along a certain

path to produce the

required shape.

Lathework is normally

referred to as turning.

Headstock

This houses the lathe spindle and also contains

gears to provide a range of specific speeds.

Tailstock

The tailstock can be moved along the bed

slideways and may be clamped in any desired

position. The tailstock is used for drilling

operations on the lathe

Three-Jaw Self-Centring chuck

This is used for holding round or hexagonal work

Four-Jaw Independent Chuck

The four-jaw

independent chuck is

used for gripping

square, round,

rectangular and

irregular shapes

Toolposts

The toolpost is mounted on the top slide and

carries the tool or a tool holder.

Tungsten Carbide cutting tool

Facing

In facing, the tool is moved at right angles to the axis of

rotation of the work by means of the cross slide. Flat

surfaces are produced and this is the process used to face

work and finish shoulders.

https://www.youtube.com/watch?v=zAKbYXuaAi8

Parallel

Turning

In parallel turning, the tool

moves parallel to the axis of

rotation of the work and

cylindrical forms are produced

https://www.youtube.com/watch?v=83dUQ896Q2w

Centre Drill

The centre drill is used for drilling countersunk holes to

accommodate lathe centres and also for starting holes

when drilling on the lathe.

Centre

drilled work

https://www.youtube.com/watch?v=O9uNy76nH8M

Drilling on

the lathe

When drilling on the lathe, the work revolves and the drill is fed into it by turning the tailstock handwheel.

During the drilling the drill must be withdrawn from time to time to remove swarf from its flutes and to apply cutting fluid.

https://www.youtube.com/watch?v=tb65daDg5Os

Knurling

Knurling is the operation of

impressing serrations on

articles to enable them to be

gripped securely by hand.

https://www.youtube.com/watch?v=Dt0u0yuiW34

Parting off

This involves cutting off parts

from the bars from which they

were turned.

https://www.youtube.com/watch?v=cLzVQRXysbY