TURNING

Turning is a machining process that cuts materials (usually metal) by moving a cutter along a workpiece while the workpiece rotates. Which is used to: create rotational parts by cutting away unwanted material. The turning process requires a turning machine or lathe, workpiece, fixture, and cutting tool.

The cutter is typically made of steel holder with an indexable insert made from carbide. Due to its fundamentals, turning operation produces only round, symmetrical parts.

- Turning is used to: produce rotational, typically axi-symmetric, parts that have many features, such as holes, grooves, threads, tapers, various diameter steps, and even contoured surfaces.

features on parts that were manufactured using a different process.

Typical

Feasible

Shapes:

Thin-walled: Cylindrical
Solid: Cylindrical

Part size:

Diameter: 0.02 - 80 in

Materials:

Metals
Alloy Steel
Carbon Steel
Cast Iron
Stainless Steel
Aluminum
Copper
Magnesium
Zinc

Ceramics
Composites
Lead
Nickel
Tin
Titanium
Elastomer
Thermoplastics
Thermosets

Surface finish - Ra:

16 - 125 μin

2 - 250 μin

Tolerance:

± 0.001 in.

± 0.0002 in.

Max wall thickness:

0.02 - 2.5 in.

0.02 - 80 in.

Quantity:

1 - 1000

1 - 1000000

Lead time:

Days

Hours

Advantages:

All materials compatible
Very good tolerances
Short lead times

Disadvantages:

Limited to rotational parts
Part may require several operations and machines
High equipment cost
Significant tool wear
Large amount of scrap

Applications:

Machine components, shafts, engine components