Glossary

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Blank

A flat metal disc or cylinder used as the starting material for metal spinning.

Burr

A rough or sharp edge left on a spun component, typically removed during finishing.

C

CNC Spinning

Metal spinning using computer numerical control (CNC) technology to automate and precisely control the spinning process.

Cone

A three-dimensional geometric shape formed through metal spinning, featuring a circular base that narrows down to a single point.

CR

Corner Radius

D

Die

Also known as Tool, A metal tool is used when shaping the workpiece during the spinning process.

Dished End

Our Term for the various types of heads – often called semi-elliptical head, tori-spherical head, dished head.

Dished plate

spinning consisting of only a spherical radius

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F

Finishing

Post-spinning processes, such as polishing, buffing, or coating, to enhance the appearance and functionality of the component.

Flat Flanged end

Our term for a flat spinning with only 1 corner radius

Flange

The flat, often widened end of a spun component, used for attachment or mounting purposes.

Flare

The outward curving or widening of the edge or rim of a spun component.

Forming Tools

Hand-held tools or rollers used to shape the metal on the spinning lathe.

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H

I

Inside Diameter (ID)

The width or distance across a circular spun component, measured from the Inside edge to the opposite edge through its centre.

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K

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M

Metal Spinning

The manufacturing process of forming a metal disk or tube into a hollow, cylindrical, or conical shape by rotating it on a lathe while using hand-held tools.

Minimum Thickness

The point in where the spinning has thinned to its lowest point

Outside Diameter (O/D)

The width or distance across a circular spun component, measured from the outside edge to the opposite edge through its centre.

Overall Height (O/A HT)

Height from the very top of the spinning to its lowest point

Quality Control

The procedures and measures in place to ensure that spun components meet specified quality standards.

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O

P

Q

R

Run Back

When the material builds up during the spinning process.

S

SR

Spherical Radius

Straight Flat (SF)

Flat on the side of a dished end.

T

Tangent

The point at which a tool or roller contacts the surface of the spinning workpiece.

Tolerance

The acceptable range of variation in dimensions or specifications for a spun metal component.

Tool

Also known as die, A metal tool is used to shape the workpiece during the spinning process.

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V

W

Work-Hardening

The process by which the metal becomes stronger and more rigid during metal spinning due to the deformation process.

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