Engineering and Presswork Glossary of Terms
For anyone outside of the presswork industry and looking into the world of metal pressings, presswork terminology can sometimes
be confusing. That’s why we have included a Glossary of commonly used presswork terms on our website – which will explain
exactly what is meant by terms such as pressing, stamping, deep drawing.
If you require any further explanation, please contact a member of our team.
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A-D | E-H | I-L | M-P | R-T | U-Z
R
RAM
The part of the press which the press tool is fixed to and goes up and down.
Re-crystallisation
A result of working material to its limits. The material will then need to be annealed to return it to its original state.
Re-drawing
A process to reduce the diameter of the component.
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Reduction ratios
The percentage of reduction relative to blank size or the diameter of the component.
Reverse drawing
The process of drawing a component back on itself.
Reversible Die
A die which has 2 usable faces.
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Rigorous process methodologies
A process which combines the use of a capability study and FMEAs to identify any pitfalls which may occur during manufacture
Roll feeder
A precision piece of equipment for feeding material through a progression tool
Roller burnishing
A rotating device for finishing close tolerance bores
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S
Servo roll feed
A feeder which drives the raw material forward through the tool on a progression press.
Shear pin
A safety device to prevent damage to machinery.
Shear plate
A safety device to prevent damage to machinery.
Shrinkage
The amount of reduction created when a component is ejected from a die.
Side-action tooling
A mechanical method of piercing or forming a profile in to the side of a component.
Single action press
A human controlled single cycle press operated by a mechanical pedal.
Sizing
A method of finishing close tolerance components.
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Slug
The waste material from a hole within a component.
Slug ejection
A method of removing pierced slugs
Small volume
Component volumes up to 50,000
Spot welding
A method of electronically fusing two components together
Spring back
A result of forming hard material.
Stagger blanking
A method of optimising material usage from the coil by staggering the blank
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SPC
Statistical Process Control
Stiffening ribs
A design feature for strengthening components made from thin material.
Straightener
Removes the coil set which is in coiled material.
Stripper on tooling
A device which ejects the strip/components from tooling
Stud Assembly
A mechanical method of clinching studs into a component.
Surface treatment
A cosmetic or protecting finish by plating or painting.
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T
Temper of material
The hardness of material which is usually expressed in Rockwell or Vickers (VPN)
Tensile strength
The strength of a material.
Texture
The cosmetic surface finish of a material.
Thread rolling
The mechanical method of producing a thread without cutting the material.
Threading Cut
A mechanical method of producing threads, both internal and external.
Tool overload
A monitoring device which prevents damage to tooling.
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Tool safety device
Infra red and load monitoring sensor which detects any misfeeds of the strip prior to the press coming down in order to prevent any damage.
Tool Safety Systems
Monitoring devices which prevents damage to tooling.
Transfer arms
Mechanical arms which move in 2 – 3 dimensions on a transfer press.
Transfer fingers
Mechanical fingers which collect and move the component from one stage to another along the press.
Transfer press
A machine which enables production from a coil of raw material, the component is transferred mechanically through a series of tools by transfer fingers to produce a finished component. Material utilisation is more efficient than on a progression press.
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Transmission
A gear drive for a machine.
Traxtrix dies
Computer generated die forms which allow a blank to be drawn into a cup without the need for a pressure pad.
TS: 16949
BSI approved quality registration for the Automotive industry
Tube forming
A machine or tooling for manipulating tube.
Twin Tooling
When there are two operations on one die set.
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