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
A
Age Hardening
An effect on material which has been stored for a considerable time meaning that it may require annealing before being processed any further.
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Aluminium Alloy
A pressing material used for reduced component weight with good corrosion resistance.
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Annealing
Method to remedy the effects of age hardening or hardening of material through the presswork process of manufacturing the product so that the material is restored to its original condition.
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B
Bar coding
A method of labelling a container of finished components or pressings so that they can be easily identified. The bar code contains information for the customer regarding the date of production, invoice value, delivery date etc and can be scanned out by the manufacturer and scanned in by the customer.
Bending
A method of manipulating material into shape for the desired presswork result.
Blank
The outside shape of a component before stamping or pressing.
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Blank formulae
The method of calculating the circular diameter of a blank to form a component. Blank holder pressure
Pressure applied to the surface of the strip prior to forming the component to prevent gathering and distortion of the material.
Blank length
The calculation of a pre determined measurement from a component drawing.
Blanking
A process to produce a shape of material from a coil or sheet prior to stamping or pressing.
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Blanking clearance
The clearance between the punch and the die which is necessary when cutting a shape from the material.
Blanking pressure
The tonnage required to produce the blank, determined by the thickness and hardness of the material being used.
Bulge Forming
A method of manipulating a drawn metal component with fluid or rubber.
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C
C Frame press
Open fronted type of press design for presswork.
CAD
Computer Aided Design
CAM
Computer Aided Manufacturing
CAM-action tooling
A method of transferring the power press movement from vertical to horizontal.
CAM-controlled ejection
When the ejection of a component from the press is controlled by a CAM unit.
Circle area
Used for calculating tonnage – circle area of the blank multiplied by gauge multiplied by tensile strength.
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Clinch Assembly
Method of retaining fasteners and threaded inserts.
Clutch key
Mechanism which drives the press into motion for presswork production.
CMM facility
Co-ordinate Measuring Machine
Coil holder
Device which carries the coil of raw material prior to it being fed into the machine for pressing or stamping.
Coining
Method of embossing a distinctive feature on a component.
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Complete Management Systems
Documented quality and environmental management systems to ISO standards.
Compression
The squeezing of two or more surfaces.
Corrosive resistant alloy
A stainless steel which resists rusting and tarnishing.
Counter balance cylinder
A pneumatic cylinder that assists the RAM of a mechanical press
Cropping tool
Used to cut lengths of strip for stamping or pressing purposes.
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D
De-coiler & leveller
A piece of equipment which carries the coil that passes through the straightener to remove the set in the coil.
Deep Drawn Components
A cylindrical component which is more than 1.5 times longer than the diameter.
Degreasing
A method of washing lubricant from finished components.
Delivery Performance monitoring
Monitors the on time and quality performance of suppliers to H. T, Brigham, and also H T Brigham’s performance to their customer base.
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Dial feed press
An indexible fixture on a power press.
Die
A section of the press tool which is used to form or cut the component to shape – producing presswork to specification.
DIN Standard
European metal standard.
Double action drawing press
A design of press for deep drawn components.
Draw Radius
Calculated by multiplying the gauge of the material by a factor.
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Draw ratio
The percentage difference between the blank size and the formed diameter of the component.
Draw reduction
When a component is re-drawn following a previous operation..
Drawing air vents
Usually a small hole in the forming punch to expel air from inside of the component during forming.
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