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Glossary: Metal Stamping Terminology

 

Whether you're looking for big-ticket machinery such as a servo press, a blanking press, or simply components, such as bolster plates, we have it in stock. 

Please look through this website's glossary page for the terms and descriptions or go to the appropriate page link. You can also dial us directly and we will be happy to give you more info on our blanking presses, bolster plates, or servo presses.

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  • ANISOTROPY

    A property of metal products indicating metal sheet resistance to thinning during the deformation process

  • ANTI-VIBRATION PADS

    Antivibration elements are made of elastomer material. They are used to isolate the machines from the footholds and to avoid propagation of mechanical vibrations, These will be absorbed by the antivibration pads in the shortest period

  • ATTITUDE TO DEEP DRAWING

    Characteristic of a material to be plastically forged through deep-drawing operations

  • BACK-GEARED PRESS

    This version of geared presses allows production with higher tonnage at reduced nominal speeds, thanks to an intermediate wheel-pinion gear system between transmission and eccentric shaft

  • BALL GUIDES

    Hydraulic-driven ball guides system installed on the working table to better handle very large dies

  • BENDING

    A mechanical operation to forge an object by applying different forces to it

  • BLANK HOLDER

    Pressure arm

  • BLANKING

    Auxiliary function of the safety light curtains. It allows the introduction of objects in the protected field of the light curtains, without stopping the press operations

  • BOLSTER PLATE

    Additional plate to reduce the distance table-ram

  • BOTTOM DEAD CENTRE (BDC)

    The point at which the mobile part of the die is nearest to the working table of the mechanical eccentric press

  • BRACKETS

    Device on rolls for rapid die tooling on the working table, especially in case of heavy dies

  • CALIBRATION

    An operation to set an instrument to improve its precision and accuracy

  • CLAMP FEEDER

    Strip feeding device that uses pneumatically and hydraulically-activated clamps

  • COIL

    Metal sheet coil

  • COIL CAMBER

    Strip curvature is measured by the deflection of the strip axle concerning the ideal line

  • COIL HOLDERS

    They contain the coil strip laterally to ensure proper unwinding

  • COILS

    Coils of metal sheet

  • COINING

    A plastic squeezing operation. Not suggested in the case of eccentric mechanical presses

  • COLD FORGING

    Cold metal stamping, or at room temperature

  • CONNECTING ROD ECCENTRIC SHAFT

    An eccentric device of a mechanical press. This device combined in its position with the eccentric shaft of the press allows the stroke change

  • CONTROL BOARD

    Bimanual control

  • CONTROL PANEL

    PEDESTAL or CONSOLE

  • CONVEYOR BELT

    System to convey scrap material or the pieces produced after stamping

  • CRIMPING

    Operation in which two different contiguous parts, thanks to interference, are joined together

  • CYCLE TIME

    Time required to produce a punched and cut-to-size piece. It indicates the period from one stroke to the following one

  • DECOILER

    A device that carries the strip to the straightener/feeder, thanks to spindle rotation

  • DEEP DRAWING

    Operation through which the strip is plastically forged and takes the form of a box or a cylinder

  • DESTACKER

    It supplies the line with the pieces that have not been worked, taking them from a pile of strips, to allow their continuous feeding

  • DIE

    Tool element used on a press for different operations like deformation, deep drawing, and shearing

  • DIE CUSHION BLANK HOLDER

    Additional device of the mechanical press, installed under the working table with an extracting function (in case of pieces stuck on the bottom side of the die). It works also as die cushion for deep drawing applications

  • DIE HEIGHT

    It indicates the height of the die. It is measured from the upper surface, in contact with the ram surface, to the lower surface in contact with the press table. Selection of "closed die" with ram at the bottom dead centre (BDC) and "open die" with ram at the top dead centre (TDC).

  • ECCENTRIC SHAFT

    The main shaft of a mechanical press is used to convert the rotatory motion, produced by an electric motor, into linear reciprocating motion (for stamping operations - through ram or slide)

  • ELECTRIC CONSOLE

    It integrates the electronic component of the press, PLC, and safety modules. Separated from the press.

  • ELECTRIC MOTOR

    The main engine of the eccentric mechanical press. Used to activate the whole kinematic system

  • ELECTRICAL CONTROL BOX

    It integrates the electronic parts, PLC, and security parts of the press

  • ELECTRONIC CAM

    The electronic system where, thanks to an encoder, creates some output signals, simulating more mechanical cams

  • ENCODER

    An electronic device used as a transducer for angle position and axle rotation speed

  • ENCODER WHEEL

    The wheel applied on the strip surface (after the feeder) and moved by the movement of the strip itself. Used to measure feeding lengths

  • EXTRACTION FORCE

    Force needed to remove the piece from the die

  • EXTRACTOR BAR

    The extracting unit made of a metallic bar, integrated with the ram of the eccentric mechanical press. Installed to pull out the piece which gets stuck on the die upper part

  • FEEDER

    Press feeding system to move the coil strip

  • FEEDER WITH BUILT-IN STRAIGHTENER

    Before moving the strip to the mechanical eccentric press, this feeding device is able to straighten the strip, thanks to a multiple rolls system. The layout of this feeding line is meant to reduce the space compared with the usual layout with straightener apart. Suitable for stamping with average speeds and steps

  • FLASH

    Defects produced by metal shearing

  • FLYWHEEL

    Wheel accumulating inertia (kinetic energy). It can prevent high or sudden speed variations, due to stamping operations

  • FLYWHEEL PRESS

    This version allows the use of higher speed with higher productivity, having no intermediate reduction between the drive shaft and the eccentric shaft

  • HOT FORGING

    Heated metal stamping

  • HYDRAULIC / HYDROPNEUMATIC CLUTCH

    A hydraulic clutch that allows a high number of engages per minute and is not subject to wear

  • HYDRAULIC CLAMPINGS

    Hydraulic devices to allow easy die fixing on the eccentric mechanical press

  • HYDRAULIC CONTROL UNIT

    It provides the oil under pressure to the hydraulic circuit

  • HYDRAULIC OPENING

    Feature of the decoiler, the spindle is hydraulically opened

  • HYDRAULIC PRESS

    Press that works thanks to a fluid pressure, usually hydraulic oil, to develop a force able to compress different materials, in order to compress and pack them

  • INNER COIL DIAMETER

    Inner diameter of the metal sheet coil

  • INVERTER

    An electronic device that, thanks to frequency variation, allows the speed regulation of an eccentric mechanical press

  • LAMINATE

    Material obtained through a rolling process

  • LOAD CELLS

    Load detectors. They are used to simulate the press work under load. An interface system with a PC is able to detect the curves of force consumption

  • LOADING CRADLE

    Decoiler device to allow easy loading of large coils

  • LOOP

    Situated between decoiler and straightener and between straightener and feeder. Used to balance the various speeds of the feeding machines to the mechanical eccentric press

  • LOOP CONTROL

    A system that controls the different speeds among the components of a feeding line

  • LUBRICATION

    With rolls or spray lubrication. It indicates a system that can make all stamping operations easier

  • MANUAL OPENING

    Feature of the decoiler, the spindle is manually opened by the operator through a manual system

  • MATERIAL OPTIMIZATION

    Actions taken to optimize the usage of material, while reducing scrap material

  • MECHANICAL CAM

    The device fixed on a rotation axle that excites specific limit switches. This creates some output signals used in the machine.

  • METAL SHEET

    Metallic material, available in coil or strips

  • METRIC WHEEL

    The wheel applied on the strip surface (after the feeder) and moved by the movement of the strip itself. Used to measure feeding lengths

  • MOTORIZED DECOILER

    This motor-driven device ensures that the material is fed to the straightener by the rotation of the spindle

  • MOTORIZED RAM

    Motorized device to allow easier ram regulation

  • MOULD

    Die

  • NOMINAL SPEED

    The speed at which the press can express its nominal power

  • OBI 

    Stands for open back inclinable. This press feature allows you to tip or incline the c-frame press, using gravity to let stamped parts fall out naturally. 

  • OUTER COIL DIAMETER

    Outer diameter of the metal sheet coil

  • PEDESTAL FOR CONTROL BOARD

    Mobile control board (bimanual control)

  • PILOTS

    In progressive dies, the precision of coil position in relation with the die, can be managed by pilots. They enter into holes, properly pre-sheared along the progressive die

  • PNEUMATIC CLUTCH

    Pneumatic clutch combined with springs

  • PRESS BASE

    For presses with inclination, it indicates the ground base on which the press frame is built

  • PRESS CLUTCH

    Unit of the eccentric mechanical press which transfers the flywheel motion to the rest of the kinematic system

  • PRESS FORCE

    Force of the press (Ton)

  • PRESS WITH INCLINATION

    Press equipped with inclination to release easily the pieces produced (release due to gravity)

  • PRESS WITH TRANSFER

    In this version, the strip is carried through a transfer device that is able to move the strip step by step

  • PRESSURE ARM

    Made of a metallic mobile arm and of a wheel which pushes the strip to ease its introduction and start a new session, while working in complete safety.

  • PRODUCTION RATE

    It indicates the number of pieces produced in a time unit; it is inversely proportional to the cycle time

  • PROGRAMMABLE SAFETY LIGHT CURTAINS

    Electronic safety devices to protect the working area of the press. The programmable functions are installed to improve the use of the press in case of productions in a single stroke with manual loading and unloading. The cycle starts automatically after two or three accesses (you can select it from the control board). During the cycle, the possible new interruption of the light flow will block the press due to safety reasons.

  • PROGRESSIVE DIE

    Die made of two or more progressive stamping operations. The complete operations combined together create the final piece

  • PUNCH

    Element of the die that, pushed by the eccentric mechanical press, carries out the shearing operation

  • PUNCHING

    Shearing, operation resulting from stamping

  • RAM

    The mobile part of the press. The mobile part of the die is fixed on the lower surface of the ram

  • RAM ADJUSTMENT

    Ram adjustment (by turning the screw between connecting rod and ram) which allows distance regulation table-ram to adapt the press to the die

  • RECESS

    In a C-frame press, it indicates the distance between the machine axle and the frame (rear side of the table)

  • ROD

    Mechanical linking element between the eccentric shaft and the ram

  • ROLL FEEDER

    Strip feeding device that uses two overlapping rolls, whose rotation activates the strip movement

  • ROTATING TABLE

    Used to convey, stroke after stroke, the different pieces to the die

  • SAFETY LIGHT CURTAINS

    Electronic safety devices to protect the working area of the press

  • SCRAP MATERIAL

    Waste material produced after stamping

  • SCRAP REMOVAL

    Scrap removal system after stamping operations

  • SHEAR

    Instrument to cut off strips, scrap material and pieces produced

  • SHEARING

    Operation of plastic deformation performed on metal sheet

  • SINGLE IMPRESSION DIE

    Die with a single impression to produce the requested piece

  • SOUNDPROOFING BOOTH

    It completely closes the stamping line, reducing the noise level of the system.

  • SPRING ANTI-VIBRATION PADS

    Anti-vibration device made up of one or more steel springs integrated in a case

  • STABILIZING CYLINDER

    Pneumatic system with the function of stabilizing the weight of the mobile part of the die, to optimize the kinematic motion

  • STAINLESS STEEL

    Metal sheet made of stainless steel

  • STAMPING

    Deformation of metals (metal sheet and similar). It is mainly divided into shearing and deep drawing

  • STAMPING LINE

    Production plant composed of decoiler, straightener, feeder, eccentric mechanical press and die

  • STRAIGHTENER

    The machine is normally located between decoiler and feeder (or integrated into the feeder), composed of various rolls. The function of correcting the coil curvature due to strip winding

  • STRAIN GAUGE

    Electronic system to measure the press force and the distribution of the forces on the table

  • STROKE

    It indicates the length of the alternate motion of the slide of an eccentric mechanical press

  • T-NUT

    Nuts located on the plate and on the ram surface to fix the die

  • TELE SERVICE

    Technical support in remote, performed by qualified staff with operations on the system

  • THREAD-CUTTING MACHINE

    This device can be integrated to the die to carry out tappings on simple holes or punched holes, during stamping operations

  • TIE-RODS

    Additional system to strengthen the press frame for particularly heavy applications

  • TOLERANCE

    It indicates the interval in which a certain operation is performed, compared to the theorical design value

  • TOOL

    Die or part of it

  • TOP DEAD CENTRE

    Point at which the mobile part of the die is farthest from the working table of the eccentric mechanical press

  • TRANSFER

    Device to carry the piece under the die

  • WORKING STROKE

    Distance from the BDC (bottom dead center). At this point, the press works at its nominal speed

  • ZIG-ZAG FEEDER

    Feeder with lateral movement to allow productions with multiple impressions to reduce scrap materials

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