Metal Cutting Guillotines / More Info

Sheet Metal Cutter
Sheet Metal Cutter

Metal Cutting Guillotines / More Info

Metal Cutting Guillotines

Metal cutting guillotines for the cutting/shearing of sheet metal, or steel plates.

Choosing a Metal Cutting Shear

When choosing a metal cutting guillotine,

There are a variety of factors that will influence your selection of a metal cutting shear, such as  :

  • Thickness of plate or sheet to be cut
  • Variations of steel type to be cut, this might effect grade or hardness of guillotine cutting blades
  • Speed of production required, mechanical direct drive guillotines have more strokes per minute than a hydraulic guillotine
  • Is a swing beam action shear with a fixed cutting rake angle the correct machine
  • Would a  variable rake cutting action be a more suitable choice
  • Length of stroke of the shear back gauge system, 600mm, 750mm, 1000mm ?
  • Rear thin material sheet pneumatic operated support system, for cutting thin sheets

Hydraulic Metal Cutting Shear

Hydraulic metal cutting shears are used for heavy duty metal fabrication work,
ie sheet materials above 4/6mm thick upto approx 25mm

Hydraulic heavy duty metal cutting guillotines are slower in strokes per minute than a mechanical sheet material guillotine, but generally offer features of value, such as :  longer length stroke back gauges, variable cutting rake angles, stroke length limitation.

Mechanical Direct Drive Guillotine

Mechanical direct drive (DD) guillotines tend to be used for lighter sheet metal working.

Thickness capacities in the order of 1mm to 4mm, with strokes per minute upwards of 30spm. power back gauge with digital readout, pneumatic sheet support systems,  are generally viewed as a desirable options.

3 Styles of steel plate and sheet material guillotines

  1. Swing Beam : Fixed angle blade rake guillotine
  2. Variable Rake : Guillotines are of vertical action, allowing flatter blade cutting angles
  3. Guided Frame : Shears are vertical action with a fixed cutting rake angle

‘Swing Beam’ Guillotine :

Offers a fixed cutting rake angle, the fabricated top blade carrying structure is mounted to the rear of the machines side frames,
into eccentric bearings, it is the rotation of the eccentric bearing(s)  done via a handle on the side of the machine, that moves the fabricated top shear beam forward or back to create the blade gap.

The fixed rake angle differs between manufacturers, a rake angle under degrees is preferable to avoid excessive curl of the cut piece,
high cutting rake angles of  3° to 4° may result in excessive curl to the cut piece.  High rake angles [+] indicating lightly built machines, the flatter the rake angle, the more frame rigidity required.

‘Variable Rake’ Guillotine
The  top blade carrying beam is attached to 2 hydraulic cylinders, by varying the stroke of each of the 2 hydraulic cylinders the top blade beam
is inclined creating the rake angle.  this ability to change cutting rake angles assist in the reduction of curl in the cut piece.

‘Guided Frame’ Guillotine 
The top cutting beam is held at each end in vertical slides, therefore the cutting action is vertical, the cutting beam has a fixed cutting rake angle. This system is used in all direct drive mechanical steel cutting guillotines.

Guillotine Controllers

Touch & Go Back gauge, type in dimension press go button, backgauge finds position, or a NC control, offering cutting programs, cut counter etc.

Cutting Lines

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Sheet Support System

If cutting thin materials, thin sheets bend and dip below the backgauge system.

Cut Sheet Rear Conveyors

Information coming soon.

Guillotine Blade Quality

The chosen cutting blades of a steel cutting guillotine need consideration. Is the steel you are cutting carbon or stainless steel. Note: *Manufacturers will fit as standard metal cutting guillotine blades for carbon steel cutting. These blades are very hard and produced to predominately give wear resistance, however because of their hardness, they are likely to chip if used for cutting steels with the higher tensile strengths, like stainless steel.

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  • Standard Specification
  • Optional Equipment