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sheet metal brackets

Updated on August 9, 2013

Mild steel angle brackets with a zinc plated and clear passivated treatment

Angle brackets made from mild steel, treated zinc plated and clear passivated.
Angle brackets made from mild steel, treated zinc plated and clear passivated.

Sheet metal angle brackets and their manufacture

Sheet metal angle brackets in whatever material can be very helpful when used on their own or within fabricated assemblies. They may simply be mild steel fixing angles to enable 2 components to be fixed together, perhaps a method of increasing the local thickness of a thin metal housing or a reinforcing point for wall fixing. Brackets and angles can be made from sheet metal in thicknesses from 0.7mm to 6.0mm thick. CNC punching machines can be used to punch out the brackets from flat sheets in a matrix known as a sheet nest. The holes, slots, angle notched or radius corners can all be added at this CNC punching stage. Once the components have been punched out they can have sharp edges or larger burrs removed before they are bent up to size.

Sometimes angle brackets can be sawed from angle section if a simple bracket is required. These angle brackets are stronger but limited in their detail so tend to be for simpler mounting angles.

The uses for brackets and angles is endless with the finished component often never seen to the end customer, look under the bonnet of any car and you will see plenty of examples of sheet metal pressed brackets doing a job that is never normally seen.

To see videos on manufacturing machines being used to produce bracket and examples of past projects please take a look below.

There are more examples of brackets and angles at http://www.vandf.co.uk/gallery/sheet-metal-bracket/


Manufacturing Videos showing the production processes used to manufacture sheet metal brackets

Here are a few videos showing different sheet metal brackets being CNC punched out and CNC bent up using Trumpf manufacturing equipment. These machines are perfect for manufacturing angle brackets from a range of sheet metal materials in volumes from just 1 or 2 samples right up to many thousands. There are so many designs and styles of brackets and angles that can be manufactured, most being bespoke to a customer's requirements that it's impossible to cover everything in one Hubb page but we have tried our best here to give you an idea of what can be manufactured with modern CNC techniques.

As we don't use dedicated press tooling to manufacture brackets we have the flexibility to produce them with our free standard tooling. The standard tooling can be either CNC punch press tooling e.g. circles, squares, rectangles and form tools or CNC press brake top and bottom V block tooling. As the press brake tooling is used as air bend tooling the same tooling can be used to bend anywhere from 179 degree to 28 degree inclusive angle. For a complete bend safe edge on a bracket we use special safe edge or dutch fold tooling. These methods of manufacturing enables our customers to change their minds on design details e.g. material type, thickness, holes and profile size without any impact on the tooling. This flexibility in production is typical of CNC machines and their impact on modern manufacturing method today.

Bending mild steel sheet metal brackets on a small Guifil CNC press brake

Electronic chassis bracket being bent on a Trumpf 7036 CNC press brake

Motor support brackets being CNC punched and bent on a Trumpf 3000R CNC punch press

Typical sheet metal brackets and angle designs, software models and finish brackets

I have listed below some great examples of brackets and angles to illustrate the vast range of parts that can be manufactured from sheet metal materials, flat bar and angle stock materials. Some of the photos are of existing brackets that have been manufactured in the past and some are 3D software models showing various brackets before they are put through CNC punching software and then into actual production. You can see from the range of parts CNC programmed that the CNC piunching process is very flexible (batches sizes from just 1 component up to many 1000's off) and can be used for all materials, thicknesses and sizes of angle and bracket.

Can you spot which 3D part is produced from the 2D CNC program?

Sheet metal bracket 3D models, CNC punching programs and real life sheet metal bracket case studies

Sheet metal fan support bracket modelled in Radan sheet metal software
Sheet metal fan support bracket modelled in Radan sheet metal software
Sheet metal oil tank corner protection bracket model in 2mm stainless steel.  The final bracket had a welded joint right along its length to help strengthen it in use.
Sheet metal oil tank corner protection bracket model in 2mm stainless steel. The final bracket had a welded joint right along its length to help strengthen it in use.
Mild steel bracket 3D model of a component used to support drainage pipes on conservatory systems.
Mild steel bracket 3D model of a component used to support drainage pipes on conservatory systems.
CNC punching part program showing the CNC punch tools that will be used to produce a mild steel bracket.
CNC punching part program showing the CNC punch tools that will be used to produce a mild steel bracket.
CNC punching part program showing the CNC punch tools that will be used to produce an aluminium bracket.
CNC punching part program showing the CNC punch tools that will be used to produce an aluminium bracket.
CNC punching part program showing the CNC punch tools that will be used to produce a 304 stainless steel alloy bracket.
CNC punching part program showing the CNC punch tools that will be used to produce a 304 stainless steel alloy bracket.
Mild steel bracket 3D model, the component is used to support a pump.  You can see the finished bracket 3 images below once they had been punched out of mild steel sheet, edge deburred and bent up.
Mild steel bracket 3D model, the component is used to support a pump. You can see the finished bracket 3 images below once they had been punched out of mild steel sheet, edge deburred and bent up.
Stainless steel sheet metal angle bracket part of a much larger stainless housing assembly.
Stainless steel sheet metal angle bracket part of a much larger stainless housing assembly.
Mild steel pump support brackets.  These brackets have been manufactured from 1.5mm thick mild steel and will then be zinc plated and clear passivated before being used in the assembly a pump housing.
Mild steel pump support brackets. These brackets have been manufactured from 1.5mm thick mild steel and will then be zinc plated and clear passivated before being used in the assembly a pump housing.
Spring stainless steel angle brackets used to hold lighting reflectors in place.  These parts have been produced from spring stainless steel coil, cut to size and then produced with simple fly press tooling.
Spring stainless steel angle brackets used to hold lighting reflectors in place. These parts have been produced from spring stainless steel coil, cut to size and then produced with simple fly press tooling.
Spring stainless steel angles brackets.  Again, these are used in light fittings but this time to hold a spinning reflector in place within a larger housing.
Spring stainless steel angles brackets. Again, these are used in light fittings but this time to hold a spinning reflector in place within a larger housing.
Mild steel sheet metal brackets used on top of a mild steel speaker cabinet.
Mild steel sheet metal brackets used on top of a mild steel speaker cabinet.
Copper angles CNC punched and CNC bent before being treated by acid dipping.
Copper angles CNC punched and CNC bent before being treated by acid dipping.
Stainless steel laser cut brackets for medical equipment.
Stainless steel laser cut brackets for medical equipment.
Mild steel fabricated spot welded angle bracket assemblies.  The 5 pence piece shows the smaller end of bracket work that can be achieved.
Mild steel fabricated spot welded angle bracket assemblies. The 5 pence piece shows the smaller end of bracket work that can be achieved.
Aluminium pre-anodised reflector material angles ready for small light fittings.  The blue colour is a peelable plastic film that will be removed by the customer when fitting the reflector into the light housing.  It helps to keep the reflector clean
Aluminium pre-anodised reflector material angles ready for small light fittings. The blue colour is a peelable plastic film that will be removed by the customer when fitting the reflector into the light housing. It helps to keep the reflector clean
Mild steel zinc plated and colour passivated  brackets.
Mild steel zinc plated and colour passivated brackets.
Zintec angle brackets CNC punched and CNC bent using Trumpf manufacturing equipment.
Zintec angle brackets CNC punched and CNC bent using Trumpf manufacturing equipment.
3mm thick mild steel brackets.  These ones are used to hold up light fittings on track systems for exhibition stand lighting.
3mm thick mild steel brackets. These ones are used to hold up light fittings on track systems for exhibition stand lighting.

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    • sheetmetal1 profile image
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      sheetmetal1 3 years ago from Fareham, Hampshire, UK, PO15 5SD

      Hi Tim,

      there can be many manufacturing processes for a bracket when it is made from sheet metal. First you need to cut the shape of the bracket and put in any holes or cut outs that might be needed, this is normally carried out by a CNC punch press or a laser cutter. Simple brackets could just be cut to size on a guillotine. Any bends could be folded by using CNC bending machines or fly presses with simple V bend tooling. Finally the brackets may need to be protected in some way e.g. zinc plating, painting, anodising depending on the material and the protection needed. I hope this helps.

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