Sheet Metal Machines and Metal Processing Equipment

Sheet metal machinery: which machine type does what

Sheet metal fabrication splits into cutting and forming, and a different machine handles each job. KNUTH USA carries four machine types as separate categories with full specs on every model.

• Sheet Metal Press Brakes force the blank into a bottom die with an upper tool. Heaviest tonnage, tightest inside radii, programmable back gauge to set the flange. Shops also call them brake presses or bending presses.
• Sheet Metal Folding Machines hold the blank down and swing a folding beam up. Long flanges, trays and light gauge panels run faster this way.
• Guillotine Shears shear a flat blank across the full bed length, hand powered as a stomp shear or motor driven.
• Plate Rolling Machines pass plate through three or four rolls to make cylinders, cones and tank shells.

From flat blank to finished part: the order of operations

Most fab shops run the same route: cut first, form second, dress the edge last. Straight cuts in flat stock belong on the shear, while profiles, holes and internal cut outs go to a fiber laser cutting machine or an industrial plasma cutting machine. On the forming side the geometry picks the machine: short tight flanges on the press brake, long or light gauge flanges on the folder, anything round on the plate roll. Tube and structural work moves to tubes and profile processing, forming jobs to machinery presses.

Manual, NC and CNC: picking the level of automation

A manual machine has no control at all, which is often exactly right for a maintenance shop, prototype work or a school lab. NC models drive the back gauge and the ram to a set position. A CNC machine holds the whole bend sequence in a program, adjusts crowning automatically and repeats the same angle across the run, so setup time and scrap drop out of the cost. Existing machines can be retrofitted with sensor kits and IoT gateways.

Materials and gauge range

These machines run mild steel, stainless, aluminum, copper and brass. Gauge by itself will not tell you whether a machine is big enough, because tensile strength drives the tonnage. Stainless takes considerably more force than mild steel at the same gauge, aluminum takes less. Bed length, gauge and alloy have to be read together, and every model page states the rated capacity in gauge and inches.

Tooling, dies and accessories

On a press brake the punch and die pick the inside radius, and a segmented clamping beam lets you fold a closed four sided box. Folders use a segmented folding bar, and shears run blade sets that go back to the grinder instead of the scrap bin. Dies, blade sets and accessories go on the same quote as the machine.

Industries and shop types we supply

Job shops and weld shops are the largest group, followed by HVAC and sheet metal contractors, trailer and truck body builders, enclosure builders and plant maintenance. Vocational programs and community colleges buy manual shears and folders because a student can watch the cut and the bend happen. On the production side, suppliers to machinery builders, packaging equipment makers and aerospace shops run CNC equipment.

Why KNUTH USA

KNUTH is a machine tool supplier, not a machine builder. We pick proven series and quality-check every machine before delivery. Machine stock and the parts warehouse sit in Lincolnshire outside Chicago, and Houston covers the southern territory with sales and service. You deal with a US point of contact and you can see a machine in person.

Service, parts and lead times

After the sale the Americas service team looks after the machine, backed by local service. Common wear parts ship out of Lincolnshire, special items come straight from the manufacturers of the components. Parts supply is committed for ten years across the company. Installation, startup and operator training can be arranged on request, and the quote spells out what is included along with the lead time. Contact us by email or phone and we will size the machine to the parts you run.

Further Machine Categories at a Glance

Here is an overview of our machine range. Select a category to learn more about individual machines and their technical data.