If your business is in a metal fabrication industry such as roofing, HVAC, automotive, etc, odds are you need to fold and bend metal parts consistently. Sheet metal folding and bending machines are an integral part of this process. Used across various industries, these machines streamline the bending process, ensuring fast, efficient, and precise results for a wide range of products and project types.
Unlike traditional press brake machines, which shape metal without cutting, sheet metal folding machines use a specialized folding beam to create bends while the workpiece remains flat on the support table. This method minimizes material stress and is particularly beneficial for handling large blanks that would otherwise be challenging to maneuver. So, whether your business is working with thin materials or heavy-duty metal sheets, this blog will break down everything you need to know about sheet metal bending and folding machines.
The Main Features of Sheet Metal Bending and Folding Machines
Although the traditional press brake machine is ubiquitous in the sheet metal bending process, sheet metal folding machines work slightly differently. Depending on the level of automation, a workpiece is referenced against CNC-controlled backstops that are nested in the support table. A clamping axis—often referred to as the upper beam—is driven by servo-electric motors to a specific position to hold the blank in place. Once the material is clamped, the iconic swing-beam folding arm will drive in an arc, carrying the flange to the desired angle. On manual sheet metal folding machines, this referencing happens for each bend; on semi-automated systems, this reference step happens only once per side; on fully automated solutions, this reference occurs only once per part!
Click here to learn more about panel bending machines vs. sheet metal folding machines.
There are many levels of sheet metal folding machines, however, each will follow the same sequence for air-bending at a desired angle: position -> clamp -> bend. The unique process, one of the best features of sheet metal bending and folding machines, is perfect for flexible applications because the tooling is not specific to the material thickness or angle required. “Universal” tool geometries allow for unlimited angle possibilities and are rated up to the maximum machine capacity and height. Additionally, flanges are bent to the correct angle without scratching or sliding on the workpiece. Not only does this equate to better quality parts, but it also means that there is almost zero tool wear.
The Benefits of Sheet Metal Bending and Folding Machines
Machine Accuracy: One of the biggest benefits of sheet metal folding machines is that they clamp and bend the flange as it lies flat on the gauging table. Why is this important? You can expect the same quality at the beginning and end of a shift since the entire weight of the part is resting on the table. The CNC-driven backstops are incredibly precise, which pushes all blank tolerance out in the very first flange.
Faster Set Up: If you use press brake machines, you might have noticed they can take some time to set up. With sheet metal folding and bending machines, universal tooling makes set-up as simple as rearranging the segments. While manual adjustments are still required, tooling may not need to be removed during the process.
Sensitive Materials and Cosmetic Parts: The flat plane of our sheet metal bending machines eliminates friction by bending around the tooling instead of driving the tools into the material. On all but the most sensitive surfaces, there will be zero evidence of bend lines. For the most sensitive material, we offer a composite insert for the tooling to eliminate all possible markings.
Operator Ease: Looking to simplify your day-to-day operations? Sheet metal folding machines are safe and easy to operate. The machine control indicates to the operator what needs to be done and when. Folders allow companies to introduce bending to new operators, freeing up their most experienced employees to add value to other processes. Once an operator spends a day heaving around large parts on a press brake, they are the first ones in line to run to the folder and give their shoulders and back a break!
We are always looking to innovate our machines at RAS and are excited to launch our newest metal trim and precision fabrication automation offerings. If you’re looking to improve efficiencies within your roofing business, check out our newest innovation below.
The Types of Sheet Metal Bending and Folding Machines
Now that we’ve discussed what sheet metal folding machines are and how they can benefit your business, let’s quickly discuss the different types. There are several types of folding machines, such as the Multibend-Center and GIGAbend. On systems equipped with segmented clamping tools, a new part can be set up by rearranging the tool segments on the tool rail. Machines without automatic tool changers still simplify the setup process by placing tools in the proper position. This universal tooling allows for fast changeover between parts and makes it easy for a single employee to program, operate, and set up the machine for any compatible part.
The clamping tool of a sheet metal bending machine allows the folding beam to form an acute angle bend for hemming applications. That acute angle is then positioned under the clamping tool foot to close the hem to a specific height. This height can be selected for parallel hems, teardrop hems, or even open hems used in assembly.
Quality That Can’t Be Beat
If you’re in the market for a sheet metal bending or folding machine, RAS Systems has you covered. Our high-quality, German-engineered machines are fast, efficient, and precise. There’s no better tool for your fabrication arsenal to add value, increase productivity, and lower operating costs.
If you have any questions regarding our sheet metal bending and folding machines, please request a quote today!
FAQs
What is a sheet metal folding machine?
Sheet metal bending and folding machines bend sheet metal along a straight line using a clamping beam and a movable folding beam. Unlike press brake machines, they keep the workpiece stationary, making it ideal for handling large blanks with precision and minimal material stress.
What are the advantages of sheet metal folding machines?
Sheet metal bending and folding machines offer high precision, efficiency, and ease of use. They minimize material stress, handle large sheets easily, and reduce manual labor.
What are the different types of sheet metal folding machines?
The main types include manual folding machines (for small-scale jobs), hydraulic folding machines (for heavy-duty applications), and CNC folding machines (for high-precision, automated bending).
Founded in 1929, RAS builds metal bending, cutting, and forming equipment, as well as fabrication software, and is known for its high quality, reliability, and precision.
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