Category Archives: Bending Machine

Sheet Metal Bending Machines – Rolling, Wiping, U-Bending, and Bottoming

When bending sheet metal, there are many things that you should take into consideration. There are four basic bending techniques: Rolling, Wiping, U-bending, and bottoming. Each one has its own set of advantages and disadvantages. In this article, we’ll explore all four methods and help you choose the best one for your needs. Read on to learn more! Hopefully, this article has provided you with useful information.

What is Rolling Technique in Sheet Metal Bending Machines?

A rolling method in a sheet metal bending machine should be performed with safety features. For example, the rear bending roll should be hydraulically operated and equipped with a safety trip cable. Ideally, the machine should be equipped with a safety stop button and a roll-tilting mechanism. These safety features help reduce the chance of worker injury. Additionally, the control panel should have an emergency stop button and key lock on/off power switch.

Three-roll bending machines have two fixed rolls and one adjustable roll. Two of the rolls pinch the sheet and a third one bends the metal. This makes it possible to form full tubes with little or no gap in the middle. Crowning occurs when the rolls have a slightly larger diameter in the middle than the rest of the metal. Crowning may be overcompensated with shim stock. Crowning can create a gap at the ends of thin metal. If necessary, the ends of the rolled part may be welded closed to create a tight cylinder.

How Wiping Method is done Using Sheet Metal Bending Machine?

A wipe method is used for forming bent edges on sheet metal. The sheet metal is pushed onto a wiping die and the wipe die determines the inner radius of the bend. The inner radius of the bend is also dependent on the slack between the wipe die and the punch. The inner radius of a bend should be equal to four times the thickness of the sheet, excluding any excess material.

The process of wiping is faster than folding, but it increases the risk of damaging the sheet, especially when a sharp edge is involved. Wiping is used for panel products with small profiles and is typically performed on press brakes. Wiping is one of four variations of bending, and there are many different types of bending machines. Air bending is another type of bending while bottoming and coining are two more. The machine lifts and hugs the sheet metal and bends it by pushing and pulling the die to a specified angle.

What is U-bending Method in Sheet Metal Bending Machines?

A sheet metal forming machine is a versatile tool that creates a variety of shapes from sheet metal. This process reduces the cost of making parts and improves strength while simplifying the assembly process. Its versatility makes it an ideal machine for a range of metal fabrication applications. Because of its ease of use, the U-bending sheet metal bending machine is an excellent choice for many manufacturing environments.

While operating a U-bending method, be sure to carefully align the machine to avoid warping or scratching your finished product. Before starting the bending process, clamp your sheet metal with a vice in the form blocks. Make sure to keep the bend line parallel to the guide angle of the forms. Alternatively, enlist a colleague or friend to stabilize the sheet metal. Once the sheet metal has been clamped, start tapping between the bend lines.

What is Bottoming Technique using Sheet Metal Bending Machines?

Compared to traditional bending processes, bottoming reduces spring back and improves accuracy. Typically, different bending angles and sheet thicknesses require different tools. Bottoming is done by reducing the force applied to the tool during the bending process. Below are three common examples of different bottoming techniques. Here’s a breakdown of the pros and cons of each one. The main difference between bottoming and standard bending is the process of determining the correct opening width.

During bottom bending, the punch and die are brought together so that the tip of the punch makes contact with the material. When the punch makes contact with the material, the metal is not fully bent, allowing for spring back. Because of this, it’s vital that operators understand the different bottoming methods. 

In Conclusion

Some typical sheet metal bending methods are shown above. For a variety of uses, these may be accomplished with sheet metal bending equipment. And in order to execute bends well, it is vital to comprehend these techniques.

Factors to Consider When Buying a Bending Machine, and The Different Types

A bending machine is a forming machine tool that is used for manufacturing a bend on a workpiece. The tool bends or shapes metal by using a linear or rotating movement. Once the workpiece has been bent, it is placed in the bending machine’s die and the tool is moved to the next step. A bending machine is commonly found in manufacturing plants, automotive companies, and manufacturing shops. You can read more about the machines below.

What is Electric Pipe Bending Machine?

When purchasing an electric pipe bending machine, there are several factors to consider. You must understand the strength and tensile strength of the materials that you plan to bend. These numbers are essential for selecting the right bending die and the correct bending machine for your needs. You should consider the bend radius of the pipes that you plan to bend as well as the materials that will be shaped. The bend die is the most important component of an electric pipe bending machine.

The basic features of an electric pipe bending machine are the bend die, wiper die, mandrel, clamp, and pressure die. The bender can bend any material. It can also bend thick steel or conductor pipes. It can be used to create simple and complex shapes and is capable of working with aluminium, steel, and stainless steel. It has dies and is easy to operate.

Hydraulic Pipe Bending Machine

What is Manual Pipe Bending Machine?

A quality manual pipe bending machine should have several options for bending. It should be capable of measuring the length and thickness of the tube, as well as providing an accurate bend. The machine should also be easy to use, as most of them are operated by hand. There are many benefits of a hand tube bender. With a manual tube bending machine it is not difficult to incorporate changes in the tube geometry. It is also cost-effective to purchase a dedicated machine if you need to make significant changes. 

What is Cold-frame Bending Machine?

A cold-frame bending machine is an industrial machine that can perform level and vertical bending of a pre-curved three-dimensional plate. The machine uses intelligent numerical control to complete bending tasks simultaneously. It has an advanced chord measurement system and an integrated geometric coordinate detecting device. Using this machine, you can save time and money. This machine also reduces the waste of material.

The basic components of a cold-frame bending machine are a die clamping device, a movable arm, and a support distance regulating mechanism. The movable arm has a central opening for the operator to check the radius and other parameters. The machine is also equipped with automatic transport. Cold-frame bending machines are generally available in different power outputs. These machines are popular with users because of their ease of operation.

What is CNC Bending Machine?

When you are selecting a CNC bending machine for a certain application, it’s important to understand the physics of how a CNC bends a given piece of metal. This machine has four times the deflection and fewer shims required. A smaller machine, on the other hand, requires less shim adjustment and can produce the same finished parts more quickly. One of the factors that affect bending machine deflection is the grade of the material. Stainless steel and soft aluminium, for example, require more load than low-carbon steel. The manufacturer of a CNC bending machine will have a tonnage table that will tell you the exact tonnage needed per foot of material.

Traditional bending machines require trial and error to set up the metal sheet. The operator must hold the sheet tightly so that it doesn’t shift up. Additionally, multiple bends in a single sheet require adjusting the gauge manually. Changing the opening is also a major safety concern, so be sure that the lower mould isn’t touching the material. Likewise, there should be no one working behind the bending machine while it’s operating.

The Bottom Line

We are committed to offering a distinctive selection of Hydraulic Pipe Bending equipment as one of the most reputable companies in the sector. There are several ways in which these devices vary from others. They have strong and largely indestructible dies. The market for hydraulic and electric pipe bending equipment is expanding quickly. Additionally, hydraulic pipe bending devices have several uses. Also, the information provided above will assist you in determining the best pipe bender for your requirements.