Creating a machine for bending sheet metal

The use of sheet metal in the construction of individual houses has become widespread, so for this purpose, machines for sheet metal bending by oneself are required.

The use of this material is explained by high processability, relatively low price and high reliability of metal structures.

In the arrangement of the roof, it is necessary to make ebb for water from a metal sheet.

Products of this profile can be ordered from third-party artists, but it will be cheaper and faster to produce by oneself. For this purpose, a sheet bending machine is used.

Structurally, such an aggregate can be simple. All the necessary materials and components are easy to find in the stores of household goods.

Sheet metal bending

According to the physical characteristics of metals and alloys, you can only bendplastic materials.

Products made of cast iron or hardened steel for bending are completely inappropriate, because they have low ductility and high brittleness.

The bending operation of a certain section does not require cutting or heat treatment.

Sheet metal bending is an action, as a result of which a metal sheet assumes a certain volume shape.

It is necessary to know that when the sheet is bent, the outer layers of the metal are stretched and the inner layers are compressed. If a too thick sheet is put into the machine, a crack can form on the bend from the outside.

To avoid this, the source part must be prepared. For this purpose, it is subjected to a certain kind of heat treatment - tempering or annealing. Such operations are rarely performed.

Basically, for bending are selected such products that can be manufactured using this technology.

Bending has a number of advantages over a welding connection or other way of manufacturing a part.

These include:

• high performance;
• product has no seam and is integral;
• does not form rust at the folding site.

Among the drawbacks, it should be noted that the process of manual bending requires considerable work.

If you perform manual bending sheet metal, then you will need a locksmith, hammer and mallet. High quality with such a set of tools is difficult to achieve.

This method is not suitable for regular production of parts without cutting and welding.

When household products require high quality products, the best solution is to make a sheet bending machine with their own hands.

Today, the equipment for individual use and for small businesses is produced on an industrial scale.

The machine for bending sheets or for cutting them can be purchased at the store. With a limited budget it's easier to make homemade.

Bending equipment

The bending process of metal is the final step in the process of manufacturing the part. If it is executed with a low quality, the part will be defective.

All previous technological redistribution from cutting to cutting will be in vain. As a result, the production company will incur losses.

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In order to make this situation unacceptable, it is necessary to produce reliable and productive units.

Such a machine is called a sheet bender or a pressbrake.

Today the market offers the following types of sheet bending:

• hydraulic;
• mechanical;
• pneumatic;
• manual.

Hand-held machine is used for single-piece and small-lot production.

On the production lines of large companies, multifunctional units are installed, which are configured for a specific operation.

Guillotine shears are used for cutting workpieces. To impart the desired shape to the resulting blank, pressbrakes with pneumatic punches are used.

The workpiece is placed between the die and the punch, which is driven by a pneumatic drive. In this way, metal sheet parts up to 5 mm thick are formed.

The machine with a rotary press is designed to handle small parts with complex terrain.

The bending equipment is divided into mobile and stationary. Stationary machines are used in large enterprises for the production of large volumes of products.

Mobile units are designed for the manufacture of individual parts at a construction site or when repairing an object. A mobile sheet metal bending machine can be manufactured by hand.

Many years of practice shows that the self-made unit, manufactured according to all the rules of the engineering approach, is in no way inferior to the factory assemblies.

To assemble such a machine, a certain set of materials and tools is required.

Листогиб сами руками

Unlike prefabricated units, which are designed for processing of metal of great thickness, self-made sheet bending is used in making piece and small-scale parts.

Products are most often bent from sheet aluminum, copper and sheet steel. The optimum thickness of the sheets varies between 0.5 and 0.8 mm. With a sheet of greater thickness, it is difficult to work.

, that here is used a manual drive, the muscular strength of a person.

To make the product more durable, an additional reinforcement rib can be formed with the machine. And at the same time avoid cutting the strips for this rib.

The mechanism of the bending machine is based on a simple principle. The workpiece is fixed on the bottom of the clamping frame. A workpiece is a sheet of metal.

The protruding part of the sheet to be bent to a certain angle lies on the turntable. It is only necessary to turn this beam and the metal will "bend".

The swing beam is raised and lowered by hand. In prefabricated machines, this function is performed using an electric motor or a hydraulic press.

The maximum bending angle can be 180 degrees. This is done in two steps. For one operation cycle, you can bend the sheet 120 degrees.

Depending on the design of the home-made machine, the workpiece is pressed in various ways. In the simplest mechanism, a steel corner is used.

It is recommended to use a corner with a shelf thickness of at least 5 mm.

When manufacturing a press frame, you will need a welding machine for cutting parts by size and drill, in order to drill holes for the mounting bolts.

Make all the operations with your own hands is not difficult. Provided that there is a certain skill in working with metal.

You only need to properly prepare for the assembly of the bending machine.

Base for

The main element of the metal bending machine is the base. As a basis, you can take a channel, the length of which is selected at the discretion of the master.

In order to provide the necessary conditions for work, this channel is attached to the frame. Or welded to it legs. It is important that this design is highly resistant.

Clamping device

When manufacturing a clamping device with your own hands, it is recommended to use two corners - # 5 and # 3.

They must be connected together by welding in such a way that a rigid figure of the triangle is formed in the section.

This configuration provides rigidity and reliability of the clamping.

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Crimp device

Crimping punch is most often made from corner number 5.Its length should be less than that of a clamping device by 10 mm.

The reinforcing lever can be made from a round rod or reinforcement. It has the shape of a brace and is welded to the punch.

This connection must be made with high strength, since the load on it is maximal.

Roller knife

In some situations, when working with rolled metal, it becomes necessary to cut off the finished products.

For cutting metal after machining, a roller knife is installed on the bending machine.

This node complicates the design as a whole and therefore it is rarely used.

Service and safety instructions

The bending machine assembled with its own hands must have the following characteristics:

• stability;
• easy operation;
• security.

By its design, the metal bending machine is a mechanism of increased danger.

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When operating the machine, observe the relevant operating and safety instructions. Especially when cutting blanks.

Before starting work, it is necessary to check the integrity of the main components.

Access by unauthorized persons to the machine must be strictly limited.