Among the equipment used for metal processing, the hydraulic sheet bender has gained sufficient distribution. It belongs to the category of universal devices and allows you to manufacture parts with different parameters. The machines are used both for creating complex reliefs and holes on the surface, and as a powerful press.
Description
Hydraulics is used on industrial equipment, which is characterized by high productivity and the ability to process material with a thickness of about 3-4 mm. As an addition, presses and rotary beam elements act. The machine is set up using program control or manually, depending on its type.
In large-scale production, CNC hydraulic sheet bending is most often used. This is facilitated by the possibility of obtaining in a short time many products in accordance with the specified parameters and with a minimum amount of rejects. For lessFor large-scale production, a device with program control is also relevant due to the storage of parameters of products of any shape. The release of the selected type of product begins with the press of just one button. In some cases, it becomes necessary to replace the matrix, but this takes no more than five minutes.
Devices equipped with software can be quickly configured to produce new items using a remote display, a control panel located on the machine, or a special program. The four-roll hydraulic bender is easy to operate and can perform tasks that other varieties cannot do. With it, you can create parts that have a square, oval and triangular shape.
Design
Despite the fact that metal bending presses are based on a single scheme, they may differ in the list of additional functionality, memory capacity, dimensions, templates used and power.
The production of hydraulic bending machine consists of many stages, the basis of the design is the following elements:
- data system;
- controller;
- sensors that track the speed of movement;
- hydraulic and cylindrical elements;
- matrix;
- moving traverses and guides;
- bed.
DIY hydraulic sheet bender
The bending machine, which you can make yourself, is based on a special traverse. Suchthe equipment allows processing metal sheets with a width of 50 cm. Bending is carried out by means of traverse pressure, while the base of the workpiece is fixed in a vice or with clamps. To obtain a bend of 90 degrees, it is recommended to supplement the design with an inlay in the form of a metal strip. Listogib hydraulic includes a punch and a matrix. The latter is installed on the blanks, and the matrix acts as a substrate for the material.
The first step in the manufacture of the machine is the calculation of the applied force and the cost of materials, ordering components, determining the dimensions of the structure and the total mass. When fixing parts, it is worth limiting the use of welding, since such joints are not designed for alternating loads. Items that cannot be done at home must be ordered in advance from the miller.
A hydraulic T-Bender can be made at minimal cost, this requires several pieces of a large I-beam, channel, bushing, spring rings, punch and die materials. The frame of the structure is made of an I-beam, the lower part of which is fixed on the channel. The stand for the bender can be made from any suitable materials, its dimensions are selected in accordance with the installation location of the device. The upper movable part of the structure is equipped with a jack. The die angle must be less than 90 degrees. As a clamping bar, a brand can be used, on which metalplates. Holes are drilled in them with a size slightly larger than the diameter of the bolt.
The spring should raise the bar by 6-8 mm, if necessary, it can be cut. Then a bolt is inserted into the hole of the bar, the spring is fixed, and the nut is screwed. Working with a bender can be simplified by adding a jack valve handle in the form of a valve.
Working principle
The principle of operation of a hydraulic machine is to issue an element from a workpiece in the form of a strip or sheet in accordance with the specified parameters. Adjustment of the device is made depending on the required characteristics. Of particular importance are the lowering distance of the clamping mechanism, the return speed, the degree of pressure and the speed of the traverse. The press is suitable for processing metal with a thickness in the range of 0.5-5 mm. There are also narrow profile varieties designed to process material with a greater thickness.
What you need to know
There is a possibility of residual deformation at the bending point, which is controlled by adjusting the feed rate. Thus, even at high speed, material breakage can be avoided. Electromechanical and pneumatic type devices produce a fairly high level of noise during operation, while manual or CNC equipment does not have this disadvantage.
Features
Hydraulic bending machine is suitable for the production of products with a large degree of bending, as well as for obtaining semi-circular andconical shape. Devices of this type do not have smooth adjustment and high power, so they are not always convenient when working with non-ferrous metals and sheets of thin material.
Among the varieties of sheet benders, it is worth highlighting crank equipment, which is based on an electric motor with a drive that ensures the movement of the matrix as a result of shaft rotation. Such equipment is controlled by a lever or pedals, the setting can be either software or manual.
How to choose
Hydraulic sheet bending machines are quite expensive devices, so special attention should be paid to their capabilities and characteristics. The functionality should fully ensure the fulfillment of production tasks. The purchase of CNC equipment is not always justified for workshops and small workshops, as the costs will pay off for too long.
There are key characteristics to consider when selecting machines. These include the following:
- possibility to use CNC;
- complete with profiles and inserts;
- distance between work stands;
- traverse height.
Varieties
Hydraulic sheet bender can be produced in stationary and mobile versions. The latter is distinguished by a smaller range of processed metals, but is not without advantages, such as minimal energy consumption, low weight, and the ability to move to various objects.
The most widely used stationary industrial bending machines. This is due to the possibility of using various blanks and obtaining parts with the required configuration. They are also convenient when it is necessary to produce volumetric batches of products. The use of programs of varying complexity ensures the release of material with sufficient thickness, while not losing the accuracy of processing.
