Press brakes Durma AD-R series. CNC sheet bending machines General information about the installations and the principle of their operation

Hydraulic sheet bending is used at various production enterprises for bending sheet metal using a cold method with strict adherence to specified bending angles.

1 How did hydraulic sheet bending machines come about?

Initially, the world industry produced mechanical and manual sheet benders. They were simple and reliable in operation, had a simple design and did not require excessive costs for their production. It is clear that it did not provide the necessary bending accuracy, and to use it it was necessary to use considerable physical force. Mechanical equipment also had a lot of shortcomings:

• high degree of vibration and noise during operation;
• low quality of manufactured products;
• increased risk of injury to the installation operator;
• high consumption of electrical energy;
• difficulties when it is necessary to re-adjust machines.

Simultaneously with mechanical presses, pneumatic equipment began to be used for bending metal workpieces. It was used rather limitedly, since for the operation of such units it was necessary to supply compressed air to them through a special line. And the load force that they could provide was relatively small.

A real breakthrough in sheet metal bending was the appearance in the mid-20th century of hydraulic presses, which were distinguished by low electricity consumption, a high level of work safety, almost impeccable reliability and excellent quality of manufactured products.

Behind last years The standard hydraulic press brake has undergone many changes. Nowadays, it is equipped with innovative devices and mechanisms that greatly facilitate the procedure of bending metal workpieces. These include the following devices and developments:

• a graphical user interface that allows the software control of the machine to independently determine and set the bending sequence;
• equipment for adjusting traverse speed by electronic devices;
• protecting the operator from injury;
• bend angle control indicators.

List modern optional equipment, installed on hydraulic sheet benders, can last quite a long time. We will also talk about many special mechanisms and intricacies of using CNC sheet bending machines, describing their popular brands.

2 General information about the installations and the principle of their operation

The described equipment is usually used in production in the following situations:

• to obtain products of ideal quality and accuracy;
• as one of the stages of the industrial processing of metal blanks with a thickness of 3.5 millimeters or more;
• for fast and inexpensive bending of metal sheets less than 3.5 millimeters thick;
• when performing operations on bending products of the same type (when the tool settings do not need to be changed too often).

Hydraulic sheet benders can be stationary or mobile. The former are used in one place; they can process large volumes of metal. And the second, mobile ones, can be used at different sites. As a rule, they are purchased by small manufacturing companies. Both the first and second ones operate on the energy of hydraulic cylinders, which eliminates the need for effort on the part of the operator of the sheet bending machine.

The essence of the operation of the described equipment is to ensure the specified values ​​of the stroke (working) of the installation traverse and the required force. A traverse is defined as a rigid steel beam. Devices for specific bending modes are mounted on it, taking into account the characteristics of the workpiece being processed.

The traverse moves under the constant control of special linear sensors. Usually, two of them are installed on sheet bending machines (one “monitors” the right side of the beam, the other - the left), which guarantees the uniform movement of the traverse. Most bending machines also have a programmable back stop. It allows you to obtain a bendable metal edge with certain geometric values.

Today, sheet bending machines on hydraulic cylinders are considered indispensable in the production of materials for hull construction, electronic products, instruments and household appliances, vehicles and special vehicles. They are also necessary for the manufacture of bent products used in mechanical engineering and machine tools. When installing additional mechanisms, hydraulic sheet bending machines can easily process cylindrical and conical surfaces of different diameters.

3 Algorithm for bending metal on sheet bending machines with hydraulic cylinders

The technology for processing sheet metal blanks using the equipment in question does not have any particular difficulties. At the same time, it ensures maximum productivity of sheet benders and high safety of work.

In general, the process of bending workpieces on the units of interest to us is carried out in seven stages:

Press brakes with additional mechanisms can, of course, operate with some additional steps. But she herself is flexible metal products is performed exactly according to the described algorithm.

Let us add that the processing of workpieces on sheet bending machines with hydraulic cylinders is described by three main parameters - the working length of the machine, the power of the developed load on the part, productivity over a certain time, as well as several additional characteristics (the distance between the racks of the unit, the speed of work operations, the amplitude with which it can move traverse and others).

4 LGSG-28 machine – brief description

Press LGSG-28 Lipetsk plant for the production of special profile bending equipment is very popular among Russian companies, which are engaged in the production of various corners, as well as other products for the construction industry. This unit is capable of processing sheet metal up to 3 millimeters thick and up to 2.5 meters long at the highest level of efficiency.

• slight noise during operation;
• basic controls;
• excellent ratio of functionality and cost;
• low consumption of electrical energy;
• the ability to perform bending in manual and fully automatic modes;
• quite high versatility.

LGSG-28 When bending, it develops a force of up to 20 tons and provides a bending angle of up to 105 degrees. The overall dimensions of the machine are 280 by 80 by 200 centimeters and weighs approximately 2 thousand kilograms. This equipment allows you to obtain a minimum bend of four centimeters.

It should be noted that LGSG-28 It breaks very rarely. But even in situations where there is a need to repair it (replacing components that have naturally failed), users do not have problems with “updating” the machine. The Lipetsk plant produces in sufficient quantities a full range of spare parts for its sheet bending machine.

5 Overview of numerically controlled press brakes

Hydraulic units for bending metals these days are equipped with CNC systems. Such equipment is particularly accurate and efficient in performing work. The domestic market offers sheet metal bending machines from many well-known European manufacturers. We will tell you a little more about some companies and their products.

Plate benders of the Portuguese brand are considered popular Adira, produced in the city of Porto. Russian enterprises purchase equipment from the series RN(models 16060, 30060, 40070, 50070, 60060, 110080, 135070, etc.), which is equipped with motors of different power (from 15 to 110 kW), bending speed (from 6.5 to 10 mm/sec) and pressing force ( from 160 to 2000 tons). All of it is characterized by the following operational advantages:

• compact dimensions of hydraulic stations;
• stabilized monoblock durable traverse;
• the presence of two servo valves with automatic control;
• hydraulic and electrical overload protection;
• simple adjustment of the traverse lowering indicator and programming of all values ​​without exception technological process;
• high-performance numerical color controllers with Russification;
• powerful stop (rear) with four controlled axles.

Units under the brand are also well known MetalMaster(models 2563К, HPJ-к 1340, 2580, 32200), having many functional capabilities, reliable hydraulics, modern equipment and a design made of heat-treated welded components. These sheet bending machines are controlled by a numerical complex ESTUN, allowing step-by-step programming of any number of working operations in inch and metric coordinate systems.

Modern factory equipment in most cases necessarily includes a CNC press brake: such machines allow you to bend metal workpieces quickly, accurately and with minimal costs, both time and financial. Among the products manufactured by DURMA companies (Turkey), experts recommend paying attention to AD-R presses, which are distinguished by their versatility of operation and high precision of operations.

Economical CNC Press Brake

DURMA brand products are designed for a wide range of customers, and therefore the company pays special attention to reducing the cost of equipment that is in greatest demand. It was within the framework of this program that Turkish designers developed the presses of the AD-R line.

CNC press brake DURMA:

• True Innovation
• A combination of efficiency, accessibility and simplicity
• The best ratio of “complexity of work/cost of equipment” in the competitive range
• Intuitive CNC control
• Special control unit design and software will ensure ease of setting up the operation of the equipment, and control will be possible even for untrained workers.
• Excellent bending quality, easy input of bending angle values ​​and other operations
• Robust cast construction is the hallmark of DURMA equipment
• The work is simple and comfortable in all respects.
• Increased clearance and overall working space optimizes work with complex, multiple bends
• Designed and produced for the low-price segment of the market, while corresponding to the “Premium” class
• has virtually no restrictions on the complexity of processed workpieces;
• has a high level of functionality;
• belongs to the category of highly profitable equipment;
• has an impeccable level of quality and all the necessary manufacturer guarantees.

The synchronized hydraulic bending press DURMA AD-R from the “economy” series has become a successful development of the AD-E model. The unit is designed for a wide range of customers who would like to minimize the number of control functions. In the new series of presses, sheet processing is carried out according to a program that is formed directly by the operator, who subsequently monitors its processing. The main programmable operations are approach speed, return speed and power stroke. Thus, the quality of the finished product is significantly improved due to the elimination of deformations in the bending zone, if you set the mode of moving the slide up at low speed, followed by stopping and switching to a waiting state. When working with stainless steel and some other unusual materials, it is useful to program the shutter speed from below or the delay. For these purposes, the standard set of AD-R presses includes a CNC Easy controller.

All members of the DURMA AD-R hydraulic press brake family have three axes under CNC control: X - back stop positioning, Y1 and Y2 - slider movement. The process of programming the controller is simplified as much as possible and is carried out from the control panel, due to which the time for manufacturing the part is significantly reduced. Having received initial information about the dimensions of the product and the sequence of technological operations, CNC independently calculates the bending angle, the initial and final positions of the slider and back stop, as well as their movement along the axes.

At the request of the customer, the basic set of the AD-R press can be supplemented with a system for compensating the deflection of the work table (automatic under the control of a controller or manual), a color graphic monitor connected to CNC Easy and a circuit for determining the sequence of bending and sheet rotation operations.

Hydraulic presses of the DURMA-D series have automatic calibration, which makes it possible to manufacture precision products with a positioning accuracy of up to 0.05 mm. The hydraulics of the unit are equipped with components manufactured by Bosch, and its electrical part is built on elements from Omron, Telemecanique and Siemens.

Products bearing the DURMA trademark have gained popularity in Russia due to the manufacturer’s highest responsibility for fulfilling contractual obligations, a modern system of warranty and post-warranty service and the most optimal quality-price ratio in its market segment.

Main components as standard
Top beam guides	Increased stroke, clearance and feed depth
Double guides increase the accuracy of movement of the upper beam	Working space increased on AD-R series machines, which significantly simplified the work and reduced the production cycle time
Motorized X axis travel is controlled by CNC	Front support
The height of the back stop (R axis) is set manually. The positioning depth of the finger blocks is calculated by the CNC. Backgauge recoil is a standard feature to ensure positioning accuracy. Finger blocks move along linear guides on bearings	The front support is quickly installed on linear guides and ball joints, which allow you to easily move the workpiece in the horizontal plane
Tool holder
Euroclamp Multi-V	Quick Release Clamp
This tool mounting system allows for precise parallelism
Safety systems comply with CE standards
The machine can be equipped with additional safety systems in accordance with CE
	Durma CNC Easy Bend
	More efficient and thorough control than with standard machines Training time 5 minutes More productive than analogues More cost effective than similar machines Lower service costs than standard machines Simplified screen with fewer buttons Easy to manage Does not require additional reprogramming Full control over all bending stages Tool options are already stored in memory Possibility of process adjustments USB interface Easy to upgrade
	Durma CNC Advantage
	19 cm diagonal monitor with 2-dimensional scanning on the working screen Easier bending settings Automatic detection bend sequences Full calculation of sizes and parts Safety system Offline software (programming and setting up the operation of machine components) Motorized table deflection compensation I/O control Tandem work USB interface for backing up and restoring programs, instrument settings, parameters Free support 85 programs (up to 12 steps each) Software on disk or other media
	DNC 880s - CNC 2D
	DNC 8805 - controller designed specifically for bending equipment It is used both on fully synchronized machines and on serial machines with a simplified control system with an electric or hydraulic motor. DNC 880s - benchmark for performance at a competitive price in a compact design Color screen with a diagonal of 25 cm Real-time display of the bending process on a 2D screen Windows XP comes pre-installed for job and data management Communication with external devices via USB port for data backup. More than 20 available languages

Standard equipment

Optional add-ons

Digital CNC Easy Bend Controller - 3 Axis Control 3 asymmetric axes Y1, Y2, X - CNC control R-axis (vertical backgauge positioning) - manual control EURO type tool clamp Electromechanical backgauge, linear guide and bearings Support rods with T-profile and stop Finger blocks on the back stop with height adjustment Die holder

Advantage Controller - 7 Axis Control DNC 8805 controller - control of all available axes Motorized R axis controlled by CNC Back stop 1000mm Quick release clamp (set) Manual table deflection compensation Motorized table deflection compensation controlled by CNC Laser illumination FIESSLER AKAS (manual) DFS1 Photoelectric laser for bottom beam Additional finger block Additional support rod Oil cooling Second foot pedal Special painting Controller from the opposite side

Specifications
AD-R series press brakes from 1250 mm. up to 3050 mm.

AD-R Series		Unit measurements	1260			30100	30135	30175	30220	30320
Working force		Tons	60	60	100	100	135	175	220	320
Working length	(A)	mm	1250	2050	2550	3050	3050	3050	3050	3050
Distance between supports	(B)	mm	1050	1700	2200	2600	2600	2600	2600	2600
		mm/sec	75	200	180	180	160	120	120	100
Y axis operating speed		mm/sec	9	10	10	10	10	10	10	10
		mm/sec	50	120	120	120	120	100	100	100
Clearance	(D)	mm	370	530	530	530	530	530	530	630
Table width	(G)	mm	104	104	104	104	104	104	104	154
Table height	(F)	mm	828	900	900	900	900	900	900	900
Move	(C)	mm	160	265	265	265	265	265	265	365
Sheet feeding depth	(E)	mm	350	410	410	410	410	410	410	410
Support rods		PC.	2	2	2	2	2	2	2	2
		PC.	2	2	2	2	2	2	2	2
X-axis travel speed		mm/sec	250	250	250	250	250	250	250	250
X-axis travel		mm	430	430	650	650	650	650	650	650
Engine power		kW	4	7,5	11	11	15	18,5	22	37
Oil tank capacity		L	60	100	100	100	150	250	250	250
Length	(L)	mm	2100	3300	3800	4200	4200	4350	4250	4300
Width	(W)	mm	1250	1650	1670	1670	1680	1700	1770	1820
Height	(H)	mm	2400	2750	2750	2750	2750	2750	2750	3230
Weight		kg	3200	6100	8650	9250	10250	11250	12250	17250

Specifications
AD-R series press brakes from 3700 mm. up to 6050 mm.

AD-R Series		Unit measurements	37175	37220	40175	40220	40320	40400	60220	60320	60400
Working force		Tons	175	220	175	220	320	400	220	320	400
Working length	(A)	mm	3700	3700	4050	4050	4050	4050	6050	6050	6050
Distance between supports	(B)	mm	3100	3100	3600	3600	3600	3400	5100	5100	5100
Y-axis speed in accelerated mode		mm/sec	120	120	120	120	100	100	100	100	100
Y axis operating speed		mm/sec	10	10	10	10	10	8	10	10	8
Y-axis reverse speed		mm/sec	100	100	100	100	100	80	100	100	80
Clearance	(D)	mm	530	530	530	530	630	630	530	630	630
Table width	(G)	mm	104	104	104	104	154	154	154	154	154
Table height	(F)	mm	900	900	900	900	900	1040	1100	1100	1220
Move	(C)	mm	265	265	265	265	365	365	365	365	365
Sheet feeding depth	(E)	mm	410	410	410	410	410	510	410	410	510
Support rods		PC.	2	2	2	2	2	2	4	4	4
Number of fingers on the back stop		PC.	2	2	2	2	2	2	4	4	4
X-axis travel speed		mm/sec	250	250	250	250	250	250	250	250	250
X-axis travel		mm	650	650	650	650	650	750	750	750	750
Engine power		kW	18.5	22	18.5	22	37	37	22	37	37
Oil tank capacity		L	250	250	250	250	250	450	250	250	500
Length	(L)	mm	4950	4950	5250	5250	5300	5750	7500	7500	7500
Width	(W)	mm	1700	1770	1700	1770	1910	2110	1770	1910	2110
Height	(H)	mm	2900	2900	2750	2900	3230	3540	3250	3450	3710
Weight		kg	17250	14100	12850	14750	20750	26750	20590	28250	35750

The DURMA company pursues a consistent policy of reducing the cost of the main types of production equipment. The AD-R line of presses was developed by the company's designers as part of this program.

A vertical sheet bending press has no restrictions on the complexity of the processed products; it combines high functionality and unconditional profitability. By selling equipment on the Russian market, DURMA offers customers the best balance of cost, quality guarantees and comfortable trading conditions.

A press brake equipped with a hydraulic drive can today be found in the equipment of many manufacturing enterprises operating in various industries. This device, on which a metal workpiece is processed using the cold deformation method, makes it possible to produce products whose geometric parameters exactly correspond to the specified values.

History of development and advantages of application

Hydraulic sheet bending, which began to be used by manufacturing enterprises in the middle of the 20th century, replaced manual and mechanical devices designed for bending sheet metal. Along with the high efficiency and cost-effectiveness of use, the manual bending press also has a number of significant disadvantages, primarily associated with the impossibility of obtaining products with precise geometric parameters with its help, as well as with the application of significant physical effort when using it.

Mechanical press brakes are also not without their disadvantages, which are as follows:

• The operation of such a machine is accompanied by significant noise and strong vibration.
• Products made using such equipment are not of high quality.
• When operating such a machine, the risk of injury to the operator operating it is too great.
• The use of such a press brake is associated with increased consumption electricity.
• Re-adjusting mechanical ones is a rather complex procedure.

In addition to mechanical and manual ones, press brakes with pneumatic drive are also available on the modern market. Such equipment, the operation of which requires a centralized compressed air network, has one very serious drawback: even with an increase in the size of the machine, the force it develops, with which it acts on the workpiece being processed, does not allow processing of sheet metal products of significant thickness.

Having appeared on the market, the hydraulic sheet bender, characterized by the highest power among all equipment for this purpose, made a real breakthrough in the processing of sheet metal by bending. This press bender, in addition to high power, has many other advantages:

1. high level of security;
2. high reliability;
3. the ability to produce products of exceptionally high quality.

Having appeared on the market in the middle of the 20th century, hydraulic models of sheet bending machines acquired a number of significant improvements, which made it possible to provide these devices with additional functionality and make them more convenient and safe to use. Equipping a modern hydraulic press brake with innovative devices and additional mechanisms allows it to be used to successfully solve even the most complex problems associated with sheet metal bending. Among such devices and mechanisms are:

1. CNC system for a press brake (such a system, equipped with a graphical user interface, is able to independently determine the modes and sequence of technological operations);
2. mechanisms ensuring increased protection machine operator from injury;
3. electronic devices, which are responsible for adjusting the speed of movement of the traverse;
4. indicator that provides control over the angle of bending being performed.

This is just a small list of additional elements that may be present in the design of a hydraulic press brake. The presence of such equipment significantly expands the functionality of the machine and makes it possible to use it to solve special problems.

Design Features

A press bender equipped with a hydraulic drive is used to solve the following technological problems:

• formation of bent metal products, the geometric parameters of which exactly correspond to the specified parameters;
• performing one of the stages of the technological process of processing products made of sheet steel, the thickness of which exceeds 3.5 mm;
• performing high-quality and inexpensive bending of sheet steel products, the thickness of which does not exceed 3.5 mm;
• production by bending of large batches of the same type of sheet steel products.

According to the degree of its mobility, a hydraulic sheet bender can be mobile or stationary. Stationary metal bending presses equipped with a hydraulic drive are characterized by high power and productivity. They are used to process a large number of workpieces in a limited period of time. In addition, stationary hydraulic sheet benders, due to their technical capabilities, are successfully used for processing workpieces made of sheet metal, even of very significant thickness. Mobile or mobile presses, also powered by a hydraulic drive, can be easily moved to any site where they are planned to be used for their intended purpose.

The operating principle of a press brake is that its working body, which is a traverse, is informed of the required direction of movement and the level of force with which it acts on the workpiece being processed. The traverse is a rigid beam made of steel. It is on it that the working devices are fixed, with the help of which the product is formed with the given geometric parameters.

Two linear sensors are responsible for the accuracy of the movement of the traverse, on which the accuracy and quality of the processing performed directly depends, one of which monitors the right side of the working element, and the second monitors the left. In order to enable the bending edge to be formed with the required geometric parameters on hydraulic sheet bending machines, most models are equipped with a rear programmable stop. Hydraulic sheet benders are practically indispensable equipment in the production of products for the following purposes:

• housing parts for household and industrial equipment, electrical devices for various purposes;
• elements of vehicle bodies;
• bent metal products for any other purpose.

Using special bending tools for press brakes, such equipment can successfully process sheet metal workpieces with cylindrical and conical configurations.

Principle of operation

The principle by which a press brake equipped with a hydraulic drive operates is quite simple, but nevertheless ensures both high productivity of technological operations and their safety.

The process of bending sheet metal blanks when using a machine of this category is performed in the following sequence:

1. The press traverse is fixed in " dead center» sheet-bending equipment located in its upper part.
2. In order for the traverse to begin to move from top to bottom at the required speed, a foot pedal or button is used to control this mechanism. Up to a certain position, the traverse moves at a free fall speed, which is higher than the speed required for bending. Despite this definition, there is no free fall of the traverse as such; each of its movements is monitored and controlled by means of appropriate equipment.
3. When the traverse is as close as possible to the surface of the workpiece being processed, the working speed is imparted to the beam. All movements of the traverse, as well as the operating modes of such movements, are controlled by the hydraulic system of the press brake, and hardware control devices or special sensors are responsible for controlling such processes.
4. The traverse of the machine, after imparting operating speed to it, tends to the bottom “dead point”, after reaching which it is maintained in this position for some time. Holding the traverse at the bottom “dead center” is necessary in order to ensure a uniform load on the surface of the workpiece that is undergoing the bending process.
5. It is very important, after finishing bending the workpiece, to begin lifting the traverse at a certain speed, which has no less influence on the quality of the processing performed than the process of its implementation itself. The stage of the bending process, at which the traverse rises above the surface of the newly processed workpiece, is called decompression.
6. After decompression is completed, the traverse returns to the top “dead center” at a sufficiently high speed.
7. The equipment is turned off and the finished product is removed from the processing area.

The technological process of bending a sheet metal workpiece, carried out on a press brake equipped with additional working mechanisms, may differ slightly from the scheme described above, but in general its essence remains unchanged.

When processing workpieces on a hydraulic sheet bending machine, we are guided by several basic parameters of both the equipment used and the technological process. Such parameters, in particular, include:

• working length of the equipment used;
• the force that the working body of the press exerts on the workpiece being processed;
• the productivity with which processing is performed.

In addition to the main ones, there are also a number of additional parameters that also need to be taken into account both when choosing a press and when performing processing. These parameters include:

• distance between the side posts of the machine;
• the speed at which work operations are performed;
• the maximum distance the traverse can be raised, etc.

Brief description of the LGSG-28 model

In the equipment of many manufacturing enterprises whose activities involve the need to bend sheet metal workpieces, one can find the LGSG-28 model for bending, manufactured by the Lipetsk plant for the production of special roll forming equipment. The technical capabilities of such a press make it possible to successfully use it for bending sheet metal blanks, the thickness of which reaches 3 mm and the length up to 2.5 m.

The most appropriate use of a machine of this model is for those enterprises that are engaged in the production of the same type of metal products in medium and large series. Of the most significant advantages of the press brake of this model, the following should be highlighted:

1. low noise level emitted during operation of the device;
2. ease of management and maintenance;
3. optimal combination of functionality and cost;
4. economical energy consumption;
5. the ability to perform bending both manually and fully automated;
6. high versatility;
7. high reliability, availability of spare parts and components for maintenance and repair.

The hydraulic equipment equipped with the press of this model allows the development of force in the bending area, reaching a value of 20 tons. The maximum bending angle that such equipment can achieve is 105°, and it can be performed at a minimum width of 4 cm.

CNC machines

Recently, sheet bending machines have become very popular. hydraulic presses, which are equipped with a numerical program unit responsible for controlling the device. Such equipment, which can also be a sheet bending machine with swivel beam, and machines of any other type, allows you to perform technological operations with high accuracy and productivity.

CNC sheet bending machines produced in Portugal under the Adira brand have gained great popularity among domestic manufacturers due to their reliability and wide functionality. The CNC hydraulic press brake of this brand is presented on the domestic market with models of varying power and functionality, but they all have the following advantages:

• durable traverse, made in monoblock design;
• compact dimensions of hydraulic equipment installed on machines;
• the presence of two types of overload protection: hydraulic and electrical;
• the presence in the design of the machine of two servo valves, which are controlled automatically;
• ease of setup of all operating modes;
• high performance and Russification of the controllers installed on this CNC sheet bending machine;
• powerful design of the back stop, equipped with four controlled axes.

All models of hydraulic press brakes produced at YuUMZ LLC can be equipped with various computer numerical control (CNC) systems upon customer request. CNC press brake (CNC press brake) allows you to perform bending, which on a conventional sheet bending machine takes a very long period of time or is impossible to perform at all. There are currently a lot of CNC systems for press brakes from various manufacturers, ranging from the simplest ones that control only two axes X And Y up to systems that control the 9 axes of the press and allow the operator to make adjustments to the work directly during the bending process.

The photo shows control panels of various CNC systems, from the simplest to models with 2D and 3D visualization on the screen.

The most popular are CNC sheet benders that control 3 axes: the Y1-Y2 axes of the slider and the X-axis of the back stop. Bending metal on a CNC press brake is much more accurate and takes much less time, since the CNC system allows you to avoid errors such as underbending or bending the product, and automatically rearranges the back stops to the required height, depth and width parameters. The CNC system on the press brake monitors and controls the movement of the slider - along two axes, the movement of the back stops - along six axes (when the press brake is equipped with an appropriate back stop), as well as the operation of the bombing system (table deflection compensation system) - the axes of the press brake are shown in drawing.

All modern CNC systems for press brakes have in their functionality:

Database of materials and tools;

Ability to enter data for bending parameters of new material;

Automatic calculation of the coordinates of all axes for each operation and the optimal bending sequence, the ability to change this sequence manually;

Automatic calculation of the unfolded length of a part;

The ability to easily adjust the bending angle by entering the resulting angle after the first bend;

Sufficient memory to store used programs;

Ability to add a new tool;

Graphic display of the sequence of bends and the ability to graphically enter the dimensions of the resulting part are available in models with 2D and 3D visualization on the controller screen.

The presence of the listed functions on a CNC sheet bender allows for quick input and calculation of programs by the operator directly on the CNC with minimal time spent on their preparation. Their absence complicates the work, increases the time spent on preparing control programs and performing test bends.

A CNC press brake (CNC sheet bending machine) allows for very precise bending with optimal time and energy costs and - what is most important - the high quality of the resulting product!

Technical consultants will help you select the necessary CNC press brake produced by YuUMZ LLC.

Description of some CNC controller models:

Compact controller DELEM DA-56 provides convenient programming through two-dimensional graphical design of CNC DELEM (Holland). Using stored tools allows you to easily and quickly set up the machine and carry out test bending.

The CNC controller is equipped with touch buttons. The program automatically calculates the positions of all axes and the bending sequence and displays the tool and workpiece on the display.

While controlling the machine, the operator, using the DA-56 control program, has the ability to graphically simulate the process of bending the workpiece. The basic control functions of the machine are control of the Y1, Y2, X axes. The second backgauge axis can be R/Z or X2.

The CNC controller is designed with the latest technology and is flexible and easy to use.

The color TFT LCD display and modern interface give the user the ability to quickly navigate the program and conveniently set parameters.

Characteristics:

• 2D Graphics Programming
• Color screen 10.4” LCD TFT
• Defining the bending sequence
• Axial length calculation
• Part convexity control
• USB interface for peripheral devices
• Auxiliary frequency converter and AC regulator
• Processor 200 MHz
• Memory 32 MB
• Memory for product and tool 2 MB
• Economical housing design

Data sheet:

• 7 program levels
• Numbering of drawings: 20 alphanumeric characters
• Program repeatability: 9.999
• Number of program steps: max. 99 (sequentially)
• Repeatability of steps: max. 99
• Measurement: millimeters/inches
• Counting of processed parts
• Memory function in case of power failure
• Error reporting system
• Housing with built-in control panel
• Programmable axis speed reduction
• Source material programming
• Tool programming

Count:

• Tool safety distance
• Bending forces
• Bending allowance
• Convex adjustments
• Axial length
• Bottom bombing force
• Tool collisions
• Angle adjustments

Interface:

• Bidirectional DNC RS-232C

Axis control:

• Unipolar frequency converter control
• Two-speed axis control for AC motor
• Y1, Y2, X, Z axes control

Secondary functions:

• Error and malfunction detection program
• Selecting the control language
• Conversational messaging
• Online help
• Opto-isolated Input/Output

ESTUN E200- The controller is specially designed for press brakes and guillotines with the most modern electronic technology to control the backgauge and the movement of the punch.
Easy switching between various functions, user-friendly interface, convenient operation and a large amount of information on the screen is available for the user to easily program, parameter setting and automatic processing operations are more easy, convenient and fast.
Thanks to Estun's patented motion control technology and CAN BUS interface to connect to Estun's own EDC series AC servo drive system, performances are fully reproducible.
The ability to select the menu language between: English / Chinese, the ability to select the measurement system between: inch / mm, satisfy the different requirements of customers from different countries.
The controller has passed strict electromagnetic compatibility tests and has been CE certified and approved by TUV Rheinland Group in Germany.

Main technical characteristics:
Bright LCD display, 240 x 128
One-sided positioning elimination of ball screw backlash
Measuring system selection: inch/mm
Position compensation
Storing the punch position
Automatic search for landmarks and memorization of position
Sufficient storage space for 40 programs
Multi-stage programming of 25 frames (steps) per program
Possibility to choose between: English menu or Chinese
Control: backgauge along the X axis, and movement along the Y axis
Installation of automatic working and rapid movement
Bend counter
Easy force setting
Possibility of multi-stage programming during automatic program operation and continuous positioning
In case of power failure: remembers the program position and sensor parameters and punch position
Single and joint axis positioning
Eliminating screw gap
Automatic reference point search
Automatic system that prevents the back gauge from colliding with the workpiece
Automatic location correction
Retaining data in memory after power off