Guia especializado para instalação de prensa dobradeira CNC

Expert Guide for CNC Press Brake Installation

Expert Guide for CNC Press Brake Installation

Lifting and installation

The CNC press brake is composed of a frame, ram, work table, oil cylinder, die, hydraulic proportional servo system, position detection system, numerical control system and electrical system.

The structure adopts an assembly frame, which is assembled by left and right columns, oil tank, middle beam, bottom beam and main body of the work table.

Each component is equipped with lifting holes for installation and lifting, and appropriate lifting tools and equipment must be used, considering the weight of each component.

The installation accuracy of the CNC press brake directly affects its geometric accuracy and service performance. Therefore, installation must be carried out by professionals, or the manufacturer must send personnel to the site for guidance.

Before installing the CNC press brake, the foundation must be prepared 15 days in advance. The foundation design specifies the minimum shape and depth dimensions, which the user can increase according to local resistance. The user should prepare the crossbar, base plate and power input wire as needed and embed them. The company provides the rest.

The surface near the 8 trapezoidal square holes reserved for anchor bolts must be leveled with a level gauge to facilitate preliminary adjustment during installation and adjustment of the CNC press brake. After installation, the machine must be leveled with an adjusting wedge to avoid twisting the structure. The anchor bolts must be tightened, followed by the second pouring of the cement paste.

After the poured secondary cement paste has dried, the CNC press brake must be adjusted accurately. The bench surface where the level gauge is placed must be free from oil, dust and dirt. After leveling, the longitudinal and transverse levels must be within 0.2/1000m.

Once the CNC press brake is installed and adjusted, the user can prepare the well cover plate according to the shape of the CNC press brake.

Electrical wiring

The CNC press brake is powered by a 380V, 50Hz three-phase power supply. The control circuit is supplied with 220 V 50 Hz AC power by the control transformer, and the solenoid valve is powered by a 24 V DC power supply.

To avoid excessive voltage spikes caused by current spikes, the input power line must be reliably connected to the machine power line with a conductor with sufficient cross-sectional area.

To ensure the safety of personnel and equipment, it is necessary to establish a reliable connection between the machine tool grounding and the workshop grounding network using a conductor with the same cross-section as the power line.

Before turning on the CNC press brake, check whether the voltage and frequency of the power supply meet the requirements of the machine. The allowable variation range for the power supply voltage is ±5% and the frequency variation range is ±1%.

After connecting the power supply, start the machine and observe the direction of rotation of the oil pump motor. If the direction of rotation is opposite to the marked direction, replace any two-phase lines on the three-phase power supply.

General requirements for programmable logic controllers (PLCs)

Control power supply AC220V single phase 50Hz
Power fluctuation AC 198∽242V
Room temperature 0℃∽55℃
Ambient humidity 10% ∽ 90% non-condensing
Vibration 10 ∽ 55 Hz 0.7 mm (maximum 2G)
Attack 10g XYZ triad
Anti-interference 1000vp-p 1YS30 ∽ 100Hz (analog interference)
Withstand voltage AC1500v for 1 minute (between ground terminal and any other terminal)
Insulation resistance 5MΩ 500V DC (idem)
Installation environment No harmful gases, no metal fragments

The PLC's backup battery is a lithium battery, which can last about 5 years.

Note: For Delem DA-60 series CNC system, programmable controller (PLC) is integrated into the CNC system.

Inspection before use

Before using the machine, first fill the oil tank with hydraulic oil and observe the oil level. Hydraulic oil must occupy more than 4/5 of the oil mark space.

Fill all lubrication points with corresponding grease and lubricating oil.

Determine the thickness of the bent plate and the opening of the bottom die (generally, the die opening is 8 to 10 times the thickness of the bent plate).

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