DP GROUP, founded in 2016, offer professional laser solutions and sheet metal fabrication machinery. Headquartered in Hong Kong, we operate three factories in mainland China:
DPMach (Dongguan): Specializes in laser cutting, welding, and marking.
DGDY (Dongguan): Focuses on press brake machines with advanced Panel Bender technology.
DPQG (Foshan): Manufactures large tube laser cutting machines for pipes up to 800mm in diameter and 30 meters lenth.

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Electro-Hydraulic Proportional System for 30T–50T Press Brake

The electro-hydraulic proportional system is an advanced hydraulic control system designed specifically for 30T–50T press brakes.
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Quantity:
  • PV32

Electro-Hydraulic Proportional System for 30T–50T Press Brake

Introduction:

The electro-hydraulic proportional system is an advanced hydraulic control system designed specifically for 30T–50T press brakes. It integrates cutting-edge technology to ensure high precision, responsiveness, and reliability, making it ideal for modern sheet metal bending applications.

JZFZ33


Product Features:

  • Fast Positioning: Adopts high-response proportional servo valve with a response frequency of 80–100Hz.

  • Precision: Positioning accuracy reaches 0.01mm.

  • Compact Design: Integrated high-pressure filter.

  • Functionality: Built-in hydraulic deflection compensation function.

  • Feedback: Equipped with an LVDT displacement sensor for enhanced accuracy control.


Specifications and Configuration Table:

Configuration 30T–50T 63T 110T 125T–170T 200T–250T 300T–320T
Normally Open Valve PV32 PV50 PV50 PV50 PV50 PV50
Normally Closed Valve SVF–32–21C SVF–40–21C SVF–40–21C SVF–40–21C SVF–50–21C SVF–50–21C
Oil Pump 10cc 16cc 20cc 25cc 32cc 40cc
Servo Valve NG6 NG6 NG6 NG6 NG6 NG6

Understanding Components of The Press Brake

Press Brake Terminology

Frame

The structural foundation of the press brake, supporting all other components. It provides stability and rigidity during operation, ensuring consistent bending results. For example, a robust frame ensures that the machine can withstand the high forces involved in bending thick metal without distortion.

Frames come in two primary configurations: C-shaped and square. C-shaped frames are commonly used in smaller or less powerful machines, offering a compact design and sufficient support for lighter bending tasks. Square frames, on the other hand, are typically found in larger, more powerful press brakes designed for heavy-duty operations. They provide greater rigidity and are better suited for handling larger sheets of metal and higher bending forces.

Bed

It is a fixed, flat surface used for the bending machine to lie the workpiece. It supports and ensures the bending process is correct and aligned. Bed plate: the stabilizing and supporting foundation of any brake press.

Ram

Ram is on the upper part of the press brake, which can be moved downward to exert bending force on the workpiece. It is connected to the punch and directly touches and helps form the metal.

Die

Punch and die

The die is a tooling and part with a specific shape used in the press brake and designed for shaping and forming the material. It is usually installed on the bottom beam.

Punch

The punch is also the tool and part with specific shapes used in the bending process for making materials to form. It is usually installed on the upper beam.

Back Gauge

The back gauge is the mechanism and CNC controller installed on the rear of the press brake bending area. It is composed of the fingers and stops and is designed to position the bending material precisely, which can ensure a consistent and accurate bending operation.

Back Gauge Origin

The back gauge origin is the reference point measured on the back gauge system. It ensures the starting location of the back gauge during the bending operation. A preset position for the back gauge, forms the center of the set V opening.

Control Panel

The interface used to operate the press brake, adjust settings, and monitor performance. On CNC press brakes, the control panel enables highly precise programming for complex bending sequences. CNC control panels allow operators to program bending angles, material thickness, and even manage multiple operations in a single cycle, which can greatly improve efficiency.

CNC System

CNC is the abbreviation of the computer numerical control. It refers to a control system utilizing computer programs to control the machine movement automatically, which includes back gauge, ram, and other axes.

Upper Beam

The upper beam is a movable beam or punch of the press brake, which can exert pressure on the material to perform bending. It fixes the punch and exerts the pressure via vertical movement.

Lower Beam

The lower beam plays a vital role in press brake fixing, which can offer support for die or bottom tools. When the upper beam or punch moves vertically to exert bending operations, it will keep stable.

X-axis

X axis

The X-axis refers to a horizontal axis that can control the back gauge moving along the press brake length. The operator controls the back-and-forth movement of the back gauge, thus ensuring the flange length.

Y-axis

The y-axis is a vertical axis that can control the movement of the press brake punch or upper beam. The ram's vertical movement is called the Y axis. If the press brake is equipped with two independent cylinders, the CNC press brake can directly control each side of the cylinder. The left side of the ram is Y1, and the right side of the ram is Y2.

Z axis

The z-axis refers to the horizontal axis that moves or stops along the left and right locations. The Z-axis is used to measure the location and movement of the back gauge.

R axis

The R axis is used to control the back gauge finger's vertical movement or stop. It can bend complex shapes or achieve multiple bends. The back gauge vertical movement is the R axis, which can be controlled on some CNC press brakes. R1 and R2 refer to the up and down movement of the left and right back gauges.

Sheet Support Arms

These sheet support arms are extended parts installed on the front of the machine, which are used to support the workpiece during bending. Sometimes, they can measure the workpiece.

Housing Brace

A structural component of the upper beam which holds the two driving cylinders of a press brake together.

Foot Pedal

The part of a mechanical press brake that is used by the operator to engage the clutch.

Crank Shaft

The component of a mechanical press brake which transfers the energy of the flywheel to the ram.

Features and Benefits:

  1. High Responsiveness:

    • Equipped with high-response proportional servo valves with a response frequency of 80–100Hz.

    • Ensures rapid and accurate positioning during bending operations.

  2. Precision Control:

    • Positioning accuracy up to 0.01mm, enabling precise bending angles and consistent results.

    • Includes an LVDT displacement sensor for real-time feedback and enhanced control.

  3. Compact Design:

    • Integrated high-pressure filter minimizes system footprint and ensures long-term operational reliability.

  4. Hydraulic Deflection Compensation:

    • Automatically adjusts to compensate for deflection during bending, ensuring uniform results across the entire workpiece.

  5. Energy Efficiency:

    • Reduces energy consumption by optimizing hydraulic flow and pressure, contributing to lower operational costs.


Functions:

  1. Positioning and Bending:

    • Allows precise positioning of the bending ram, ensuring exact bend angles and shapes.

  2. Automatic Deflection Compensation:

    • Compensates for material and machine frame deformation, providing consistent results even for thicker or longer sheets.

  3. Load Control:

    • Monitors and adjusts hydraulic pressure based on load requirements, ensuring smooth and safe operation.

  4. Real-Time Feedback:

    • Continuous monitoring of ram position and movement through integrated sensors for optimal precision and control.

  5. Safety and Reliability:

    • Integrated hydraulic safety features prevent overloading and ensure system stability during high-pressure operations.


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DP GROUP, founded in 2016, offer professional laser solutions and sheet metal fabrication machinery. Headquartered in Hong Kong, we operate three factories in mainland China:
DPMach (Dongguan): Specializes in laser cutting, welding, and marking.
DGDY (Dongguan): Focuses on press brake machines with advanced Panel Bender technology.
DPQG (Foshan): Manufactures large tube laser cutting machines for pipes up to 800mm in diameter and 30 meters lenth.
We offer comprehensive OEM/ODM services and spare parts for diverse industries. Our R&D team of over 50 experts ensures cutting-edge innovations, while our international support team of 21 professionals provides global service.

 

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