1. Definition and Core Functions
Hydraulic CNC Press Brake: A high-precision industrial machine that uses hydraulic power and a CNC (Computer Numerical Control) system to bend metal sheets into desired angles and shapes.
Primary Function**: Performs angular bending (V-shape, U-shape, Z-shape, etc.) on metal sheets (steel, aluminum, stainless steel), widely used in sheet metal processing, machinery manufacturing, automotive parts production, and more.
2. Structure and Working Principle
Hydraulic System: Driven by a hydraulic pump, cylinders generate high-pressure oil to move the ram vertically, applying bending force (ranging from tens to thousands of tons).
CNC System: Pre-sets parameters (bend angle, stroke, speed) and automates ram positioning and back gauge alignment for precision.
Tooling System: Includes upper (punch) and lower (die) tools, interchangeable for diverse bending requirements.
Compensation Mechanism: Uses deflection compensation (hydraulic or mechanical) to counteract table deformation during bending, ensuring straightness for long sheets.
3. Key Technical Features
High Precision:
Bend angle accuracy: ±0.1°; repeat positioning accuracy: ±0.01mm
Real-time monitoring via grating scales/encoders with closed-loop error correction.
Smart Operation**:
CNC supports graphical programming (e.g., CAD file import) and auto-calculates bending sequences.
Touchscreen interfaces and database storage for common bending profiles.
Energy Efficiency:
Servo hydraulic systems reduce energy consumption by **30-50%** compared to traditional systems.
Fast ram speed (≥200mm/s) for higher productivity.
Safety:
Laser safety curtains, two-hand controls, emergency stop systems.
4. Major Applications
Sheet Metal Fabrication: Chassis, cabinets, power distribution enclosures.
Automotive: Body frames, chassis components, exhaust pipes.
Aerospace: Complex bending of aluminum/titanium alloy parts.
Home Appliances: Batch production of refrigerator/AC housings.
Architectural Decoration: Custom stainless steel railings, metal cladding.
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