HDLW12-8×1000 4 Roll CNC Sheet Bending Machine

Key Advantages of HDLW12-20×2000 4 Roll CNC Sheet Bending Machine

- Four-roll configuration: The HDLW12-20×2000 4 Roll CNC Sheet Bending Machine leaves no flat ends remaining on the plate after pre-bending, reducing material waste.
- CNC control: This 4 Roll CNC Sheet Bending Machine features a programmable control system capable of storing multiple bending parameter sets for repeated use.
- Full hydraulic drive: Each roll movement on the HDLW12-20×2000 is independently controlled by the hydraulic system, with short response time for action switching.
- One-touch bending: After entering the target diameter, the system automatically calculates roll feed amounts and bending passes.
- Rounding function: Allows multiple rounding passes after bending to improve cylinder roundness.

Product Specifications of HDLW12-20×2000 4 Roll CNC Sheet Bending Machine

The HDLW12-20×2000 4 Roll CNC Sheet Bending Machine features induction-hardened roll surfaces with a surface hardness of HRC45–50. The control method employs a CNC system with an operator terminal and human-machine interface. A USB or Ethernet port is provided for parameter import/export on this 4 Roll CNC Sheet Bending Machine. Safety protection includes a photoelectric protection device and an emergency stop button.

Application Scenarios of HDLW12-20×2000 4 Roll CNC Sheet Bending Machine

The HDLW12-20×2000 4 Roll CNC Sheet Bending Machine is widely used in the following applications: ventilation ducts and air pipe rolling, thin-wall pressure vessel shell processing, automotive muffler and exhaust pipe components, food machinery and pharmaceutical equipment cylinders, lighting poles and advertising tower conical tube rolling, and curved components in sheet metal fabrication.

Common Issues and Solutions for HDLW12-20×2000 4 Roll CNC Sheet Bending Machine

Issue 1: Faceted or flat sections on the rolled cylinder
Possible causes: Excessive or insufficient side roll feed per pass; improper bending pass settings.
Solution: Reduce side roll feed per pass and increase the number of bending passes on the HDLW12-20×2000 4 Roll CNC Sheet Bending Machine; check feed parameters in the CNC program and reset according to material characteristics.

Issue 2: Inconsistent pre-bending curvature at plate ends compared to the cylinder body
Possible causes: Improper side roll penetration depth setting; uncalibrated relative position between lower roll and side rolls.
Solution: Reset side roll pre-bending stroke based on plate thickness; calibrate the zero position of lower and side rolls according to the machine manual.

Issue 3: Alarm or stop during CNC program operation
Possible causes: Abnormal sensor signals; servo motor overload; program parameters exceeding mechanical travel limits.
Solution: Check status of limit switches and proximity sensors on the HDLW12-20×2000; refer to the alarm code in the manual for corresponding action; verify that program parameters are within machine allowable ranges.

Operational Precautions for HDLW12-20×2000 4 Roll CNC Sheet Bending Machine

- On the HDLW12-20×2000 4 Roll CNC Sheet Bending Machine, plate ends must be pre-bent before cylinder rolling.
- Supply voltage fluctuation should not exceed ±10% of rated voltage; a voltage stabilizer is recommended.
- The CNC control system of this 4 Roll CNC Sheet Bending Machine should not be exposed to dusty or humid environments for extended periods; the control cabinet requires regular cleaning.
- Adjust bending speed and feed parameters when processing plates of different materials.
- Operators must receive specialized training on CNC bending machines, including program editing and manual override procedures.