Three-Roller Plate Bending Machine Part 2: Operation Procedure and Maintenance

# Three-Roller Plate Bending Machine Part 2: Operation Procedure and Maintenance ## 4. Standard Seven-Step Operation Procedure ### Step One: Start Equipment 1. Connect main power supply 2. Confirm control system is powered on normally 3. Perform no-load jog test ### Step Two: Select Roller Position - Thicker plates require larger initial opening - Smaller target diameter requires greater bending amount ### Step Three: Plate Placement - Place sheet smoothly into equipment - Sheet edge parallel to rollers - Prevent diagonal entry ### Step Four: Pre-Bending - Press sheet end to appropriate bending angle - Minimize straight edge section ### Step Five: Formal Rolling 1. Start roller rotation 2. Slowly press down or adjust side rollers 3. Gradually approach target radius ### Step Six: Correction and Rounding - Check if diameter meets requirements - Check interface gap uniformity ### Step Seven: Unloading 1. Confirm rollers have stopped 2. Release pressure 3. Never insert hands into roller gap ## 5. Core Operation Techniques ### Pre-Bending Control - Insufficient pre-bending leads to obvious straight edges - Excessive pre-bending causes local deformation ### Springback Control | Material | Springback Characteristics | |----------|---------------------------| | Carbon steel | Small springback | | Stainless steel | Large springback | | High-strength steel | Significant springback | ## 6. Maintenance System ### Daily Maintenance - Clean roller surfaces - Check oil circuits - Inspect fasteners ### Weekly Maintenance - Check fasteners - Inspect lubrication - Check hydraulic pipe connections ### Monthly Maintenance - Check hydraulic oil contamination - Inspect filter elements ## 7. Safety Operation Rules - Operators must receive training - Never insert hands into roller gap - Confirm equipment is fully stopped before unloading