- Clean dies and sheet surface to prevent impurities from embedding;  

- Use lower dies with polyurethane protector sleeves (at V-groove opening);  

- For soft materials like stainless steel or aluminum, cover sheets with dedicated plastic film.

- Check sheet thickness tolerance (±0.1mm deviation can alter angles);  

- Calibrate ram parallelism and worktable leveling;  

- Activate deflection compensation in CNC systems (auto-adjusts mid-stroke pressure).

General rule: V-die width ≈ 6–8 × material thickness (t)  

- Example： 2mm steel sheet → V-die width 12–16mm  

- Special cases:  

- Thick plates (t ≥ 8mm): V-die width ≥ 8t;  

- Sharp bends: Use narrow V-dies (4–5t) but require higher tonnage.

- Overloading (e.g., using 100-ton dies for 120-ton work);  

- Foreign objects on sheet (welding slag, steel balls);  

- Long-term accumulation of debris in die holders causing misalignment.  

-Deviation of the center of the groove between the upper and die.

Clean guide rails and ball screws, check for obstructions and Check for loose screws.

- Recalibrate back gauge origin, inspect servo motor encoder signals;  

- Compensate for thermal drift (recalibrate if workshop temperature varies >5℃).  

Typically, we deliver goods within 30 days. If the machine is a non-standard customized product, it may take longer. However, the delivery time for such machines will not exceed 50 days.

- Key requirements:  

- Two-hand control buttons (prevent single-hand operation);  

- Install light curtains/laser guards (hands >200mm from dies);  

- Use supports during thick-plate bending to prevent workpiece drop.

- Contaminated hydraulic oil (replace filter; change oil if darkened);  

- Pump cavitation (check low oil level or air leaks in suction line);  

- Worn relief valve (clean or replace valve core).

Recommend automation if:  

- Monthly volume >500 pieces;  

- Workpiece weight >15kg (high manual handling load);  

- Extremely high consistency required (e.g., automotive parts).