Environmental Impact on CNC Benders and Fixes

1. Temperature Effects

1. Hydraulic Oil Viscosity Changes: Thickening at low temperatures / thinning at high temperatures

Solution: Use temperature-controlled hydraulic oil tank to maintain oil temperature at 40 ± 5°C.

2. Servo Motor Overheat Alarm: Poor heat dissipation causes power derating

Solution: Install forced air cooling system; regularly clean motor cooling fins.

3. Thermal Deformation of Mechanical Components: Different metal coefficients of thermal expansion (e.g., guide rails and ball screws)

Solution: Maintain constant temperature workshop environment (recommended 20 ± 2°C); preheat equipment for 30 minutes.

4. Reduced Stability of Electrical Components: High temperature accelerates electronic component aging

Solution: Install air conditioning in control cabinets; avoid direct sunlight exposure on equipment.

2. Humidity Effects

1. Hydraulic Oil Emulsification and Degradation: Water ingress causes oil oxidation

Solution: Check oil water content daily; replace oil if water content exceeds 0.1%.

2. Corrosion of Guide Rails and Ball Screws: Prolonged exposure to relative humidity above 70%

Solution: Apply long-lasting anti-rust grease (e.g., Molykote HP-300).

3. Electrical Short-Circuit Risk: Condensation causes PCB corrosion

Solution: Place desiccant packs inside control cabinets; use humidity sensors linked to dehumidifiers.

4. Mold Surface Adhesion: High humidity increases friction between material and mold

Solution: Add PTFE coating on mold surfaces; control working area humidity at 45–65% RH.

3. Dust Effects

1. Linear Scale/Encoder Reading Errors: Dust obstructs optical signals

Solution: Install IP54 protective covers; clean reading heads weekly with water-free ethanol.

2. Pneumatic Valve Core Sticking: Particulates enter solenoid valves

Solution: Install 0.01 μm precision filters at air inlets; perform regular drainage.

3. Accelerated Guide Rail Wear: Abrasive particles mix with grease forming grinding paste

Solution: Use sealed chip scrapers; switch to automatic grease replenishment system.

4. Reduced Cooling Fan Efficiency: Dust blocks airflow passages (>3 mm dust buildup)

Solution: Perform monthly reverse blow with compressed air (pressure ≤ 0.3 MPa).

Recommended Key Protective System Configurations

1. Environmental Monitoring System

• Real-time monitoring: temperature & humidity sensors + dust particle counters (PM2.5 threshold alarms)
• Linked controls: automatic activation of air conditioning, dehumidifiers, and fresh air systems

2. Active Protection Measures