To ensure operational safety and cutting precision at Kunshan Youyuansheng Machinery Co., Ltd., the following Pre-Operation Preparation must be strictly implemented before machine startup:

1. Structural Integrity Verification of Pre-Operation Preparation

• Mechanical Component Audit
  • Inspect load-bearing frames for fatigue cracks using magnetic particle testing (MPI) .
  • Confirm hydraulic column verticality with a precision level (tolerance <0.05°) .
  • Tighten all fasteners to specified torque values (e.g., M12 bolts at 85-95 N·m) .
• Electrical System Validation
  • Measure insulation resistance (>5MΩ) using a megohmmeter .
  • Test emergency stop circuit response time (<0.5s) with a multimeter .

2. Precision Lubrication Management

• Critical Lubrication Targets
  

  Component	Lubricant Type	Frequency
  Blade guide rails	ISO VG32 hydraulic oil	Every 200 operating hours
  Transmission chains	Lithium-based grease	Weekly
  Hydraulic system	HM-46 anti-wear oil	Annual replacement

• Special Notes
  • Clean oil nozzles with compressed air before lubrication to prevent particle ingress .
  • For HSS blades, apply anti-rust oil (e.g., WD-40) during storage periods exceeding 72 hours .

3. Blade Optimization & Calibration of Pre-Operation Preparation

• Blade Preconditioning
  • Verify blade tension using a tension meter (recommended: 18-22 kN for 25mm blades) .
  • Check tooth sharpness with a 10x magnifier; replace if edge radius exceeds 0.05mm .
• System Calibration
  • Recalibrate PLC positioning accuracy through test cuts (error <±0.1mm) .
  • Adjust pneumatic clamping pressure (0.5-0.6MPa) based on paper density (150-300gsm) .

4. Safety Function Verification

• Protective Device Activation
  • Test dual-button interlock system (simultaneous press required) .
  • Validate photoelectric guards with calibration blocks (response time <50ms) .
• Environmental Controls
  • Maintain workspace illumination >500 lux for visual monitoring .
  • Install paper dust extraction systems (airflow ≥30m³/min) .

5. Trial Run & Parameter Validation of Pre-Operation Preparation

• Dry Run Protocol
  • Execute no-load operation for 5 minutes, monitoring bearing temperature (<65°C) .
  • Perform test cuts on scrap paper to validate dimensional accuracy (tolerance ±0.3mm) .
• Parameter Documentation
  

  Parameter	Standard Range	Measurement Tool
  Vibration level	<4.5mm/s RMS	Vibration analyzer
  Hydraulic pressure	15-20MPa	Digital pressure gauge

6. Post-Preparation Protocol

• Operator Safety Gear
  • Mandatory PPE: EN 388-certified cut-resistant gloves, ANSI Z87.1 safety goggles .
  • Prohibit loose clothing/jewelry within 1.5m radius of moving parts .
• Emergency Readiness
  • Verify fire suppression system activation (CO₂ discharge within 3s) .
  • Position first-aid kits within 10m radius of workstations .