After the sawing machine equipment is used regularly for a period of time, it is necessary to return to the factory to repair and grind, so as not to affect the normal use in the later period. The following Precision Grinding points should be noted when polishing the blade:

Performance Indicators Requiring Blade Maintenance

• • Surface quality assessment:
    • Visible striations (>0.05mm depth)
    • Cutting width variance exceeding ±0.2mm
  • Operational symptoms:
    • Abnormal acoustic signatures (≥85dB change)
    • Excessive smoke generation (smoke point visibility <3m)
    • Material loss exceeding 5% of standard yield
  • Cutting parameter deviations:
    • Power consumption increase >15%
    • Feed resistance variance >20%

Pre-Grinding Inspection Protocol

• • Dimensional verification:
    

    Parameter	Tolerance	Measurement Tool
    Tooth height	±0.1mm	Digital caliper
    Gullet depth	+0.05/-0mm	Profile projector
    Side clearance	0-1.2mm	Feeler gauge

  • Structural integrity checks:
    • Crack detection using dye penetrant
    • Runout verification (<0.15mm TIR)
    • Tension stress testing (150-200N/mm²)

Precision Grinding Specifications

• • Geometric requirements:
    • Primary clearance angle: 15°±1°
    • Secondary clearance: 30°±2°
    • Hook angle maintenance: 10°-15°
  • Material removal limits:
    • Maximum tooth height reduction: 0.3mm/pass
    • Minimum remaining base metal: 1.0mm
    • Gullet radius preservation: R2.5±0.2mm

Automated Precision Grinding Parameters

• • Machine setup:
    • Wheel grit: 80-120 (CBN recommended)
    • Coolant flow: 4-6L/min (synthetic emulsion)
    • Feed rate: 0.02-0.05mm/pass
  • Quality control:
    • Surface finish: Ra ≤0.8μm
    • Edge radius: ≤0.02mm
    • Hardness preservation: ±1HRC

Post-Grinding Validation

• • Performance testing:
    • Cutting force measurement (benchmark comparison)
    • Chip formation analysis (continuous curl verification)
    • Temperature monitoring (IR thermography <120°C)
  • Documentation requirements:
    • Grinding history log (date, operator, parameters)
    • Dimensional before/after records
    • Next service interval calculation

Maintenance Schedule Optimization

• • Usage-based intervals:
    

    Material Type	Recommended Interval
    Softwoods	800-1000 cuts
    Hardwoods	500-700 cuts
    Composites	300-500 cuts

  • Condition-based triggers:
    • 10% increase in power draw
    • 0.1mm tooth height loss
    • Visible flank wear >0.15mm

Technical Note: For carbide-tipped blades, implement EDM dressing every 3-5 grinding cycles to maintain optimal wheel profile. Always conduct trial cuts on scrap material before returning to production. Certified operators should perform grinding using ISO 15641-compliant procedures.