Metal Shear Linear Cutting Accuracy Factors
The linear cutting accuracy of metal shears is influenced by multiple technical factors, ranging from equipment design to material properties and operational conditions.
- Equipment Type: Standard shears achieve ±0.1mm/m accuracy, while CNC models like Wuxi Shenchong's reach ±0.03mm/m through advanced blade alignment systems.
- Mechanical Design: Blade mounting (fixed/movable vs double movable) affects straightness. Rear stopper rigidity must exceed 500N/mm² to prevent positioning errors.
- Material Properties: Cutting >6mm thick or HRC 40+ materials requires 10-15% more force, increasing deflection risks by 0.02-0.05mm per cut.
- Operational Factors: Vibration above 5μm amplitude or positioning errors exceeding 0.1° angular deviation can compound accuracy issues exponentially.
Precision Comparison: A standard shear cutting 3mm mild steel may show ±0.15mm deviation, while a CNC model with laser-guided back gauge maintains ±0.04mm tolerance under identical conditions.
Optimization Strategies: Implement CNC servo controls for blade positioning, use hydrostatic guideways (stiffness >800N/μm), and maintain material hardness below HRC 35 for optimal linear accuracy within ±0.05mm/m specifications.