To achieve dimensional precision of silicon steel sheets, systematic optimization is required across multiple aspects including material selection, processing technology, equipment precision, and quality control. The key measures are as follows:
Optimize Process Parameters: Precisely control cutting speed, feed rate, and pressure in stamping, shearing, and other processes to reduce vibration and material deformation during processing, thereby improving dimensional consistency.
Adopt High-Precision Processing Equipment: Use CNC punching machines, laser cutters, or fully automatic lamination shearing lines with high repeat positioning accuracy to ensure dimensional deviations are minimized. For example, Guilin Juntaifu Electric Co., Ltd. achieved precise stacking of silicon steel sheets with millimeter-level accuracy through AI vision and robotic collaborative operations.
Strictly Control Environmental Factors: Process in a constant-temperature workshop to avoid dimensional instability caused by thermal expansion and contraction of silicon steel sheets due to temperature fluctuations.
Enhance Detection and Feedback Mechanisms: Increase the frequency of online inspections, using coordinate measuring machines (CMM), AI vision systems, and other tools for real-time dimensional monitoring, and feed data back to the control system for dynamic correction.
Use Precision Fixtures and Positioning Devices: Design high-rigidity, low-deformation dedicated fixtures, and adopt positioning devices for silicon steel lamination (e.g., those from Shijiazhuang Hengchuang Electric) to ensure precise positioning of each sheet during lamination, improving overall core quality.
Material Pre-treatment and Quality Screening: Perform aging treatment on silicon steel sheets to eliminate internal stresses, and screen out materials with excessive thickness deviations before processing using screening modules to ensure raw material consistency.
Apply Error Compensation Technology: Compensate for systematic errors in equipment (e.g., lead screw backlash, guide rail wear) through software to further enhance processing precision.
Through these comprehensive measures, dimensional precision of silicon steel sheets can be significantly improved, meeting the stringent requirements of high-performance motors, transformers, and other equipment for core materials.