Ergonomics and RSI Prevention in Fold-forming
折叠作业的人机工学与重复劳损防护
标签：人机工学, RSI, 职业健康, 折叠
折叠成型反复"折—展—修正"易诱发腕指劳损：折边改用台钳加软铝护口夹持，可省去大部分握持力；开缝用自制黄铜开缝器沿缝推进，避免用手指反复掰展；锤击修正保持前臂与锤柄同轴，不让手腕代偿发力。建议每 45 min 休息并做腕伸屈、前臂旋前旋后拉伸；出现指尖麻木或夜间痛感应立即减量就医。批量作业实行折叠与退火工序轮换，单人连续折弯不宜超过 2 h，教学班则要求师生演示交替进行。
The fold-open-correct cycle strains wrists and fingers: grip folds in a vice with soft aluminium jaws instead of by hand, open seams with a self-made brass seamer pushed along the crease rather than prying with fingers, and keep forearm and handle coaxial when hammer-correcting so the wrist never compensates. Break every 45 min for wrist flexion-extension and forearm pronation-supination stretches; numb fingertips or night pain mean cutting back and seeing a doctor. Rotate folding and annealing tasks in batch work—no more than 2 h of continuous folding per person—and alternate demonstrator roles in class.