我们研制的多头电动螺刀用于DD28型单相电度表的磁路装配工序。在这之前,该工序一直采用单头电动螺刀工作。由于单头电动螺刀在工作时产生剧烈震动,操作工人的手臂和前胸经常被震得麻木,工人容易患肌肉劳损 We have developed a multi-head electric screwdriver DD28-type single-phase meter for the magnetic assembly process. Prior to this, the process has been using a single-head electric screwdriver work. As the single-head electric screwdriver produces vigorous vibration at work, the worker’s arm and chest are often numbed and workers are susceptible to muscle strain