上海第二天平仪器厂生产的JN-A型精密扭力天平,是用一对垂直交叉的金属簧片把横梁悬挂在天平基架上的。这一对薄金属簧片叫做“吊片”。吊片生锈、变形或损坏时,需要换装新吊片。徒手拆装吊片,费时费事,不易掌握。我们在实践中通过使用一个自制的胎具和一个吊片长度样板尺拆装吊片,可以收到事半功倍的效果。 Shanghai Second Balance Instrument Factory production of JN-A precision torque balance is the use of a pair of vertically crossed metal reeds suspended beams on the balance base frame. This pair of thin metal reeds is called “hanging sheet.” When the hook is rusty, deformed or damaged, you need to replace the new hook. Unmanned removable pieces, time-consuming and difficult to grasp. In practice, we can get a multiplier effect by using a self-made mold and a length of the length of the template ruler removable pieces.