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千分尺的读数

千分尺的读数. 千分尺结构及使用. 测微螺杆. 棘轮. 微分筒. 测砧. 固定套管. 测量范围 0~25mm. Ｕ型架. 准确度 0.01mm. 被测物体长度. d=d i － d 0 d i ---- 表示测量物体时读数 d 0 ---- 表示测微螺杆与测砧直接接 触时读数 , 称为 零点读数. 零点读数. 图 1 读数为 d 0 =+0.005mm. 图 1. 图２读数为 d 0 = － 0.015mm. 图 2. 测量物体时读数 d i. 图 4. 图 3. 图 5. 图 3 读数： d i = 0.500 mm

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千分尺的读数

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  1. 千分尺的读数

  2. 千分尺结构及使用 测微螺杆 棘轮 微分筒 测砧 固定套管 测量范围 0~25mm Ｕ型架 准确度 0.01mm

  3. 被测物体长度 d=di－d0 • di ----表示测量物体时读数 • d0 ----表示测微螺杆与测砧直接接 触时读数,称为零点读数

  4. 零点读数 • 图1读数为 d0=+0.005mm 图1 • 图２读数为 • d0=－0.015mm 图2

  5. 测量物体时读数di 图4 图3 图5 图3 读数： di=0.500mm 图4读数： di=0.515mm 图5读数： di=0.485mm

  6. 图6读数正确的是？ • 5.485mm • 5.485cm • 4.985mm (D) 4.985cm 图6

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