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我在调整沈阳市水平仪厂生产的2.00×200毫米、0.02毫米/米的框式水平仪的零位时,始终达不到气泡对中间位置的偏移不大于1/4分度的要求,很伤脑筋。拆卸中发现该水平仪水泡一端由万向头为支点,另一端由一顶块与水泡外壳螺纹联结,外壳与框体之间垫一小块硬塑料起着少量的弹簧作用。底部由一顶丝(M4)调整其水泡轴线与基面的相对平行。而用两个顶丝顶在顶块的小平面上来控制水泡的径向窜动(如图1所示)。这样的结构极不
When I adjusted the zero of the 2.00 × 200 mm, 0.02 mm / m box-type spirit level meter produced by the Shenyang Level Instrument Factory, the displacement of the bubble to the middle position was not more than 1/4 graduation, which hurt very much Brains. Demolition found that the level of blisters at one end by the universal head for the fulcrum, the other end by a block with the blister shell thread connection between the shell and the frame pad a small piece of hard plastic plays a small amount of spring effect. Bottom by a top wire (M4) to adjust its blister axis and the base of the relative parallel. While using two top wire roof in the top of the small plane to control the blisters radial movement (Figure 1). This structure is extremely rare