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2. 发明授权

US4091541A Linear measuring apparatus 失效
标题翻译：线性测量装置
公开(公告)号：US4091541A
公开(公告)日：1978-05-30
申请号：US512811
申请日：1974-10-07
申请人： James J. DiCiaccio
发明人： James J. DiCiaccio
IPC分类号： G01B7/02 , G01D5/04 , B23Q17/02 , G01B3/00
CPC分类号： G01D5/04 , G01B7/02
摘要： A linear measuring system for precisely measuring distances along a rather long measurement axis. The apparatus includes an endless measuring cable which is held under tension between a metering drum at one end of the system and an idler drum at the other end. The measuring cable is wrapped around a groove, which has a semicircular cross sectional shape, on the circumference of the measuring drum, and is wrapped similarly around the idler drum. The cable is coupled to an object, the movement of which is to be measured, and movement of the object results in linear movement of the cable and rotational movement of the metering drum. A rotary encoder, which produces a digital output signal, is coupled to the metering drum to measure linear movement of the object. The accuracy of the measurement depends upon maintaining a constant measuring diameter of the metering drum and the measuring cable, and also upon maintaining a tight frictional bond between the measuring cable and the metering drum. This is accomplished by utilizing a measuring cable which has a diameter slightly larger than the diameter of the semicircular groove in the metering drum, and further having a flexible cross sectional area such that when the cable is placed in the groove under tension it flows into the groove to maintain a constant measuring diameter and also to form a tight frictional bond between the cable and the groove.
摘要翻译：一种线性测量系统，用于精确测量沿相当长的测量轴的距离。该装置包括一个环形测量电缆，该电缆被固定在系统一端处的计量鼓和另一端的惰轮之间的张力下。测量电缆缠绕在测量滚筒圆周上的具有半圆形横截面形状的凹槽上，并且围绕惰轮缠绕。电缆连接到待测量的物体上，并且物体的移动导致电缆的线性运动和计量鼓的旋转运动。产生数字输出信号的旋转编码器耦合到计量鼓以测量物体的线性移动。测量的精度取决于保持计量鼓和测量电缆的恒定测量直径，并且还保持测量电缆和计量鼓之间的紧密摩擦接合。这是通过使用测量电缆来实现的，测量电缆的直径略大于计量鼓中的半圆形槽的直径，并且还具有柔性的横截面积，使得当电缆在张力下放置在凹槽中时，它流入凹槽以保持恒定的测量直径并且还在电缆和凹槽之间形成紧密的摩擦接合。

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