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1.故障现象 某厂于1994年从捷克引进了一台W200HD型数控镗铣床,几年来运行良好,在生产过程中发挥着重要作用,但是它在一次使用的过程中,发现无论机床走多远的距离,其坐标显示的距离和实际检测的距离总有一定的误差,有时达到几毫米,甚至十几毫米。这种定位误差较大的现象,使数控机床无法正常加工,因而这台机床出现了故障。 2.故障分析 W200HD镗铣床所配数控系统是德国西门子公司的SINUMERIK 810 GA3系统,它是一种中档的闭环数控系统,能够实现三个坐标轴联动,分辨率是1ηm。对于这样高精度的数控系统,出现几毫米甚至十几毫米误差,是不正常的。该系统本身具有自诊断功能,能诊断出一定范围内的故障。但此时显示器上没有故障信
1. Symptom A plant in 1994 from the Czech Republic introduced a W200HD-type CNC boring and milling machine, the past few years to run well in the production process plays an important role, but it in a single use process and found no matter how far the machine go Of the distance, the coordinates of the distance and the actual detection of the total distance there is always some error, sometimes up to a few millimeters, or even ten millimeters. This positioning error larger phenomenon, so NC machine can not be normal processing, so this machine has a fault. 2. Fault Analysis W200HD boring and milling machine with CNC system is the German company Siemens SINUMERIK 810 GA3 system, which is a mid-range closed-loop CNC system that can achieve three axes linkage, the resolution is 1ηm. For such a high-precision CNC system, the emergence of a few millimeters or even ten millimeters error is not normal. The system itself has a self-diagnostic function that can diagnose a range of faults. But at this time there is no fault message on the display