Status diagnosing system for rolling guide device and status diagnosing method

A state diagnosis system for a rolling guide device,

• the rolling guide device including:
• a plurality of rolling elements;
• a track member having a rolling surface for the rolling elements, the rolling surface extending along a longitudinal direction of the track member;
• and
• a moving member, which is assembled to the track member through intermediation of the rolling elements, and which includes an endless circulation path for the rolling elements, the endless circulation path including a load path for the rolling elements and no-load paths for coupling both ends of the load path,
• the state diagnosis system comprising:
• a sensor configured to detect a physical quantity exhibited when the moving member is moving along the track member;
• and
• a diagnosis processing unit configured to take in an output signal from the sensor for a predetermined time period, to thereby generate analysis data, compare the analysis data with threshold value data, determine whether the rolling guide device has an abnormality in accordance with a comparison result, and output a determination result,
• wherein the diagnosis processing unit has:
• a first processing mode of taking in the output signal from the sensor for a data collection time period T1, to thereby generate first analysis data, and comparing the first analysis data with first threshold value data;
• and
• a second processing mode of taking in the output signal from the sensor for a data collection time period T2 longer than the data collection time period T1, to thereby generate second analysis data, and comparing the second analysis data with second threshold value data,
• wherein the diagnosis processing unit is configured to determine which of the track member and the moving member causes the presence or absence of the abnormality of the rolling guide device in accordance with a combination of a comparison result in the first processing mode and a comparison result in the second processing mode and output the determination result.