Patent ID: 10712236

Abstract:
Provided is a state diagnosis system, which is applied to a rolling guide device in which a moving member including an endless circulation path for rolling elements is freely movable along a track member, and which is configured to appropriately recognize a state of a rolling surface of the track member. The state diagnosis system includes: a sensor configured to detect a physical quantity exhibited when the moving member is moving along the track member; a signal processing unit configured to process an output signal from the sensor to output analysis data; and a determination processing unit configured to compare the analysis data with threshold value data to determine whether or not the rolling guide device has an abnormality. Further, when a cycle at which each of the rolling elements, which moves back and forth in the endless circulation path, enters a loadpath from a no-loadpath is represented by t, a data collection time period T, for which the signal processing unit takes in the output signal from the sensor, is set to satisfy T≥t.