Patent ID: 7555953
Filing Date: 2009-07-07
Classification: F16C,F16H,G01M

Abstract:
1. A condition detection apparatus for detecting a present operation condition in a linear rolling motion guide apparatus comprising: detection means for detecting a wave motion elastically generated on the basis of at least either one of contact or collision of a movable member or a track member to a rolling member contained in the linear rolling motion guide apparatus, contact or collision of a rolling surface to the rolling member contained in the linear rolling motion guide apparatus, or mutual contact or collision of the rolling members themselves, at a time when a plurality of rolling members contained in the linear rolling motion guide apparatus revolve in a circulation section therein, and generating an electric detection signal in accordance with the detected wave motion; and judgment means for judging a content of the present operation condition in response to the generated detection signal, wherein said judgment means comprises periodicity judgment means for judging presence or absence of a periodicity in the generated detection signal.