LUBRICATED STATE DETECTOR AND LUBRICATED STATE DETECTING METHOD

摘要

A lubricated state detector for simply detecting the lubricated state of every moving block with eyes. The electric resistance between a track member (2) and a moving block (1) is detected by applying a voltage between the track member (2) and the moving block (1). The detected electric resistance is compared with the threshold preset in a rheostat. A light-emitting element which emits light depending on the result of the comparison is provided to the moving block of a motion guidance device. Since the result of the comparison of the electric resistance is displayed while the moving block is moving, the lubricated state of the moving blockcan be simply judged with eyes.