Apparatus and method for detecting damage to linear guide
AssigneeFanuc Corporation
InventorAkira Tanaka
Life of this patent
Estimating the term…
Abstract
An apparatus and a method for detecting damage to a linear guide on which a robot is mounted, by using a simple configuration. The apparatus has: a length measuring sensor configured to measure a position of a predetermined portion of the robot at predetermined time intervals; a current detecting section configured to detect a current value of a drive motor for driving a slide; and a judging section such as a processor, configured to, when the measured distance between the predetermined portion of the robot and the length measuring sensor is out of a range defined by a predetermined first threshold, and when the current value of the drive motor is equal to or higher than a predetermined second threshold, judge that the linear guide has been damaged.
Claims5
An apparatus for detecting damage to a linear guide having a slide on which a robot is mounted and a guide rail configured to guide the slide, the apparatus comprising:
- a length measuring sensor configured to measure a distance between a predetermined portion of the robot and a fixed position other than the robot;
- a current detecting section configured to detect a current value of a drive motor for driving the slide;
- and
- a judging section configured to, when the distance measured by the length measuring sensor is out of a range defined by a predetermined first threshold, and when the current value of the motor is equal to or higher than a predetermined second threshold, judge that the linear guide has been damaged.
A method for detecting damage to a linear guide having a slide on which a robot is mounted and a guide rail configured to guide the slide, the method comprising the steps of:
- storing predetermined first and second thresholds;
- measuring a distance between a predetermined portion of the robot and a fixed position other than the robot;
- detecting a current value of a drive motor for driving the slide;
- and
- judging, when the distance is out of a range defined by the first threshold, and when the current value of the motor is equal to or higher than the second threshold, that the linear guide has been damaged.
Dependencies are inferred from the claim text.