| 摘要 |
PROBLEM TO BE SOLVED: To provide the control device of a welding robot capable of definitely judging a replacement timing of the protective glass of a distance measurement sensor for measuring a distance to a welded object in response to the degree of dirtiness of the glass. SOLUTION: When the number of welding or welding time by the welding robot reaches a certain value (step S210), the distance measuring sensor is disposed at a certain distance from a measurement surface (step S220). Then, a light interception amount is measured by irradiating a laser beam to a measured surface at a certain output (step S230). When a difference between the total measured light interception amount and a reference total interception amount is a predetermined amount or more (step S250), a signal urging a protecting glass to be replaced is outputted (step S280). COPYRIGHT: (C)2007,JPO&INPIT
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