摘要 |
This invention resolves the problem in which a robot of the existing method cannot efficiently carry coarse aluminum castings to a first and a second machining unit. A robot holds an untreated coarse aluminum casting that is located at a predetermined carrying-in corner with the holding means and carries it to the first machining unit. Then, at the first machining unit it holds the treated coarse aluminum casting that has been treated by the first machining unit with the holding means as well as transferring the untreated coarse aluminum casting from the holding means to the first machining unit. Then it carries the treated coarse aluminum casting that has been treated by the first machining unit to the second machining unit. Then, at the second machining unit it holds a treated coarse aluminum casting that has been treated by the second machining unit with the holding means as well as transferring the treated coarse aluminum casting that has been treated by the first machining unit from the holding means to the second machining unit. Then it carries the treated coarse aluminum casting that has been treated by the second machining unit to a predetermined carrying-out corner.
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