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Accuracy vs repeatability; why the difference matters.

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When robots are programmed point to point, it does not matter where the robot thinks it is. The encoders give rotational positions for each axis that are very accurate and allow the robot to return to the position precisely. This ability is called repeatability and usually quoted by robot manufacturers. It is also usually very good- under 0.1mm. However accuracy is different. If you specify the robot to move from a point, to a position not previously specified, (say 500mm in one direction) the precision with which it does this is the accuracy. This is not often quoted by robot...

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CAD CAM integrated robotics, what it means for your production.

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CAD CAM integrated robotics, what it means for your production.

CAD, Computer Aided Design, has been around for as long as robotics, nearly 50 years in development and 30 years in common use. CAD allows analysis, flexibility and fast changes. CAM is Computer Aided Manufacturing, this utilises software to aid manufacturing. Commonly used together: CAD CAM. Industrial robots have a traditionally been programmed manually, that is from point to point by a specialist programmer, movements and functions recorded and played back. Although reliable this is an inflexible method, changes can be made but this can be a complex task. There are a few reasons why this methodology is used, it...

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