Even though modern industrial robots are becoming nimbler and more capable, they still need to get a good grip on thingsâ€”the equivalent of hands that are as agile and dexterous as the human variety.
How to tackle the thorny challenge, known in robotics speak as dexterous manipulation, was the aim of a recent workshop hosted by Commerce's National Institute of Standards and Technology (NIST). The workshop featured speakers from manufacturing companies (end users), along with developers of robot arms and of advanced robot "hands." Proceedings of the workshop, which NIST is using as it crafts a technology roadmap to guide measurement science research in the field, are summarized in a new report.
Factors driving the quest for human-like robot arms and grippers are quality control, cost, throughput and worker safety. According to one manufacturer at the workshop, two-thirds of his company's worker compensation cases are ergonomic disorders, mostly due to repetitive strain, over-extension and over-exertion.
Robotic arms are now starting to come in pairs, mounted to either a fixed or rotary torso with each arm having seven joints instead of the conventional six. This option boosts the dexterity of a robot and allows it to move its elbow around obstacles while maintaining precise placement at its working point. Read more