Abstract
News editors obtained the following quote from the background information suppli ed by the inventors:“With the continuous development of science and technology, robot arms are not only used to replacemonotonous, repetitive and dangerous wo rk in manufacturing to improve the automation degree andreduce the labor cost, but also used to achieve a human-machine cooperation with operators to completespecial works with higher difficulty, complexity and accuracy. Therefore, the tr aditional industrial robot armgradually evolves into the collaborative robot ar m with better security and human-machine cooperation.The development of the col laborative robot arm will be described in detail below.
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