What is the structure of the mechanical arm?

At present, the mechanical arm is the most widely used automatic mechanical device in the field of robotics, and it can be seen in industrial manufacturing, medical care, entertainment services, military affairs, space exploration and other fields. Although they have different forms, they all have one common feature, that is, they can accept instructions and accurately locate a point in three-dimensional (or two-dimensional) space for operation.

According to different structural forms, robot arms can be divided into multi-joint robot arms, Cartesian robot arms, spherical robot arms, polar robot arms, cylindrical robot arms and so on.