Vision based automatic assembly of rotor leads for micromotors

LEI Lihui, ZHU Xiaoming, XI Wenming
（School of Physics and Mechanical & Electrical Engineering, Xiamen University, Xiamen 361005, China）

Abstract: In the manufacture of micromotor, it is an important working procedure to weld the head of coil onto the bonding pad. Due to the particularity of the objects, all the welding working, in present, are completed by human labor under microscope, leading to high cost, low efficiency and poor consistence. Aiming at these problems, a technique about vision based automatic welding was presented, that is, adjusting the position and posture of motor using vision automatically. In addition, the head of coil was positioned by the use of airflow and the error made by the interference between adjustment of position and posture was analyzed and the solution was given finally. The results indicate that the head of coil can be positioned well by airflow and the precision of adjustment of position and posture using vision control reach 10 μm and 1° respectively.
Key words: micromotor; vision; automation; airflow position; adjustment of position and posture