R&D Of The Automatic Winding Machine For The Motor Stator

Motors have been widely applied to all areas of society, which are regarded as the power sources of the various types of equipment. The stator is the core component of th e motor stator, and rotation of rotor is driven by electromagnetic field, which is formed by the motor stator, so winding quality for stator coil directly affects the performance of the motor. Stator frame is made by thin silicon steel sheets, many slotted holes are pun ched out on the center of the silicon steel sheets, so stator frame possesses the closed st ructure, the electromagnetic wire coil is winded on the poles of the silicon steel sheet, t herefore, the winding of stator coil is more complicated than the winding of inductance coil by flat winding method and rotor coil which is using flying fork winding method.At present, most of the stator coil is still using manual winding at domestic, because of the low wingding efficiency and poor quality of coil winding, this winding way has alr eady dissatisfied the requirements for high performance motor. According to the motor stato r frame structure, the automatic winding theory for motor stator and the motion control alg orithm have been researched, the automatic winding machine for the motor stator has be en researched and developed, and has achieved the automatic winding.In First chapter, the article selected the background and significance of the topics, in troduced the way of wingding and the development of the winding machine, summarized the status of key technologies of the automatic winding machine, and concluded with th e main contents of this article.In Second chapter, according to the motor stator frame structure, a mathematical model h as been established which could be used to describe the enameled wire waist shape trajectory co mbining vertical movement of the guide needle and the rotation of the frame, when combining with the arrange-line principle,spindle technology and related auxiliary technology, the arti cle has determined the each function module of automatic winding machine for motor st ator, drew a design of each function module, ultimately determined the overall design sc heme of automatic winding machine for motor stator.In Third chapter, according to the structure requirements, the initial scheme of Z enclosure was designed; the modal analysis of Z enclosure was designed by using ANSYS Workbench, to obtain better 1 order natural frequency of Z enclosure, it was necessary to optimize the best tank wall flute length of Z enclosure’s side wall and the best location of reinforcements; with the supports of both sides plate, the transient dynamics analysis and evaluation to Z enclosure were designed. Eventually, the design of Z enclosure had been acquired, which got higher 1 order natural frequency and better dynamic performance.In Fourth chapter, in consideration of shafting parts and bearing’s supporting stiffness, the finite element model of spindle unit was established in ANSYS Workbench, and the spindle unit was based on modal analysis of the critical speed calculation; by doing the harmonic response analysis to the base, we could analyze force of the base and verify the dynamic performance of the base, results indicated the dynamic performance of the base had met the requirements.In Fifth chapter, according to the mathematical model of the motor stator winding, the m otion control algorithm has been presented for arc, ellipse, and minor ends of the waist shape tr ajectory. The virtual prototype of the motor stator winding machine was established by using th e ADAMS software. The efficiency of winding and variation of acceleration under different cho rd of the both ends were identified through motion simulation. With measuring acceleration of the wire rod on developed prototype, the test results and theoretical results and simula tion results are basically consistent,which indicated that the mathematical model and motion c ontrol algorithm could have solved the problems of automatic winding motion control of the mo tor stator.In Sixth chapter, summarized the full text, and raised further research directions.