Core structure type and press-fit the technical requirements

A circular core punching scheduled press-fit press-fit in a different way, the stator core structure can be divided into external pressure and internal pressure means mounted two kinds. Small motor stator core is usually outside the press-fit, medium-sized motor core can be press-fit within or outside the press-fit. The outer stator core press-fit to the inner circle positioning punching, punching in the tire inflation pressure mounted stacked, around the same time slot interposer 3-4 root groove-like stick. First expansion tire inflation pressure so open, so that the inner circle core inflation Qi. Then pressed core, the cleat into the dovetail slot hold tight, and then both ends of the cleat bent, hold the end face of the core, the iron core into a solid unit. Finally, relieve pressure hydraulic press, tire inflation apart, remove the core. Advantages crimping process is press-fit with the core processing base can operate independently; welt convenience; dipping and drying equipment utilization, and save insulating paint. The disadvantage is the need for tire inflation. Pressure mounted within the stator core is in a cradle made of laminated punching. The use of a fixed core axial ribs on the base and around the studs curved several key fixed, so that the core does not occur circumferential and axial movement. Press-fit

  5:00, the first pressure map and the platen teeth into the shoulder of the base in the fixed core ribs, according to the mark and the semicircular groove pin holes on the outer perimeter of the punching, punching will turn into the base within (with cylindrical punching positioning), while the rod-like insertion grooves 3-4 root worse in four weeks. If after radial ventilation grooves, punching stacked to a certain height, it should be placed in the ventilation slot board. Then turn into the punching teeth platen and the pressure ring. Finally, the stand into the hydraulic press table, the core pressed into the curved key, use the welding arc weld bond pressure ring, so that the core is secured in the inner housing. Advantage within the crimping process is not press-fit tire inflation, without punching outer dovetail groove, die structure is relatively simple; windings in the machine base, insulated and remote in time, the end is not easy to wear the drawback is the root core inner circle must coaxial port and stop base; embedding less convenient; when insulated, capacity utilization is low, insulating paint waste more.