It's simple to make a motor, but it's not easy to make a good motor, and it doesn't say that the black box is as unpredictable as the winding. The motor rotor manufacturing process hides many little-known secrets. Today, Dalan Motor's small series of problems in the processing of rotors for hydraulic oil pumps is easy to overlook or easy to ignore. Most of them are simple but always difficult to solve.
The rotor manufacturing of the motor includes the processing of parts such as shafts and rotor punching pieces, mainly involving two professional types of machining, punching and shearing, and the weight ratio of components affecting the quality level, and the proportion of equipment is more.
Rotor stacking process:
The rotor includes a cast aluminum rotor and a wound rotor.
For cast aluminum rotors, the control of the false shaft and the false key is very important. If the diameter of the false shaft is too small, it will cause the circumferential displacement of the punch when the laminate is pressed. The final result is the sawtooth of the cast aluminum rotor; on the contrary, if the diameter of the false shaft If it is too large, it will cause the deformation of the punching piece to cause the rotor piece to float or the bottom of the rotor. For the false key of the cast aluminum rotor, if the size does not match, the sawtooth or rotor groove slope will not meet the requirements.
For the wound rotor, the diameter of the corresponding core position is similar to that of the cast aluminum rotor, which will result in not only the inside of the groove, leaving a hidden quality hazard, but also the groove full rate. Different degrees of impact.
Rotor cast aluminum process:
Cast aluminum rotor strips or broken strips are a common problem in cast aluminum rotors. The cast aluminum process is considered a special control process in all motor manufacturers, whether it is low pressure cast aluminum, high pressure cast aluminum or centrifugal cast aluminum, due to casting. The aluminum process and cast aluminum results are not specific to the whole process, and process parameter selection control is very important.
Wound rotor machining:
Compared to a cast aluminum rotor, the wound rotor has windings, which in turn have reliability problems with rotor lashing and curing. In individual operating conditions, the rotor overspeed is inevitable, and the soft winding rotor often has a bagging problem, and the hard winding improves the effect better.
Rotor turning:
Speaking of rotor turning or car rotor, you have to talk about center hole control. The central hole is used as a positioning reference, which should be said to be too important. Both the shaft machining and the subsequent turning of the rotor are inseparable from the center hole.
Turning feed amount:
For rotor turning, there is a contradiction between process and work efficiency. In addition, if the feed amount is too large, the rotor surface will be rough, and the wound rotor will be grounded due to the circumferential displacement of the punch.
----- Editor-in-Chief: Dalan Oil Pump Motor 02-Procurement Consultant
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