Problems that cannot be ignored on the electromagnetic line
Some quality hazards that have not been noticed
The influence of the electrical and mechanical properties of the magnet wire itself on the motor is self-evident, and the attention of each motor manufacturer and customer is sufficient to explain everything. The discussion here is actually a problem that is common in the ordinary and not effectively avoided by the motor manufacturer. The quality hazards that have not been noticed often lead to quality accidents due to lack of awareness.
1, single-axis weight and equipment matching
Experienced winding masters have more or less the experience: when the electromagnetic bobbin is placed horizontally and moved relative to the supporting mandrel, if the bobbin is relatively light, the electromagnetic bobbin will periodically collide. If the electromagnetic line paint has sufficient toughness, this hidden danger may be obscured.
In many cases, the wound coil is defective and cannot be seen by the naked eye. It flows into the next process and causes an incredible problem. Because it is inevitable that there will be few cases where the ruler has a small amount of time, and there is no sufficient reason to justify it. The worse situation is: all the way to the process inspection, the electrical failure to the customer from time to time. There are several reasons for this hidden quality hazard:
● There is no serious consideration of the matching problem between the single-axis weight of the electromagnetic wire and the speed of the device;
● The winding process causes the spool hole to be uneven, which makes it difficult to detect the uneven tension of the magnet wire when winding.
● It is difficult to find or detect the unevenness of the magnet wire caused by the uneven tension and the peeling of the patent leather, unless the electromagnetic wire is broken when it is serious. For the case where the spool is too heavy, the problem is similar.
2. Electromagnetic wire and spool end face friction
When the bobbin is placed vertically, there is no matching problem between the bobbin weight and the device speed, but if the protection is improper, the quality hazard will be buried. It is often the case that there is friction between the electromagnetic wire and the end face of the bobbin, especially in the case where the end face is not smooth, the electromagnet paint is easily damaged, and the post-process inspection is also impossible to completely detect and eliminate.
3, the spool is damaged or does not meet the requirements
This problem is more problematic on wooden spools. Since the end face of the wooden bobbin and the middle shaft are separated, the joint positions are prone to different degrees of gap. When the electromagnetic wire is wound, especially when the motor coil is wound, some electromagnetic wires are stuck into the bobbin, which causes the winding process to be blocked. The stagnation or direct penetration of the bobbin is broken. This is a problem that electromagnetic wire manufacturers must face and solve.
4, the electromagnetic wire is scattered
Whether it is a round wire or a flat wire, if the arrangement is scattered, it will cause the bobbin to rotate unbalanced when the coil is wound, and the electromagnetic wire will be subjected to uneven tension, and the electromagnetic wire is damaged at the same time, the coil winding is uneven. It is not conducive to the later weaving, which also has a great impact on the performance of the motor.
5, the spool and device positioning does not match
The locating pin is usually used to fix the spool to ensure that the solenoid spool and the winding device remain relatively stationary, so that the spool can be balanced during the winding process. However, in fact, there are often cases where the electromagnetic bobbin is very worn, resulting in an increase in the diameter and positional uncertainty of the positioning hole, and the bobbin is swayed during the coil winding process.
6, the wire mold damage to the electromagnetic wire
For large-size motor coils, the coil half-length is relatively long, and the radius of gyration experienced by the electromagnetic wire during the winding process is particularly large, which increases the degree of uneven force in the winding process of the electromagnetic wire. For this reason, when setting the equipment speed, it should be considered that the speed is not too fast and is manually assisted.
7, the problem of layout when winding the flat wire
If the electromagnetic wire arrangement on the bobbin is better, it is easy to ensure the uniformity during winding. Otherwise, the bobbin ring wound is poorly formed, which will affect the gelation effect in serious cases, and even cause the coil size to be too poor to be inlaid.
The unsuitability of all winding processes will be reflected in different degrees in the process of weaving and even affect the performance of the motor. The key part of motor manufacturing is the manufacture of windings. Only by processing every detail can it be possible to eliminate the hidden dangers of motor quality. In the bud.
