Factors Affecting The Crimping Quality Of Cold-pressed Terminals
Cable Lugs The connection quality coefficient has many influences, and not controlling what kind of surface will affect the crimping quality. The main factor is that the selected hand tool must be a structure with different terminal structures, so as to select the appropriate crimping hand tool or crimping die. Secondly, first analyze the influence of different crimping dies for crimping.
In order to verify whether the setting revision of the crimping metal die affects the crimping quality of the cold-pressed terminal, the following two methods are currently used to crimp the same cable with different crimping metal dies to make the crimping height consistent. With the same product form of terminals, 10 samples are made respectively to measure their ultimate tensile strength. The experimental study proves that the working tension standard is met between the two. The tension system of the wire harness assembly subjected to pit crimping is slightly higher than that of the double-type crimping. According to the "IPC-A-620B Requirements and Acceptance of Cable and Harness Assemblies", after the terminal crimping is completed, the two ends need obvious bell-shaped crimping interfaces on the cloud synchronization, while the data of the terminal connection at both ends of the double r-type crimping needs to be released and lead-in.
In fact, the quality of cold-pressed terminal crimping is not only affected by the crimping die, but also has a great relationship with the cable itself. The same type of cable itself is not necessarily the same thickness. There will be differences between different manufacturers at home and abroad, and even different batches of products from the same manufacturer.
When the wire diameter is consistent, the thickness of the insulating sheath may also affect the existence of some differences, then we may cause the crimping quality and effect of the cold-pressed terminal to be different. In addition, the material and material thickness of the terminal are also such a very important economic factor. You can think of it yourself. A terminal without the ability to be rigid cannot have a pull-off force and cannot withstand greater pressure.
Based on the above description, it can be seen that in order to ensure that the crimped terminal is of cold quality, it not only involves the shape of the crimping die, but each set should be a reasonable process parameter, including the crimping height of the die, and the diameter of the cable terminal structure. Different diameters are used to adjust the crimping height of the crimping die, and different terminals require different dies.
