Generally, the crimping depth of the confining pressure is d/3. At this time, although the compression deformation is relatively uniform, the outer layer is first deformed when the copper wire core of the cable is compressed, while the inner layer is basically unstressed, and the phenomenon of external tightness and internal looseness often occurs. , has a certain influence on its electrical conductivity.
In view of the shortcomings of the point pressure method and the confining pressure method, it is recommended to use the combination of the confining pressure and the point pressure crimping method after the optimized design to control the crimping depth to 0.4d, so as to effectively compress the terminals and cables. If the crimping length is too long, it is easy to cause the crimping force to be too large, and at the same time waste materials, so that the structural utilization rate of the crimping area is low。