In the performance of connectors, terminal accuracy directly determines the stability of signal transmission. The implementation of terminal accuracy relies on three core elements: dimensional accuracy, shape accuracy, and positional accuracy.
1、 Dimensional accuracy: the key to precise matching
Dimensional accuracy is an important indicator for measuring the degree of closeness between the actual and ideal dimensions of a terminal. It is usually quantified through dimensional tolerances. The magnitude of tolerance values directly reflects the level of dimensional accuracy. When the tolerance value is large, it means that the dimensional accuracy of the terminal is low. Conversely, the smaller the tolerance value, the higher the dimensional accuracy and the better it can meet the requirements of precise matching.
2、 Shape accuracy: the foundation for ensuring shape consistency
Shape accuracy focuses on the degree of conformity between the actual shape of the terminal and the ideal shape. To ensure shape consistency, we need to consider six types of shape tolerances: straightness, flatness, roundness, cylindricity, line profile, and surface profile. The existence of these tolerances enables the terminals to maintain a high degree of morphological stability during the manufacturing process, thereby ensuring the performance of the connector.
3、 Position accuracy: guarantee of accurate positioning
Position accuracy involves the degree of proximity between the actual position and the ideal position between the terminal surface, axis, or symmetry plane. In order to achieve precise positioning, we need to consider eight positional tolerances: parallelism, perpendicularity, inclination, coaxiality, symmetry, positional accuracy, circular runout, and full runout. The existence of these tolerances ensures precise positioning of the terminals in the connector, thereby improving the stability and reliability of signal transmission.
