Dimensio tolerantiae partium metallorum ad granditudinem et gradum tolerantiae selecta est. Selection of tolerance grades should not only meet the design requirements, but also consider the possibility and economy of the process. Ut est, cum praecepta esset utilis, probare maxime tolerantiam quam possit, id est, inferiorem gradum tolerantiae eligere.

GB/T13914-2002 Dimensional Tolerances for Stamping Parts specifies the dimensional tolerances for Metal Stamping parts. According to the rules for separating flat stamping parts and formed stamping parts, dimensional tolerances are established. The dimensional tolerance values of stamped parts are related to both the dimensions of the stamped parts and the plate thickness, as well as the accuracy level.

Dimensional tolerance of flat stamping parts: divided into 11 levels, indicated by ST1 to ST11, among which ST indicates the dimensional tolerance of flat stamping parts, and the tolerance level code is indicated by Arabic numerals. Leveles accuractis sequentibus a ST1 usque ad ST11 decrebent.

Dimensional tolerance of formed stamping parts: Formed stamping parts are divided into 10 precision levels, indicated by FT1 to FT10, where FT indicates the dimensional tolerance of formed stamping parts and Arabic numerals indicate the tolerance level. The accuracy levels decrease sequentially from FT1 to FT10. Limit errorem partis metallorum: errorem inferioris angularis est 0, et errorem superior summa inferioris error is et tolerantiae dimensionalis est. Errorem superior regulae dimensionis axis est errore fundamental, cum valore 0, et inferior errore est errore superior minus tolerantia granditudinis. Altissimum et inferiorem errorem in distancia foraminis centri, distancia foraminis, longitudo et altitudo gravitationis et altitudinis dimidiae tolerantiae dimensionalis sunt.

Tolerantia est variatio dimensional is, et maior est valor eius, inferior precision et minus difficile processionis. Minus est valor, magis precis et magis difficiles processionis. Quid sunt maxime importantia ad productionem attention?

1. Bending viewpoint: The viewpoint size of a stamped part formed by bending;

2. Punching viewpoint: the viewpoint size formed by punching processing at the plane of a flat plate or formed part;

3. Radius anguli puncti: dimension linearum radius anguli partium metallorum puncti, succindi, et alia procedura separata.

4. Dimensiones formantur: dimensiones linearum parterum pulsavorum processae per bending, stretching, and other processes;

5. Dimensiones punctionis: dimensiones linearis partibus punctis processi per punctionem, cutationem et alias proceduras separatis.

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