Dimension tolerance determining method and dimension tolerance determination system thereof
View Patent ↗A dimension tolerance determining method and a system are disclosed. The method includes: determining initial tolerances of parts in assembled product; generating a plurality of tolerance data sets according to initial tolerances of parts, each tolerance data set containing a calculated part tolerance of each part; inputting the plurality of tolerance data sets into a key parameter generation module to generate a plurality of key parameters corresponding to the assembled product, wherein each key parameter corresponds to one tolerance data set; when the key parameters are located within a design range, calculating a plurality of assembly yield rates based on the tolerance data sets corresponding to the key parameters located within the design range; and selecting the tolerance data set corresponding to one of the assembly yield rates as the tolerances of the parts in the assembled product; wherein the key parameter generation module includes a neural network model.
1. A dimension tolerance determination system, suitable for determining tolerances of parts in an assembled product, the dimension tolerance determination system comprising:
an input module, suitable for a user to input initial tolerances of the parts in the assembled product;
a tolerance generation module, electrically connected to the input module, the tolerance generation module is configured for generating a plurality of tolerance data sets according to the initial tolerances of the parts, each tolerance data set containing a calculated part tolerance of each part;
a key parameter generation module, electrically connected to the tolerance generation module, the key parameter generation module is configured for generating a plurality of key parameters corresponding to the assembled product according to the plurality of tolerance data sets, wherein each key parameter corresponds to one of the tolerance data sets;
an assembly yield calculation module, electrically connected to the key parameter generation module, the assembly yield calculation module is configured for selecting a key parameter located within a design range, and for calculating a plurality of assembly yield rates based on the tolerance data sets corresponding to the key parameters located within the design range;
wherein the key parameter generation module comprises a neural network model.
2. The dimension tolerance determination system according to claim 1 , wherein the key parameter generation module selects at least one key parameter closest to a boundary of the design range, and calculates at least one assembly yield rate according to the tolerance data set corresponding to the selected key parameter.
3. The dimension tolerance determination system according to claim 2 , wherein the closest to the boundary of the design range is a boundary with a smaller index value.
4. The dimension tolerance determination system according to claim 1 , wherein the tolerance generation module uses a Monte Carlo method and a dimension distribution range of the parts for generating the plurality of tolerance data sets.