The assembly tolerance analysis and optimization method based on digital product design model is put forward according to the analysis of digital-ization preassembly method.
This method make use of given error to control the section length and to removal superfluous type value points.The method can reduce working code length to a minimum without overgauge.
It demands that Apple's operations leaders commit to extremely precise manufacturing tolerances to produce millions of iPhones and other products with squircles.