Method, system and computer product for performing geometric dimension and tolerance stack-up analysis

A system for performing geometric dimension and tolerance stack-up analysis for an assembly, the system comprising:

• a network;
• and
• a host system in communication with said network, said host system including software to implement a method comprising:
• receiving a target assembly dimension for stack-up analysis over said network, wherein said assembly includes at least one part;
• receiving a feature corresponding to said part over said network;
• receiving feature tolerance data associated with said feature over said network, wherein said feature tolerance data includes at least one of size tolerance and geometric tolerance;
• accessing stack-up rules in response to said receiving feature tolerance data, wherein said stack-up rules include:
• instructions to determine if a form tolerance, an orientation tolerance and a profile tolerance should be included in a stack-up tolerance for said feature;
• and
• formulas to calculate a nominal dimension and said stack-up tolerance for said feature when said feature tolerance data applies to features of sizes;
• deriving said nominal dimension and said stack-up tolerance for said feature responsive to said stack-up rules and to said feature tolerance data;
• and
• performing said stack-up analysis in response to said nominal dimension and to said stack-up tolerance, wherein said performing results in a mean and a standard deviation for said target assembly dimension.

A computer program product for performing geometric dimension and tolerance stack-up analysis for an assembly, the computer product comprising:

• a storage medium readable by a processing circuit and storing instructions for execution by the processing circuit for performing a method comprising:
• receiving a target assembly dimension for stack-up analysis, wherein said assembly includes at least one part;
• receiving a feature corresponding to said part;
• receiving feature tolerance data associated with said feature, wherein said feature tolerance data includes at least one of size tolerance and geometric tolerance;
• accessing stack-up rules in response to said receiving feature tolerance data, wherein said stack-up rules include:
• instructions to determine if a form tolerance, an orientation tolerance and a profile tolerance should be included in a stack-up tolerance for said feature;
• and
• formulas to calculate a nominal dimension and said stack-up tolerance for said feature when said feature tolerance data applies to features of sizes;
• deriving said nominal dimension and said stack-up tolerance for said feature responsive to said stack-up rules and to said feature tolerance data;
• and
• performing said stack-up analysis in response to said nominal dimension and to said stack-up tolerance, wherein said performing results in a mean and a standard deviation for said target assembly dimension.