Computer and object tolerance calculation method

A method being executed by a processor of a computing device, comprising steps:

• (a) determining formulas for calculating size differences between a first object and a second object by the computing device according to positions between the first object, the second object and a third object which is assembled with the first object and the second object;
• (b) calculating a theoretical maximum size difference and a theoretical minimum size difference between the first object and the second object by using the determined formulas, and calculating an absolute value of a difference between the first object and the second object according to the maximum size difference and the theoretical minimum size difference by the computing device;
• (c) controlling a random number table to select random samples from a theoretical size range of the first object, a theoretical size range of the second object and a theoretical fit tolerance range, wherein the selected random samples are taken as the actual sizes of the first object, the actual sizes of the second object and the actual fit tolerances;
• (d) calculating actual maximum size differences, actual minimum size differences and actual absolute values of size difference according to the actual sizes of the first object and the actual sizes of the second object;
• (e) obtaining an absolute value of size difference which is the most in the random table and obtaining all the actual maximum differences and all the minimum differences corresponding to the obtained absolute value of size difference from the random number table;
• and
• (f) obtaining a maximum value of all actual maximum differences and a minimum value of all actual minimum differences.

A non-transitory computer-readable medium having stored thereon instructions that, when executed by a processor of a computing device, cause the processor to perform operations of:

• (a) determining formulas for calculating size differences between a first object and a second object by the computing device according to positions between the first object, the second object and a third object which is assembled with the first object and the second object;
• (b) calculating a theoretical maximum size difference and a theoretical minimum size difference between the first object and the second object by using the determined formulas, and calculating an absolute value of a difference between the first object and the second object according to the maximum size difference and the theoretical minimum size difference by the computing device;
• (c) controlling a random number table to select random samples from a theoretical size range of the first object, a theoretical size range of the second object and a theoretical fit tolerance range, wherein the selected random samples are taken as the actual sizes of the first object, the actual sizes of the second object and the actual fit tolerances;
• (d) calculating actual maximum size differences, actual minimum size differences and actual absolute values of size difference according to the actual sizes of the first object and the actual sizes of the second object;
• (e) obtaining an absolute value of size difference which is the most in the random table and obtaining all the actual maximum differences and all the minimum differences corresponding to the obtained absolute value of size difference from the random number table;
• and
• (f) obtaining a maximum value of all actual maximum differences and a minimum value of all actual minimum differences.