Manufacturing method and manufacturing apparatus

A manufacturing apparatus comprising:

• a representative value deriving unit configured to derive, from statistic data, a representative value of a clearance that is provided between a first workpiece and a second workpiece, the first workpiece and the second workpiece eventually structuring an airframe of an aircraft and being configured to be fastened to each other, the statistic data being obtained from measuring the clearance;
• a first tester configured to test insertion of a tolerance shim into the clearance when the representative value derived by the representative value deriving unit is less than a tolerance of the clearance, and test insertion of a double-tolerance jig into the clearance when the tolerance shim is insertable into the clearance in the testing of the insertion of the tolerance shim, the tolerance shim having a thickness corresponding to the tolerance, the double-tolerance jig having a thickness twice the tolerance;
• and
• a second tester configured to test insertion of a difference shim into the clearance when the representative value is greater than the tolerance, test insertion of a representative shim into the clearance when the difference shim is insertable into the clearance in the testing of the insertion of the difference shim, and test insertion of an addition jig into the clearance when the representative shim is insertable into the clearance in the testing of the insertion of the representative shim, the difference shim having a thickness corresponding to a resultant of subtraction of the tolerance from the representative value, the representative shim having a thickness corresponding to the representative value, the addition jig having a thickness corresponding to a resultant of addition of the tolerance to the representative value.

A manufacturing apparatus comprising

• circuitry configured to
• derive, from statistic data, a representative value of a clearance that is provided between a first workpiece and a second workpiece, the first workpiece and the second workpiece eventually structuring an airframe of an aircraft and being configured to be fastened to each other, the statistic data being obtained from measuring the clearance,
• test insertion of a tolerance shim into the clearance when the representative value is less than a tolerance of the clearance, the tolerance shim having a thickness corresponding to the tolerance,
• test insertion of a double-tolerance jig into the clearance when the tolerance shim is insertable into the clearance in the testing of the insertion of the tolerance shim, the double-tolerance jig having a thickness twice the tolerance,
• test insertion of a difference shim into the clearance when the representative value is greater than the tolerance, the difference shim having a thickness corresponding to a resultant of subtraction of the tolerance from the representative value,
• test insertion of a representative shim into the clearance when the difference shim is insertable into the clearance in the testing of the insertion of the difference shim, the representative shim having a thickness corresponding to the representative value, and
• test insertion of an addition jig into the clearance when the representative shim is insertable into the clearance in the testing of the insertion of the representative shim, the addition jig having a thickness corresponding to a resultant of addition of the tolerance to the representative value.