This paper presents algorithms on deciding the
lead-time of a mould order and developing an evaluation
method to examine the performance of the cycle time for
mould developments. By using statistical hypothesis, a oneto-
one mathematical algorithm governing the ratio of a project’s
completion on time is proposed. The performance
evaluation of a factory mould development cycle time is constructed
by using the algorithm. A formula based on some
statistical hypothesis and performance index to determine the
upper limit of lead-time, and a procedure to evaluate the
performance of a factory mould development cycle is presented.
It will let those who are not statistics-educated easily
determine the lead-time to accept a mould order, and understand
the performance of a factory dealing with the orders
from the customers. A suggestion for modifying some determiners
or design weights can quickly be obtained to promote
the performance and reduce the cycle time for mould development
in the future. An example for mould development
performance is given to demonstrate the use of the indexbased
algorithm, and is proven to give good results according
to the presented procedure.