CNC gear measuring center is the main equipment for the gear error detection.To measure and evaluate gear single error

it’s significant to develop a software with properties of stable

high-performance

convenient to human-computer interaction.Because of the complex parameters and gear errors

it’s necessary to design software architecture before developing the software.The design of use case diagram

class diagram

state diagram for the software are carried out by using the UML（unified modeling language）.At last

the test case and the main interface of the software is given.After testing

the software is validated to be stable and reliable

easily to expand function and management.