The Design And Implementation Of Distributed Management System For Diesel NC Equipment Based On DNC

With the rise of a new round of worldwide revolution in science technology and industry,deep integration of information and industrialization has become an important development trend of manufacturing industry.It is imperative to implement the manufacturing management system in ship equipment industry,and the implementation of DNC system will be the necessary step and cornerstone for the marine diesel engine manufacturing workshop to be intelligent.In order to the build marine power manufacturing brand of high-precision and high-quality,a large number of NC equipment has been purchased by CMP(CSSC Marine Power CO.,LTD)in recent years.The original management mode of the workshop could not meet the production demand of diversified products,and intricate production problems could not be timely understood or dealt with,which affected the utilization efficiency of NC equipment and had become the bottleneck of optimizing production management.Based on current workshop requirement,this thesis puts forward the general plan of structuring a distributed Diesel NC equipment management system consisting of CNC editing system,NC program management system,DNC system and Data analysis system,by thoroughly researching and analyzing the application status of NC network in CMP’S production site as well as the applicability of network and communication technology combining with the development of NC and computer technology.The basic framework of the system,the function model and system environment will be designed in detail.This thesis designs DNC network system based on RS232 protocol and TCP/IP protocol,systemic research DB-9& DB-25 electric connector,interface signal under the RS232 protocol,key equipment under the TCP/IP protocol,two-way transmission principle,steps and implementation of TCP/IP packets between Ethernet and serial port devices,break point continual transfer and key code under the TCP/IP protocol.At the same time,the system will integrate different signal data including network port,MPI and electrical signal.The main data table and key data table structure of data analysis system,the algorithm design of KPI such as cutting rate in data analysis system also will be analyzed in this thesis.The system has been applied in the CMP manufacturing workshop.This system meets the demand of manufacture and management.All in all,it will be the foundation of “Made in China 2025”,and will be a classical model for the similar manufacturing enterprise.