Research And Implementation Of Bearing Width Measurement System Based On Soft PLC

Currently,China’s industrial development is in a critical period of changing from increasing quantity to increasing quality,and the competition in manufacturing industry is unprecedented.Many equipment manufacturers have increased investment in R&D and adopt new technology to improve product’s C/P ratio and maintain enterprises’ competitiveness.Bearings is one of the largest production of basic components,but most domestic bearing assembly lines are still being controlled by traditional PLC or IPC.The traditional PLC is designed in closed structure,which brings traditional PLC many disadvantages,such as poor compatibility.Also the control scheme based on IPC,which wastes hardware and software resources,is difficult to reduce the cost.This paper put forward the application of soft PLC technology in bearing width measurement.Not only can this kind of control scheme simulate the control process of traditional PLC,it can also take advantage of lots of common hardware modules as the IPC do.On the base of soft PLC technology,this paper analyzed the requirements of bearing width measurement and designed a measurement system based on soft PLC.First of all,the paper compared the traditional control scheme of bearing assembling with the control scheme based on soft PLC and put forward the significance of studying the application of bearing width measurement based on soft PLC.Then,considering about the national standard on the bearing width measurement,this paper designed the mechanical measuring system.Then,taking the characteristics of soft PLC into considerations,this paper developed the hardware and software framework.The PLC application program can be edited with five languages which are abided by IEC61131-3 standard;Python data interactive script was written;HMI for soft PLC operating system was edited with Qtouch configuration software.Finally,the measurement system was verified by experiments,and the performance of the measurement system was evaluated based on the test results.This paper discussed the composition of soft PLC in detail,used PLC technology to design the system of bearing width measurement system.The paper can be certain reference for the application of soft PLC in the field of bearing assembling and measurement.