LIANG Xichang, WAN Yi, ZHU Zhenjie, KOU Zhaojun, ZHANG Dong

(1. Key Laboratory of High Efficiency and Clean Manufacturing, Shandong University, Jinan 250061, China;

2. Qilu Hospital, Shandong University, Jinan 250012, China)

 

Abstract: Aiming at the disadvantages of low flexibility and low degree of automation of existing control system, the data collection, control of vibration motor and transducer were studied in vibration stress relief system. The spectrum analysis method was derived in theory and used to determine the natural frequency of parts. A vibration stress relief control system was developed with the combination of VB and Matlab. The vibration stress relief system were also contained data acquisition card, transducer and vibration motor. Both hardware and control system were designed, in which the control system contained user interface, scanning module, spectrum analysis module and relief module. By using contrast the residual stress before and after vibration relief, the effectiveness of the system was evaluated. The results indicate that the average residual stress declined by 46.62% after vibration relief, which reached the vibration stress relief on eliminating residual stress standard and proved the effectiveness of the system. The system has short development cycle and high degree of automation.

Key words: vibration stress relief; residual stress; VB and Matlab mixed programming; spectrum analysis