MCU-based automatic
control system for spot-welding
Abstract
Spot-welding in the automotive manufacturing and other areas of needing exact welding plays an important role. There is no automatic welding in many industrial areas of welding, using a large number of methods with manual welding. Because of the randomicity in the manual operation, the phenomenon of leak and leakage in the welding occur from time to time. And again, this needs to increase a large number of personnel who examine product qualities, to carry out spot checks and inspections of the quality. Adopting single-chip computer control to achieve welding automation is an effective way to change this status quo, to reduce the manpower and improve the welding quality.
In this study, according to the request for their production lines to improve the welding process in Shanghai Baolong Automotive Technology Co., Ltd., the components of displacement sensors, X / Y-axis stepper motor devices and so on, constitute a closed-loop control system with single-chip computer. And we use them to complete the software and hardware designs of the automated spot-welding control system ,in order to save costs & human resources for the company, to improve the quality and efficiency of welding, thus creating a considerable economic benefits.
This article focuses on the interface design and related procedures for the preparation. Mainly we have adopted single-chip technology, liquid crystal display(LCD)technology and pulse width modulation(PWM)technology to complete the digital control and automatic welding with the welding operation machine, to achieve precise position of the solder joint and to write interface procedures.