Abstract
In automobile manufacturing, improving the quality and efficiency of resistance spot welding and avoiding the damage caused by excessive impact force are of significance. This paper proposes a low-impact contact evaluation method for the pneumatic servo welding gun and the concept of optimal cushioning distance. A segmented sliding-mode control method is used. By analyzing the electrode contact mechanism, the gradual progress of spot welding is controlled by the method proposed in this paper. The cushioning effects of PID control, sliding-mode variable structure control, and segmented sliding-mode variable structure control are compared by experiments. The results show that the contact force during the 0.05 s after the electrode contact is not more than 10% of the welding force using sliding-mode control, approximately 0.2 kN, which satisfies the proposed low-impact contact requirements.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
