Recent development of improved clinching process
- PDF / 9,806,721 Bytes
- 31 Pages / 595.276 x 790.866 pts Page_size
- 101 Downloads / 147 Views
ORIGINAL ARTICLE
Recent development of improved clinching process Hao Peng 1 & Chao Chen 1,2 & Huiyang Zhang 2 & Xiangkun Ran 2 Received: 11 May 2020 / Accepted: 17 August 2020 # Springer-Verlag London Ltd., part of Springer Nature 2020
Abstract Clinching technology has been widely applied in automobile assembly industries to join sheet materials of different thicknesses and properties. It does not require any auxiliary parts and only depends on the plastic deformation of materials themselves to form a joint. Furthermore, clinching tools that include the punch and the die are simpler than other thermal joining methods. However, the usability of the clinched joint is restricted by a low joining strength. In order to expand the application range of clinching technologies, researchers have conducted extensive researches on how to improve clinching technologies. In this article, the latest advances of clinching technologies are reviewed on the development of clinching tools and processes. The improved clinching processes including flat clinching, hole clinching, reshaping the clinched joint without a rivet, reshaped joint with a rivet, rivet clinching, rectangular clinching, dieless clinching, roller clinching, laser shock clinching, hydro-clinching, injection clinching, adhesive clinching, resistance spot clinching, friction-assisted clinching, and laser-assisted clinching are introduced. The advantages and disadvantages of different clinching technologies are proposed. In addition, some suggestions for the future development of clinching technology are given in this paper. The clinching technology is developing towards a hybrid joining technology with high strength, high stability, and high efficiency. Keywords Improved clinching . Hybrid clinching . Modified clinching . Lightweight sheet material
1 Introduction With the development of the concept of automotive lightweight, various lightweight sheets are adopted in industries in order to reduce the weight of the car body. The various lightweight sheets, such as aluminum alloys, magnesium alloys, titanium alloys, and polymers, are increasingly used in the manufacturing industry. The suitable joining technologies for joining these similar and dissimilar materials also have been developed [1–6]. Many methods for joining sheets, such as spot welding, self-piercing riveting, and adhesive bonds, are available. Those joining methods have their own characteristics in joining sheets. Spot welding uses a high pulse current to melt the
* Chao Chen [email protected] 1
State Key Laboratory of High Performance Complex Manufacturing, Light Alloy Research Institute, Central South University, Changsha 410083, China
2
School of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China
materials at the contact points between the two sheets to join them together [1–4]. However, the thermos-physical properties of aluminum alloys pose challenges to spot welding processes (including electrode degradation [7], welding defects [8], and softening of ba
Data Loading...
