Automatic design for trimming die insert of automotive panel

Li, Junjie; Kong, Chuipin; Zhou, Xiong

doi:10.1007/s00170-020-04938-2

Cited by 7 publications

(3 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[36,37] Furthermore, Co-N-500 and rGO-500 exhibit similar O1s XPS spectrum (Figure 2c) with O-C and O=C bond at 533.6 eV and 531.4 eV, respectively. [38][39][40] However, in the O1s XPS spectrum of Co-N/O-500, there is an additional peak at 532.3 eV which should be assigned to the Co-O-C bond. [40,41] This evidence proves that the atomic Co in Co-N/O-500 coordinates with both N and O.…”

Section: Resultsmentioning

confidence: 99%

Asymmetric N, O‐Coordinated Single Atomic Co Sites for Stable Lithium Metal Anodes

Fang

et al. 2023

Energy & Environ Materials

View full text Add to dashboard Cite

Lithium metal has been considered one of the most promising anodes for next‐generation rechargeable batteries, but its practical application is largely hindered by the uncontrollable dendrite growth and infinite volume change. Here, inspired by superior catalytic effects of single‐atom catalysts, carbon‐supported single atomic Co with asymmetric N, O‐coordination (Co‐N/O) is developed for Li metal battery. Experimental results and theoretical calculations indicate that single atomic Co atoms with asymmetric N, O‐coordination present enhanced binding ability toward Li in comparison with N‐coordinated atomic Co site and isolated O site, enabling uniform Li plating/stripping. Moreover, the asymmetric N, O‐coordination around Co atoms induces co‐activation effects, lowering the energy barriers toward Li+ to Li0 conversion and largely promoting the deposition kinetics. When used as a Li deposition host, the Co‐N/O achieves a high average coulombic efficiency of 98.6% at a current density of 1 mA cm−2 and a capacity of 2 mAh cm−2, long cycling life of 2000 h in symmetrical cells, and excellent rate performance (voltage hysteresis of 23 mV at 8 mA cm−2). This work provides a comprehensive understanding of single atomic metals with asymmetric heteroatom coordination in the design of Li metal anode.

show abstract

Section: Resultsmentioning

confidence: 99%

Asymmetric N, O‐Coordinated Single Atomic Co Sites for Stable Lithium Metal Anodes

Fang

et al. 2023

Energy & Environ Materials

View full text Add to dashboard Cite

show abstract

“…Through the classification and judgment of the medial axis, the features of the automotive body panels such as beads, fillets, flanges and tabs can be identified. Li et al [18] thoroughly studied the design method of trimming inserts for automotive panels, and solved the problem of curve offset and its anomaly, so as to realize the automation of trimming insert block design. Due to the complexity of the stamping process, a large number of studies have focused on the local aspects, which makes it difficult to form an effective automatic design system.…”

Section: Related Workmentioning

confidence: 99%

Research on automatic analysis and layout system of the stamping process for automotive panels and its key technologies

Kong,

Lei,

Chao

et al. 2023

Int J Adv Manuf Technol

Self Cite

View full text Add to dashboard Cite

The stamping process analysis and layout of automotive panels are extremely complex and time-consuming, which directly affects the quality and cycle of product development. Based on the CAGD theory of complex curves and surfaces, process design knowledge, and multidisciplinary optimization techniques, an intelligent automatic process analysis and layout system has been developed. The process feature analysis method based on discretization and merging idea has been proposed to accurately and automatically identify process features such as piercing, trimming, flanging and restricting. The process feature dispersion method based on curvature and normal variation of the forming surface is proposed to ensure the accuracy of feature dispersion. The combinatorial optimization algorithm is proposed to merge the discrete features according to the stamping direction and the geometric parameters of the features to reduce the number of process steps as much as possible. Moreover, a process constraint diagram with combined features is constructed, which is used as the initial solution and sequence constraint conditions for the process layout to effectively ensure the rationality of the process layout. Based on the die design rules, the simplified tools of the process features are created, and the rapid interference detection algorithm of the tools is proposed to realize the automatic layout and optimization of the stamping process. Finally, the aforementioned algorithms are seamlessly integrated into the NX software to develop an automatic analysis and layout system for the automotive panel stamping process. The feasibility, accuracy and efficiency of the system have been demonstrated through the example of the wing panel and the system has been successfully applied in enterprises.

show abstract

“…In Hao and Wang's research, the 3D offset of trimming lines is based on CAD software. Li et al [13] provided a detailed description of the components and design requirements of trimming inserts and proposed a 2D and 3D curve offset method on self-intersection detection. However, the curve offset method based on self-intersection detection cannot handle the offset problems along the trimming direction.…”

Section: Introductionmentioning

confidence: 99%

Robust design method and intelligent system for trimming die of complex automotive panel

Xilei,

Guochao,

Zhibing

et al. 2024

Preprint

View full text Add to dashboard Cite

The design process of automotive trimming die is very complicated, time-consuming and error-prone because of the complex geometric shape of the part surfaces and the trimming lines. This paper presents a robust design method for trimming die based on template subtraction and bounding volume strategy (TSBV) to unify different design process of trimming structure. The novel horizontal and vertical offset algorithms are developed to construct the quality derived surfaces based on geometric offset mapping (DS-GOM) quickly and stably, which are applied to generate the bounding surfaces of the template solids. A robust and intelligent design system for trimming die of automotive panel is implemented on NX platform in this paper. And the intelligent system is adopted to design the trimming die for the actual and classical automotive panels to verify the effectiveness and stability of the developed system. Case studies and industrial applications have demonstrated that the system can improve the design efficiency by 74.2% compared with generic design system.

show abstract

Automatic design for trimming die insert of automotive panel

Cited by 7 publications

References 24 publications

Asymmetric N, O‐Coordinated Single Atomic Co Sites for Stable Lithium Metal Anodes

Asymmetric N, O‐Coordinated Single Atomic Co Sites for Stable Lithium Metal Anodes

Research on automatic analysis and layout system of the stamping process for automotive panels and its key technologies

Robust design method and intelligent system for trimming die of complex automotive panel

Contact Info

Product

Resources

About