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- Title
Structural design for open gap stamping press.
- Authors
Chang, Chia-Hung; Liao, Bing-Jyun; Kuo, Chun-Chih
- Abstract
The proposed paper uses Taguchi design of experiments and topology optimization to design a low throat angle and lightweight structure of an open gap (C-frame) stamping press. First, finite element analysis was used for discussing the effects of frame structure deformation by various parameters, such as upper round corner (R1), eccentric distance of upper round corner (L1), throat depth (K), lower round corner of throat (R2), and eccentric distance of lower round corner of throat (L2). With throat angle as the quality objective, we conducted single-objective optimization using Taguchi's smaller-the-better formula. The optimal values of the quality objectives were as follows: R1 was 60 mm, L1 was 30 mm, L2 was 340 mm, and R2 was 48 mm, the resulting throat angle of which was 0°1′18.99″. The throat angle resulting from this parameter combination in the static analysis with 44% force area was 0°1′18.50″. The weight of the frame was approximately 5971 kg. We also confirmed the influence of the four process parameters on the quality objectives and their mathematical relationships using analysis of variance (ANOVA) and multiple regression analysis. Next, LSM (level set method) topology optimization was used to create an optimized structure. The analysis of the optimized structure using LSM showed that the deformation with 100% force area increased by 2.6%. However, the throat angle decreased by 0°0′0.78″, and the mass of the machine dropped by 444 kg. The proposed paper shows the process of using a combination of optimization methodologies to create an optimal structure, and the results show that the proposed methodology can improve not only throat angle but also structure weight.
- Publication
International Journal of Advanced Manufacturing Technology, 2024, Vol 134, Issue 1/2, p853
- ISSN
0268-3768
- Publication type
Article
- DOI
10.1007/s00170-024-14146-x