Optimization of the pulsating curve for servo stamping of rectangular cup

Kuo, Chun-Chih; Huang, Ho‐Chuan; Li, Tse-Chang; Fang, Kai-Lun; Lin, Bor-Tsuen

doi:10.1016/j.jmapro.2020.06.004

Cited by 11 publications

(5 citation statements)

References 22 publications

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“…The designed curves are shown in Table 3. 1 The result of thickness ratio in drawing molding is recorded by using orthogonal array and DEFORM-3D software analysis simulation. Then the S/N ratios of various groups are worked out, as shown in Table 4.…”

Section: Resultsmentioning

confidence: 99%

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Using finite element analysis to discuss the study of drawing of servo stamping curve

Chen

Yeh

2021

Advances in Mechanical Engineering

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This study employed different molding parameter combinations, the Taguchi method, ANOVA, and response surface methodology to perform experiments. Finite element analysis was executed to find the optimum molding parameters and increase the depth of drawing molding. The material is aluminum alloy 6016, and the servo press was adopted for the experiments. The factors influencing the drawing molding including punch fillet radius, die fillet radius, die clearance, molding curve, and mold temperature were determined. To find the optimum combination of parameters and to design 16 experimental combinations, the L16 orthogonal array of the Taguchi method was employed. According to the experimental results, the optimum parameters include punch fillet radius of 8.5 mm, die fillet radius of 8.5 mm, clearance of 1.5 t, curve 3, and the mold temperature of 20°C. Using the optimum parameter combination the molding depth could be increased greatly and the thickness ratio could be improved.

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Section: Resultsmentioning

confidence: 99%

“…The variation trend of material thickness and ultimate draw ratio are observed and the tensility higher than connecting rod actuation is obtained. [1][2][3] Then, the moldability for material draw ratio in different conditions is analyzed. The flow of material, drawing ratio, and load are discussed.…”

Section: Introductionmentioning

confidence: 99%

Using finite element analysis to discuss the study of drawing of servo stamping curve

Chen

Yeh

2021

Advances in Mechanical Engineering

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“…studied the SUS304 rectangular cup stamping and optimized the pulsating curve for a servo press using the finite element method. Meanwhile, they applied the Taguchi method to obtain the optimal parameter combinations and the optimization results showed that a shorter forming time (0.06 s less), a lower thinning ratio lower (0.1425% less), and a smaller forming force (808 N smaller) [12]. Kriechenbauer et al proposed a systematic design of deep-drawing processes with free force and motion functions on servo presses based on computational science methods.…”

Section: Strengths Weaknesses Traditional Methodsmentioning

confidence: 99%

Punch Motion Curve in the Extrusion–Drawing Process to Obtain Circular Cups

Chen

Wang

2022

Machines

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Servo press technology is gaining attention because its punch motion curve offers greater formability than that of a conventional stamping press. This study investigated the effect of punch motion curves on the circular cup extrusion–drawing process. Various punch motion curves were analyzed, and the optimal curve for application was determined. Both the extrusion–drawing process and spring back of U-shaped sheet metal were investigated. In the circular cup extrusion–drawing process, the punch motion curve of a conventional stamping press (Case A) and three punch motion curves of a servo press (Cases B–D, the strokes of which differed from that of Case A by 0.5, 1.5, and 2.5 mm, respectively) were compared, particularly regarding the effect of the coefficient of friction on the circular cup extrusion–drawing process. The simulation analysis was performed using the software program DEFORM. A set of simulated parameters were compared with experimental results. The formability, cup shape, cup height, cup thickness, extrusion force–displacement curve, stress distribution, and strain distribution were analyzed for the design of the die required. Additionally, experimental and simulation results were compared to determine the reliability and precision of the DEFORM simulations. The results indicated that the conventional punch motion curve resulted in a shorter cup, greater stress, greater strain, and the need for a greater extrusion force. By contrast, the servo punch motion curves resulted in taller cups, less stress, and less strain. The findings can serve as a reference for the development of servo presses.

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“…The main parameters that infl uence quality characteristics can be pre-dictable or unpredictable. 71 It is a measure of robustness used in Taguchi designs to identify control factors that reduce variability in a product or process by minimizing the effects of uncontrollable factors (noise factors). Control factors are independent (input) parameters that can be controlled.…”

Section: Signal To Noise Ratio (S/n) Analysismentioning

confidence: 99%

Optimization and assessment of brake pad production parameters and organic Juniperus drupacea cone powder additive ratio using the Taguchi method

Aras¹,

Tarakçıoğlu

2021

Journal of Composite Materials

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In this study, an organic brake pad content was created to increase the overall tribological performance of the automobile brake system. Brake lining samples were obtained by hot molding method using juniperus drupacea cones powder which is not found in the literature in addition to barite, phenolic resin, fiber types (glass, carbon and basalt) and coke in the lining content. In order to determine the most ideal production conditions and content ratios, parameter combinations based on the L18(21 × 35) Taguchi orthogonal index were used according to the density, hardness, wear rate, friction coefficient objective functions. The density and hardness of the samples produced based on the orthogonal design were measured. A wear test was performed on a pin-on-disc type tribometer and the wear rate and friction coefficients were calculated according to the obtained values. Signal to noise ( S/N) ratio and ANOVA analysis were performed to determine the brake pad composition with the most ideal tribological properties. According to the results, the mixing time is 15 min., the molding temperature is 160 °C, the molding pressure is 100 MPa and the molding time is 15 min., have been found to be the optimum production conditions. In addition, it was observed that the density and hardness decreased as the amount of juniperus drupacea cone powder was increased. For this reason, it has been observed that the juniperus drupacea cone powder used for the first time in the brake lining composition can be used in lining content up to 25%, preferably up to 10% by weight.

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Optimization of the pulsating curve for servo stamping of rectangular cup

Cited by 11 publications

References 22 publications

Using finite element analysis to discuss the study of drawing of servo stamping curve

Using finite element analysis to discuss the study of drawing of servo stamping curve

Punch Motion Curve in the Extrusion–Drawing Process to Obtain Circular Cups

Optimization and assessment of brake pad production parameters and organic Juniperus drupacea cone powder additive ratio using the Taguchi method

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