Finite element simulation and experimental investigation of the effect of clearance on the forming quality in the fine blanking process

Sahli, Mohamed; Roizard, Xavier; Assoul, Mohamed; Colas, Guillaume; Giampiccolo, Sylvain; Barbe, Jean-Pierre

doi:10.1007/s00542-020-04983-7

Cited by 16 publications

(5 citation statements)

References 33 publications

(34 reference statements)

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“…With the rapid development of China's industrial modernization, the structure of ne blanking parts is becoming more and more complex, the accuracy requirements are higher, the application range is wider and wider, and higher requirements are put forward for the service life of ne blanking die. e large-scale, complex, high-precision, and high-e ciency of molds all depend on the improvement of mold life [2]. However, the structure of ne blanking die is complex.…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of Fine Blanking Die Wear and Die Performance Analysis

Li¹,

Zhao²,

Hao

2022

Journal of Chemistry

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In order to study the die wear law of rotary fine blanking helical cylindrical gear, a three-dimensional rigid plastic finite element model of rotary fine blanking helical cylindrical gear is established on the Deform-3D software platform. Based on the Archard wear model, this paper analyzes the die wear in the fine blanking process, obtains the wear distribution of each point on the working surface of the die, determines the maximum wear area, and makes a comparative analysis with the fine blanking die wear of spur gear. Through the single factor variable method, this paper studies the effects of reverse jacking force, blank holder force, blanking speed, punch and die clearance, die fillet radius, and die initial hardness on die wear. The test results show that when the punch reduction is the same, the wear of the female die of fine blanking helical cylindrical gear is greater than that of fine blanking spur cylindrical gear. When the counter jacking force increases from 100 kN to 200 kN, the maximum wear of the die gradually increases from 6.91 × 10–6 mm to 9.38 × 10–6 mm; when the blank holder force increases to 3/4 of the blanking force, the die wear decreases with the increase of blank holder force; it is ideal when the blanking clearance is 0.5% t (0.02 mm). Conclusion. The wear model can accurately predict the relationship between main process parameters and wear in the process of rotary fine blanking, and the measures to reduce die wear are put forward from the aspect of process design.

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Section: Introductionmentioning

confidence: 99%

Numerical Simulation of Fine Blanking Die Wear and Die Performance Analysis

Li¹,

Zhao²,

Hao

2022

Journal of Chemistry

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“…Liu et al [14] used FEM to reduce die-roll size in the fine blanking process by modifying the die structure, while He et al [15] optimized the clearance range in blanking processes through FEM, determining an optimal clearance for non-oriented electrical steel sheets. Sahli et al [16] observed that a reduction in clearance could delay fracture initiation, with FEM simulation results aligning with experimental data.…”

Section: Introductionmentioning

confidence: 63%

Neural Network Application for Fine-Blanked Edge Quality in Rolled Steel Sheets

Nakkhlai

2023

GEOMATE

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The backing plate plays a crucial role in drum brakes, pushing the brake shoe against the drum for effective vehicle braking and road safety. Manufactured from steel sheets, it exhibits properties akin to a composite material, with characteristics varying based on directionality. The backing plate's profile features a continuous series of arcs, making the fine-blanked edge quality contingent on the arc radius. This research delved into fineblanked manufacturing through a combination of experimentation and simulation to discern the impact of the arc radius on edge quality. Employing a scanning electron microscope for edge quality investigation and benchmarking the finite element model against it, the study ensured a comprehensive understanding. The wellaligned finite element model served as input data for training an artificial neural network (ANN), specifically engineered to accurately estimate backing plate edge quality. This ANN is anticipated to be instrumental in designing future steel plate profiles boasting multiple arcs, offering precision in the manufacturing process for enhanced edge quality.

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“…where σ is the effective stress, ε the effective strain, K is the material constant, and n the strain hardening exponent [20].…”

Section: Numerical Simulation and Model Verificationmentioning

confidence: 99%

Finite Element Analysis of Notch Depth and Angle in Notch Shear Cutting of Stainless-Steel Sheet

Engin¹

2023

sv-jme

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Piercing is a crucial process in the sheet metal forming industry, and the surface quality of the pierced part is an important parameter that defines the overall quality of the product. However, obtaining a good surface quality is a challenging task that depends on the effect of several process parameters and necessitates the use of non-conventional procedures. Notch shear cutting is a relatively new progressive approach in which the workpiece is indented with a notch form with a predefined notch angle and depth, and then the indented workpiece is subjected to conventional piercing. In this study, conventional piercing and notch shear cutting processes were experimentally performed on 1.4301 stainless steel sheet of 2 mm thickness. Then, finite element (FE) analyses were conducted utilizing Deform-2D software. After ensuring that the experimental and simulation works were consistent with each other, the FE analysis of notch shear cutting was carried out for three distinct notch depths (15 %, 30 %, and 60 % of the workpiece thickness) and six different notch angles (10º, 20º, 30º, 40º, 50º, and 60º). Investigations were performed on shear zone length distributions, which are direct indications of the surface quality on sheared workpieces, crack propagation angles, and required cutting loads. The best surface quality was obtained when the notch angle was set to 50º and the notch depth was set to 15 % of the workpiece thickness. It was also observed that notch angle and notch depth had a certain level of influence on required cutting load.

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Finite element simulation and experimental investigation of the effect of clearance on the forming quality in the fine blanking process

Cited by 16 publications

References 33 publications

Numerical Simulation of Fine Blanking Die Wear and Die Performance Analysis

Numerical Simulation of Fine Blanking Die Wear and Die Performance Analysis

Neural Network Application for Fine-Blanked Edge Quality in Rolled Steel Sheets

Finite Element Analysis of Notch Depth and Angle in Notch Shear Cutting of Stainless-Steel Sheet

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