Coining of Thin Plates to Produce Micro Channel Structures

Rattay, B.

doi:10.1007/0-306-47000-4_5

Cited by 4 publications

(2 citation statements)

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“…However, the laser ablation process is not suitable for mass production because of high costs and long single-item production time. Thus, a micro coining process [ 9 ] is chosen in order to realize a large-scale production. Such a process can be integrated into the backward extrusion process commonly used for manufacturing tappets and applied in the cam-tapped-contact of the valve train.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Production Limits in Manufacturing Microstructured Surfaces Using Micro Coining

et al. 2017

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The application of microstructured surfaces is one possible method to reduce friction in lubricated contacts between components with relative movement. Due to this, the energy efficiency and the occurring wear during the operating time of the final products could be decreased. To manufacture structured surfaces economically, a micro coining process was analyzed within this study. This process offers the potential for integration into the established manufacturing processes of different final products, such as tappets used in a valve train. Thus, large-scale production is enabled. To detect the manufacturing limits of the micro coining process, the manufacturing of the coining tools as well as the coining process needs to be investigated. Within this study, the achievable accuracy and the failure of cuboid and cylindrical microstructure elements with selected dimensions were analyzed. For both types of microstructures, the minimal lateral dimensions were detected. Besides the achievable accuracy, correlations between different geometrical dimensions of the micro elements are presented. Additionally, the aspect ratio is detected as the main cause of failure for the micro coining process. In general, the suitability of a coining process for manufacturing microstructured surfaces is proven.

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Section: Introductionmentioning

confidence: 99%

Investigation of Production Limits in Manufacturing Microstructured Surfaces Using Micro Coining

et al. 2017

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“…The flash would be later machined using ECM to get the final blade with coined bevel as its sharp edge. The suggested coining process could be called micro coining because the features coined are in the range of 100 nm~100 µm [7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

The Coning Designs for the Micro Forming of a Surgical Slit Knife Using FE Simulations

Zhao

2012

AMM

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This paper deals with problems in the coining process for manufacturing surgical slit knife using two-dimensional (2D) and three-dimensional (3D) finite element (FE) simulations. The FE simulations are performed to investigate the material flow, and especially stress distribution on the coining dies. The main objective of this paper is to study the feasibility of a coining process for manufacturing a given geometry of surgical slit knife without forming defects and die failure. Very high stress distribution on the coining dies is found by 2D simulations of the coining process that exceeds the strength limit of the die material. The optimum preform and preforming die geometry are determined by FE simulations in order to reduce the die stress. 3D simulations of the preforming and coining processes are conducted with the optimal design to show that the geometry of the product can be achieved without defects by the coining process.

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Micro‐Forming

Koç

Mahabunphachai

2011

Micro‐Manufacturing

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Coining of Thin Plates to Produce Micro Channel Structures

Cited by 4 publications

References 0 publications

Investigation of Production Limits in Manufacturing Microstructured Surfaces Using Micro Coining

Investigation of Production Limits in Manufacturing Microstructured Surfaces Using Micro Coining

The Coning Designs for the Micro Forming of a Surgical Slit Knife Using FE Simulations

Micro‐Forming

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