Taschenbuch der Mathematik und Physik

Hering, Ekbert; Martin, Rolf; Stohrer, Martin

doi:10.1007/978-3-540-78684-9

Cited by 5 publications

(3 citation statements)

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“…6, the punch is only engaged in a small angular range of during the cutting process . applies for sharp angles [7]. Divided into its X and Y components the following equations for punch and die cylinders result at any angle of rotation.…”

Section: Kinematics Of Cutting Processmentioning

confidence: 98%

“…Another advantageous token is that rotary cutting devices are noise-damped and low-vibration machines and are requiring less floor space than stamping systems. [7] As a result of the rotary cutting process the kinematic motion is described by cycloid movement. The cycloid is a curve that is drawn by a point on the punch as the tool roller moves along a straight line or orbits the rim of a circle wheel.…”

Section: Differences In the Process Of Conventional And Rotary Cumentioning

confidence: 99%

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Rotary cutting as an alternative method in the processing of electrical steel strip: Geometric and kinematic determination of the process setup

Hubert

Rosenow

Franke

et al. 2015

2015 5th International Electric Drives Production Conference (EDPC)

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Improving the efficiency in production is always the aim. In many applications, where progressive stamping approaches the technological limits, rotary cutting is successful. Relevant applications to name are the processing of paper, card boxes, packaging and simple perforated steel profiles. The main limiting factors of the stamping technology are the accelerations and decelerations in sheet feed and stamping motion. In contrast rotary cutting is a continuous process which leads to greater speeds and higher output. While performing the electrical steel strip between two cylindrical tools in stamp and die arrangement, the laminations are being cut out. Rotary cutting in the manufacture of laminations is a great challenge and a research topic at the Bavarian Technology Center for Electric Drives at the FAU. This paper provides the main technological differences between progressive stamping and rotary cutting regarding the process structure. Furthermore the geometric and technical parameters of the rotary cutting process are described mathematically. Finally the correlation of process parameters are identified.

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Section: Kinematics Of Cutting Processmentioning

confidence: 98%

Section: Differences In the Process Of Conventional And Rotary Cumentioning

confidence: 99%

Rotary cutting as an alternative method in the processing of electrical steel strip: Geometric and kinematic determination of the process setup

Hubert

Rosenow

Franke

et al. 2015

2015 5th International Electric Drives Production Conference (EDPC)

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“…[1] If this is related to entire component parts made of ferromagnetic materials then the change in the entire length is the sum of all the individual domain length changes. Inverse magnetostriction (also: Villari-Effect, named after Emilio Villari, Italian physicist 1836-1904) describes the change in magnetic susceptibility, the measure of a material's magnetizability, [2] during elastic deformation. Here, the material's magnetic properties change as a function of the operating mechanical stresses because the individual domains are aligned parallel to the direction of strain.…”

mentioning

confidence: 99%

Magnetic Magnesium Alloys Based on MgZn and SmCo with Sensory Properties

et al. 2011

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Reducing inertial masses of engineering equipment or vehicles to lower their energy requirements necessitates the use of lightweight materials possessing high static and cyclic strengths for lower densities. If, in doing this, over dimensioning of mechanical components is to be avoided then a design which is precisely matched to the loading leads to high elastic stresses and strains in the material employed. In order to avoid over loading and plastic deformation, the service loads applied to the component must be monitored. With the aid of such measured loading history data, the resulting fatigue life can be derived so that the maintenance intervals can be planned and subsequent generations of components can be optimized. If the component possesses magnetic properties, it can serve as a self-sensoring device since relevant information about the operating conditions can be collected using the magnetic material. This information can be read out and processed during the component's service by utilizing modern methods of non-destructive component testing and material characterization such as high resolution eddy current technology using harmonic analysis.According to Bozorth, the magnetic domains' length in a ferromagnetic material changes as soon as the domains' direction of magnetization is modified (magnetostriction). [1] If this is related to entire component parts made of ferromagnetic materials then the change in the entire length is the sum of all the individual domain length changes. Inverse magnetostriction (also: Villari-Effect, named after Emilio Villari, Italian physicist 1836-1904) describes the change in magnetic susceptibility, the measure of a material's magnetizability, [2] during elastic deformation. Here, the material's magnetic properties change as a function of the operating mechanical stresses because the individual domains are aligned parallel to the direction of strain. The utility of the inverse magnetostriction effect to determine the applied mechanical forces has already been demonstrated in nickel by Kaleta and Ż ebracki. [3] According to this, the voltage measured by means of a coil increases proportionally to the operating mechanical stresses within the elastic range up to the yield point. Thus, on monitoring the component using measuring technology, the quantitative data can be collected for the instantaneously operating load condition. Klever et al. [**] This research is sponsored by the German Research Foundation (DFG) within the subproject E2 ''Magnetic Magnesium Alloys'' of the Collaborative Research Center 653 ''Gentelligent Components in their Lifecycle.'' Gentelligent (genetically intelligent) components describe a new kind of machine parts which are capable of collecting, pre-processing, and storing information (e.g., temperature and forces during use of the component).In this article, manufacture of a magnetic magnesium alloy based on the known magnesium alloys AZ91 or ZEK200 together with samarium-cobalt is investigated. The objective of the investigations is to produce an Mg ...

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Operational RMGC-Planning Problems

Kemme

2012

Contributions to Management Science

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Taschenbuch der Mathematik und Physik

Abstract: Die Deutsche Nationalbibliothek verzeichnet diese Publikation in der Deutschen Nationalbibliografie; detaillierte bibliografische Daten sind im Internet über http://dnb.d-nb.de abrufbar.

Cited by 5 publications

References 0 publications

Rotary cutting as an alternative method in the processing of electrical steel strip: Geometric and kinematic determination of the process setup

Rotary cutting as an alternative method in the processing of electrical steel strip: Geometric and kinematic determination of the process setup

Magnetic Magnesium Alloys Based on MgZn and SmCo with Sensory Properties

Operational RMGC-Planning Problems

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