Simulation of Multi-Stage Fine Machining Processes at the Example of Valve Guide and Valve Seat

Bölling, Christian; Abele, Eberhard

doi:10.4028/www.scientific.net/amm.885.255

Cited by 2 publications

(3 citation statements)

References 14 publications

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“…6. 24 Resilience application model with exemplary progressions for a system applying a booster a resilience characteristics, b resilience behaviour, c disruption progression, d signal progression following [146, p. 1407] the car resumes its functional performance without additional measure, as shown by the upper grey curve which reaches its original value again, cf. [146, p. 1410 et seq.].…”

Section: The Resilience Application Modelmentioning

confidence: 99%

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Strategies for Mastering Uncertainty

Pfetsch

Abele

Altherr

et al. 2021

Springer Tracts in Mechanical Engineering

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This chapter describes three general strategies to master uncertainty in technical systems: robustness, flexibility and resilience. It builds on the previous chapters about methods to analyse and identify uncertainty and may rely on the availability of technologies for particular systems, such as active components. Robustness aims for the design of technical systems that are insensitive to anticipated uncertainties. Flexibility increases the ability of a system to work under different situations. Resilience extends this characteristic by requiring a given minimal functional performance, even after disturbances or failure of system components, and it may incorporate recovery. The three strategies are described and discussed in turn. Moreover, they are demonstrated on specific technical systems.

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Section: The Resilience Application Modelmentioning

confidence: 99%

“…Uncertainty in the form of disturbances regularly influences the reaming process in industrial practice. Typical disturbances are axis misalignment, run-out errors and inclined surfaces with sloped pilot holes [23,24].…”

Section: Resilient Process Chain Applied To the Active Air Springmentioning

confidence: 99%

Strategies for Mastering Uncertainty

Pfetsch

Abele

Altherr

et al. 2021

Springer Tracts in Mechanical Engineering

Self Cite

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“…The empirical cutting force model is validated by implementing it within a simulation model, as shown in [33], based on the mechanistic framework and comparing the resulting torque to experimental data. In the simulation the tool-workpiece intersection is calculated with a chip crosssection model [6] using the extracted 2D element set model from Sect.…”

Section: Model Validationmentioning

confidence: 99%

Measuring and modelling of process forces during tapping using single tooth analogy process

Geßner¹,

Weigold²,

Abele³

2020

Prod. Eng. Res. Devel.

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For machining internal threads, tapping is a commonly used process. However, due to the complex geometry of the tapping tool, each tooth has a unique geometry resulting in individual forces. Since the forces act synchronously during the process, they partly compensate each other. However, since resulting forces in tapping can cause undesired deflection of the tool which can lead to threads that are not true to gauge or tool breakage, the knowledge of the forces is crucial. To predict the occurring forces on each tooth, different modelling approaches can be used. An approach based on the chip load-cutting force relationship is the mechanistic modelling. Therefore, a suitable force model is of central importance. An empirical force model can be established using an analogy process. Within this work a single tooth analogy process is presented to measure the forces of each tooth separately. By means of a geometrical analysis of the real tool, the chip sizes, such as the cross-section area of the undeformed chip are calculated. Merging the measured process forces from the analogy process and the actual chip sizes, an empirical force model is set up using multivariate regression. The model is validated by implementing it in an existing framework and comparing the results to experimental data.

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Simulation of Multi-Stage Fine Machining Processes at the Example of Valve Guide and Valve Seat

Cited by 2 publications

References 14 publications

Strategies for Mastering Uncertainty

Strategies for Mastering Uncertainty

Measuring and modelling of process forces during tapping using single tooth analogy process

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