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17 results on '"Plakhotnik, Denys"'

13. Shifting value stream patterns along the product lifecycle with digital twins.

Author

Dittrich, Marc-André, Schleich, Benjamin, Clausmeyer, Till, Damgrave, Roy, Erkoyuncu, John Ahmet, Haefner, Benjamin, de Lange, Jos, Plakhotnik, Denys, Scheidel, Wieben, and Wuest, Thorsten

Abstract

The concept of digital twins promises high potentials for product design, manufacturing, user experience and recycling. Thus, digital twins have received increasing interest in academia and industry. However, the actual benefits of digital twins remain in many cases unclear. This article aims to summarize selected recent developments in this field and demonstrate use cases from different phases of the product lifecycle. For that purpose, examples from the design, manufacturing, use and recycling phase are presented. In a subsequent discussion, ideas for new value stream patterns using digital twins are envisioned and research questions are derived. [ABSTRACT FROM AUTHOR]

Published
2019
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14. Adaptive Ortho-Planar Toolpath Planning for Five-Axis Milling Considering Tool Swept Volumes

Author

Plakhotnik, Denys and Lauwers, Bert

Subjects
Five-axis milling, Toolpath planning, Computer aided manufacturing, Swept volume
Abstract

In this paper, a novel approach for five-axis toolpath planning taking tool swept volumes and machining performance into account has been introduced. The toolpath generation is based on cutting planes slicing a meshed surface to provide toolpath tracks on the surface. The cutting planes can be orthogonal to each other, and positions of these planes are computed consequently so that a next iteration considers regions machined at the previous iterations. The developed algorithm alternates between several candidate tracks to ensure that a track with the best performance, which may be formulated variously, is selected. Each candidate track is computed to result in a tool swept volume that completely removes stock material between the toolpath track and the boundary of the un-machined region. Several planning strategies can be applied in order to obtain a machined surface with scallop height not exceeding a given value. ispartof: 1st International Conference on Virtual Machining Process Technology location:Montreal, Canada date:28 May - 1 Jun 2012 status: published

Published
2012

15. Five-axis milling tool path generation with dynamic step-over calculation based

Author

Lauwers, Bert and Plakhotnik, Denys

Subjects
Toolpath, Computer Aided Manufacturing (CAM), Milling
Abstract

This paper describes the development of a five-axis tool path generation algorithm for the machining of complex shaped parts using flat-end tools. In order to reduce the machining time and to ensure optimal quality, the step-over is optimized in each tool contact point. This step-over calculation is obtained through the integration of a newly developed algorithm for material removal simulation. The latter is performed by calculating swept volumes which represent tool motions interpolated according to the machine kinematics. The developed algorithm has been implemented for contour like (spiral) strategies and validated through the machining of an industrial example. 2012 CIRP. ispartof: CIRP Annals. Manufacturing Technology vol:61 issue:1 pages:139-142 status: published

Published
2012

17. Discrete Cutting Force Model for 5-Axis Milling with Arbitrary Engagement and Feed Direction.

Author

Berglind, Luke, Plakhotnik, Denys, and Ozturk, Erdem

Abstract

5-axis machining operations bring new challenges for predicting cutting forces. Complex tool workpiece engagements and tool orientations make it difficult to adapt 3-axis process models for 5-axis operations. A new model is developed to predict cutting forces with arbitrary tool/workpiece engagement and tool feed direction. A discretization approach is used, in which the tool is composed of multiple cutting elements. Each element is processed to determine its effect on cutting forces, and global forces are determined by combining the elemental effects. Cutting tests are conducted to verify force predictions, where the tool/workpiece engagement is provided through a geometric software application. [ABSTRACT FROM AUTHOR]

Published
2016
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