The Experts below are selected from a list of 122103 Experts worldwide ranked by ideXlab platform
Robert Schmitt - One of the best experts on this subject based on the ideXlab platform.
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GUIDELINES FOR TRACEABLE MEASUREMENTS ON Machine Tools
2013Co-Authors: Robert Schmitt, Martin PeterekAbstract:Flexible manufacturing processes for high quality products at low costs are one of the main research objectives in the field of production technology. The quality inspection of large or complex workpieces manufactured on Machine Tools often takes place beside the production line. To assure the traceability of the quality inspection the features are measured on a CMM in an isolated measurement room. The high invest for a CMM and influences like transport, handling and the loss of the original set up show the need for a Machine tool integrated traceable measuring process for product’s quality assurance. Touch probes can be found in many new Machine Tools and shall provide the possibility of testing product characteristics right after the manufacturing process. But due to disturbances like Machine defects or temperature fluctuations, the measurement process on the Machine tool is not traceable. The measurement data are not comparable and cannot be used for process improvements or process control. New approaches at WZL are aiming to assure the traceability of the inspection processes on Machine Tools and Multi Technology Platforms (MTP). The fusion of appropriate methods for the traceability of CMM’s and innovative calibration methods for Machine Tools will allow the determination of a measurement uncertainty for the measurement system “touch probe and Machine tool”. Different methods for the uncertainty evaluation of CMMs have been examined and validated for Machine Tools. Within the research activities a guideline has been developed that will allow the implementation of a traceable measurement process on Machine Tools. The objectives of the research activities are part of the Cluster of Excellence ‘Integrative Production Technology for high Wage Countries’ at the RWTH Aachen.
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Thermal issues in Machine Tools
CIRP Annals - Manufacturing Technology, 2012Co-Authors: Josef Mayr, M. Alkan Donmez, Eugen Uhlmann, Peter Shore, Jerzy Jedrzejewski, Wolfgang Knapp, Frank Hartig, Klaus Wendt, Toshimichi Moriwaki, Robert SchmittAbstract:This paper presents a review of the latest research activities and gives an overview of the state of the art in understanding changes in Machine tool performance due to changes in thermal conditions (thermal errors of Machine Tools). The topics are focused on metal cutting Machine Tools, especially on turning and milling Machines as well as machining centres. The topics of the paper thermal issues in Machine Tools include measurement of temperatures and displacements, especially displacements at the tool centre point, computations of thermal errors of Machine Tools, and reduction of thermal errors. Computing the thermal errors of Machine Tools include both, temperature distribution and displacements. Shortly addressed is also to avoid thermal errors with temperature control, the influence of fluids and a short link to energy efficiency of Machine Tools. The paper presents the summary of research work in the past and current. Research challenges in order to achieve a thermal stable Machine tool are discussed. The paper apprehend itself as an update and not a substitution of two published keynote papers of Bryan et al. [28] in 1990 and Weck et al. [199] in 1995. © 2012 CIRP.
Josef Mayr - One of the best experts on this subject based on the ideXlab platform.
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Fluid elements in Machine Tools
CIRP Annals - Manufacturing Technology, 2017Co-Authors: Konrad Wegener, Josef Mayr, Marion Merklein, Bernd-arno Behrens, Tojiro Aoyama, Matej Sulitka, Jürgen Fleischer, Peter Groche, Bilgin Kaftanoğlu, Nicolas JochumAbstract:Fluids play a major role for production Machinery and serve for very different tasks as lubricating, tempering, cleaning, transmitting force and energy. Due to maintenance requirements and the environmental impact their utilization is under discussion and alternatives are looked for. In this paper an overview of the latest research activities in the field of fluidic elements on Machine Tools is presented. The topic of the paper includes an overview of the fluids used in Machine Tools, the usage of fluidic elements, supply and treatment units, and their influence on Machine Tools performance. A link to fluidic media on energy efficiency is given. Research challenges in order to increase the performance of Machine Tools are discussed. The paper excludes metal working fluids, which have been treated in Brinksmeier et al. [33].
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Thermal issues in Machine Tools
CIRP Annals - Manufacturing Technology, 2012Co-Authors: Josef Mayr, M. Alkan Donmez, Eugen Uhlmann, Peter Shore, Jerzy Jedrzejewski, Wolfgang Knapp, Frank Hartig, Klaus Wendt, Toshimichi Moriwaki, Robert SchmittAbstract:This paper presents a review of the latest research activities and gives an overview of the state of the art in understanding changes in Machine tool performance due to changes in thermal conditions (thermal errors of Machine Tools). The topics are focused on metal cutting Machine Tools, especially on turning and milling Machines as well as machining centres. The topics of the paper thermal issues in Machine Tools include measurement of temperatures and displacements, especially displacements at the tool centre point, computations of thermal errors of Machine Tools, and reduction of thermal errors. Computing the thermal errors of Machine Tools include both, temperature distribution and displacements. Shortly addressed is also to avoid thermal errors with temperature control, the influence of fluids and a short link to energy efficiency of Machine Tools. The paper presents the summary of research work in the past and current. Research challenges in order to achieve a thermal stable Machine tool are discussed. The paper apprehend itself as an update and not a substitution of two published keynote papers of Bryan et al. [28] in 1990 and Weck et al. [199] in 1995. © 2012 CIRP.
Toshimichi Moriwaki - One of the best experts on this subject based on the ideXlab platform.
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Thermal issues in Machine Tools
CIRP Annals - Manufacturing Technology, 2012Co-Authors: Josef Mayr, M. Alkan Donmez, Eugen Uhlmann, Peter Shore, Jerzy Jedrzejewski, Wolfgang Knapp, Frank Hartig, Klaus Wendt, Toshimichi Moriwaki, Robert SchmittAbstract:This paper presents a review of the latest research activities and gives an overview of the state of the art in understanding changes in Machine tool performance due to changes in thermal conditions (thermal errors of Machine Tools). The topics are focused on metal cutting Machine Tools, especially on turning and milling Machines as well as machining centres. The topics of the paper thermal issues in Machine Tools include measurement of temperatures and displacements, especially displacements at the tool centre point, computations of thermal errors of Machine Tools, and reduction of thermal errors. Computing the thermal errors of Machine Tools include both, temperature distribution and displacements. Shortly addressed is also to avoid thermal errors with temperature control, the influence of fluids and a short link to energy efficiency of Machine Tools. The paper presents the summary of research work in the past and current. Research challenges in order to achieve a thermal stable Machine tool are discussed. The paper apprehend itself as an update and not a substitution of two published keynote papers of Bryan et al. [28] in 1990 and Weck et al. [199] in 1995. © 2012 CIRP.
Klaus Wendt - One of the best experts on this subject based on the ideXlab platform.
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Thermal issues in Machine Tools
CIRP Annals - Manufacturing Technology, 2012Co-Authors: Josef Mayr, M. Alkan Donmez, Eugen Uhlmann, Peter Shore, Jerzy Jedrzejewski, Wolfgang Knapp, Frank Hartig, Klaus Wendt, Toshimichi Moriwaki, Robert SchmittAbstract:This paper presents a review of the latest research activities and gives an overview of the state of the art in understanding changes in Machine tool performance due to changes in thermal conditions (thermal errors of Machine Tools). The topics are focused on metal cutting Machine Tools, especially on turning and milling Machines as well as machining centres. The topics of the paper thermal issues in Machine Tools include measurement of temperatures and displacements, especially displacements at the tool centre point, computations of thermal errors of Machine Tools, and reduction of thermal errors. Computing the thermal errors of Machine Tools include both, temperature distribution and displacements. Shortly addressed is also to avoid thermal errors with temperature control, the influence of fluids and a short link to energy efficiency of Machine Tools. The paper presents the summary of research work in the past and current. Research challenges in order to achieve a thermal stable Machine tool are discussed. The paper apprehend itself as an update and not a substitution of two published keynote papers of Bryan et al. [28] in 1990 and Weck et al. [199] in 1995. © 2012 CIRP.
Frank Hartig - One of the best experts on this subject based on the ideXlab platform.
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Thermal issues in Machine Tools
CIRP Annals - Manufacturing Technology, 2012Co-Authors: Josef Mayr, M. Alkan Donmez, Eugen Uhlmann, Peter Shore, Jerzy Jedrzejewski, Wolfgang Knapp, Frank Hartig, Klaus Wendt, Toshimichi Moriwaki, Robert SchmittAbstract:This paper presents a review of the latest research activities and gives an overview of the state of the art in understanding changes in Machine tool performance due to changes in thermal conditions (thermal errors of Machine Tools). The topics are focused on metal cutting Machine Tools, especially on turning and milling Machines as well as machining centres. The topics of the paper thermal issues in Machine Tools include measurement of temperatures and displacements, especially displacements at the tool centre point, computations of thermal errors of Machine Tools, and reduction of thermal errors. Computing the thermal errors of Machine Tools include both, temperature distribution and displacements. Shortly addressed is also to avoid thermal errors with temperature control, the influence of fluids and a short link to energy efficiency of Machine Tools. The paper presents the summary of research work in the past and current. Research challenges in order to achieve a thermal stable Machine tool are discussed. The paper apprehend itself as an update and not a substitution of two published keynote papers of Bryan et al. [28] in 1990 and Weck et al. [199] in 1995. © 2012 CIRP.
