The PTW at the Digital Machining Market Place

Pushing ahead with digitization in production technology


Digitization is an ubiquitous topic nowadays, which is also covered comprehensively by the PTW within the framework of research in production organization and technology. Three of these research foci are presented in the online lecture series Digital Machining Market Place and thus provide an insight into the work at the institute.

The PTW invites all interested listeners to participate in these public lectures. Simply register here, stating the relevant lectures, to receive the conference link shortly before the event. Below you will find an overview of the lectures offered and a short description of contents:

01.07.2020 11:00 – 12:00 The potential of force and temperature sensor technology in cutting tools (English)

01.07.2020 13:00 – 14:00 Das Potential von Kraft- und Temperatursensorik in Zerspanungswerkzeugen (Deutsch)

02.07.2020 11:00 – 12:00 State of the Art: Process Monitoring in Industry (English)

02.07.2020 13:00 – 14:00 State of the Art: Process Monitoring in der Industrie (Deutsch)

03.07.2020 11:00 – 12:00 Pay-per-Stress: Stress-oriented, data-based payment model for machine tools (English)

03.07.2020 12:00 – 13:00 Pay-per-Stress: Stress-orientiertes, datenbasiertes Bezahlmodell für Werkzeugmaschinen (Deutsch)

1. Presentation | The potential of force and temperature sensor technology in cutting tools

The equipment of cutting tools with force and temperature sensor technology represents a great potential for performance increases in many areas of the manufacturing industry. For instance, such tools can be used to improve tool and process design and to implement process monitoring. Especially industries which are confronted with the machining of high performance materials while at the same time having to meet highest quality requirements can benefit from the process-parallel determination of the thermo-mechanical load collective and the associated influence on component quality and tool wear.

The presentation will present the results of the CHIP project, in which end milling tools were equipped with force and temperature sensors and numerous machining investigations in Ti6Al4V were carried out by varying the process parameters and the cooling lubrication strategy. In addition, the function of the tool will be demonstrated live on the machine and an outlook on future developments will be given.

Speaker: Christopher Praetzas (PTW TU Darmstadt)

Co-Speaker: C. Czettl & T. Teppernegg (CERATIZIT Austria GmbH)

2. Presentation | State of the Art: Process Monitoring in Industry

The monitoring of the production process in during manufacturing is an important factor in increasing component quality and productivity. With appropriate systems, process errors can be detected at an early stage and thus negative effects on the component can be minimized. When using process monitoring systems in industrial production, however, the sensitivity, handling and set-up effort of the respective systems must also be taken into account.

This presentation is intended to provide an overview of the current state of the art of process monitoring systems in industrial use and to show the different fields of application and their economic benefits. Furthermore, the speech gives an outlook on the potentials and developments in the age of Industry 4.0 with increasing networking and digitalization.


Prof. Dr. Garret O'Donnell (Associate Professor of Department of Mechanical Manufacturing Engineering at Trinity College Dublin (TCD), Ireland and Founder of iSentioLabs )

Prof. Dr.-Ing. Matthias Weigold (Director of Institute of Production Management, Technology and Machine Tools (PTW))

3. Presentation | Pay-per-Stress: Stress-oriented, data-based payment model for machine tools

Due to the high acquisition costs of machine tools, many companies resort to leasing models. Especially for small and medium-sized companies, the costs can be a financial challenge. In the event of above-average or improper use, the residual value of the machine can decrease significantly, so that the lessor has to take a higher risk into account due to non-transparent usage behavior. Modern machine tools are increasingly equipped with sensors to monitor machining processes. This data basis can help to draw conclusions about the wear and tear of the machine's components based on the machine's load and thus enable a new type of stress-oriented payment model including data-based services. This is based on the so-called stress factor, which describes the aggregated machine wear due to the production process.

In the context of the lecture, the objectives and current interim results of the project “Pay-per-Stress” will be presented, in which a novel data-driven payment model in machine tool manufacturing will be developed. The structural design of the model and its exemplary calculation will be discussed. In addition, the technical structure will be demonstrated using an exemplary machine at the PTW.

Speaker: Patrick Stanula (PTW TU Darmstadt)

Co-Speaker: Oliver Kohn (PTW TU Darmstadt)