Machine learning strategy of extract and combine NC-file data for machine time visualisation

The value of harnessing digital data has proven beneficial for the manufacturing industry by reducing production times, efficient use of resources, and informed decision making. Manufacturing companies are increasingly recognising the importance of leveraging real-time insight for improving the effectiveness of their production assets. While digital data may be obtained from different sources, it remains a challenge to bridge the gap between data sources and synthetise the information to inform production managers.

Smartfactory is a leading developer of software solutions for manufacturing data visualisation such as CNC machining. These machines are an integral part of manufacturing processes and make use of valuable NC-file data, which contains the geometry-based machining instructions of each item produced. Hawo and Technology Twente, companies manufacturing their products through CNC machines, face the challenge of obtaining detailed view on cost-per-article information, which involve machining time per article.

The ML2NC will explore and implement digital approaches, such as machine learning, to identify and update machining times based on NC file data, thereby contributing to improve production efficiency and time accuracy. The project will follow a structured approach to define the data extraction process, identify valuable data sets and assess the role of machine learning for this process. Developing and implementing such tools will enable Smartfactory, Hawo and Technology Twente to gain valuable production benefits. The gained insights to accurately determine machining times for each item will lead to more accurate cost estimations, support production planning, and inform the projects partner’s decision making. The integration of advanced data integration techniques, including machine learning, will also position these companies at the forefront of manufacturing innovation, driving long-term competitive advantage and operational excellence.

Industry partner

APPROACH

The ML2NC project leverages the combined expertise of the Fraunhofer Innovation Platform at the University of Twente and SmartFactory to address the challenges of article information extraction from instruction files. The project begins with a comprehensive analysis of the instruction files’ format, identifying possible article information locations. A critical focus will be placed on company-independent sections to ensure flexibility. By researching different approaches to analyse the instruction files and extract the article information, such as natural language based or machine learning based approaches, the project aims to tailor solutions to the unique setups and needs of the consortium.

The developed natural language approaches will be rigorously tested, highlighting their benefits and drawbacks, and tested on the shopfloor of the manufacturing companies. For the machine learning approach, the requirements will be analysed, and a setup will be designed for the follow-up project. Dissemination activities, including reports, workshops, and technical documentation, will facilitate knowledge-sharing and ensure the model’s applicability across industries, improving machining insights for the manufacturing market.

OUTCOME

The ML2NC project successfully implemented different natural language models to analyse the metadata of instruction files and extract the relevant information. A total of three different language approaches were evaluated, two of which showed perfect matches between instruction files and articles. However, these natural language models require manual finetuning for each manufacturing company. A machine learning approach was designed, the pitfalls were investigated, and the requirements were identified.

• Natural language approaches showed perfect matchings between files and articles
• However, this approach requires finetuning per manufacturing company
• Machining instructions are standardised
• Machining instructions visualisation showed identifiable article features
• Requirements are identified and a setup for a machine learning approach is designed

The findings provide insights into the importance of capturing article data from machining instruction files and generating insights into the shopfloor. Future work will focus on implementing the machine learning approach and developing a model that can extract information regardless of manufacturing company. Extracting real-time information from the shopfloor will further optimize manufacturing schedules and provide valuable insights.

This project was made possible through the Regio Deal supported by the Province of Overijssel and the Dutch State.

FOR MORE INFORMATION ABOUT ML2NC, PLEASE FEEL FREE TO REACH OUT TO

Barry te Dorsthorst

Barry te Dorsthorst

Research Engineer

Reinier Stribos

Research Engineer

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