Identification of failure modes to apply condition monitoring methods on critical components of a hydraulic stamping press machine

• Main Author: de Figueiredo Tomás, Diogo
• Format: Others
• Language: English
• Published: Luleå tekniska universitet, Drift, underhåll och akustik 2020
• Subjects: Other Engineering and Technologies not elsewhere specified; Övrig annan teknik
• Online Access: http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-80040

This thesis is the result of a four months internship in a company that aims to transform technology into value for industry. The industries face a wide range of engineering challenges. The requirements and competitiveness of the industry demands high dependability of the assets. During operations of hydraulic stamping presses, unexpected failures may happen, affecting the production and the overall equipment effectiveness, and therefore, the objectives of the company. It might have serious repercussions, both monetary and reputational, this last one normally difficult to recover from. That is the reason why it is important to find solutions which can prevent these situations to happen. One of the challenges with hydraulic press stamping machines is that there are multiple failure modes that affect the machine dependability. There is a big variety of sensor technologies available in the market, that can be used to monitor the health condition of the hydraulic stamping press machines, providing decision makers with reliable information to coordinate maintenance activities. However, it is required to the users to know the specific condition monitoring methods for each failure mode. The present thesis has the purpose to identify and propose strategies in order to leverage the dependability of hydraulic stamping press machines, to achieve the performance objectives. It serves also as base for the creation of future maintenance plans. The first step is to understand the system operation under study, and then identify failure modes that might happen in the asset. The next step is to select and suggest condition monitoring methods to monitor the machine’s failure modes. Based on this information, excellence in the planning of maintenance and production can be achieved. The Reliability Centered Maintenance (RCM) method and the Failure Modes, Effect and Criticality Analysis (FMECA) were used in present thesis to assess failure modes, criticality and prioritize maintenance interventions. The thesis work presents condition monitoring methods for the analysed subsystems of the stamping press machine. The failure analysis of the subsystems and the proposed condition monitoring methods were based on the related literature and technical staff recommendation. How proposed condition monitoring methods can be complemented with further analysis is discussed. A qualitative approach was used to rank the selected subsystems and components based on their criticality. As a conclusion, the slide of the guide rail was considered the most critical component. The reason is that all the press operation is based on force and guiding precision.