Procedia CIRP最新文献_第8页

Analyzing Machining Cycle Time Anomalies via CNC and Operational Data

Procedia CIRP Pub Date : 2025-01-01 DOI: 10.1016/j.procir.2025.02.081

Noémie Vlaminck , Michel Nicolas , Tariq Benamara , Hervé Raddoux

{"title":"Analyzing Machining Cycle Time Anomalies via CNC and Operational Data","authors":"Noémie Vlaminck , Michel Nicolas , Tariq Benamara , Hervé Raddoux","doi":"10.1016/j.procir.2025.02.081","DOIUrl":"10.1016/j.procir.2025.02.081","url":null,"abstract":"<div><div>As manufacturers are transitioning to Industry 4.0, real-time monitoring of manufacturing processes has become more prevalent. This paper presents an intuitive anomaly analysis tool designed to support data-driven decision-making for multiple Computer Numerical Control (CNC) machines in a production environment. By leveraging internal Programmable Logic Controller (PLC) signals enriched with tool information from G-code, and operational scheduling data, the proposed tool identifies anomalies in machining process durations without relying on theoretical cycle time estimates from G-code or CNC interpolation strategies. Instead, it computes actual program duration distributions after applying rigorous filtering to address operational disruptions such as server issues, maintenance, or shift changes. Results reveal a near-linear correlation between these computed statistics and theoretical machining durations predicted by a machining simulator, validating the pipeline’s reliability. The developed decision-support application integrates cycle time statistics into comprehensive tables and visualizations, allowing users to analyse data at program, tooling, and G-code levels. This approach facilitates the detection of specific anomalies or bottlenecks in the process, including significant cycle time variance in tools or G-code sections, tool sequencing issues, recurrent anomalies in subprograms or G-code ranges linked with axes and table movements, unoptimized machining parameters or other causes. By focusing on robust data preparation, this work highlights the critical role of preprocessing in achieving actionable insights for production optimization.</div></div>","PeriodicalId":20535,"journal":{"name":"Procedia CIRP","volume":"133 ","pages":"Pages 471-476"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143759175","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Surface microstructuring by targeted burr formation using Ultrasonic Vibration Assisted Deformational Machining (UVADM) for improving polymer-metal bonding

Procedia CIRP Pub Date : 2025-01-01 DOI: 10.1016/j.procir.2025.02.094

Mohammad Hossein Rezaei , Ingo Schaarschmidt , Hendrik Liborius , Niclas Hanisch , Philipp Steinert , Thomas Lampke , Andreas Schubert

{"title":"Surface microstructuring by targeted burr formation using Ultrasonic Vibration Assisted Deformational Machining (UVADM) for improving polymer-metal bonding","authors":"Mohammad Hossein Rezaei , Ingo Schaarschmidt , Hendrik Liborius , Niclas Hanisch , Philipp Steinert , Thomas Lampke , Andreas Schubert","doi":"10.1016/j.procir.2025.02.094","DOIUrl":"10.1016/j.procir.2025.02.094","url":null,"abstract":"<div><div>Polymer-metal hybrids (PMH) are essential in lightweight industrial applications, particularly in the automotive and aerospace sectors. However, ensuring robust bonding between polymer and metal surfaces remains a significant challenge. Hence, surface microstructuring enables an improvement in adhesion due to mechanical interlocking. In this study, the microstructuring of the metallic surface by applying the Ultrasonic Vibration Assisted Deformational Machining (UVADM) process to enhance burr formation is analyzed. The research considers both the effect of a depth of cut (<em>a</em><sub>p</sub>) of 25 µm, and the combined influence of a superimposed Ultrasonic Vibration (UV). A 3D finite element method (FEM) simulation using ABAQUS/Explicit software was conducted to design and analyze the process conditions, including the tool geometry. The main focus of the analysis is the evolution and characterization of the burr structure. In order to consider the plastic deformation of the material, the Johnson-Cook material model was employed. Besides the FEM simulation, experimental validation was carried out using specimens made of EN AW-6082 aluminum alloy. Surface topography including burr formation was characterized using optical methods. The results demonstrate that the interaction between <em>a</em><sub>p</sub> and UV influences burr formation.</div></div>","PeriodicalId":20535,"journal":{"name":"Procedia CIRP","volume":"133 ","pages":"Pages 549-554"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143759216","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Performance and efficiency of co-simulation for milling operations in robotic machining

Procedia CIRP Pub Date : 2025-01-01 DOI: 10.1016/j.procir.2025.02.021

Hugo Dantinne , Valentin Dambly , Olivier Verlinden , François Ducobu , Edouard Riviere-Lorphevre , Bryan Olivier

{"title":"Performance and efficiency of co-simulation for milling operations in robotic machining","authors":"Hugo Dantinne , Valentin Dambly , Olivier Verlinden , François Ducobu , Edouard Riviere-Lorphevre , Bryan Olivier","doi":"10.1016/j.procir.2025.02.021","DOIUrl":"10.1016/j.procir.2025.02.021","url":null,"abstract":"<div><div>In robotic machining, tool/workpiece interaction generates forces that impact the performance of the robotic arm. This leads to defections due to its lower stiffness compared to dedicated machining machines, particularly at its joints. These deflections can degrade the quality of the machining operation, making trajectory and orientation optimization essential. Accurate optimization requires knowledge of the transient force field for the operation and a model of the robot. Currently, the simulations are performed using two in-house simulation frameworks : EasyDyn for the multibody dynamics of robot modelling and Dystamill for the modelling of the cutting forces. To enhance the simulation’s modularity, co-simulation between the multibody system (MBS) of the robot and the workpiece (with calculation of cutting forces for the latter) is proposed, allowing for better integration of the coupled dynamics. The decision on where to partition the model is critical. Given that the workpiece transmits force elements while the robot transmits position data, a displacement-force coupling approach is proposed. Co-simulation offers several advantages, including the ability to use dedicated software tailored to different parts of the model and facilitating the interfacing of various robots with different machining models. However, the modularity offered by co-simulation techniques is counterbalanced by less accurate results with respect to those obtained with monolithic models. This research aims to evaluate the influence of the accuracy of the results on a simple model.</div></div>","PeriodicalId":20535,"journal":{"name":"Procedia CIRP","volume":"133 ","pages":"Pages 114-119"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143759557","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Estimation of Cutting Time in Polygonal Turning through Modeling of Tool Workpiece Interactions in Workpiece Coordinate System 通过工件坐标系中刀具与工件相互作用的建模估算多边形车削的切削时间

Procedia CIRP Pub Date : 2025-01-01 DOI: 10.1016/j.procir.2025.02.061

Madhur Pandya , Dhruv Narayan , Naresh Bhatnagar

{"title":"Estimation of Cutting Time in Polygonal Turning through Modeling of Tool Workpiece Interactions in Workpiece Coordinate System","authors":"Madhur Pandya , Dhruv Narayan , Naresh Bhatnagar","doi":"10.1016/j.procir.2025.02.061","DOIUrl":"10.1016/j.procir.2025.02.061","url":null,"abstract":"<div><div>This paper presents detailed investigations into the estimation of cutting time (CT), the percentage of cutting time to total time (%CT/TT), and the reduction in the workpiece cross-section area during the polygonal turning process using complex number representation of the tool tip in an absolute workpiece coordinate system The motive of this study is to bridge the gap between the algorithms for integer and fractional speed ratios reported in the literature and develop a single robust model with structured verification and validation. The model was verified by determining the exact number of sides and the profile geometry produced on the workpiece and comparing the model results with the existing literature. Cutting time was validated experimentally, using a high-speed camera in two scenarios: machining a tri-lobed geometry and a square geometry. The model successfully estimated geometric profiles, and for the specified machining parameters, the estimated number of sides aligned with the reported literature. The model underestimated the experimental value of cutting by 12.35% for a trilobed geometry and overestimated the experimental value by 5.66% for a square geometry.</div></div>","PeriodicalId":20535,"journal":{"name":"Procedia CIRP","volume":"133 ","pages":"Pages 352-357"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143759268","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Manufacturing and Defect Characterization of Rotationally Molded Hybrid Composite Drive Shafts

Procedia CIRP Pub Date : 2025-01-01 DOI: 10.1016/j.procir.2024.09.003

Patrick Schaible , Daniel Büchner , Sebastian Schabel , Jürgen Fleischer

{"title":"Manufacturing and Defect Characterization of Rotationally Molded Hybrid Composite Drive Shafts","authors":"Patrick Schaible , Daniel Büchner , Sebastian Schabel , Jürgen Fleischer","doi":"10.1016/j.procir.2024.09.003","DOIUrl":"10.1016/j.procir.2024.09.003","url":null,"abstract":"<div><div>One way of reducing greenhouse gas emissions is the consistent use of lightweight design. By reducing the moving mass, energy requirements can be lowered. Fibre-reinforced plastic composites are particularly suitable for lightweight components with very high mechanical requirements and a long service life. This article presents the production and investigation the influence of manufacturing process parameters on the defects of rotationally moulded parts using the example of a drive shaft. The hybrid components are manufactured using a rotational moulding process in which braided preforms and load introduction elements are processed in a single step. The elements are intimately bonded by a thermosetting matrix under the influence of temperature and centrifugal force. Different process parameters such as rotational speed, matrix temperature, mould temperature and mould unbalance are varied and the influence on the component properties are investigated. Furthermore, a catalogue of characteristics for the classification of manufacturing defects is created. It can be shown that different types of defects occur along the process chain and suitable measurements to minimize the defects are proposed.</div></div>","PeriodicalId":20535,"journal":{"name":"Procedia CIRP","volume":"131 ","pages":"Pages 1-6"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143509367","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Experimental study on drilling machinability of CFRP: Tool geometry, hole quality and process monitoring analysis

Procedia CIRP Pub Date : 2025-01-01 DOI: 10.1016/j.procir.2024.09.016

Iker Urresti Espilla , Martin Telleria , Iñigo Llanos , Luis Norberto López de Lacalle

{"title":"Experimental study on drilling machinability of CFRP: Tool geometry, hole quality and process monitoring analysis","authors":"Iker Urresti Espilla , Martin Telleria , Iñigo Llanos , Luis Norberto López de Lacalle","doi":"10.1016/j.procir.2024.09.016","DOIUrl":"10.1016/j.procir.2024.09.016","url":null,"abstract":"<div><div>Due to their lightweight and high strength properties, components made of CFRP play a fundamental role in the aerospace industry. Hole-making of these parts is usually required for the following assembly process, with the drilling process of composite parts being one of the most important and critical manufacturing process steps. However, due to the non-homogeneous anisotropic nature of the material and highly abrasive and hard reinforced fibers, CFRP is usually regarded as difficult-to-machine material. Several drilling-induced defects can arise such as delamination, fiber pull-out and uncut fibers, burrs or micro cracking, leading to the rejection of costly aerospace parts. A correct choice of cutting tools and conditions is essential in addition to process monitoring techniques for ensuring desired hole quality. In this context, the present work presents an experimental work where the benchmarking of two cutting tool geometries and cutting conditions are carried out to analyze their effect on the drilled holed quality. Additionally, a novel cutting force-based process monitoring analysis is presented for online hole damage identification, focusing on cutting tool entry and exit regimes. Based on the results of this study, optimum cutting geometries are identified, and the importance of the tool point geometry and tool wear are highlighted as the main aspects affecting the generation of push-out delamination defects. Within this context, the suitability of twist drills with higher point angles is observed, achieving high quality holes. Hence, the present work introduces a drilling process optimization methodology applicable to aerospace assembly industrial processes.</div></div>","PeriodicalId":20535,"journal":{"name":"Procedia CIRP","volume":"131 ","pages":"Pages 80-85"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143509258","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Advanced allowance planning of CFRP composites exploiting the pattern of chopped carbon fibre reinforcement clusters

Procedia CIRP Pub Date : 2025-01-01 DOI: 10.1016/j.procir.2024.09.021

Norbert Geier , Gergely Magyar

{"title":"Advanced allowance planning of CFRP composites exploiting the pattern of chopped carbon fibre reinforcement clusters","authors":"Norbert Geier , Gergely Magyar","doi":"10.1016/j.procir.2024.09.021","DOIUrl":"10.1016/j.procir.2024.09.021","url":null,"abstract":"<div><div>Conventional allowance planning of carbon fibre-reinforced polymer composite plates that must be mechanically machined is based on mainly the analysis of the precision of composite manufacturing technologies. This approach neglects the impact of randomly oriented and positioned chopped fibre reinforcement clusters leading to unpredictable fibre cutting angles and inconsistent quality during machining. To address this issue, we developed an innovative allowance planning method for polymer composites reinforced with chopped fibres. Our approach optimizes the size of the non-uniform allowance to minimize machining-induced burrs on the machined edges by detecting fibre reinforcement clusters on the composite surface through digital image processing and employing a convolution-based optimization of geometric feature patterns. Validation through drilling experiments demonstrated that our method improved the average burr factor by 50% compared to a conventional allowance planning technique. Although the proposed method is recommended to be improved to manage the effects of three-dimensional fibre clusters on burr occurrence, it encourages a novel direction in allowance planning of composites having non-defined directional reinforcements.</div></div>","PeriodicalId":20535,"journal":{"name":"Procedia CIRP","volume":"131 ","pages":"Pages 130-135"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143509264","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Static stiffness analysis of an electronically preloaded rack and pinion feed drive system

Procedia CIRP Pub Date : 2025-01-01 DOI: 10.1016/j.procir.2025.01.012

Oier Franco , Xavier Beudaert , Ibai Ulacia , Kaan Erkorkmaz , Jokin Munoa

引用次数: 0

Development of an engineering drawing detection and extraction algorithm for quality inspection using deep neural networks

Procedia CIRP Pub Date : 2025-01-01 DOI: 10.1016/j.procir.2025.01.023

Madania Mahira Agritania , Mohammad Mi’radj Isnaini

引用次数: 0

Study on the electron dynamics of MoS2 under ultraviolet femtosecond laser irradiation

Procedia CIRP Pub Date : 2025-01-01 DOI: 10.1016/j.procir.2025.01.006

Huimin Qi, Jinshi Wang

{"title":"Study on the electron dynamics of MoS2 under ultraviolet femtosecond laser irradiation","authors":"Huimin Qi, Jinshi Wang","doi":"10.1016/j.procir.2025.01.006","DOIUrl":"10.1016/j.procir.2025.01.006","url":null,"abstract":"<div><div>As a promising two-dimensional (2D) material, MoS<sub>2</sub> exhibits considerable potential for applications in miniaturized optoelectronic devices. Although extensive research has been conducted on laser processing techniques for patterning or thinning MoS<sub>2</sub>, studies on the interaction mechanisms between lasers and MoS<sub>2</sub> relatively limited. This paper employs first-principles methods based on time-dependent density functional theory (TDDFT) to systematically investigate the excited-state properties of MoS<sub>2</sub> under ultraviolet laser irradiation, which enhances our understanding of the interaction processes between femtosecond lasers and 2D materials. The study explores the impact of laser intensity on energy deposition, photoinduced current, and the distribution of electron-hole pairs. The results indicate that the modulus of the optical conductivity decreases rapidly with increasing laser intensity, highlighting a more pronounced saturation absorption effect in the current. Additionally, a phase transition was observed at a laser intensity of 5×10<sup>12</sup> W/cm<sup>2</sup>, providing new insights into laser-induced phase transitions. By analyzing the spatiotemporal distribution of charge carriers, the study elucidates the mechanisms of charge carrier transport. These simulation results establish a foundation for optimizing laser processing techniques for MoS<sub>2</sub>.</div></div>","PeriodicalId":20535,"journal":{"name":"Procedia CIRP","volume":"132 ","pages":"Pages 31-36"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143511031","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0