Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture最新文献_第4页

A feature and optimized RRT algorithm-based assembly path planning method of complex products 一种基于特征与优化RRT算法的复杂产品装配路径规划方法

3区工程技术

Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture Pub Date : 2023-11-03 DOI: 10.1177/09544054231203069

Shuai Tao, Duan-Yan Wang, Sheng-Wen Zhang

{"title":"A feature and optimized RRT algorithm-based assembly path planning method of complex products","authors":"Shuai Tao, Duan-Yan Wang, Sheng-Wen Zhang","doi":"10.1177/09544054231203069","DOIUrl":"https://doi.org/10.1177/09544054231203069","url":null,"abstract":"Currently, manufacturing enterprises lack strict regulations and plans for complex products. The actual assembly path mainly relies on technicians’ experience, leading to an unreasonable assembly path for each part at the workstation, an unreasonable transportation path across the workstation, and the problem of mutual interference between parts. To solve these problems, this paper studies the assembly path planning technology of complex products based on the basic geometric features and assembly sequence information. The complexity of assembly path planning is reduced by converting the assembly problem into a disassembly problem. The disassembly direction and distance of each part are determined based on the geometric feature type of each mating face, and the rapid disassembly of the assembly body is achieved. The Rapidly-exploring Random Trees (RRT) algorithm is optimized by target-tendency and double random tree strategy, and the optimal assembly path of each component is quickly generated by combining the path optimization method and interference checking method. Finally, the effectiveness of the proposed method and the superiority of the path planning algorithm are verified using the cylinder head of a Marine diesel engine (MDE) as a case study.","PeriodicalId":20663,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135873938","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Surface damage characteristics and identification based on acoustic emission in diamond point grinding carbon/carbon ceramic matrix composites 基于声发射的金刚石点磨碳/碳陶瓷基复合材料表面损伤特征及识别

3区工程技术

Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture Pub Date : 2023-11-03 DOI: 10.1177/09544054231209792

Maojun Li, Yajie Chen, Xiaoyang Jiang, Xujing Yang

{"title":"Surface damage characteristics and identification based on acoustic emission in diamond point grinding carbon/carbon ceramic matrix composites","authors":"Maojun Li, Yajie Chen, Xiaoyang Jiang, Xujing Yang","doi":"10.1177/09544054231209792","DOIUrl":"https://doi.org/10.1177/09544054231209792","url":null,"abstract":"This study mainly investigated the effect of machining parameters on acoustic emission (AE) characteristics in grinding three-dimensional carbon/carbon ceramic matrix composites with superabrasive diamond grinding points. Signal processing techniques including fast Fourier transform (FFT) and short-time Fourier transform (SWFT) were applied to evaluate frequency features of AE signals. The RMS values were used as an indicator to detect grinding energy releasing characteristics. Results indicated that grinding speed and grinding depth were the main influencing factors on RMS values, while feed speed presented limited effects. The maximum undeformed chip thickness h max and active grits number were two key factors affecting RMS variation of the AE signals, which corresponded to the intensity of single AE source and the number of total AE ones, respectively. The material removal mechanisms were studied via detailed SEM micrographs of machined surfaces, revealing that fiber fracture and debonding were the main material removal modes in point grinding carbon/carbon composites. The material removal mode can be possibly identified from the frequency of AE signal, as the band of 12–35 kHz mainly corresponded to fiber fracture, 35–70 kHz referred to debonding between the fiber and matrix, 70–90 kHz indicated the frictions, and the fourth band (90–120 kHz) was related to the matrix cracks.","PeriodicalId":20663,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture","volume":"29 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135819765","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Position-independent geometric error compensation of a non-orthogonal five-axis machine tool using a simplified algebraic algorithm 非正交五轴机床位置无关几何误差补偿的简化代数算法

3区工程技术

Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture Pub Date : 2023-11-03 DOI: 10.1177/09544054231205140

Shuang Ding, Xiao Zhang, Zhiwei Chen, Weiwei Wu

{"title":"Position-independent geometric error compensation of a non-orthogonal five-axis machine tool using a simplified algebraic algorithm","authors":"Shuang Ding, Xiao Zhang, Zhiwei Chen, Weiwei Wu","doi":"10.1177/09544054231205140","DOIUrl":"https://doi.org/10.1177/09544054231205140","url":null,"abstract":"Geometric errors are the key error sources that affect the machining quality of a five-axis machine tool. In the case of a non-orthogonal five-axis machine tool (NOFAMT), the modelling and compensation of geometric errors can be quite complex. This paper proposes a simplified modelling algorithm to derive the analytical expressions for the position-independent geometric error (PIGE) compensation of a NOFAMT without generating higher-order error terms. First, the geometric error modelling was conducted based on the homogeneous transformation matrix (HTM). Then, algebraic expressions for PIGE compensation were obtained according to the actual inverse kinematics and a simplified algorithm. By using the simplified algorithm, the efficiency of deriving algebraic expressions for geometric error compensation can be greatly enhanced. The PIGE compensation’s numerical control (NC) codes can be directly computed using these algebraic expressions. Finally, the effectiveness and efficiency of the new algorithm were verified by numerical analysis and virtual machining. The detailed results were compared with those obtained using the differential method, and both sets of results showed the same trend.","PeriodicalId":20663,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture","volume":"24 6","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135819931","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optimizing the contributing electro-erosive discharge parameters for reducing the electrode wear and geometric dimensional deviation in EDM of Ti-based superalloy 优化电蚀放电参数，降低钛基高温合金电火花加工中电极磨损和几何尺寸偏差

3区工程技术

Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture Pub Date : 2023-11-03 DOI: 10.1177/09544054231205333

Kashif Ishfaq, Muhammad Sana, M Saravana Kumar, Inzamam Ahmed, Che-Hua Yang

{"title":"Optimizing the contributing electro-erosive discharge parameters for reducing the electrode wear and geometric dimensional deviation in EDM of Ti-based superalloy","authors":"Kashif Ishfaq, Muhammad Sana, M Saravana Kumar, Inzamam Ahmed, Che-Hua Yang","doi":"10.1177/09544054231205333","DOIUrl":"https://doi.org/10.1177/09544054231205333","url":null,"abstract":"The low thermal conductivity, the small magnitude of modulus of elasticity, and the high chemical reactivity of Ti-6Al-4V make it difficult to machine this material using traditional processes. The intended requirements for the applications of the said alloy, like in biomedical and aerospace, further complicate its processing. Thereof, electric discharge machining (EDM) opted for this alloy. However, intrinsic issues of EDM, that is, electrode wear rate (EWR) and dimensional overcuts, restricted its utilization. Therefore, the potential of three powder-based additives and dielectric fluids against different electrode materials has been deeply envisaged to address the abovementioned issues. Because the choice of best dielectric has a direct bearing on heat input to the electrode which influences the melting/vaporization of the tool wear of the electrode. It is worth mentioning that these concerns have not been discussed so far in such a broad spectrum. Taguchi’s experimental design is used for experimentation. The results show that transformer oil performance is best rated compared to other dielectrics. Overall, the reduction in tool wear rate and overcut obtained with transformer oil is 21.3% and 21.4%, respectively, in contrast to the other dielectrics. The electrode of Cu outperforms for yielding the smaller value of overcut and tool wear rate. In the case of micro-additives, alumina has proved its potential for lowering the electrode wear rate. Deep and wide craters of a depth of 150 µm have been observed by using the brass electrode in kerosene oil, whereas the small and shallow craters of 38 µm depth have been encountered using the Cu electrode in the presence of transformer oil.","PeriodicalId":20663,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture","volume":"39 22","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135873404","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Single sensor three point on-line measurement method of precision rolling bearings 精密滚动轴承单传感器三点在线测量方法

3区工程技术

Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture Pub Date : 2023-11-03 DOI: 10.1177/09544054231202904

Lai Hu, Jun Zha, Peilong Song, Yaolong Chen

{"title":"Single sensor three point on-line measurement method of precision rolling bearings","authors":"Lai Hu, Jun Zha, Peilong Song, Yaolong Chen","doi":"10.1177/09544054231202904","DOIUrl":"https://doi.org/10.1177/09544054231202904","url":null,"abstract":"With the continuous development of machining methods, it is necessary to explore grinding and measuring methods to ensure the fatigue life and improved accuracy of bearings. In this study, a single-sensor three-point (SSTP) on-line outer-diameter measuring instrument was designed to ensure the consistency of the machining accuracy of precision bearing rings. Moreover, the mathematical model of the measuring instrument was established. The roundness and cylindricity error measurements of the ring outer diameter of precision bearings A and B form different manufacturers of countries were compared and analyzed. In addition, the accuracy measurement of the experimental grinder was investigated through multidimensional experiments. The results demonstrated a measuring and repetitive accuracy of ±1.25 and 1 μm, respectively. The measuring results conformed to the 3 б principle. The measured outer diameter was within the actual value of the workpiece outer diameter ±3 б, and the accuracy was over 99.73%. The instrument did only measure the outer diameter, but also measured the waviness error. The outer diameter and rotating speed did not clearly affect the measuring accuracy. The use of a lubricating fluid reduced the contact resistance of the on-line measuring instrument and significantly reduced the absolute error of outer diameter measurement, which is beneficial in improving the outer diameter measurement accuracy of the instrument.","PeriodicalId":20663,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture","volume":"36 6","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135819896","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Editorial: Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture ‘Special Issue: MATADOR 2021’ 编辑：机械工程师学会论文集》B 部分：《工程制造期刊》"特刊：马塔多 2021

IF 2.6 3区工程技术

Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture Pub Date : 2023-10-31 DOI: 10.1177/09544054231195408

P. Mativenga

引用次数: 0

Laser forming of aluminium foam sandwich into a shock-absorbing structural part 泡沫铝夹层激光成形减震结构件

3区工程技术

Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture Pub Date : 2023-10-30 DOI: 10.1177/09544054231205102

Anirban Changdar, Ankit Shrivastava, Shitanshu Shekhar Chakraborty, Samik Dutta

引用次数: 0

Bayesian optimization of 3D bioprinted polycaprolactone/magnesium oxide nanocomposite scaffold using a machine learning technique 基于机器学习技术的生物3D打印聚己内酯/氧化镁纳米复合材料支架的贝叶斯优化

3区工程技术

Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture Pub Date : 2023-10-25 DOI: 10.1177/09544054231202219

Ardeshir Hemasian Etefagh, Mohammad Reza Razfar

{"title":"Bayesian optimization of 3D bioprinted polycaprolactone/magnesium oxide nanocomposite scaffold using a machine learning technique","authors":"Ardeshir Hemasian Etefagh, Mohammad Reza Razfar","doi":"10.1177/09544054231202219","DOIUrl":"https://doi.org/10.1177/09544054231202219","url":null,"abstract":"3D bioprinting of polycaprolactone (PCL) is an additive manufacturing technique, fabricating 3D scaffolds with widespread applications in biomedical bone regeneration. PCL has favorable properties such as tunable mechanical, biological, cytocompatibility, and good printability. In addition, adding magnesium oxide (MgO) nanoparticles effectively enhance bioactivities and bone formation. However, several researchers are reported that PCL-MgO nanocomposite may face challenges in printability. Therefore, this study has focused on optimizing printing parameters to achieve enhanced mechanical and osteoconductivity properties, printability, and print resolution. A newly developed and cost-effective method, Bayesian optimization (BO), has been applied to achieve this objective. The developed model investigates and accelerates the optimization of printing parameters, including air pressure, printing speed, and nozzle temperature on printability and print resolution. Despite the wide search spaces of printing parameters, the BO model drastically reduces the number of experiments to 11 iterations in each target width. There is a good agreement between the model-predicted and actual values (91% in width). Besides, this model can be used to find optimum process parameters in printing gradient width filament to fabricate 3D gradient scaffolds.","PeriodicalId":20663,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture","volume":"97 5","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135112128","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Investigation of stochastic toolpath strategy in three-axis ball-end milling of 2D and free-form surfaces 二维及自由曲面三轴球头铣削随机刀路策略研究

3区工程技术

Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture Pub Date : 2023-10-21 DOI: 10.1177/09544054231202386

Nilesh Ashok Kharat, Ankit Agarwal, Tyler Grimm, Laine Mears

{"title":"Investigation of stochastic toolpath strategy in three-axis ball-end milling of 2D and free-form surfaces","authors":"Nilesh Ashok Kharat, Ankit Agarwal, Tyler Grimm, Laine Mears","doi":"10.1177/09544054231202386","DOIUrl":"https://doi.org/10.1177/09544054231202386","url":null,"abstract":"The machining of free-form components by ball-end milling inherently produces surface error in the form of scallops. The objective of any free-form toolpath strategy is to balance productivity while minimizing scallop height to reduce surface error. Conventional machining strategies produce repeatable material patterns (constant scallop height) that may limit workpiece function in areas such as lubricity, directional anisotropy, and aesthetic appearance. These strategies also involve steady-state cuts, which allow accumulation of temperature, restrict the permissible depth and speed. In the present paper a novel complex stochastic toolpath strategy has been proposed that comprises pseudo-random circular contours concatenated into a smooth path. The approach enables continuous variation of chip load, force, and direction, and avoids conditions of continuous, periodic high cutting loads and heat accumulation. Based on initial testing, it has been observed that stochastic toolpaths are longer than conventional toolpaths. However, a decrease in average cutting loads enable reduction in cutting time with feed optimization. Additionally, the proposed strategy resulted in lower scallop height than conventional machining, thereby improving surface condition.","PeriodicalId":20663,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture","volume":"28 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135513128","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Accurate prediction method for a microstructure profile based on the force–displacement coupled servo model 基于力-位移耦合伺服模型的微结构轮廓精确预测方法

3区工程技术

Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture Pub Date : 2023-10-21 DOI: 10.1177/09544054231202225

Siyuan Fu, Hong Yang, Zhong Jiang, Shouli Sun, Fang Duan

{"title":"Accurate prediction method for a microstructure profile based on the force–displacement coupled servo model","authors":"Siyuan Fu, Hong Yang, Zhong Jiang, Shouli Sun, Fang Duan","doi":"10.1177/09544054231202225","DOIUrl":"https://doi.org/10.1177/09544054231202225","url":null,"abstract":"Microstructures of specified shapes have been widely applied in electronics, communication, optics, avionics, medical science, and the automotive field. The ultraprecision single-point diamond turning lathe is a core instrument used in microstructure preparation. As a key technical indicator of an ultraprecision lathe, the servo control accuracy of a system directly affects the machining accuracy of the lathe. Because the profile error of microstructures machined by the slow tool servo of the ultraprecision lathe is at the micrometer level, any disturbance reduces the accuracy of parts machining. This paper proposes a tracking error prediction model based on the force–displacement coupled servo model to study the mechanism of action for the cutting force disturbance on a servo control system. The repeated positioning error of an ultraprecision lathe’s linear axis is added to the force–displacement coupled servo model to propose a more practical profile error prediction model and analyze the effect of the cutting force on the part profile. The experimental results indicate that the force–displacement coupled servo tracking error and profile error prediction model proposed in this paper is more accurate than the existing tracking error modeling method without cutting force disturbance. In addition, this paper analyzes how the cutting force in ultraprecision machining affects the servo system and part profile, which provides a reference for subsequent ultraprecision lathe error analysis and improved machining accuracy.","PeriodicalId":20663,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture","volume":"29 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135512713","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0