International Journal of Precision Engineering and Manufacturing最新文献

The Impact of Contralateral Cane Placement on the External Knee Adduction Moment 对侧手杖位置对膝关节外展力矩的影响

IF 1.9 4区工程技术

International Journal of Precision Engineering and Manufacturing Pub Date : 2024-09-18 DOI: 10.1007/s12541-024-01120-6

Sean-Min Lee, Hyeon-Soo Shin, Min-Jae Kim, Ju-Hee Kim, Na-Yeon Kim, Gwang-Moon Eom

引用次数: 0

Piecewise Modification of Cycloidal Gear in RV Reducer: Application of Spline Interpolation Theory and Comparison with a Combination Modification Optimization Method RV 减速器中摆线齿轮的分段修正：花键插值理论的应用及与组合修正优化方法的比较

IF 1.9 4区工程技术

International Journal of Precision Engineering and Manufacturing Pub Date : 2024-09-17 DOI: 10.1007/s12541-024-01107-3

Song Gao, Yueming Zhang, Yiwan Li, Shuting Ji, Tengyue Wei, Zhanli Wang

{"title":"Piecewise Modification of Cycloidal Gear in RV Reducer: Application of Spline Interpolation Theory and Comparison with a Combination Modification Optimization Method","authors":"Song Gao, Yueming Zhang, Yiwan Li, Shuting Ji, Tengyue Wei, Zhanli Wang","doi":"10.1007/s12541-024-01107-3","DOIUrl":"https://doi.org/10.1007/s12541-024-01107-3","url":null,"abstract":"Rotate vector (RV) reducers are typical deceleration elements with the outstanding characteristics of small size, compacted structure, strong load-bearing capacity, and low transmission error, which are widely applied in the fields of industrial robots, aerospace, and measurement instruments. The cycloidal gear, as the core component in the second-stage drive of RV reducer, its tooth profile directly determines the general performance of RV reducer such as meshing precision, load-bearing capacity, and riding stability. Therefore, it is necessary to explore the feasible methods and parameters for modification of cycloidal tooth profile. In this paper, taking the CRV-20E reducer as an object, firstly, a mathematical model for analyzing contact stress and load distribution on meshing surface was established. Secondly, based on genetic algorithm, a multi-objective optimization for cycloidal profile was applied with maximum contact stress and load distribution coefficient as objective functions, the optimal combination of modification parameters was obtained. Then, with the idea of piecewise modification and spline interpolation method, the cycloidal profile was separated into three segments of dedendum, working, and addendum, which ensures conjugated meshing in working segment, and the reserved gaps in dedendum and addendum can also be remained flexibility according to the specific requirements. The mechanism performance with cycloidal profiles modified by two proposed methods were systematically compared and discussed. Finally, the finite element simulation verification was carried out. The results indicated that both modification methods have specific advantages. This study provides a theoretical reference for designers in the field of gear profile optimization and underscores the critical implications for improving the overall efficiency and reliability of RV reducers in applications.","PeriodicalId":14359,"journal":{"name":"International Journal of Precision Engineering and Manufacturing","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142260534","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Equivalent Error Based Modelling for Prediction and Analysis of Measuring Accuracy in 3-Axis FXYZ Coordinate Measuring Machines from Position, Repeatability and Reversibility Errors 基于等效误差建模，从位置、重复性和可逆性误差预测和分析 3 轴 FXYZ 坐标测量机的测量精度

IF 1.9 4区工程技术

International Journal of Precision Engineering and Manufacturing Pub Date : 2024-09-16 DOI: 10.1007/s12541-024-01090-9

J. Jodar, P. Franco

{"title":"Equivalent Error Based Modelling for Prediction and Analysis of Measuring Accuracy in 3-Axis FXYZ Coordinate Measuring Machines from Position, Repeatability and Reversibility Errors","authors":"J. Jodar, P. Franco","doi":"10.1007/s12541-024-01090-9","DOIUrl":"https://doi.org/10.1007/s12541-024-01090-9","url":null,"abstract":"The measuring accuracy of coordinate measuring machines (CMMs) will be affected by the different geometrical and dynamic errors, including the deviations associated to the axis displacement, the working table and the part to be measured. This work is focused on the analysis of the influence of the position errors, repeatability errors and reversibility errors in 3-axis FXYZ coordinate measuring machines, and it will be developed by a numerical model that is known as EE-based stochastic model. This model implements a new error index that is named equivalent error (EE), which will integrate the totality of machine errors of the CMMs and will allow a global description of all these error sources by means of a unique error parameter. The results obtained by this numerical model have been compared with the application of a traditional method, and it was probed that the EE-based model makes possible an increase of a 13.29% in the linear modelling of the performance of CMMs from the machine errors considered in this work, which implies a relevant improvement for the analysis and description of the effect of the distinct error sources on the achievable measuring accuracy of CMMs. For this reason, the EE-based model will be of special interest for industrial applications such as the quality control to be applied inside the production systems dedicated to manufacture mechanical components of high dimensional accuracy.","PeriodicalId":14359,"journal":{"name":"International Journal of Precision Engineering and Manufacturing","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142260535","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Experimental Study on Superplastic Forming for Inconel 718 Alloy Bipolar Plate 铬镍铁合金 718 双极板超塑性成形实验研究

IF 1.9 4区工程技术

International Journal of Precision Engineering and Manufacturing Pub Date : 2024-09-13 DOI: 10.1007/s12541-024-01119-z

Bingxing Wang, Xu Yang, Wenxiang Zhu, Zhuocheng Li, Bin Wang, Yong Tian

{"title":"Experimental Study on Superplastic Forming for Inconel 718 Alloy Bipolar Plate","authors":"Bingxing Wang, Xu Yang, Wenxiang Zhu, Zhuocheng Li, Bin Wang, Yong Tian","doi":"10.1007/s12541-024-01119-z","DOIUrl":"https://doi.org/10.1007/s12541-024-01119-z","url":null,"abstract":"With the development of the clean energy industry, higher requirements are put forward for the forming mode and service performance of bipolar plates, a key component of hydrogen fuel cells. The nickel-based alloy with corrosion and high-temperature resistance, as the potential material for bipolar plate, has the problem of insufficient plasticity. This paper proposes the superplastic forming method as a new attempt to prepare the Inconel 718 bipolar plate. The sheet with fine crystal structure exhibits excellent superplasticity at high temperatures and slow compression rate, thus forming bipolar plates with deep flow channels (~ 0.6 mm) and flat surfaces. The microscopic observation of the channel section shows that the straight channel at the edge is more filled due to the easier feeding of the material. Moreover, the corner channel exhibits more obvious local thinning and stress concentration than the straight channel, especially at the rounded corner of the inner turning. Increasing the billet thickness or adjusting the compression rate can improve the thickness distribution and filling effect for the product to a certain extent. Thicker sheets exhibit a lower proportion of high-stress regions during superplastic forming. Moreover, the moderate compression rate of 2 × 10–3 mm s−1 suppresses dislocation proliferation while avoiding grain growth in local areas, which improves the superplastic flow of the alloy and the quality of the final product.","PeriodicalId":14359,"journal":{"name":"International Journal of Precision Engineering and Manufacturing","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"2024-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142260536","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

A Comprehensive Evaluation Method for Generalized Reliability of CNC Machine Tools Based on Improved Entropy-Weighted Extensible Matter-Element Method 基于改进的熵加权可扩展物质元素法的数控机床通用可靠性综合评价方法

IF 1.9 4区工程技术

International Journal of Precision Engineering and Manufacturing Pub Date : 2024-09-12 DOI: 10.1007/s12541-024-01126-0

Chuanhai Chen, Guanyu Li, Zhifeng Liu, Jinyan Guo, Tongtong Jin, Jianhua Jiao, Hui Jiang

{"title":"A Comprehensive Evaluation Method for Generalized Reliability of CNC Machine Tools Based on Improved Entropy-Weighted Extensible Matter-Element Method","authors":"Chuanhai Chen, Guanyu Li, Zhifeng Liu, Jinyan Guo, Tongtong Jin, Jianhua Jiao, Hui Jiang","doi":"10.1007/s12541-024-01126-0","DOIUrl":"https://doi.org/10.1007/s12541-024-01126-0","url":null,"abstract":"Computerized numerical control (CNC) machine tools are typically repairable products. Reliability indicators should be combined with maintenance and availability indicators to fully reflect the level of operational reliability of the machine tools. At present, most of the methods for the comprehensive evaluation of the generalized reliability of CNC machine tools are based on a specific indicators system, the model has a strong subjectivity and can not be changed in a timely manner when the indicators change. This paper proposes a generalized reliability evaluation method for CNC machine tools based on improved entropy weight extensible matter-element model. Introducing contrast intensity and conflict intensity to consider the interrelationships between indicators to improve the entropy weighting method. Meanwhile, the grading method of the extensible matter-element model is improved to replace the scoring grading with the adaptive grading of the indicator data. This makes the methodology not only more objective and independent of the type of indicators, but also able to make timely and accurate changes when the indicators change. The method of this paper is applied to a five-axis CNC machine to conduct a generalized comprehensive reliability evaluation and compared with the traditional method. The results show that this method is more integrated and practical.","PeriodicalId":14359,"journal":{"name":"International Journal of Precision Engineering and Manufacturing","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142225050","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Influence of Hot Isostatic Pressing on Different Crack Modes of Laser Powder Bed Fusion-Processed CM247LC: Alternative Process Parameters Considering Post-processing 热等静压对激光粉末床熔融加工 CM247LC 不同裂纹模式的影响：考虑后处理的替代工艺参数

IF 1.9 4区工程技术

International Journal of Precision Engineering and Manufacturing Pub Date : 2024-09-11 DOI: 10.1007/s12541-024-01124-2

Jageon Koo, Joo Eon Kim, Ulanbek Auyeskhan, Seongwon Park, Im Doo Jung, Namhun Kim

{"title":"Influence of Hot Isostatic Pressing on Different Crack Modes of Laser Powder Bed Fusion-Processed CM247LC: Alternative Process Parameters Considering Post-processing","authors":"Jageon Koo, Joo Eon Kim, Ulanbek Auyeskhan, Seongwon Park, Im Doo Jung, Namhun Kim","doi":"10.1007/s12541-024-01124-2","DOIUrl":"https://doi.org/10.1007/s12541-024-01124-2","url":null,"abstract":"Nickel-based superalloys, including CM247LC, fabricated using laser powder bed fusion (LPBF) are prone to cracking. These induced cracks significantly reduce a manufacturability of the LPBF fabricated components; therefore, selecting appropriate process parameters is critical. Standard sample-scale LPBF parameters often lead to cracking in large-scale applications due to thermal energy accumulation and low thermal conductivity. Thus, it is important to explore industrial-scale parameters and post-processing methods, such as hot isostatic pressing (HIP), to mitigate cracking. However, the effectiveness of HIP can be reduced in samples fabricated under high volumetric energy density (VED) conditions. This study examines the impact of HIP on CM247LC samples fabricated under various VED conditions (43.65–159.72 J/mm3). Two distinct crack modes were identified, namely, solidification and liquation cracks at high and low VED conditions, respectively. A comparison of the pre- and post-HIP crack densities revealed that the crack healing effect of HIP under low and high VED conditions was approximately 90 and 47%, respectively. The mechanisms behind the healing of closed cracks, mostly liquation cracks, were analyzed. This study provides novel insight for selecting LPBF process parameters in the low VED range to mitigate cracks, with a quantitative analysis of HIP treatment for healing two types of cracks. These findings are crucial for practical applications in engineering fields such as the energy, aerospace, and automotive industries.","PeriodicalId":14359,"journal":{"name":"International Journal of Precision Engineering and Manufacturing","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142195151","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Evaluation of Mixed-Mode Stress Intensity Factors Using a Small Punch Specimen with a Circular Crack: Preliminary Experiment and an Estimation of Stress Intensity Factors 使用带有圆形裂纹的小冲压试样评估混合模式应力强度因子：初步实验和应力强度因子估算

IF 1.9 4区工程技术

International Journal of Precision Engineering and Manufacturing Pub Date : 2024-09-10 DOI: 10.1007/s12541-024-01113-5

Un Bong Baek, Kyung-Oh Bae, Tuan Anh Bui, Thanh Tuan Nguyen

{"title":"Evaluation of Mixed-Mode Stress Intensity Factors Using a Small Punch Specimen with a Circular Crack: Preliminary Experiment and an Estimation of Stress Intensity Factors","authors":"Un Bong Baek, Kyung-Oh Bae, Tuan Anh Bui, Thanh Tuan Nguyen","doi":"10.1007/s12541-024-01113-5","DOIUrl":"https://doi.org/10.1007/s12541-024-01113-5","url":null,"abstract":"Cracks often develop under complex loading conditions in practical applications, frequently leading to mixed-mode fracture scenarios. Therefore, accurately predicting fracture conditions, specifically the mixed-mode stress intensity factor (SIF) values and their influences, is crucial for assessing structural integrity. Based on preliminary empirical findings from a literature review of the fracture responses of various materials during small punch (SP) tests under different environmental conditions, we propose a model featuring a circular crack positioned on the bottom surface of the SP specimen to evaluate the I/II mixed-mode SIF. Preliminary results from experimental tests using the proposed model demonstrate its feasibility for replicating fracture behavior and determining mixed-mode SIF values. An analytical estimation of the SIF equation for mode-I and mode-II loading will be conducted using elastic finite element analysis. The effects of crack geometry parameters, including the crack ratio (a/t) and the radius of the circular crack, on the mixed-mode fracture parameter were investigated.<h3 data-test=\"abstract-sub-heading\">Graphical Abstract</h3>\u0000","PeriodicalId":14359,"journal":{"name":"International Journal of Precision Engineering and Manufacturing","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142195119","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

A Quadratic Differential Feedback Method for Electrochemical Micro Machining 用于电化学微加工的二次微分反馈法

IF 1.9 4区工程技术

International Journal of Precision Engineering and Manufacturing Pub Date : 2024-09-03 DOI: 10.1007/s12541-024-01121-5

Lizhong Xu, Jipeng Wang

引用次数: 0

Enhancing CNC Turning Efficiency of Aluminium 7071 Alloy Using Taguchi Method and L27 Array 使用田口方法和 L27 阵列提高铝 7071 合金的数控车削效率

IF 1.9 4区工程技术

International Journal of Precision Engineering and Manufacturing Pub Date : 2024-09-03 DOI: 10.1007/s12541-024-01095-4

D. Sudarsan, A. Bovas Herbert Bejaxhin, S. Rajkumar

{"title":"Enhancing CNC Turning Efficiency of Aluminium 7071 Alloy Using Taguchi Method and L27 Array","authors":"D. Sudarsan, A. Bovas Herbert Bejaxhin, S. Rajkumar","doi":"10.1007/s12541-024-01095-4","DOIUrl":"https://doi.org/10.1007/s12541-024-01095-4","url":null,"abstract":"The arrival of Industry 4.0 has caused manufacturers to search for ways to achieve efficiency and production. This study aims to optimize the manufacturing process parameters in the CNC machining of an aluminium alloy, Aluminium Alloy 7071, with the L27 orthogonal array designed by Taguchi and the response surface design. The factors that directly affect the rate of material removal, surface roughness, and cutting force are the following: spindle speed (1000, 1400, and 1800 rpm), traverse feed (0.20, 0.25, and 0.30) mm/rev), and cutting depth (.5, 1.0, and 1.5 mm). To accomplish this experiment, 27 samples were fabricated using the array model of Al7071 alloy. A wide range of touch sensors (directly tactile and indirectly measured) are employed to study the associated responses. The L27 array of the Taguchi method is used to enhance the optimization process by providing such improvements as minimized surface roughness, the maximum removal rate of material, and reduced cutting force. The response surface contour plots exhibiting reactions for different parameter sets mirrored by significant effects diagrams demonstrating signal-to-noise ratios are used to analyze the outcomes. This result is a key that tells how process factors cope with each other to get the output. Finally, the research done here is used to optimize the machining operations by obtaining the most influential turning of Aluminium Alloy 7071. As one of the principle goals of the Industry 4.0 concept, the methods applied demonstrate a capacity to increase the efficiency, quality, and productivity of modern manufacturing.","PeriodicalId":14359,"journal":{"name":"International Journal of Precision Engineering and Manufacturing","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142195150","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

A Review of the Machining of the Film Cooling Holes with Thermal Barrier Coatings Through Non-traditional Machining Methods 通过非传统加工方法加工带有热障涂层的薄膜冷却孔综述

IF 1.9 4区工程技术

International Journal of Precision Engineering and Manufacturing Pub Date : 2024-08-30 DOI: 10.1007/s12541-024-01094-5

Ajian Zhang, Xiaokang Chen, Qianlong Zhu, Ning Ma, Yulong Chen, Hai Liu

{"title":"A Review of the Machining of the Film Cooling Holes with Thermal Barrier Coatings Through Non-traditional Machining Methods","authors":"Ajian Zhang, Xiaokang Chen, Qianlong Zhu, Ning Ma, Yulong Chen, Hai Liu","doi":"10.1007/s12541-024-01094-5","DOIUrl":"https://doi.org/10.1007/s12541-024-01094-5","url":null,"abstract":"As the aviation industry continues to expand, increasing demands are being placed on aviation engines to withstand extreme temperatures, making it essential to effectively disperse heat from turbine blades. Studies have shown that film cooling holes coated with thermal barrier materials can endure high temperatures and significantly increase engine operating temperatures, thereby enabling higher thrust-to-weight ratios. But, the structure of this insulating ceramic layer adhered to the metal surface presents a significant processing challenge. Consequently, a focal point of manufacturing research now centers on developing effective and high-quality methods for processing film cooling holes with thermal barrier coatings. Accordingly, this paper compares the advantages and disadvantages of various specialized machining techniques and reviews the research progress in processing film cooling holes with thermal barrier coatings, considering both single and composite techniques. Finally, it provides an overview of the future directions for film cooling hole machining methods with thermal barrier coatings. This advancement is crucial for enhancing the standards of aero engine manufacturing.<h3 data-test=\"abstract-sub-heading\">Graphical Abstract</h3>","PeriodicalId":14359,"journal":{"name":"International Journal of Precision Engineering and Manufacturing","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"2024-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142195152","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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