机械工程与技术 Pub Date : 2023-01-01 DOI: 10.12677/met.2023.125046

雨秋丁

引用次数: 0

Process Optimization and Tools Wear of Precision Milling of TA15 Titanium Alloy Based on PCD Tools 基于PCD刀具的TA15钛合金精密铣削工艺优化及刀具磨损

机械工程与技术 Pub Date : 2023-01-01 DOI: 10.12677/met.2023.125051

育银罗

{"title":"Process Optimization and Tools Wear of Precision Milling of TA15 Titanium Alloy Based on PCD Tools","authors":"育银罗","doi":"10.12677/met.2023.125051","DOIUrl":"https://doi.org/10.12677/met.2023.125051","url":null,"abstract":"Polycrystalline diamond (PCD) tools were used to carry out high-efficiency precision milling tests on TA15 titanium alloy, to comparatively study the influence of milling process parameters such as spindle speed, milling depth, milling width and feed per tooth on the surface quality of titanium alloy machining, and to carry out experimental studies on the wear of PCD tools according to the optimised process parameters. The results of titanium alloy milling experiments show that when the spindle speed N , milling depth a p , milling width a e , and feed per tooth f z are 12,000 r/min, 3 mm, 20 μm, and 0.02 mm/z, respectively, the PCD tool has the best cutting performance in side milling of TA15 titanium alloy, and the roughness of the milled surface of titanium alloy is up to 0.055 μm. The results of the wear experiments show that the wear trend of PCD tool is in line with the theoretical wear curve. The wear trend coincides with the theoretical wear curve, through the initial wear, stable wear, intense wear of three states, the amount of tool wear and milling surface roughness with the accumulation of the milling length and growth, when the milling length of 210 m, the maximum width of the rear face of the local maximum wear width of 259.9 μm, and at the same time, the surface roughness of the titanium alloy up to 0.312 μm, the surface of the small amount of adhesion to the surface of the titanium alloy, but the tool can still ensure a certain degree of cutting performance after 218 min of milling. However, the cutting performance of the tool can still be guaranteed after 218 min, which can effectively realize the efficient and precise milling of TA15 titanium alloy for a long time.","PeriodicalId":68607,"journal":{"name":"机械工程与技术","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135107726","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

Dynamic and Static Error Identification and Separation Method for Three-Axis CNC Machine Tools Based on Feature Workpiece 基于特征工件的三轴数控机床动静态误差辨识与分离方法

机械工程与技术 Pub Date : 2023-01-01 DOI: 10.12677/met.2023.125048

昊吴

引用次数: 0

Strength Analysis and Experimental Study on the New Rail Re-Railer of 100% Low-Floor Tram 100%低地板有轨电车新型重轨车强度分析与试验研究

机械工程与技术 Pub Date : 2023-01-01 DOI: 10.12677/met.2023.125047

国希严

引用次数: 0

Research on Wind Load Characteristics of Photovoltaic Structures and Optimization of Maximum Power Tracking 光伏结构风荷载特性及最大功率跟踪优化研究

机械工程与技术 Pub Date : 2023-01-01 DOI: 10.12677/met.2023.125049

江涛许

{"title":"Research on Wind Load Characteristics of Photovoltaic Structures and Optimization of Maximum Power Tracking","authors":"江涛许","doi":"10.12677/met.2023.125049","DOIUrl":"https://doi.org/10.12677/met.2023.125049","url":null,"abstract":"To increase the development and utilization of solar energy and reduce carbon emissions, the energy sector is the effective path to realize “carbon neutral”. However, solar energy faces practical problems such as low solar energy utilization rate and extreme weather damage. Therefore, to improve the utilization rate of solar energy, based on the principle of dual-axis sun tracking, an intelligent sun tracking system for photovoltaic power generation with wind resistance is proposed. In this paper, based on the fluid-structure coupling theory, the stress analysis of the key parts was carried out, and an optimization model was constructed that took into account both energy generation and wind damage resistance. By adjusting the attitude parameters of the panels, a compromise was reached between the unloading of wind load and the maximization of energy generation, which reduced the damage of wind on the panels and effectively extended the life of the mechanism. Results show that contrast, relevant solutions by developing view, attitude adjustment device, the surface of the initial Angle of 45˚ placed reasonably, and the best inclination angle for tracking changes is concentrated between 0˚ and 20˚ when the initial position is placed. The designed intelligent sun-tracking system achieves the purpose of maximum power generation, this research conclusion for the miniaturization, and automation development of photo-voltaic structure provides a train of thought and a theoretical basis for photovoltaic power maximization.","PeriodicalId":68607,"journal":{"name":"机械工程与技术","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136202330","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

Analysis and Experiment of Bending Deformation of Multi-Cavity Flexible Mechanical Finger 多腔柔性机械手指弯曲变形分析与实验

机械工程与技术 Pub Date : 2023-01-01 DOI: 10.12677/met.2023.125050

子强张

引用次数: 0

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