Proceedings of the 2019 International Conference on Precision Machining, Non-Traditional Machining and Intelligent Manufacturing (PNTIM 2019)最新文献

Study on Starting Characteristic of Synchronized Dual Frequency Gear Quenching Power Supply 同步双频淬火电源起动特性研究

Proceedings of the 2019 International Conference on Precision Machining, Non-Traditional Machining and Intelligent Manufacturing (PNTIM 2019) Pub Date : 2019-11-01 DOI: 10.2991/pntim-19.2019.33

Sun Yichao, Shang Yaceng, Lai Hao, Liu Changke

{"title":"Study on Starting Characteristic of Synchronized Dual Frequency Gear Quenching Power Supply","authors":"Sun Yichao, Shang Yaceng, Lai Hao, Liu Changke","doi":"10.2991/pntim-19.2019.33","DOIUrl":"https://doi.org/10.2991/pntim-19.2019.33","url":null,"abstract":"Synchronized dual-frequency induction hardening machine tool is widely used in gear surface heat treatment because of its characters such as saving energy, no pollution in environment, high processing efficiency, small deformation of workpiece and so on. In view of the poor load adaptability of the dual frequency induction heating power supply; the high frequency and intermediate frequency connected to the same transformer, the crosstalk current will bring interference to the stable start of the power supply and so on, the high frequency and intermediate frequency in the synchronous dual frequency topology are modeled and simulated respectively. Based on the resonance points of medium and high frequency circuits, the phase difference angle of the inverting side current is studied at different frequencies, and the effect of crosstalk current is analyzed and verified by experiments. The results show that setting the start-up parameters near the resonance point and setting the phase difference angle threshold can ensure the efficient and stable start-up of dual-frequency power supply. Keywords-Synchronous Dual Frequency; Model Reconstruction; Phase Difference Angle; Crosstalk Current","PeriodicalId":344913,"journal":{"name":"Proceedings of the 2019 International Conference on Precision Machining, Non-Traditional Machining and Intelligent Manufacturing (PNTIM 2019)","volume":"20 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121800008","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

A Design of Camera Adjustment Mechanism Based on Automatic Visual NC tool Detector 基于自动视觉数控刀具检测器的摄像机调整机构设计

Proceedings of the 2019 International Conference on Precision Machining, Non-Traditional Machining and Intelligent Manufacturing (PNTIM 2019) Pub Date : 2019-11-01 DOI: 10.2991/pntim-19.2019.24

Su-fen Yu, Zhang Leimeng, Tang Bo, Qu Wang

引用次数: 0

Analysis of the Load Sharing of the Flexible Ring Gear Planetary Gear Train 柔性环齿行星轮系的载荷分担分析

Proceedings of the 2019 International Conference on Precision Machining, Non-Traditional Machining and Intelligent Manufacturing (PNTIM 2019) Pub Date : 2019-11-01 DOI: 10.2991/pntim-19.2019.52

Zhao Yang, Shen Yunbo, Shang Hanhan, L. Weiwei

{"title":"Analysis of the Load Sharing of the Flexible Ring Gear Planetary Gear Train","authors":"Zhao Yang, Shen Yunbo, Shang Hanhan, L. Weiwei","doi":"10.2991/pntim-19.2019.52","DOIUrl":"https://doi.org/10.2991/pntim-19.2019.52","url":null,"abstract":"The lumped mass model-finite element hybrid model with flexible ring gear is proposed. The dynamic model of planetary transmission system with flexible ring gear structure is established. The calculation of internal meshing time variation between flexible ring gear and planetary gear is proposed. The method of meshing stiffness. According to Newton's second law, the planetary gear train dynamics load model considering time-varying meshing stiffness, damping, comprehensive meshing error and thin-walled sleeve inner ring gear is derived. The planetary gear train with flexible ring gear structure is established. The dynamic equations are solved by numerical methods. The dynamic load-carrying characteristics of the planetary gear trains with different inner sleeves and inner ring gears with different sleeve thicknesses are analyzed. The results show that the inner ring gear sleeve wall The thinner the thickness, the greater the flexibility of the inner ring gear, the smaller the meshing stiffness during internal meshing, the better the load sharing performance of the system, and the internal meshing load factor is more affected. Keywords-Planetary Train; Flexible Ring Gear; Loaded","PeriodicalId":344913,"journal":{"name":"Proceedings of the 2019 International Conference on Precision Machining, Non-Traditional Machining and Intelligent Manufacturing (PNTIM 2019)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114888624","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

Blink Fatigue Detection Algorithm Based on Improved Lenet-5 基于改进Lenet-5的眨眼疲劳检测算法

Proceedings of the 2019 International Conference on Precision Machining, Non-Traditional Machining and Intelligent Manufacturing (PNTIM 2019) Pub Date : 2019-11-01 DOI: 10.2991/pntim-19.2019.67

Lei Chao, Wang Changyuan, Lin Zhi, Huang Wenbo

{"title":"Blink Fatigue Detection Algorithm Based on Improved Lenet-5","authors":"Lei Chao, Wang Changyuan, Lin Zhi, Huang Wenbo","doi":"10.2991/pntim-19.2019.67","DOIUrl":"https://doi.org/10.2991/pntim-19.2019.67","url":null,"abstract":"Fatigue driving is the main factor in many traffic accidents. The eye behavior is the main direction in the field of fatigue driving research. It reflects the degree of fatigue of the human brain to some extent. In this paper, the publicized CEW human eye opening and closing data set is used to preprocess the human eye image, and then the preprocessed image is placed in the improved LeNet-5 convolutional neural network. In order to fully extract the human eye features, the network is added. The number of layers, at the same time, to speed up the network convergence speed in order to prevent the gradient from disappearing, the activation function is changed from Tanh to ReLU function. Experiments show that the algorithm has a blink recognition rate of 93.5% in the public CEW dataset, and an accuracy rate of 5.1% compared with the unmodified LeNet-5. This method has a good blink detection effect and has important application value in the field of fatigue driving. Keywords-Fatigue Driving; Blinking Algorithm; Convolutional Neural Network; Network Optimization","PeriodicalId":344913,"journal":{"name":"Proceedings of the 2019 International Conference on Precision Machining, Non-Traditional Machining and Intelligent Manufacturing (PNTIM 2019)","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116090453","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: 1

Research on Assembly Line Optimization Based on Machine Learning 基于机器学习的装配线优化研究

Proceedings of the 2019 International Conference on Precision Machining, Non-Traditional Machining and Intelligent Manufacturing (PNTIM 2019) Pub Date : 2019-11-01 DOI: 10.2991/pntim-19.2019.37

Z. Peng, Fan Yadong, Liang Xiaowei, Chen Jingwen

引用次数: 0

Designing and Optimization of Gear Synchronous Dual-Frequency Induction Heating Power Supply Based on ANSYS 基于ANSYS的齿轮同步双频感应加热电源设计与优化

Proceedings of the 2019 International Conference on Precision Machining, Non-Traditional Machining and Intelligent Manufacturing (PNTIM 2019) Pub Date : 2019-11-01 DOI: 10.2991/pntim-19.2019.44

L. Yang, Shang Yaceng, Lai Hao, Sun Yichao

引用次数: 0

Topological Optimization of Random Distributed Points 随机分布点的拓扑优化

Proceedings of the 2019 International Conference on Precision Machining, Non-Traditional Machining and Intelligent Manufacturing (PNTIM 2019) Pub Date : 2019-11-01 DOI: 10.2991/pntim-19.2019.62

Dongqun Xin, L. HongJun, Yao Lei-jiang, Ding You

引用次数: 0

Continuous Feed Roller Grinder Design and Its Finite Element Analysis Based on Solid Works 基于实体工程的连续给料辊磨床设计及有限元分析

Proceedings of the 2019 International Conference on Precision Machining, Non-Traditional Machining and Intelligent Manufacturing (PNTIM 2019) Pub Date : 2019-11-01 DOI: 10.2991/pntim-19.2019.5

Wang Hongqiang, Liu Zhihao, Han Quanli, Sun Zhengyang

{"title":"Continuous Feed Roller Grinder Design and Its Finite Element Analysis Based on Solid Works","authors":"Wang Hongqiang, Liu Zhihao, Han Quanli, Sun Zhengyang","doi":"10.2991/pntim-19.2019.5","DOIUrl":"https://doi.org/10.2991/pntim-19.2019.5","url":null,"abstract":"After the workpiece is processed, the barrel mill is widely used as a burr removal device. Therefore, in order to improve the efficiency of burr removal and enhance the polishing effect on the surface of the workpiece, the conventional roller grinder is improved in design, and the continuous batch grinding method is used instead of the conventional batch grinding method, and the automatic workpiece transfer device is added after the end of the grinding. , thereby increasing the grinding efficiency. Using SolidWorks software, three-dimensional solid modeling and virtual prototype assembly were carried out on the feeding device, grinding device and conveying device. The static analysis of the roller bracket was carried out by ANSYS Workbench software, and the rationality of the design was verified. The results show that the burr removal rate is increased by 10%~20% compared with the traditional grinding machine, and the surface roughness is improved by 1~2, which improves the production efficiency to a certain extent. Keywords-Roller Mill; Burr Removal; Surface Polishing; 3D Solid Modeling; ANSYS Workbench","PeriodicalId":344913,"journal":{"name":"Proceedings of the 2019 International Conference on Precision Machining, Non-Traditional Machining and Intelligent Manufacturing (PNTIM 2019)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128234871","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

Research on Porous Ceramic 3D Printing Process Based on Laminated Template Method 基于层压模板法的多孔陶瓷3D打印工艺研究

Proceedings of the 2019 International Conference on Precision Machining, Non-Traditional Machining and Intelligent Manufacturing (PNTIM 2019) Pub Date : 2019-11-01 DOI: 10.2991/pntim-19.2019.48

Chen Shihao, Chengxu Hua, Zhang Geng, Zhang Qishuai

{"title":"Research on Porous Ceramic 3D Printing Process Based on Laminated Template Method","authors":"Chen Shihao, Chengxu Hua, Zhang Geng, Zhang Qishuai","doi":"10.2991/pntim-19.2019.48","DOIUrl":"https://doi.org/10.2991/pntim-19.2019.48","url":null,"abstract":"This paper proposes a new 3D printing lamination process to prepare porous ceramics with tight bonding between layers. The ceramic slurry is prepared by mixing alumina powder, organic binder and deionized water, nylon mesh cloth is used as organic template, scraper is used to scrape the ceramic slurry into the organic template, and the organic template layer is dried and laser scanned to obtain a single The green layer is obtained by laminating the layers and then sintering the ceramic body to obtain a porous ceramic. The results show that the compressive strength of porous ceramics prepared by this method can reach 43.12Mpa, the tensile strength between layers can reach 2.2Mpa, the diameter of ceramic through-hole is 70μm. The pore size and pore spacing of the ceramic green body processed by the process can be controlled, and the adhesion of adjacent layers of the ceramic body is improved, thereby improving the compressive strength of the ceramic material. Keywords-Laminate Manufacturing; Organic Template; Porous Ceramic; Material Properties","PeriodicalId":344913,"journal":{"name":"Proceedings of the 2019 International Conference on Precision Machining, Non-Traditional Machining and Intelligent Manufacturing (PNTIM 2019)","volume":"23 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125689022","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

Research on Knowledge Management of Aviation Manufacturing Industry Based on Association Rules 基于关联规则的航空制造业知识管理研究

Proceedings of the 2019 International Conference on Precision Machining, Non-Traditional Machining and Intelligent Manufacturing (PNTIM 2019) Pub Date : 2019-11-01 DOI: 10.2991/pntim-19.2019.18

A. Xin, Duyi Jiang, Bai Yu, L. Hang

引用次数: 0