Pub Date : 2019-11-01DOI: 10.2991/pntim-19.2019.21
Tian Junwei, Ding Ruimin, Li Jintao, Zhang Yanling
How to find the fire source point is the key technical point of the indoor fire-fighting robot in the operation process. The proposed low-cost comprehensive detection fire source solution using multi-sensor and surveillance camera photo recognition can successfully solve the problem that the fire-fighting robot can accurately search for the fire point indoors. The problem is that the fire-fighting device equipped by the robot can perform fire-fighting operation and issue an alarm after the fire source is discovered, and the loss of personnel property is minimized. Keywords-Multi-sensor; Fire-fighting Robot; Fusion Detection; Fire Extinguishing Device
{"title":"Research on Fire Fighting Scheme of Indoor Fire Fighting Robot Based on Multi-sensor","authors":"Tian Junwei, Ding Ruimin, Li Jintao, Zhang Yanling","doi":"10.2991/pntim-19.2019.21","DOIUrl":"https://doi.org/10.2991/pntim-19.2019.21","url":null,"abstract":"How to find the fire source point is the key technical point of the indoor fire-fighting robot in the operation process. The proposed low-cost comprehensive detection fire source solution using multi-sensor and surveillance camera photo recognition can successfully solve the problem that the fire-fighting robot can accurately search for the fire point indoors. The problem is that the fire-fighting device equipped by the robot can perform fire-fighting operation and issue an alarm after the fire source is discovered, and the loss of personnel property is minimized. Keywords-Multi-sensor; Fire-fighting Robot; Fusion Detection; Fire Extinguishing Device","PeriodicalId":344913,"journal":{"name":"Proceedings of the 2019 International Conference on Precision Machining, Non-Traditional Machining and Intelligent Manufacturing (PNTIM 2019)","volume":"6 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":"114320240","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}
Pub Date : 2019-11-01DOI: 10.2991/pntim-19.2019.35
Zhou Xian, Wang Feng, Du Hubing
In order to measure the surface of object’s 3D contour, we proposed a phase shifting shadow moiré technique based on varying light position. The method can remove the mechanical motion in the process of measurement, and sample the fringe pattern of phase shifting quickly. However, when we sample the sequence of phase shifting with the method of varying light, because of the light position changed, the background and amplitude of fringe pattern will be modulated. so the classical method of phase shifting can’t be used for picking up measurement phase, so as to solve this problem, A new shadow moiré method based on the spiral phase transform (SPT) is proposed in the process of demodulating phase, this method need to use two frame images of varying light position, and calculate phase shifting in sequence, estimate the height of measurement, finally, a new iterative algorithm of adaptation is designed to pick up measurement phase. The experimental results show the effective of this method. Keywords-Component; Measurement; Two Frames Tuning Phase Shift; Shadow MoirÉ; Spiral Phase Transform; Iterative Algorithm
{"title":"A Phase Shifting Shadow MoirÉ Method Using Two Frame Images of Varying Light","authors":"Zhou Xian, Wang Feng, Du Hubing","doi":"10.2991/pntim-19.2019.35","DOIUrl":"https://doi.org/10.2991/pntim-19.2019.35","url":null,"abstract":"In order to measure the surface of object’s 3D contour, we proposed a phase shifting shadow moiré technique based on varying light position. The method can remove the mechanical motion in the process of measurement, and sample the fringe pattern of phase shifting quickly. However, when we sample the sequence of phase shifting with the method of varying light, because of the light position changed, the background and amplitude of fringe pattern will be modulated. so the classical method of phase shifting can’t be used for picking up measurement phase, so as to solve this problem, A new shadow moiré method based on the spiral phase transform (SPT) is proposed in the process of demodulating phase, this method need to use two frame images of varying light position, and calculate phase shifting in sequence, estimate the height of measurement, finally, a new iterative algorithm of adaptation is designed to pick up measurement phase. The experimental results show the effective of this method. Keywords-Component; Measurement; Two Frames Tuning Phase Shift; Shadow MoirÉ; Spiral Phase Transform; Iterative Algorithm","PeriodicalId":344913,"journal":{"name":"Proceedings of the 2019 International Conference on Precision Machining, Non-Traditional Machining and Intelligent Manufacturing (PNTIM 2019)","volume":"19 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":"114850960","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}
Pub Date : 2019-11-01DOI: 10.2991/pntim-19.2019.29
Tian Junwei, Huang Shuzhao, W. Qin, Zhao Xuehang
For the problem that the mechanical arm is unstable under water and the position accuracy is low. This paper designed an underwater manipulator test platform. Good attitude control and high grip accuracy can be achieved. Through the analysis of the mechanical body, the overall structural layout of the mechanical arm and the hardware control of the mechanical arm are determined. Considering the working requirements of the test platform is to meet the load-bearing weight of 30kg, the operating range is not less than 400mm, etc., and design a motor suitable for this platform. Finally, stress simulation and finite element analysis of the load-bearing parts (U-shaped plate) of the platform are carried out. The results show that the maximum displacement of the U-shaped bottom plate is located in the middle of the bottom plate, which is approximately 4.553e-0.002mm. The maximum stress is 1.505e+0.007N/m^2. The yield stress of the material is 6.204e+0.008N/m^2, which satisfies the requirement of yield stress. Prove that the design is reasonable. Keywords-Underwater Robot Arm; Test Platform; Motor; Finite Element Analysis
{"title":"Underwater Robotic Arm Test Platform","authors":"Tian Junwei, Huang Shuzhao, W. Qin, Zhao Xuehang","doi":"10.2991/pntim-19.2019.29","DOIUrl":"https://doi.org/10.2991/pntim-19.2019.29","url":null,"abstract":"For the problem that the mechanical arm is unstable under water and the position accuracy is low. This paper designed an underwater manipulator test platform. Good attitude control and high grip accuracy can be achieved. Through the analysis of the mechanical body, the overall structural layout of the mechanical arm and the hardware control of the mechanical arm are determined. Considering the working requirements of the test platform is to meet the load-bearing weight of 30kg, the operating range is not less than 400mm, etc., and design a motor suitable for this platform. Finally, stress simulation and finite element analysis of the load-bearing parts (U-shaped plate) of the platform are carried out. The results show that the maximum displacement of the U-shaped bottom plate is located in the middle of the bottom plate, which is approximately 4.553e-0.002mm. The maximum stress is 1.505e+0.007N/m^2. The yield stress of the material is 6.204e+0.008N/m^2, which satisfies the requirement of yield stress. Prove that the design is reasonable. Keywords-Underwater Robot Arm; Test Platform; Motor; Finite Element Analysis","PeriodicalId":344913,"journal":{"name":"Proceedings of the 2019 International Conference on Precision Machining, Non-Traditional Machining and Intelligent Manufacturing (PNTIM 2019)","volume":"335 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":"116125302","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}
Pub Date : 2019-11-01DOI: 10.2991/pntim-19.2019.63
Yan Fuli, Hou Xingzhe
At present, electric power company judgment on abnormal line loss is that the line loss is abnormal when the line loss rate exceeds a certain threshold. Yet the judgement is one-sidedness and limited.Aiming at the large proportion of low-voltage distribution network loss in the total loss of power grid, this paper introduces the line loss analysis process, constructs the line loss analysis model based on smart electric meter the four dimensional eigenvalues of daily average line loss rate, line loss rate variation coefficient, three-phase imbalance, power factor abnormality, and puts forward a method of identifying line loss abnormality in low-voltage distribution network based on clustering algorithm. The experimental results show that the method has certain practical application effects, which can accurately analyze the line loss rate and improve the accuracy of line loss anomaly judgment. Keywords-Component; Line Loss Rate; Loss Abnormal; Low-Voltage Distribution Network; Clustering Algorithm
{"title":"Research on Line Loss of Low-Voltage Substation Based on Smart Electric Meter Clustering Algorithm","authors":"Yan Fuli, Hou Xingzhe","doi":"10.2991/pntim-19.2019.63","DOIUrl":"https://doi.org/10.2991/pntim-19.2019.63","url":null,"abstract":"At present, electric power company judgment on abnormal line loss is that the line loss is abnormal when the line loss rate exceeds a certain threshold. Yet the judgement is one-sidedness and limited.Aiming at the large proportion of low-voltage distribution network loss in the total loss of power grid, this paper introduces the line loss analysis process, constructs the line loss analysis model based on smart electric meter the four dimensional eigenvalues of daily average line loss rate, line loss rate variation coefficient, three-phase imbalance, power factor abnormality, and puts forward a method of identifying line loss abnormality in low-voltage distribution network based on clustering algorithm. The experimental results show that the method has certain practical application effects, which can accurately analyze the line loss rate and improve the accuracy of line loss anomaly judgment. Keywords-Component; Line Loss Rate; Loss Abnormal; Low-Voltage Distribution Network; Clustering Algorithm","PeriodicalId":344913,"journal":{"name":"Proceedings of the 2019 International Conference on Precision Machining, Non-Traditional Machining and Intelligent Manufacturing (PNTIM 2019)","volume":"46 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":"116301837","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}
Pub Date : 2019-11-01DOI: 10.2991/pntim-19.2019.14
Deng Ruixiang, Q. Hu, An Jiaxiang, He Jiang
Abrasive belt grinding technology is an important part of the precision forming process of complex profile parts. Based on the planning of grinding path, contact model and material removal model, the research and application progress of abrasive belt grinding technology at home and abroad are summarized, and the problems and research directions in the research of complex profile abrasive belt grinding technology are pointed out. Keywords-Abrasive Belt Grinding; Complex Surface
{"title":"Overview on Abrasive Belt Grinding for Complex Surface","authors":"Deng Ruixiang, Q. Hu, An Jiaxiang, He Jiang","doi":"10.2991/pntim-19.2019.14","DOIUrl":"https://doi.org/10.2991/pntim-19.2019.14","url":null,"abstract":"Abrasive belt grinding technology is an important part of the precision forming process of complex profile parts. Based on the planning of grinding path, contact model and material removal model, the research and application progress of abrasive belt grinding technology at home and abroad are summarized, and the problems and research directions in the research of complex profile abrasive belt grinding technology are pointed out. Keywords-Abrasive Belt Grinding; Complex Surface","PeriodicalId":344913,"journal":{"name":"Proceedings of the 2019 International Conference on Precision Machining, Non-Traditional Machining and Intelligent Manufacturing (PNTIM 2019)","volume":"190 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120991464","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}
With the coming of the era of intelligence, machine vision and machine learning has become a research hotspot in recent years[1]. As an advanced manufacturing technology at present, 3D printing has been maturely applied in aerospace, bio-medicine and other fields[2]. However, a defect such as extruder head blockage, filament break, height error, warping and cracking occurred during the 3D printing process directly affects the printing quality and even the printing success rate. It is an inevitable trend to develop on-line monitoring on the health status of 3D printing devices to achieve unmanned operation of 3D printing. Therefore, this paper proposes a research on the on-line monitoring and compensation algorithm of 3D printing based on machine vision, which is significant to promote the development of 3D printing technology. The printing process usually takes certain time so it couldn’t be tracked and recognized by human eyes. Therefore, based on printing experiments and printing defect analysis, this paper comprehensively analyzes the monitoring mechanism, puts forward four monitoring elements and carries out certain theoretical analysis, aiming to realize realtime monitoring and improve printing success rate. Meanwhile, this paper analyzes the on-line monitoring by machine vision and compensation algorithm in theory, in order to guide the establishment of related experimental platform. Keywords-3D Printing; Defect Analysis; On-Line Monitoring; Theoretical Analysis
{"title":"Experimental Research on On-line Monitoring and Compensation Algorithm of 3D Printing Based on Machine Vision","authors":"Zeng Lianghua, Zou Xinfeng","doi":"10.2991/pntim-19.2019.4","DOIUrl":"https://doi.org/10.2991/pntim-19.2019.4","url":null,"abstract":"With the coming of the era of intelligence, machine vision and machine learning has become a research hotspot in recent years[1]. As an advanced manufacturing technology at present, 3D printing has been maturely applied in aerospace, bio-medicine and other fields[2]. However, a defect such as extruder head blockage, filament break, height error, warping and cracking occurred during the 3D printing process directly affects the printing quality and even the printing success rate. It is an inevitable trend to develop on-line monitoring on the health status of 3D printing devices to achieve unmanned operation of 3D printing. Therefore, this paper proposes a research on the on-line monitoring and compensation algorithm of 3D printing based on machine vision, which is significant to promote the development of 3D printing technology. The printing process usually takes certain time so it couldn’t be tracked and recognized by human eyes. Therefore, based on printing experiments and printing defect analysis, this paper comprehensively analyzes the monitoring mechanism, puts forward four monitoring elements and carries out certain theoretical analysis, aiming to realize realtime monitoring and improve printing success rate. Meanwhile, this paper analyzes the on-line monitoring by machine vision and compensation algorithm in theory, in order to guide the establishment of related experimental platform. Keywords-3D Printing; Defect Analysis; On-Line Monitoring; Theoretical Analysis","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":"124776345","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}
Pub Date : 2019-11-01DOI: 10.2991/pntim-19.2019.39
W. Nan, D. Feng
The reliability of the fatigue life of the contacts part of the electrical connector is an important aspect of the mechanical equipment reliability. Aiming at the reliability problem of fatigue life of 450 series multi-purpose spring electrical connector contacts part, A fatigue life calculation method based on ABAQUS/FE-SAFE for the contacts part of the electrical connector is proposed. By establishing a threedimensional model of the contacts part of the electrical connector, the finite element software ABAQUS can be used to calculate the contact performance during the single insertion and removal of contacts. According to the stress state of the contact, the physical model of fatigue failure of the contact is established. Then the joint fatigue analysis software FE-SAFE is used to establish the simulation calculation model of the fatigue life of the contact, and the fatigue life of the contact can be inferred. The paper proposes a reliability calculation method for contacts part to prevent major safety accidents caused by contact failure. It is of great practical significance to guide the design, processing and inspection of electrical connector contacts part. Keywords-Electrical Connector; Contacts Part; Fatigue Life; Simulation
{"title":"Fatigue Life Analysis of Electrical Connector Contacts Part Based on ABAQUS/FE-SAFE","authors":"W. Nan, D. Feng","doi":"10.2991/pntim-19.2019.39","DOIUrl":"https://doi.org/10.2991/pntim-19.2019.39","url":null,"abstract":"The reliability of the fatigue life of the contacts part of the electrical connector is an important aspect of the mechanical equipment reliability. Aiming at the reliability problem of fatigue life of 450 series multi-purpose spring electrical connector contacts part, A fatigue life calculation method based on ABAQUS/FE-SAFE for the contacts part of the electrical connector is proposed. By establishing a threedimensional model of the contacts part of the electrical connector, the finite element software ABAQUS can be used to calculate the contact performance during the single insertion and removal of contacts. According to the stress state of the contact, the physical model of fatigue failure of the contact is established. Then the joint fatigue analysis software FE-SAFE is used to establish the simulation calculation model of the fatigue life of the contact, and the fatigue life of the contact can be inferred. The paper proposes a reliability calculation method for contacts part to prevent major safety accidents caused by contact failure. It is of great practical significance to guide the design, processing and inspection of electrical connector contacts part. Keywords-Electrical Connector; Contacts Part; Fatigue Life; Simulation","PeriodicalId":344913,"journal":{"name":"Proceedings of the 2019 International Conference on Precision Machining, Non-Traditional Machining and Intelligent Manufacturing (PNTIM 2019)","volume":"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":"128077481","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}
Pub Date : 2019-11-01DOI: 10.2991/pntim-19.2019.19
Yin Simin, Cao Yan, Wang Yuanfei, Zhen Ning
In the selective laser melting process, high mechanical stability, excellent thermal performance and rheological property are required for printable materials, and due to the change of environmental conditions such as external force and temperature rise during the forming process and the using process of the forming part, The multi-phase structure of the material is changed, so that the mechanical property of the material is changed, and the change of the forming part is mainly manifested in the change of the rheological property. The rheological property of the 17-4PH powder material was studied to ensure the mechanical properties of the material after laser sintering. The results show that the viscosity of the 17-4PH powder material decreases with the increase of the shear rate, has good flow formability during the subsequent selective laser sintering process, And the forming part can meet the mechanical property requirement in the actual production and processing use. Keywords-3D Printing; Selective Laser Melting; Metal Rheology; Viscosity; Mechanical Properties
{"title":"Analysis of Rheological Properties of Selective Laser Melting 17-4PH Powder","authors":"Yin Simin, Cao Yan, Wang Yuanfei, Zhen Ning","doi":"10.2991/pntim-19.2019.19","DOIUrl":"https://doi.org/10.2991/pntim-19.2019.19","url":null,"abstract":"In the selective laser melting process, high mechanical stability, excellent thermal performance and rheological property are required for printable materials, and due to the change of environmental conditions such as external force and temperature rise during the forming process and the using process of the forming part, The multi-phase structure of the material is changed, so that the mechanical property of the material is changed, and the change of the forming part is mainly manifested in the change of the rheological property. The rheological property of the 17-4PH powder material was studied to ensure the mechanical properties of the material after laser sintering. The results show that the viscosity of the 17-4PH powder material decreases with the increase of the shear rate, has good flow formability during the subsequent selective laser sintering process, And the forming part can meet the mechanical property requirement in the actual production and processing use. Keywords-3D Printing; Selective Laser Melting; Metal Rheology; Viscosity; Mechanical Properties","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":"128902462","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}
Pub Date : 2019-11-01DOI: 10.2991/pntim-19.2019.12
Qi Lijun, M. Baoji
In the present study, the experiments have been made to investigate the effect of wire electrical discharge machining (WEDM) parameters such as pulse duration, pulse off time, discharge current , working voltage on the material removal rate and the surface roughness (Ra) during WEDM of particulate silicon carbide aluminum (SiC/Al) metal matrix composites. It was found that the material removal rate and the surface roughness of the SiC/Al matrix composites with the SiC content of wt.10% SiC/Al is higher than the SiC content of wt.5%. The removal rate increases with the increase of discharge current; and first increases with the pulse duration, when the pulse duration reaches 11μs, the removal rate shows a slow downward trend. The material removal rate decreases with the values increase of pulse off time and working voltage. The surface roughness of the work piece increase with the increases of pulse duration and discharge current, while the effect by pulse off time and working voltage is not significant. The surface morphology was observed by SEM, found that the surface of SiC/Al matrix composites by WEDM is mainly composed of molten recasting layer, little ball of different diameters, pits, holes and a few micro fissure. Keywords-Sic; Al Matrix Composite; WEDM; Parameters; Material Removal Rate; Surface Roughness
{"title":"Material Removal Rate and Surface Roughness of SiC/Al Matrix Composites Machined by Wire Electrical Discharge Machining: Experimental Method","authors":"Qi Lijun, M. Baoji","doi":"10.2991/pntim-19.2019.12","DOIUrl":"https://doi.org/10.2991/pntim-19.2019.12","url":null,"abstract":"In the present study, the experiments have been made to investigate the effect of wire electrical discharge machining (WEDM) parameters such as pulse duration, pulse off time, discharge current , working voltage on the material removal rate and the surface roughness (Ra) during WEDM of particulate silicon carbide aluminum (SiC/Al) metal matrix composites. It was found that the material removal rate and the surface roughness of the SiC/Al matrix composites with the SiC content of wt.10% SiC/Al is higher than the SiC content of wt.5%. The removal rate increases with the increase of discharge current; and first increases with the pulse duration, when the pulse duration reaches 11μs, the removal rate shows a slow downward trend. The material removal rate decreases with the values increase of pulse off time and working voltage. The surface roughness of the work piece increase with the increases of pulse duration and discharge current, while the effect by pulse off time and working voltage is not significant. The surface morphology was observed by SEM, found that the surface of SiC/Al matrix composites by WEDM is mainly composed of molten recasting layer, little ball of different diameters, pits, holes and a few micro fissure. Keywords-Sic; Al Matrix Composite; WEDM; Parameters; Material Removal Rate; Surface Roughness","PeriodicalId":344913,"journal":{"name":"Proceedings of the 2019 International Conference on Precision Machining, Non-Traditional Machining and Intelligent Manufacturing (PNTIM 2019)","volume":"1 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":"129829886","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}
Pub Date : 1900-01-01DOI: 10.2991/pntim-19.2019.45
X. Xin, Yajuan Wang, Liu Bo, Jun-an Zhang
Flexible plate spring plays an important role in gap seal and reliability of free piston Stirling heat pump. Eccentric flexible plate spring is widely used in Stirling machine because of its better stress distribution and larger radial stiffness ratio. In this paper, the influence factor of three-groove eccentric involute flexible plate spring eccentricity is analyzed in detail, and the value range of eccentricity in the design process of eccentric flexible spring is obtained by establishing a mathematical model. Through finite element analysis, the variation of radial and axial stiffness of eccentric flexible spring with different eccentricity is summarized. This study provides a basis for the design of later eccentric flexible spring. Keywords-Eccentricity; Flexible Spring; Finite Element; Radial And Axial Stiffness
{"title":"Analysis of the Influence of Eccentricity on the Performance of Eccentric Involute Flexible Spring","authors":"X. Xin, Yajuan Wang, Liu Bo, Jun-an Zhang","doi":"10.2991/pntim-19.2019.45","DOIUrl":"https://doi.org/10.2991/pntim-19.2019.45","url":null,"abstract":"Flexible plate spring plays an important role in gap seal and reliability of free piston Stirling heat pump. Eccentric flexible plate spring is widely used in Stirling machine because of its better stress distribution and larger radial stiffness ratio. In this paper, the influence factor of three-groove eccentric involute flexible plate spring eccentricity is analyzed in detail, and the value range of eccentricity in the design process of eccentric flexible spring is obtained by establishing a mathematical model. Through finite element analysis, the variation of radial and axial stiffness of eccentric flexible spring with different eccentricity is summarized. This study provides a basis for the design of later eccentric flexible spring. Keywords-Eccentricity; Flexible Spring; Finite Element; Radial And Axial Stiffness","PeriodicalId":344913,"journal":{"name":"Proceedings of the 2019 International Conference on Precision Machining, Non-Traditional Machining and Intelligent Manufacturing (PNTIM 2019)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121095752","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}
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