Pub Date : 2019-10-01DOI: 10.1109/ICMECT.2019.8932155
Martin Gschösser, A. Mehrle, A. Kallel, A. Tcharkhtchi
This paper deals with the development of a numerical scheme to predict the growth of a bubble within a molten polymer. The model consists of one single bubble which expands through the decomposition of a foaming agent in a limited amount of polymer due to the steadily increasing temperature of the melt. The studied process refers to the foaming during the rotational molding. Through a pressure difference from the gas inside the bubble and the surrounding air, which can be seen as a driving force, the size of the bubble expands. The effects of viscosity and surface tension of the surrounding polymer need to be considered as resisting forces. Due to a gradient of the concentration of gas in the bubble interface a molecular diffusion takes place, which causes the bubble to shrink after the maximum size of the bubble is reached. The equations of momentum and continuity, mass balance and the diffusion-convection equation are solved numerically with the methods of finite elements or finite differences to obtain the resulting radius of the bubble. The numerically determined results are compared with experimental data. The process of the cycle is discussed with the use of different data like the gas pressure inside the bubble or the resulting number of gas molecules. Furthermore, the influence of different material properties is investigated.
{"title":"Introduction of the Diffusion Stage into the Bubble Growth Model","authors":"Martin Gschösser, A. Mehrle, A. Kallel, A. Tcharkhtchi","doi":"10.1109/ICMECT.2019.8932155","DOIUrl":"https://doi.org/10.1109/ICMECT.2019.8932155","url":null,"abstract":"This paper deals with the development of a numerical scheme to predict the growth of a bubble within a molten polymer. The model consists of one single bubble which expands through the decomposition of a foaming agent in a limited amount of polymer due to the steadily increasing temperature of the melt. The studied process refers to the foaming during the rotational molding. Through a pressure difference from the gas inside the bubble and the surrounding air, which can be seen as a driving force, the size of the bubble expands. The effects of viscosity and surface tension of the surrounding polymer need to be considered as resisting forces. Due to a gradient of the concentration of gas in the bubble interface a molecular diffusion takes place, which causes the bubble to shrink after the maximum size of the bubble is reached. The equations of momentum and continuity, mass balance and the diffusion-convection equation are solved numerically with the methods of finite elements or finite differences to obtain the resulting radius of the bubble. The numerically determined results are compared with experimental data. The process of the cycle is discussed with the use of different data like the gas pressure inside the bubble or the resulting number of gas molecules. Furthermore, the influence of different material properties is investigated.","PeriodicalId":309525,"journal":{"name":"2019 23rd International Conference on Mechatronics Technology (ICMT)","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124950127","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 : 2019-10-01DOI: 10.1109/ICMECT.2019.8932136
Nozomu Miyata, N. Iwatsuki, I. Ikeda
The authors have proposed a flexibly grasping and manipulating mechanism composed of two circular rings and many elastic cords between the rings. Aiming to control posture of the grasped object and to give the mechanism a remote center compliance ability, the mechanism is improved so that the relative translation between two rings can be given. A new numerical method to iteratively calculate the posture of a grasped object due to relative angular and translational displacements between the rings is established based on the equilibrium of force and moment applied by elastic cords. A prototype with a planar parallel mechanism with 2 DOF to give a pure relative translational motion between rings is built and experimentally examined. The prototype mounted on a spatial serial robot arm can grasp a cylinder and insert it into a circular hole in inclined surface by utilizing posture control and remote center compliance.
{"title":"A Flexibly Grasping and Manipulating Mechanism Composed of Many Elastic Cords — Posture Control of Grasped Object","authors":"Nozomu Miyata, N. Iwatsuki, I. Ikeda","doi":"10.1109/ICMECT.2019.8932136","DOIUrl":"https://doi.org/10.1109/ICMECT.2019.8932136","url":null,"abstract":"The authors have proposed a flexibly grasping and manipulating mechanism composed of two circular rings and many elastic cords between the rings. Aiming to control posture of the grasped object and to give the mechanism a remote center compliance ability, the mechanism is improved so that the relative translation between two rings can be given. A new numerical method to iteratively calculate the posture of a grasped object due to relative angular and translational displacements between the rings is established based on the equilibrium of force and moment applied by elastic cords. A prototype with a planar parallel mechanism with 2 DOF to give a pure relative translational motion between rings is built and experimentally examined. The prototype mounted on a spatial serial robot arm can grasp a cylinder and insert it into a circular hole in inclined surface by utilizing posture control and remote center compliance.","PeriodicalId":309525,"journal":{"name":"2019 23rd International Conference on Mechatronics Technology (ICMT)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125510538","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 : 2019-10-01DOI: 10.1109/ICMECT.2019.8932129
Mario Pisaturo, A. Senatore
Thermal degradation is a relevant issue in dry clutch transmissions such as Dual Clutch Transmissions and Automated Manual Transmissions. This occurs if numerous engagements are performed in short time or during up-hill start up manoeuvres. As a consequence of clutch overheating there are: poor control performances during the gearshift phase, resulting from fast and unforeseeable variation of frictional behavior, and reduced clutch lifespan. A solution could be exploit the small electric motor introduced in Mild-Hybrid vehicles to lessen air pollutant emissions and improve fuel economy. The main target of this manuscript is to highlight the electric motor operation to assist vehicle longitudinal dynamics and minimize clutch temperature rise.
{"title":"Intelligent Control Strategy for Electric Motor Management to Improve Dry-Clutch Performance in Mild Hybrid Vehicles","authors":"Mario Pisaturo, A. Senatore","doi":"10.1109/ICMECT.2019.8932129","DOIUrl":"https://doi.org/10.1109/ICMECT.2019.8932129","url":null,"abstract":"Thermal degradation is a relevant issue in dry clutch transmissions such as Dual Clutch Transmissions and Automated Manual Transmissions. This occurs if numerous engagements are performed in short time or during up-hill start up manoeuvres. As a consequence of clutch overheating there are: poor control performances during the gearshift phase, resulting from fast and unforeseeable variation of frictional behavior, and reduced clutch lifespan. A solution could be exploit the small electric motor introduced in Mild-Hybrid vehicles to lessen air pollutant emissions and improve fuel economy. The main target of this manuscript is to highlight the electric motor operation to assist vehicle longitudinal dynamics and minimize clutch temperature rise.","PeriodicalId":309525,"journal":{"name":"2019 23rd International Conference on Mechatronics Technology (ICMT)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126953912","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 : 2019-10-01DOI: 10.1109/ICMECT.2019.8932105
L. Scimmi, Matteo Melchiorre, S. Mauro, S. Pastorelli
Collaborative robotics implies the possibility for robots and humans to cooperate to perform a common task. A fundamental element to make collaboration possible is to ensure the safety of the human operators. In this paper a collision avoidance algorithm designed for a robotic redundant task is presented. This algorithm permits the robot to avoid collisions with obstacles (e.g. human operators) and in the same time to achieve the planned task when possible. The algorithm was tested with a UR3 robot of Universal Robots company, considering only tool centre point (TCP) position in order to obtain kinematic redundancy. The robot is controlled by an external PC that communicates with the controller of the robot via Ethernet network. The communication and control algorithms are written in the Matlab environment. The PC-UR communication functions permit to send joint velocities commands from the PC to the controller of the robot and feedback data from the UR to the PC. Control functions estimate the distances between an obstacle (whose position was acquired by a system of motion capture) and the robot and calculate the needed joints velocities to avoid any collision. The functions developed in Matlab will be explained in detail. Results of the experimental tests conducted to verify the effectiveness of the collision avoidance system are reported.
{"title":"Implementing a Vision-Based Collision Avoidance Algorithm on a UR3 Robot","authors":"L. Scimmi, Matteo Melchiorre, S. Mauro, S. Pastorelli","doi":"10.1109/ICMECT.2019.8932105","DOIUrl":"https://doi.org/10.1109/ICMECT.2019.8932105","url":null,"abstract":"Collaborative robotics implies the possibility for robots and humans to cooperate to perform a common task. A fundamental element to make collaboration possible is to ensure the safety of the human operators. In this paper a collision avoidance algorithm designed for a robotic redundant task is presented. This algorithm permits the robot to avoid collisions with obstacles (e.g. human operators) and in the same time to achieve the planned task when possible. The algorithm was tested with a UR3 robot of Universal Robots company, considering only tool centre point (TCP) position in order to obtain kinematic redundancy. The robot is controlled by an external PC that communicates with the controller of the robot via Ethernet network. The communication and control algorithms are written in the Matlab environment. The PC-UR communication functions permit to send joint velocities commands from the PC to the controller of the robot and feedback data from the UR to the PC. Control functions estimate the distances between an obstacle (whose position was acquired by a system of motion capture) and the robot and calculate the needed joints velocities to avoid any collision. The functions developed in Matlab will be explained in detail. Results of the experimental tests conducted to verify the effectiveness of the collision avoidance system are reported.","PeriodicalId":309525,"journal":{"name":"2019 23rd International Conference on Mechatronics Technology (ICMT)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115816636","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 : 2019-10-01DOI: 10.1109/ICMECT.2019.8932157
S. H. Kia, A. Hajjaji, Mohammad Hoseintabar Marzebali
The aim of this article is to present the planetary gear tooth fault detection using stator current space vector analysis in steady-state working condition of induction machine-based systems. For this study a universal method is used. The proposed technique is mainly relied on the computation of a transfer function which defines the response of the stator current space vector to the perturbations induced by gear tooth fault of the planetary gear located within the drive train. The idea of electrical-mechanical analogy is employed to facilitate the computation of the mentioned transfer function. This approach is considered as an upstream phase for studying the feasibility of gear tooth fault diagnosis using non-invasive measurement. A fault index is recommended for the fault severity evaluation at different levels of the mechanical load. The performance of the proposed fault index is validated through experiments using a representative induction machine-based test rig which includes a three-phase 5.5kW wound rotor induction machine connected to a fixed ring single-stage planetary gearbox.
{"title":"Planetary Gear Tooth Fault Detection using Stator Current Space Vector Analysis in Induction Machine-Based Systems","authors":"S. H. Kia, A. Hajjaji, Mohammad Hoseintabar Marzebali","doi":"10.1109/ICMECT.2019.8932157","DOIUrl":"https://doi.org/10.1109/ICMECT.2019.8932157","url":null,"abstract":"The aim of this article is to present the planetary gear tooth fault detection using stator current space vector analysis in steady-state working condition of induction machine-based systems. For this study a universal method is used. The proposed technique is mainly relied on the computation of a transfer function which defines the response of the stator current space vector to the perturbations induced by gear tooth fault of the planetary gear located within the drive train. The idea of electrical-mechanical analogy is employed to facilitate the computation of the mentioned transfer function. This approach is considered as an upstream phase for studying the feasibility of gear tooth fault diagnosis using non-invasive measurement. A fault index is recommended for the fault severity evaluation at different levels of the mechanical load. The performance of the proposed fault index is validated through experiments using a representative induction machine-based test rig which includes a three-phase 5.5kW wound rotor induction machine connected to a fixed ring single-stage planetary gearbox.","PeriodicalId":309525,"journal":{"name":"2019 23rd International Conference on Mechatronics Technology (ICMT)","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127570922","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 : 2019-10-01DOI: 10.1109/ICMECT.2019.8932099
Simon Hagemann, Atakan Sünnetcioglu, T. Fahse, R. Stark
The design of assembly systems has been mainly a manual task including activities such as gathering and analyzing product data, deriving the production process and assigning suitable manufacturing resources. Especially in the early phases of assembly system design in automotive industry, the complexity reaches a substantial level, caused by the increasing number of product variants and the decreased time to market. In order to mitigate the arising challenges, researchers are continuously developing novel methods to support the design of assembly systems. This paper presents an artificial intelligence system for assisting production engineers in the selection of suitable equipment for highly automated assembly systems.
{"title":"Neural Network Hyperparameter Optimization for the Assisted Selection of Assembly Equipment","authors":"Simon Hagemann, Atakan Sünnetcioglu, T. Fahse, R. Stark","doi":"10.1109/ICMECT.2019.8932099","DOIUrl":"https://doi.org/10.1109/ICMECT.2019.8932099","url":null,"abstract":"The design of assembly systems has been mainly a manual task including activities such as gathering and analyzing product data, deriving the production process and assigning suitable manufacturing resources. Especially in the early phases of assembly system design in automotive industry, the complexity reaches a substantial level, caused by the increasing number of product variants and the decreased time to market. In order to mitigate the arising challenges, researchers are continuously developing novel methods to support the design of assembly systems. This paper presents an artificial intelligence system for assisting production engineers in the selection of suitable equipment for highly automated assembly systems.","PeriodicalId":309525,"journal":{"name":"2019 23rd International Conference on Mechatronics Technology (ICMT)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129766285","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 : 2019-10-01DOI: 10.1109/ICMECT.2019.8932128
K. Shi, T. Dinh, J. Marco
This paper presents the dynamic modelling of a bidirectional active clamp forward converter with synchronous rectifier (ACFC-SR) active cell balancing (ACB) applications. A switching model, an average model, and a small-signal model of the converter with peak current mode control (PCM) are developed. The developed models can be combined with the common ACB control system model such that the overall ACB control system performance can be accessed, such as the stability, the robustness against input voltage disturbances, and the tuning of multi-loop control parameters etc. The model-based design of the control algorithm for the overall ACB control system including both battery cell and power converter can be underpinned by the developed model. The influences of the harmonics and fast dynamics due to the use of power electronics on battery cell performance (e.g. battery ageing) will be further investigated. The transfer functions and bode plots of the converter is presented and the simulation results are carried out to verify the accuracy of models.
{"title":"Dynamic Modelling of the Bidirectional Active Clamp Forward Converter with Peak Current Mode Control for Active Cell Balancing","authors":"K. Shi, T. Dinh, J. Marco","doi":"10.1109/ICMECT.2019.8932128","DOIUrl":"https://doi.org/10.1109/ICMECT.2019.8932128","url":null,"abstract":"This paper presents the dynamic modelling of a bidirectional active clamp forward converter with synchronous rectifier (ACFC-SR) active cell balancing (ACB) applications. A switching model, an average model, and a small-signal model of the converter with peak current mode control (PCM) are developed. The developed models can be combined with the common ACB control system model such that the overall ACB control system performance can be accessed, such as the stability, the robustness against input voltage disturbances, and the tuning of multi-loop control parameters etc. The model-based design of the control algorithm for the overall ACB control system including both battery cell and power converter can be underpinned by the developed model. The influences of the harmonics and fast dynamics due to the use of power electronics on battery cell performance (e.g. battery ageing) will be further investigated. The transfer functions and bode plots of the converter is presented and the simulation results are carried out to verify the accuracy of models.","PeriodicalId":309525,"journal":{"name":"2019 23rd International Conference on Mechatronics Technology (ICMT)","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126943945","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 : 2019-10-01DOI: 10.1109/ICMECT.2019.8932120
Matteo Maria Pisani, Davide Iannazzone, M. Sorrentino, G. Rizzoni
Recovering solar energy, and then fully reusing it, can significantly improve light duty vehicles' efficiency, hence reducing the CO2 emissions and fuel consumption. The aim of this study is to investigate and explain how the solar energy flow affects the fuel economy (FE) and CO2 benefit in a particular hybrid vehicle configuration. The paper starts with the explanation of two different simulation models of a conventional vehicle and a mild hybrid (MH) vehicle along a defined path. A method is defined to estimate the battery state of charge constraint relaxing and then a modified forward model is used to assess solar energy contribution. An analysis of the three models (conventional, MH and solar mild hybrid) along a federal urban driving schedule (FUDS) is presented to compare the correct behavior of the models to follow a defined path and the improvements in terms of FE and CO2 emissions obtained via solar hybridization.
{"title":"Analysis of Fuel Savings Enabled by Photovoltaic Panel Addition on a 48V Mild Hybrid Vehicle","authors":"Matteo Maria Pisani, Davide Iannazzone, M. Sorrentino, G. Rizzoni","doi":"10.1109/ICMECT.2019.8932120","DOIUrl":"https://doi.org/10.1109/ICMECT.2019.8932120","url":null,"abstract":"Recovering solar energy, and then fully reusing it, can significantly improve light duty vehicles' efficiency, hence reducing the CO2 emissions and fuel consumption. The aim of this study is to investigate and explain how the solar energy flow affects the fuel economy (FE) and CO2 benefit in a particular hybrid vehicle configuration. The paper starts with the explanation of two different simulation models of a conventional vehicle and a mild hybrid (MH) vehicle along a defined path. A method is defined to estimate the battery state of charge constraint relaxing and then a modified forward model is used to assess solar energy contribution. An analysis of the three models (conventional, MH and solar mild hybrid) along a federal urban driving schedule (FUDS) is presented to compare the correct behavior of the models to follow a defined path and the improvements in terms of FE and CO2 emissions obtained via solar hybridization.","PeriodicalId":309525,"journal":{"name":"2019 23rd International Conference on Mechatronics Technology (ICMT)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131425980","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 : 2019-10-01DOI: 10.1109/ICMECT.2019.8932132
E. Najafi, M. Ansari
Pick and place robots are frequently used in industry for different applications. This paper presents an implementation of model-based design for a pick and place application as an industry 4.0 case study. A universal robotic arm (UR5) has been used as a set-up, where AutomationML describes the step by step algorithm in performing the objective task. AutomationML is a tool which has been used for documentation of the system decomposition as well as the control sequence of the algorithm. This allows for a better understanding of the system design and control objective.
{"title":"Model-Based Design Approach for an Industry 4.0 Case Study: A Pick and Place Robot","authors":"E. Najafi, M. Ansari","doi":"10.1109/ICMECT.2019.8932132","DOIUrl":"https://doi.org/10.1109/ICMECT.2019.8932132","url":null,"abstract":"Pick and place robots are frequently used in industry for different applications. This paper presents an implementation of model-based design for a pick and place application as an industry 4.0 case study. A universal robotic arm (UR5) has been used as a set-up, where AutomationML describes the step by step algorithm in performing the objective task. AutomationML is a tool which has been used for documentation of the system decomposition as well as the control sequence of the algorithm. This allows for a better understanding of the system design and control objective.","PeriodicalId":309525,"journal":{"name":"2019 23rd International Conference on Mechatronics Technology (ICMT)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126136996","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 : 2019-10-01DOI: 10.1109/ICMECT.2019.8932114
Keigo Takasugi, N. Asakawa, Ryota Kito, Takahiko Mizutani
A grain texture is frequently etched onto a die for plastic forming. Because depth control is difficult and very high skill is required for etching, machining has recently received attention as an alternative method. However, the amount of data for a grain texture for freeform surfaces designed in 3D-CAD is very large. This paper proposes a method for mapping a grain texture onto a freeform surface without distortion that does not utilize 3D-CAD. In the proposed method, the grain texture, in the form of an image, is mapped onto a target surface that is represented by parametric equations. Undistorted grain mapping to a non-developable applicable surface is essential. Equations that represent the isometric projection between the two-dimensional image and the parametric surface are derived. A case study is presented and the effectiveness of the proposed method is evaluated.
{"title":"Development of Uniform Grain Mapping for Freeform Surface","authors":"Keigo Takasugi, N. Asakawa, Ryota Kito, Takahiko Mizutani","doi":"10.1109/ICMECT.2019.8932114","DOIUrl":"https://doi.org/10.1109/ICMECT.2019.8932114","url":null,"abstract":"A grain texture is frequently etched onto a die for plastic forming. Because depth control is difficult and very high skill is required for etching, machining has recently received attention as an alternative method. However, the amount of data for a grain texture for freeform surfaces designed in 3D-CAD is very large. This paper proposes a method for mapping a grain texture onto a freeform surface without distortion that does not utilize 3D-CAD. In the proposed method, the grain texture, in the form of an image, is mapped onto a target surface that is represented by parametric equations. Undistorted grain mapping to a non-developable applicable surface is essential. Equations that represent the isometric projection between the two-dimensional image and the parametric surface are derived. A case study is presented and the effectiveness of the proposed method is evaluated.","PeriodicalId":309525,"journal":{"name":"2019 23rd International Conference on Mechatronics Technology (ICMT)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128597708","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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