JSME 2020 Conference on Leading Edge Manufacturing/Materials and Processing最新文献

Calibration and Compensation of Rotary Axis Angular Positioning Deviations on a SCARA-Type Industrial Robot Using a Laser Tracker scara型工业机器人旋转轴角定位偏差的激光跟踪标定与补偿

JSME 2020 Conference on Leading Edge Manufacturing/Materials and Processing Pub Date : 2020-09-03 DOI: 10.1299/jsmecs.2020.58.10a1

Nan Zhao, S. Ibaraki

{"title":"Calibration and Compensation of Rotary Axis Angular Positioning Deviations on a SCARA-Type Industrial Robot Using a Laser Tracker","authors":"Nan Zhao, S. Ibaraki","doi":"10.1299/jsmecs.2020.58.10a1","DOIUrl":"https://doi.org/10.1299/jsmecs.2020.58.10a1","url":null,"abstract":"\u0000 In general, the “absolute” positioning accuracy of industrial robots is significantly lower than its repeatability. In the past research, in order to improve a robot’s positioning accuracy over the entire workspace, the compensation for the link length errors and the rotation axis angle offsets are often employed. However, the positioning error of the compensated industrial robot is still much higher than that of a typical machine tool. The purpose of this study is to propose a new kinematic model and its calibration scheme to further improve the absolute positional accuracy of an industrial robot over the entire workspace. In order to simplify the problem, this study only targets the 2D positioning accuracy of a SCARA-type robot. The proposed model includes not only link length errors and rotary axis angular offsets but also the “error map” of the angular positioning deviation of each rotary axis. The angular error deviation of each rotary axis is identified by measuring the robot’s end-effector position by a laser tracker at many positions. To verify the validity of the identified model, the effectiveness of the compensation based on it is also investigated.","PeriodicalId":333363,"journal":{"name":"JSME 2020 Conference on Leading Edge Manufacturing/Materials and Processing","volume":"162 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127306054","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: 2

Control of Material Flow During Friction Stir Welding Between Aluminum and Steel by Welding Tool Shape 用焊具形状控制铝钢搅拌摩擦焊过程中的物料流动

JSME 2020 Conference on Leading Edge Manufacturing/Materials and Processing Pub Date : 2020-09-03 DOI: 10.1115/LEMP2020-8594

T. Yasui, Y. Ogura, Xu Huilin, F. Najwa, D. Sugimoto, Atsushi Ito, M. Fukumoto

引用次数: 1

Twin Roll Casting of Copper Alloy C19210 Using Commercial Scale Machine 铜合金C19210的双辊铸造

JSME 2020 Conference on Leading Edge Manufacturing/Materials and Processing Pub Date : 2020-09-03 DOI: 10.1299/jsmemp.2019.27.425

Shogo Imai, Makoto Hagiawara, Yuto Horigome, S. Nishida

{"title":"Twin Roll Casting of Copper Alloy C19210 Using Commercial Scale Machine","authors":"Shogo Imai, Makoto Hagiawara, Yuto Horigome, S. Nishida","doi":"10.1299/jsmemp.2019.27.425","DOIUrl":"https://doi.org/10.1299/jsmemp.2019.27.425","url":null,"abstract":"\u0000 Copper alloy C19210 have excellent corrosion resistance, heat resistance, and conductivity, and is used for precision electronic parts such as lead frame materials. Conventionally, copper alloy strips are manufactured by repeating heat treatment and cold rolling, and have a problem that it is multi-process and production cost is expensive. On the other hand, twin roll casting can improve the above problems because strips are made directly from molten metals. In this study, twin roll strip casting of copper alloy C19210 using commercial scale machine was operated. The aims of this study is to investigate the possibility of strip casting for copper alloy. The effect of the side dam and release agent was researched. The effect of rolls speed on the strip surface condition was researched. The improved side dam prevented molten metal leakage. The release agent prevented sticking of the manufactured strip to the roll surface. The strip produced at roll speed of 7 m/min and 10 m/min had a lot of metallic luster. Moreover, the strip produced at roll speed of 7 m/min had more metallic luster than the strip produced at roll speed of 10 m/min. The lower the roll speed is, the greater the rolling load is. At a roll speed of 7 m / min, the rolling load became the maximum rolling load of the equipment. For producing strips with copper alloy C19210, higher rolling loads are preferred.","PeriodicalId":333363,"journal":{"name":"JSME 2020 Conference on Leading Edge Manufacturing/Materials and Processing","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126122424","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

Study on Polishing Method Using Double Magnet System by Superconductive Assisted Machining Method 超导辅助加工双磁体系统抛光方法研究

JSME 2020 Conference on Leading Edge Manufacturing/Materials and Processing Pub Date : 2020-09-03 DOI: 10.1115/LEMP2020-8553

Keisuke Suzuki, T. Nakasaki, H. Nakashima, Panart Kajornrunruan, Misaki Onomata, Y. Kinoshita, Ruizhe Zhang, E. Otabe

{"title":"Study on Polishing Method Using Double Magnet System by Superconductive Assisted Machining Method","authors":"Keisuke Suzuki, T. Nakasaki, H. Nakashima, Panart Kajornrunruan, Misaki Onomata, Y. Kinoshita, Ruizhe Zhang, E. Otabe","doi":"10.1115/LEMP2020-8553","DOIUrl":"https://doi.org/10.1115/LEMP2020-8553","url":null,"abstract":"\u0000 Superconductive Assisted Machining Method (SUAM) has been studied for polishing methods inside the hollow structure such as SUS tube. Levitation tool with Nd permanent magnet in the SUAM system is trapped by magnetic flux pinning effect into the superconductor bulk mounted in the liquid nitrogen box. In this case, initial displacement of the levitation tool can be adjusted until 12mm during cooling process under magnetic field. Movement of the superconductor bulk controls the applied force and rotation speed of the levitation tool. In previous research, we demonstrated that the SUAM could be applied lapping and polishing process on concave and flat shapes of the resin, aluminum and SUS materials. In present study, we develop the double magnet system that Nd permanent magnet fixed under the superconductor to increase holding force of the levitation tools. As results, holding force and levitation amount of the double magnet system increase against the conventional single magnet system. We also evaluate dominant parameters such as the placement of the superconductors and magnet flux density distribution from double permanent magnets on the holding force and levitation amount. In this case, the holding force and floating amount is calculated by JMAG using Finite Element Method to compare with the experimental results.","PeriodicalId":333363,"journal":{"name":"JSME 2020 Conference on Leading Edge Manufacturing/Materials and Processing","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117174413","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