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DTSTAMP:20250110T023312Z
LOCATION:Hall B5 (1)\, B Block\, Level 5
DTSTART;TZID=Asia/Tokyo:20241204T171600
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UID:siggraphasia_SIGGRAPH Asia 2024_sess121_papers_210@linklings.com
SUMMARY:mpcMech: Multi-Point Conjugation Mechanisms
DESCRIPTION:Technical Papers\n\nKe Chen (University of Science and Technol
 ogy of China), Siqi Li and Peng Song (Singapore University of Technology a
 nd Design (SUTD)), Jianmin Zheng (Nanyang Technological University (NTU)),
  and Ligang Liu (University of Science and Technology of China)\n\nA mecha
 nism is an assembly of moving parts interconnected by joints to transfer a
 n input motion to a desired output motion. Traditionally, to generate a co
 mplex motion, mechanisms are modeled by selecting and combining a number o
 f mechanical parts with simple shapes such as links, gears, and cams. Comb
 ining multiple mechanical parts results in a mechanism with an intricate t
 opology, which not only complicates assembly and maintenance but also dete
 riorates the functionality of generating motions due to accumulation of ma
 nufacturing imprecisions. To get rid of these limitations, we study mechan
 isms with a single pair of moving parts for generating complex motions. We
  model the pair of moving parts as a pair of conjugate surfaces with multi
 ple conjugation points, forming a multi-point conjugation mechanism.\n\nTo
  study this new mechanism, we establish a connection between conjugate sur
 face pairs and form-closure grasps to formulate a dynamic form closure con
 dition under which one conjugate surface is able to continuously transfer 
 the motion to the other conjugate surface by utilizing multiple conjugatio
 n points. Guided by the condition, we propose an optimization-based approa
 ch to model the geometry of a multi-point conjugation mechanism for exactl
 y generating a user-specified motion, in 1-, 2-, or 3-DOF motion space. Th
 e core of our approach is to model multiple conjugate curve pairs that sat
 isfy various requirements in multi-point conjugation, dynamic form closure
 , and surface fabricability. We demonstrate the effectiveness of our appro
 ach by modeling different classes of multi-point conjugation mechanisms to
  generate various motions, evaluating the mechanisms’ kinematic performanc
 e with 3D printed prototypes, and presenting three applications of these m
 echanisms.\n\nRegistration Category: Full Access, Full Access Supporter\n\
 nLanguage Format: English Language\n\nSession Chair: Nobuyuki Umetani (Uni
 versity of Tokyo)
URL:https://asia.siggraph.org/2024/program/?id=papers_210&sess=sess121
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