Planar Four-Bar Motion Generation with Prescribed Static Torque and Rigid-Body Reaction Force

• Published in: Mechanics Based Design of Structures and Machines Vol. 37; no. 1; pp. 73 - 85
• Main Authors: Al-Smadi, Yahia M., Shen, Qiong, Russell, Kevin, Sodhi, Raj S.
• Format: Journal Article
• Language: English
• Published: Philadelphia, PA Taylor & Francis Group 01.01.2009; Taylor & Francis
• Subjects: Applied sciences; Driver static torque; Drives; Exact sciences and technology; Four-bar mechanism; Linkage mechanisms, cams; Mechanical engineering. Machine design; Motion generation; Rigid-body load; Shafts, couplings, clutches, brakes; Body force; Braking; Planar mechanism; Rigid-body load; Reaction force; Motion generation; Modeling; Posture; Four-bar mechanism; Guidance; Driver static torque; Four bar mechanism; Linkage mechanism
• ISSN: 1539-7734; 1539-7742; 1525-612X
• DOI: 10.1080/15397730802713389

In motion generation, the objective is to calculate the mechanism parameters required to achieve or approximate a set of prescribed rigid-body poses. This work introduces a new design constraint that considers driving link static torque for a given rigid-body load. By incorporating this new constraint into conventional planar four-bar motion generation models (Sandor and Erdman, 1984 ; Suh and Radcliffe 1978 ), planar four-bar mechanisms are synthesized to achieve not only prescribed rigid-body poses, but also to satisfy prescribed driver static torque for a given rigid-body load. The included example demonstrates the synthesis of a four-bar braking mechanism.