scholarly journals Synthetica 2.0: Software for the Synthesis of Constrained Serial Chains

2004 ◽  
Author(s):  
Alba Perez ◽  
Hai-Jun Su ◽  
J. Michael McCarthy
Keyword(s):  
Computer Aided Design ◽  
Visualization Analysis ◽  
Task Definition ◽  
Computer Aided ◽  
Analysis And Synthesis ◽  
Spatial Linkages ◽  
Aided Design ◽  
Serial Chains

A spatial linkage is defined by a workpiece supported by one or more serial chains. We say that the spatial linkage can perform a given task when this task belongs to its workspace. A task can be specified as a discrete set of positions or as a set of curves or surfaces. Spatial serial chains can be synthesized to perform specified tasks, and combined to form more complicated linkages. Recently we developed Synthetica 1.0, a Java-based architecture for the computer-aided-design of spatial linkages that contains task definition and visualization, and linkage visualization, analysis and synthesis modules. In this paper, we present the new version, Synthetica 2.0. Among other additions, the new version includes task interpolation, a selection matrix, a generic synthesizer and several specialized synthesis procedures for constrained spatial linkages.

CONSTRUCTION OF SCREW GEOMETRY VIA 3-D CAD SYSTEM FOR THE ANALYSIS AND SYNTHESIS OF SPATIAL MECHANISMS

2000 ◽  
Vol 24 (2) ◽  
pp. 401-413
Author(s):  
F.Z. Chen ◽  
M.J. Tsai
Keyword(s):  
Kinematic Analysis ◽  
Computer Aided Design ◽  
Graphical Method ◽  
Graphic Method ◽  
Efficient Process ◽  
Cad System ◽  
Spatial Mechanisms ◽  
Computer Aided ◽  
Analysis And Synthesis ◽  
Aided Design

This paper investigates the application of computer-aided design and drawing (CAD) software to the kinematic analysis and synthesis of spatial mechanisms based upon screw geometry. The advantages of the graphic method for the synthesis and analysis of mechanisms are straightforward, comprehensive, clearly represented, and easy to correlate to a real mechanism. Using conventional 3-D CAD software, the screw axes and joint axes are constructed as virtual parts. The relationships of joint axes that are constrained by screw geometry are the assembly conditions for the virtual parts in the CAD system. This paper shows that, similar to the synthesis of a planar linkage, the synthesis of a spatial C-C dyad by the graphical method in a CAD system is an efficient process.

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