Planar Guidance Mechanism Synthesis based on Pole Curve Transformation

10.6567/IFToMM.14TH.WC.OS3.025

Song Lin；Jingshuai Liu；Yu Zhang

Planar guidance mechanism ； Pole curve method ； Geometric identifier ； Mechanism function module ； Generalized mechanism synthesis

Proceedings of the 14th IFToMM World Congress

14th-1（2015 / 10 / 23）

661 - 666

英文

The classical methods to solve planar guidance tasks are mostly based on Burmester theory. In view of the existing defects for these classical methods, such as the mechanism type constraint and its functional uncertainty, a generalized synthesis approach is given by Lin. However, this approach cannot determine the geometrical location of the solution mechanism directly. To solve this problem, this work demonstrates that the envelope of mechanism pole curves have relation to its frame location. Firstly, the solution mechanism is achieved by unsharpened position synthesis method, then combined with pole curve transformation to adjust the mechanism installation positions by changing its dimensional parameters. Using this combined method, the solution mechanisms will not limited to the linkage type and can avoid the synthesis failures while the geometrical location can be determined simultaneously. The example of workpiece conveying system with five given positions shows the application of this composite motion generation approach.