KinSyn

KinSyn and the History of Kinematic Synthesis

My first experience with computer based kinematic synthesis was a 1982 presentation by Roger Kaufman of his KinSyn linkage design software on an Apple II microcomputer. This is a link to his description of his experience in those early days of computer-aided design of linkages.

His paper that describes this software can be found here. The photos are a terrific look into the computer technology in the 1970’s.

Here is a video that describes the operation of KinSyn, which I find to be an impressive integration of kinematics calculations in the background with a useful graphical presentation of information to the designer. I have to say that the graphical display was impressive in its day.


DIYWalkers

Strider and TrotBot at DIYWalkers.com

Just after I published my book Kinematic Synthesis of Mechanisms with its emphasis on leg mechanisms, I found two more interesting eight-bar legs from the designers at DIYWalkers.com

This is a Geogebra animation of the leg mechanism for the Strider walker. It is a symmetrical design that allows the formation of a second foot assembly by simply adding two more bars.

Strider leg mechanism.

This is an animation of the leg mechanism in the TrotBot walker.

TrotBot leg mechanism.


About Geogebra-Kinematic Synthesis of Mechanisms

The animated four-bar linkage FHJD is constructed using dimensions as the quadrilateral ABCD. The dynamic geometry software Geogebra maintains the dimensions of FHJD as the points of ABCD are moved. The result is that the animated linkage changes to match the new dimensions. This can be seen in following Movie.  For more information see Kinematic Synthesis of Mechanisms.

Chapter 6 Animations-Kinematic Synthesis of Mechanisms

Here are the eight Movies in Chapter 6 of Kinematic Synthesis of Mechanisms.

Movie 6.1

Movie 6.2

Movie 6.3

Movie 6.4

Movie 6.5

Movie 6.6

Movie 6.7

Movie 6.8

Chapter 5 Animations-Kinematic Synthesis of Mechanisms

Here are the four Movies in Chapter 5 of Kinematic Synthesis of Mechanisms.

Movie 5.1

Movie 5.2

Movie 5.3

Movie 5.4

Chapter 4 Animations-Kinematic Synthesis of Mechanisms

Here are the four Movies in Chapter 4 of Kinematic Synthesis of Mechanisms.

Movie 4.1

Movie 4.2

Movie 4.3

Movie 4.4

Chapter 3 Animations-Kinematic Synthesis of Mechanisms

Here are the four Movies in Chapter 3 of Kinematic Synthesis of Mechanisms.

Movie 3.1

Movie 3.2

Movie 3.3

Movie 3.4

Chapter 2 Animations-Kinematic Synthesis of Mechanisms

Here are the six Movies in Chapter 2 of Kinematic Synthesis of Mechanisms.

Movie 2.1

Movie 2.2

Movie 2.3

Movie 2.4

Movie 2.5

Movie 2.6

Chapter 1 Animations-Kinematic Synthesis of Mechanisms

Here are the three Movies in Chapter 1 of Kinematic Synthesis of Mechanisms.

Movie 1.1

Movie 1.2

Movie 1.3

Kinematic Synthesis of Mechanisms Title Video

This animation was prepared by Yang Liu of a walking machine designed by Mark Plecnik. This is the title video for my new book Kinematic Synthesis of Mechanism: A project based approach.

The book contains 82 color figures and 30 animations. It is available as an iBook and a Kindle Interactive book on April 7, 2019.

The print version is available now on Amazon.com and the animations are available on the Kinematic Synthesis of Mechanisms YouTube Playlist.