Jansen and Klann Legs

Comparison of Klann and Jansen leg linkages

Joseph Klann provided a useful comparison of the leg designs for the Mondo Spider and Theo Jansen’s Strandbeest at this (archived) link: http://www.mechanicalspider.com/comparison.html.

Here is an excellent web page about the Klann and Jansen leg mechanisms, as well as other leg designs: Dog Feather Designs.

This article compares the leg designs:  Mechanical Spider Using Klann Mechanism

This is a youtube video prepared by William Thielicke that illustrates the two leg mechanisms.

Mondo Spider

Mondo Spider walking machine

This walking machine is known as the Mondo Spider. More information is available at Mondospider.com.

The leg of the mondo spider has the topology known as a Stephenson six-bar and is described in US Patent 6,260,862 awarded to Joseph Klann. Access it through the link:
https://patents.google.com/patent/US6260862B1/en

Wikipedia calls this the Klann linkage which is described here:
http://en.wikipedia.org/wiki/Klann_Linkage

Jansen Strandbeest

Theo Jansen’s walking machine

Theo Jansen builds amazing walking machines.
Each leg is an eight-bar linkage. The Wolfram Demonstration Project models this linkage in a Mathematica notebook. See the link:

http://demonstrations.wolfram.com/ATheoJansenWalkingLinkage/

 

[vimeo]http://vimeo.com/1242383[/vimeo]

 

Periodic Table

NIST Periodic Table

Periodic Table

Periodic Table

The National Institute of Standards and Technology provides an on-line periodic table. Access it and other information at the link:  Periodic Table

National Institute of Standards and Technology

National Institute of Standards and Technology

Geometric Dimensioning and Tolerancing

This is a link to notes on Geometric Design and Tolerancing by Prof. Graeme Britton of Raffles Design Institute, Singapore.

Prof. Britton's Notes on GD&T

Prof. Britton\’s Notes on GD&T

A pdf version of Prof. Britton’s lecture is available at:
http://synthetica.eng.uci.edu/mechanicaldesign101/GDandT.pdf

Here is another excellent set of notes from the Technical College of New Jersey on geometric dimensioning and tolerancing.

2009 Formula SAE CA

2009 Formula SAE California

Here is a link to a facebook album showing the racecars and teams at the 2009 Formula SAE California intercollegiate engineering racecar competition that occurred June 17-21, 2009 at the Auto Club Raceway, Fontana CA.

http://www.facebook.com/album.php?aid=89098&id=92647534369

2009 Formula SAE CA

2009 Formula SAE CA

Materials Selection in Mechanical Design

Michael Ashby presents materials information in a practical format in his book Materials Selection in Mechanical Design.

Materials Selection in Mechanical Design

Materials Selection in Mechanical Design

This is a link to lecture notes that give an idea of his approach:
http://www.uofaweb.ualberta.ca/cme/pdfs/443ashbylectures2006.pdf

Ten-bar Drive

10-bar drive linkage

This 10-bar linkage is designed to drive a scissors movement in order to actuate a deployable structure. It was presented at the 2009 ReMar Conference in London. (UCI Robotics and Automation Lab)

Timing Belt Theory

Timing belt theory

ThomasNet provides a link to a useful white paper on Timing Belt Theory by Gates-Mectrol:

http://www.thomasnet.com/white-papers/abstract/101106/timing-belt-theory.html

Geometric data on timing belt drives can found in the catalog linked to Gates-Mectrol home page:

http://www.gatesmectrol.com/

gates-mectrol-logo1

Gearing

Gear geometry

Gear geometry data is available from PIC Design Inc. which is now part of RBC Bearings at the link:

http://pic-designcatalog.com/Images/pdfcat/section_12.pdf

RBC Bearings Logo

RBC Bearings Logo

Stock Drive Products provides an on-line Handbook of Gears at the website:

http://www.sdp-si.com/products/Gears/Index.php

Stock Drive Products Logo

Stock Drive Products Logo

The Gleason Gear has a lot of useful information:

http://www.gleason.com

images-2
 

The American Gear Manufacturers Association provides standards for sale on-line at the site:

https://www.agma.org/standards/.

AGMA Logo

AGMA Logo