How to get dimensions for klann linkage from mechanicalspider.com

Community General Discussions
1

enable.pdf (23719Bytes)

hey guys...i have been trying to understand how the klann linkage link lengths were set from the diagram in mechanical spider.com.....and i have been unable to crack it....some help you guys ?????

2

Figure 2 in the pdf reminded me of some other bots here.

https://www.robotshop.com/letsmakerobots/node/24193

The mechanisms look similar and you should be able to do what you are attempting to do with it.

3

thank you sir.but that is

thank you sir.

but that is the theo-jansen linkage. am looking at the klann linkage. do both follow similar design procedures ???

4

Does this help?

Does this help?

5

ezekiel181 thanks for

ezekiel181 thanks for that…how to conclude the lenghts and angles of the triangles ???

6

Use a ratio for the lengths

Use a ratio for the lengths compared to a chosen link, the red one might be a good place to start.

Might take some trial and error to get the triangle dimensions right… they almost look the same sizes as the black/blue/yellow links though.

7

Weblink

Have made a weblink. Cool finding, Ezekiel181.

8

Thanks for all the help

Thanks for all the help guys…i have got a set of link lengths…now am trying an analytical approach

what method should i follow guys…vector loop method or algebric method

i found vector loop method easy to apply to the four bar linkage in the klann but i cannot extend it to the base triangle and other links

any advice guys ??