A graphical linkage synthesis question

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    Linkage Synthesis
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Discussion Overview

The discussion revolves around the differences between two examples of graphical linkage synthesis as presented in Robert L. Norton's machinery books. Participants are exploring the specific characteristics and mechanisms of a rocker output and a coupler output, both featuring complex displacement.

Discussion Character

  • Technical explanation, Conceptual clarification, Debate/contested

Main Points Raised

  • One participant seeks clarification on the differences between rocker output (example 3-2) and coupler output (example 3-3) in terms of their graphical linkage synthesis.
  • Another participant notes the absence of linkage design in chapter 2 of their edition and requests full references or diagrams for better understanding.
  • A participant mentions having a different edition of Norton's book and suggests looking at chapter 3, specifically examples 3-2 and 3-3, for relevant information.
  • A link to an external resource is provided for step-by-step construction of the mechanisms, indicating where to find the examples discussed.
  • A question is raised regarding the terminology used for the outputs and the differences in the steps involved in constructing the two mechanisms, particularly the use of a rotopole in example 3-2 but not in example 3-3.

Areas of Agreement / Disagreement

Participants express varying levels of familiarity with the examples and their respective editions of Norton's books, leading to some uncertainty about the content. There is no consensus on the reasons behind the differences in terminology and mechanism construction.

Contextual Notes

Some participants reference different editions of Norton's books, which may lead to discrepancies in chapter numbers and example content. The discussion reflects a need for clarity on the definitions and applications of the mechanisms involved.

mech-eng
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Hi, all. Can anyone who use or used explain the difference between examples in Norton's machinery books in chapter on graphical linkage synthesis, one is a rocker output-two positions
with complex displacement and the other is coupler output-two positions with complex displacement.
 
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I have a copy of; Machine Design, An Integrated Approach, 3rd Edition. Robert L. Norton. ISBN 0131481908
But there is no linkage design in chapter 2.

Can you give a full reference, or better still, scan the diagrams and post them here?
 
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Baluncore said:
I have a copy of; Machine Design, An Integrated Approach, 3rd Edition. Robert L. Norton. ISBN 0131481908
But there is no linkage design in chapter 2.

Can you give a full reference, or better still, scan the diagrams and post them here?

I have copy of kinematics and dynamics of machinery, second edition in SI but your copy
probably covers the same examples. You should look at the chapter called "Graphical linkage synthesis". It is chapter 3 in my book. Examples are example 3-2 (Rocker output two positions with complex
displacement) and example 3-3 (coupler output two-positions with complex displacement).

And thank you for your interest.
 
To learn the step-by-step construction and to understand the difference between these two mechanisms, See example 2 for the first one, and Example 3 for the second one at:

http://facultad.bayamon.inter.edu/elay/mecn4110/ch3graphical%20linkage%20synthesis.pdf

Cheers, Bobbywhy
 
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why is example 3-2 called rocker output and the example 3-3 called coupler output and why rotopole is used in example 3-2 and not used in example 3-3? First two steps are the same and third step is a bit different and fourth step is almost the same.
 
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