Compound Lever: Difference between revisions

Revision as of 11:54, 27 August 2016

Description

Levers of any of the 3 Classes may be combined such that the load of one lever is the effort applied to another.

This can be done to increase Mechanical Advantage (especially where operating space is restricted) or to increase movement as with a piano key mechanism for example.

Features and Uses

Common examples of Compound Lever applications include: nail clippers, bolt cutters, bench shears, 'aviation' type tinsnips, bass drum pedal and mechanical typewriter mechanisms.

Animations

Examples from Nguyen Duc Thang's YouTube Channel 2100 Animated Mechanical Mechanisms

Bench Shears - a 4-Bar Linkage is used. Hand force is applied to one crank. The upper tool blade is fixed to the other crank.

DT Online Buyers' Guide

Simple Frames and Linkages can be explored using Construction Kits such as those listed below.

More varied models can be constructed using the materials listed at Truss Bridge Models or Stripwood Technology Materials and tools described in Stripwood Technology Tools.

Click top left to enlarge


Viga Wooden Construction Set	Straws and Connectors	Construction Engineering Blocks	K'Nex Education Group Set	Engino STEM Construction Set	Lego Duplo Tech Machines Set	Lego Education Core Set	Meccano Easy Construction Box	Fischertechnik Universal Building Kit

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 [[File:Fingernail Clippers.jpg|250px|left]]
 Common examples of '''Compound Lever''' applications include: nail clippers, bolt cutters, [[Bench Shears and Guillotines|bench shears]], 'aviation' type [[tinsnips]], bass drum pedal and mechanical typewriter mechanisms.
+<div style="clear: both;"></div>
+=====Animations=====
+* Examples from '''[[2100 Animated Mechanical Mechanisms|Nguyen Duc Thang's]]''' YouTube Channel '''[[2100 Animated Mechanical Mechanisms]]'''
-<div style="clear: both;"></div>
+{|
+|-
+| [https://youtu.be/zLLgQCJ4vSQ '''Bench Shears'''] - a '''[[Four Bar Chain|4-Bar Linkage]]''' is used. Hand force is applied to one crank. The upper tool blade is fixed to the other crank.
+| {{#ev:youtube|zLLgQCJ4vSQ|200x200|right||frame|loop=1&autoplay=1&playlist=zLLgQCJ4vSQ}}
+|}
 {{Construction Kits Buyers Guide}}