Twist Analisys of “Not Standard Sections”
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Basic Gear Design
Here you can find a simple tool to draw basic 3D spur gears feature. This tool is under development and collaboration is greatly appreciated. Several estention and improvements are possible. This can even be a basic brick for other graphical projects.
GearDesign returns the basic triangulated model of a 3D spur Gear. It requires in input a few standard parameter to insert in a structure. Here you can find the explanation of all parameters, for those who are not confident with mechanics but are curious to use this utility I suggest:
http://en.wikipedia.org/wiki/Gear
The INPUT parameters are:
- The Gear structure
Gear.m=1;%modulus
Gear.z=20;%number of teeth
Gear.Alpha=20;%Pressure angle degree
Gear.Addendum=1;%addendum/modulus ratio
Gear.Dedendum=1.25;%dedendum/modulus ratio
Gear.FaceWidth=10;%Face width
Gear.ShaftDiameter=4;%shaft diameter [mm]
Gear.numpoint=10;%number of points to approximate the tooth profile
Gear.t=[];%here will be stored the triangulation
Gear.p=[];%here will be stored points data - plotflag: turn on a plot of the designed gear
The OUTPUT parameter is the Gear structure but with filled:
- Gear.t (triangles)
- Gear.p (points).
Here is a an example:
Gear2.m=1;%modulus
Gear2.z=30;%number of teeth
Gear2.Alpha=20;%Pressure angle degree
Gear2.Addendum=1;%addendum/modulus ratio
Gear2.Dedendum=1.25;%dedendum/modulus ratio
Gear2.FaceWidth=4;%face width
Gear2.ShaftDiameter=8;%shaft diameter
Gear2.numpoint=10;%points to approximate the tooth profile
Gear2.t=[];%for the output
Gear2.p=[];%for the output
<p style="text-align: left;">% GEAR DESIGN
Gear2=GearDesign(Gear2,true);
A routine to experiment gears motion is provided.
For problems, questions, suggestions,:
Created: 18/01/2009
Last Update: 18/01/2009
Author: Giaccari Luigi
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