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Sep 02
Tuesday
3D, 3D Modeling, Autocad
Quick 3D gear drawing using solid modelling.
11 Comments Sep-02-2008 | Posted by Murat Saraldı | Printable Version | Level |

Hello,

You can follow the steps below to draw a simple 3-dimensional gear, this is how it should look when we’re done.

Firstly, we sketch the outlines of our drawing. Fig.1


Fig.1

Then we add a line joining the two outer circles as in Fig.2


Fig.2

We then offset this line 3 and then 4 units to the right and the left respectively. Fig.3


Fig.3

We join the end points of the two lines as in Fig.4


Fig.4

We use the TRIM command to get rid of the excess lines and obtain Fig.5


Fig.5

Now use the ARRAY command to make 16 copies in total around the center of the circles Fig.6


Fig.6

Redraw the Ø60 circle and TRIM the lines as in Fig 7. This is the final shape we need before going into the third dimension. For us to be able to EXTRUDE this shape into a 3-D object, we need to make this a ‘boundary’, so type BO to activate the command, and select POLYLINE from the drop-down menu. This step is important for the third dimension.


Fig.7

Switch to ISOMETRIC view to get a better understanding in the process, and EXTRUDE the object 10 units. Use SUBTRACT command (also available from the solids editing toolbar) to remove the hole from the solid,


Fig.8

Have a wonderful day, and please write any questions you have in the comments below.

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11 Responses to “ Quick 3D gear drawing using solid modelling. ”
  1. Muhammad Qasim
    Dec 17, 2008
    Reply

    Hello

    I am confused about using solid hatching.  Please help me

  2. Enforoornanna
    Dec 19, 2008
    Reply

    friend has given the link has not regretted that has come

  3. sandeep
    Dec 26, 2008
    Reply

    i could not able to make substract comand

  4. ATienza
    Feb 16, 2009
    Reply

    ei..im also confused on solid hatching..plz help me step by step..tnx..\
    p.m me at my account..eacdtalingting@gmail.com

  5. MASQ
    Mar 3, 2009
    Reply

    not full part extrudat.only small circle because outer circle and gruve are not pedit.plzz help me

  6. iky
    iky
    Apr 9, 2009
    Reply

    Dear Friend,
    While this maybe a method for drawing a representation of a gear wheel, the reality is not that simple as a great deal of calculation needs to be done before a profile of a gear can be drawn (such as addendum and dedendum values, centre distances of meshed gears, pressure angles, tooth arc thickness, base circle geometry, type of profiling as in involution or cycloidal etc.) If you like I would be glad to send you a few professionally constructed engineered models.
    Best regards…………..iky (iky-one@operamail.com)

  7. Tim
    Apr 20, 2009
    Reply

    Can you guys please help me ? Because i m using this program call Unigraphics to draw out my model.

    However, I needed 2D drawings from autocad as a reference. If you could, please send it to death_knight321@hotmail.com . Please help me ! I m having lots of problems in school.

  8. iky
    Apr 26, 2009
    Reply

    Hi Tim,
    No problem, please tell me the type of gear or gears (if meshed) you require to model i.e. Bevel, Spur, Helical, Worm & Rack in mesh, Hypoid Bevel etc. I have done some pretty complex gear box designs with the maths included,
    Regards iky

  9. Tim
    May 4, 2009
    Reply

    Oh yay, i just need a normal wheel gear for reference. Well, the main purpose of my workpiece is to be used as a training piece for a CMM ( Coordinate measuring machine ). As I’m needed to create such workpiece, i could only draw out basic drawings of a normal gear.

    iky thank you very much. Hopefully i could use your designs to assist me in my school project.
    Regards tim.

  10. iky
    May 5, 2009
    Reply

    Hi Tim,
    I’m just going to forward you a 3D Sectional Model of a series of Spur Gears which I did as part of a gearbox design. I also have the mathematical calculations for construction as well as the geometry data. The file is in AutoCAD Dwg format meaning you will need the software to open otherwise you can open with the DWG   viewer (free fom Autodesk). If you need precisional data you can always reverse engineer the model and Flatshot, otherwise ask me for further info.
    Regards  ikythedraughtsman

  11. Asif
    Jun 5, 2009
    Reply

    hi,
     iky how r u. can u plzzzzzzz send me the detaile drawings data for spur, bevel, helical,double helical gears on my e.add sf_shafiq@yahoo.com
    i would be very very thank ful to u.
    basically i want to generate data for cnc machines for all gearing types and my mission is to get the designing data for the gears.


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