Gear autocad

Gear autocad DEFAULT

Tutorial - Making spur gear in AutoCAD?

  • Step 1:

    Start AutoCAD.

  • Step 2:

    Make 2 circles.

  • Step 3:

    Make the profile of the gear tooth spaces.

  • Step 4:

    Trim the circles side ways.

  • Step 5:

    Now enter "bo" command. It will show the boundary creation dialogue. Click Pick point. This command is going to be used for creating the polyline. We can also use PEDIT command. But let's try something new.

  • Step 6:

    Click inside the region and then press enter.

  • Step 7:

    Now we have the polyline created. Remember bo command doesn't join the lines but creates a polyline bounded by a region. Therefore the lines and arcs are also there.

  • Step 8:

    Make a circle of 50mm radius.

  • Step 9:

    Extrude it by 15mm.

  • Step 10:

    Now extrude the tooth polyline by 25mm.

  • Step 11:

    Array>>polar array>> and select the tooth profile extruded to array and the center point be origin and no. of items let be 12. Click OK

  • Step 12:

    Now subtract the tooth profile arrayed from the cylinderical disc and we have the gear body.

  • Sours:

    Input Parameters

    Gear type - internal or external gear

    Gear ratio and tooth numbers

    Pressure angle (the angle of tool profile) α

    Helix angle β

    Module m (for metric calculation)

    Diametral Pitch P (for English units)

    Note: Module and Diametral Pitch are reciprocal values.

    Unit addendum a*

    Unit clearance c*

    Unit dedendum fillet rf*

    Gear widths b1, b2

    Unit corrections x1, x2

    Note: For internal gears the opposite sign for unit correction is used in following formulas.

    Summary of unit correction Σx = x1 + x2

    Calculated parameters

    Gearing number


    for i > 1


    u = i


    for i < 1


    u = 1 / i

    Tangential module


    Normal pitch

    Axial pitch

    Base pitch


    ptB = pt cos αt

    Helix angle on the basic cylinder


    sin βb = sin β cos α

    Axial pressure angle


    Rolling/working pressure angle


    Axial rolling/working pressure angle


    Pitch diameter

    Base circle diameter


    db1,2 = d1,2 cos αt

    Theoretical center distance


    Real center distance


    Feed factor/addendum lowering


    Outside diameter


    da1,2 = d1,2 + 2m (a* + x1,2 - Δy)


    - for internal gearing the interference check is done as well


    for km > 0 is accomplished by addendum lowering da2 = da2 - 2km

    Root diameter


    df1,2 = d1,2 - 2m (a* + c* - x1,2)

    Work pitch diameter


    Virtual Number of Teeth


    Virtual Pitch Diameter

    Virtual Base Circle Diameter


    dbn1,2 = dn1,2 cos(α)

    Virtual Outside Diameter


    dan1,2 = dn1,2 + da1,2 – d1,2

    Tooth thickness (measured normally on the pitch diameter)


    s1,2 = p/2 + 2mx1,2 tg α

    Tooth width on the chord (measured normally)


    sc1,2 = s1,2 cos 2α

    Addendum height above the chord


    Unit addendum width (measured normally)



    Operating width of gearings


    bw = min( b1, b2)

    Relative width


    Factor of mesh duration


    ε = ε + ε


    Factor of profile mesh duration



    (the minus sign applies to internal gearing)


    Factor of step mesh duration


    Minimum correction without tapering



    a0* = a* + c* - rf*(1 - sin α)

    Minimum correction without undercut


    Minimum correction with the allowable undercut


    Checking chordal dimension


    W1,2 = ((zw - 0.5) π + z1,2 inv αt) m cos α) + 2 x1,2 m sin α




    is the tooth number across which the measure is performed

    Checking size across rollers/balls


    - for even tooth number


    M1,2 = Ds1,2 + dM


    - for odd tooth number


    M1,2 = Ds1,2 cos(90 / z1,2) + dM




    wire (ball) diameter


    diameter of the wire center circle


    wire (ball) contact angle

    1. Rpg gamers reddit
    2. Sara black canary
    3. Cat doing laundry gif

    Free Block Library CAD/BIM Library of blocks "gear.dwg"

    Free CAD and BIM blockslibrary - content for AutoCAD, AutoCAD LT, Revit, Inventor, Fusion 360 and other 2D and 3D CAD applications by Autodesk. CAD blocks and files can be downloaded in the formats DWG, RFA, IPT, F3D. You can exchange useful blocks and symbols with other CAD and BIM users. See popular blocksand top brands.


    Selected blocks (choose category on the left):+block

    Total found 6 records




    cat: Gears


    Downloaded: 11018x

    Size 63,3kB • from 27.6.2014

    Uploader: realbabak • Author: babak zawari


    Gear 2



    cat: Gears


    Downloaded: 6176x

    Size 192kB • from 22.1.2012

    Uploader: amitjagtap81 • Author: Amit Jagtap

    CAD blocks: libraries dwg blocks bloques blocos blocchi blocco blocs blöcke family families symbols details parts models modellen geometry elements entourage cell cells drawing bibliotheque theme category collections content kostenlos insert scale landscaping

    We appreciate all your comments and input to the functionality of CAD Catalog, to the category tree, etc. Please report possible bugs to [email protected]

    Nous apprécions tous vos commentaires et suggestions sur la fonctionnalité du catalogue CAO, sur l'arborescence des catégories, etc ainsi que sur les bogues éventuellement rencontrés. Merci de transmettre vos remarques a [email protected]

    Want to download the whole library? Télécharger l'ensemble du catalogue?
    Block Catalog plugin You can download all CAD blocks directly from your AutoCAD, without logins and any limitations. See the add-on application Block Catalog for AutoCAD 2013 and higher and the add-on application BIM-Families (now in Revit Tools) for Revit 2015 and higher.

    CAD blocks can be downloaded and used for your own personal or company design use only. Any distribution of the Catalog content (to other catalogs, web download, CD/DVD media, etc.) is prohibited - see Terms of use. The DWG-version problem (not valid file, invalid file, drawing not valid, cannot open) can be solved by the Tip 2869.

    See also block-statistics and the latest 100 blocks.

    Autocad 2D Gear Practice


    Autocad gear


    Autocad 2d gear making -- Making 2d gear drawing in Autocad


    You will also like:


    1480 1481 1482 1483 1484