2 answers

• 
  Sudhir Gill over 1 year ago

  Here is the tutorial

  1. Step 1

     Start AutoCAD.

     

  2. Step 2

     Make a circle of 35mm radius at center.

     

  3. Step 3

     Make another circle of 50mm concentric to previous one.

     

  4. Step 4

     Make two arcs like this one for cutting teeth.

     

  5. Step 5

     Trim down the circles. Now enter PEDIT command.

     

  6. Step 6

     Right click on the screen and select multiple.

     

  7. Step 7

     Select all arcs.

     

  8. Step 8

     Press enter and keep the input Y and press enter.

     

  9. Step 9

     Now click on the join.

     

  10. Step 10

      Press Enter.

      

  11. Step 11

      Now we can see that it has become a polyline.

      

  12. Step 12

      Enter helix command.

      

  13. Step 13

      Enter the radius value of (0,35). Any other value will distort the sweep. Keep the default value for the upper radius. Press Enter.

      

  14. Step 14

      Now select turns and enter a value of 0.15.

      

  15. Step 15

      Now enter a height of 50mm. We have helix path generated which will later be used for cutting the teeth.

      

  16. Step 16

      Create a circle of 50mm with origin as center.

      

  17. Step 17

      Extrude it by 25mm.

      

  18. Step 18

      Enter SWEEP command.

      

  19. Step 19

      Select the polyline to sweep and press enter.

      

  20. Step 20

      Right click and select alignment.

      

  21. Step 21

      Select No.

      

  22. Step 22

      Again right click and select twist.

      

  23. Step 23

      Keep the default values and press enter. Now select the helix as the sweep path.

      

  24. Step 24

      We have one cut body generated.

      

  25. Step 25

      Now enter array command.

      

  26. Step 26

      Select array type polar and enter origin as center for array. Click select object and select the sweep. Now enter the no. of items be 10. Click OK.

      

  27. Step 27

      Subtract the arrayed sweeps from the cylindrical body and we have the helical gear created.

      

  1. 
     A3NCAD about 1 year ago

     Good work!

  2. 
     Doking 7 months ago

     it is not clear how to define the propeller

• 
  rockroad 5 months ago

  good I finished the job by 2008 thanks