The gear is a circular part with teeth that interlock with other toothed parts to allow effective transfer of torque and motion from one area to another. Gears are essential components used in a wide array of different machines including automobiles, bicycles, clocks, and even can openers. If you're interested in designing gears, this wikiHow will show how to create a simple gear assembly using Siemens NX 12 CAD software.

Part 1
Part 1 of 3:

The Creation Process

  1. 1
    Create the gears first. This is the easiest part of the creation process to start with. This can be done by accessing the gear tool kit creation menu by clicking menu in the top left corner of your screen, GC Toolkits, Gear Modeling, and finally Cylinder Gear. The gear modeling page will appear. Make sure "Create Gear" is selected, and then press OK twice.
  2. 2
    Know how to use the gear menu. Once the gear menu has been opened, you will see several parameters associated with the dimensions of your gear. Any values can be used. However, values that are coherent with each other will make gears that are easier to design for. Example values can be seen in the image above.
  3. 3
    Choose a vector for placement. After your parameters have been determined, click OK and a vector menu will appear. This menu serves to determine the orientation of your gear when placed in your project. The X,Y, or Z axis will all work equally. Click on one of the axis arrows to select it, then click OK.
  4. 4
    Create the initial shaft hole extrusion. Now that you have created a gear, an extruded hole in the center of the gear needs to be added for attachment to a gear shaft.
  5. 5
    Make the shaft hole. After the initial extrusion is made, a subtraction extrusion needs to be made to create a hole in the middle of the gear.
  6. 6
    Create the pin holes. Two more small holes need to be made on either side of your new extrusion to create a space for a gear pin to be placed.
  7. 7
    Make the gear shafts. The gear shafts serve to hold and turn the gears when rotational force is applied.
  8. 8
    Create the shaft pins. Once the gears and the shafts are made, the gear pins are next. The pins will prevent the gears from sliding off the shafts. Create the pins the same way as the initial shaft.
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Part 2
Part 2 of 3:

The Assembly Process

  1. 1
  2. 2
    Add in the parts. Now that the assembly project is created, the created parts need to be added to the workspace.
  3. 3
    Move the added parts. Now that you have all of your parts added to the work surface, it is time to move them around to create a gear assembly.
  4. 4
    Constructing the gear assembly. Now, using the Move Component feature discussed in the last step, the gear assembly can be constructed.
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Part 3
Part 3 of 3:

The Housing Unit and Finishing Up

  1. 1
    Create the housing unit. Now that the gear assembly is made, a housing unit needs to be made to hold the assembly.
  2. 2
  3. 3
    Know that you are now finished. This model can be 3d printed or manufactured for use in the real world.
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About This Article

wikiHow is a “wiki,” similar to Wikipedia, which means that many of our articles are co-written by multiple authors. To create this article, volunteer authors worked to edit and improve it over time. This article has been viewed 10,220 times.
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Co-authors: 5
Updated: February 22, 2021
Views: 10,220
Categories: CAD Software
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